| sex-based trade-offs in the innate and acquired immune systems of sternotherus minor. | longevity patterns in most vertebrates suggest that females benefit most from maintenance investment. a reversed longevity pattern in loggerhead musk turtles (sternotherus minor) allowed us to test trade-offs between maintenance and survivorship. we tested the hypothesis that the sex with greater longevity has greater maintenance than the sex with shorter longevity. we also compared the following parameters between sexes: bactericidal ability (ba) and heterophil:lymphocyte ratios (hlr). baseline ... | 2020 | 33075211 |
| newly emerging diseases of marine turtles, especially sea turtle egg fusariosis (seft), caused by species in the fusarium solani complex (fssc). | sea turtles are presently considered severely endangered species that are historically threatened by many environmental factors. recently, additional threats to sea turtles from two pathogenic species of fungi in the fusarium solani species complex (f. falciforme and f. keratoplasticum) have been identified. these species infect marine turtle eggs, causing sea turtle egg fusariosis, and kill their embryos, with recent reports of hatch-failure in seven globally distributed species of endangered s ... | 2020 | 33062381 |
| atypical ocular chelonoid herpesvirus manifestations in a captive loggerhead turtle (caretta caretta). | a captive loggerhead turtle (caretta caretta) of unknown sex, 3 years of age, presented with bilateral mucoid secretions, severe chemosis, conjunctival hyperemia, and globe retraction. the animal was evaluated ophthalmologically and systemically, and hematological, microbiological, and conjunctival cytological and biopsy samples were collected for complementary diagnosis. the histopathological examination showed amphophilic intranuclear inclusions associated with severe inflammatory infiltrate. ... | 2020 | 33058466 |
| red blood cell osmotic fragility in healthy loggerhead and green sea turtles. | loggerhead (caretta caretta; cc) and green sea (chelonia mydas; cm) turtles admitted to rehabilitation facilities may require blood transfusions for supportive treatment of disorders resulting in life-threatening anemia, but, considering the unique erythrocyte chemistry of sea turtles, standardized donor red blood cell (rbc) storage protocols have not been established. prolonged cold storage and the effects of various anticoagulant-preservative solutions have been associated with increased rbc o ... | 2020 | 32996405 |
| molecular composition and biodegradation of loggerhead sponge spheciospongia vesparium exhalent dissolved organic matter. | sponges are critical components of marine reefs due to their high filtering capacity, wide abundance, and alteration of biogeochemical cycling. here, we characterized dissolved organic matter (dom) composition in the sponge holobiont exhalent seawater of a loggerhead sponge (spheciospongia vesparium) and in ambient seawater in florida bay (usa), as well as the microbial responses to each dom pool through dark incubations. the sponge holobiont removed 6% of the seawater dissolved organic carbon ( ... | 2020 | 32950795 |
| ocular ultrasonography of sea turtles. | environmental changes contribute to the development of ophthalmic diseases in sea turtles, but information on their eye biometrics is scarce. the aim of this study was to describe ophthalmic ultrasonographic features of four different sea turtle species; caretta caretta (loggerhead turtle; n = 10), chelonia mydas (green turtle; n = 8), eretmochelys imbricata (hawksbill turtle; n = 8) and lepidochelys olivacea (olive ridley; n = 6) under human care. corneal thickness, scleral ossicle width and th ... | 2020 | 32912266 |
| environmental and anthropogenic factors affecting nesting site selection by sea turtles. | understanding the environmental and anthropogenic factors that affect nesting site selection by sea turtles is key to maintaining priority conservation areas. the species lepidochelys olivacea, caretta caretta, and eretmochelys imbricata nest annually on the island of comandatuba (una, northeastern brazil), where this survey was conducted. we evaluated the temporal and spatial distribution of nests during the seasons 2008/2009 to 2014/2015 and 2017/2018. in the last season, we further examined t ... | 2020 | 32836012 |
| first report of heavy metal presence in muscular tissue of loggerhead turtles caretta caretta (linnaeus, 1758) from the balearic sea (balearic islands, spain). | the concentrations of cadmium (cd), mercury (hg) and lead (pb) were determined in muscular tissue of eleven loggerhead turtles (caretta caretta) from the balearic islands (spain, western mediterranean). the metal levels found in the present study were similar or lower than concentrations detected in andalusia (mainland spain), italy, canary islands (spain) or japan. as the main source of metals in the loggerhead turtle is the diet, low metal burdens could be explained by its opportunistic feedin ... | 2020 | 32808129 |
| quantifying impacts of plastic debris on marine wildlife identifies ecological breakpoints. | quantifying sublethal effects of plastics ingestion on marine wildlife is difficult, but key to understanding the ontogeny and population dynamics of affected species. we developed a method that overcomes the difficulties by modelling individual ontogeny under reduced energy intake and expenditure caused by debris ingestion. the predicted ontogeny is combined with a population dynamics model to identify ecological breakpoints: cessation of reproduction or negative population growth. exemplifying ... | 2020 | 32790233 |
| diagnosis and treatment of pulmonary disease in sea turtles (caretta caretta). | the aim of this study was to describe the clinical signs, radiographic, endoscopic and ct findings, cytological and microbiological findings and treatments of pulmonary diseases in sea turtles, in order to obtain an accurate diagnosis that avoids unnecessary therapy and antibiotic-resistance phenomena. in total, 14 loggerheads (caretta caretta), with clinical and/or radiographic findings of pulmonary pathology, were assessed through various combinations of clinical, radiological, ct, endoscopic ... | 2020 | 32764322 |
| a new direction for differentiating animal activity based on measuring angular velocity about the yaw axis. | the use of animal-attached data loggers to quantify animal movement has increased in popularity and application in recent years. high-resolution tri-axial acceleration and magnetometry measurements have been fundamental in elucidating fine-scale animal movements, providing information on posture, traveling speed, energy expenditure, and associated behavioral patterns. heading is a key variable obtained from the tandem use of magnetometers and accelerometers, although few field investigations hav ... | 2020 | 32760571 |
| movement patterns of large juvenile loggerhead turtles in the mediterranean sea: ontogenetic space use in a small ocean basin. | mechanisms that determine how, where, and when ontogenetic habitat shifts occur are mostly unknown in wild populations. differences in size and environmental characteristics of ontogenetic habitats can lead to differences in movement patterns, behavior, habitat use, and spatial distributions across individuals of the same species. knowledge of juvenile loggerhead turtles' dispersal, movements, and habitat use is largely unknown, especially in the mediterranean sea. satellite relay data loggers w ... | 2020 | 32760506 |
| biodiversity of carapace epibiont diatoms in loggerhead sea turtles (caretta caretta linnaeus 1758) in the aegean sea turkish coast. | the aegean sea coast of turkey hosts one of the most important nesting grounds for loggerhead sea turtles (caretta caretta) in the mediterranean sea. previous studies have revealed that the sea turtle carapace provides favourable conditions for various epibiontic organisms. epibionts occurring on the carapace have been examined from different locations in the oceans. | 2020 | 32742770 |
| riders on the storm: loggerhead sea turtles detect and respond to a major hurricane in the northwest atlantic ocean. | extreme weather events, including hurricanes, have considerable biological, ecological, and anthropogenic impacts. hurricane irene caused substantial economic damage when it hit the mid-atlantic bight (mab) off of the eastern united states in august of 2011. the mab is highly stratified during the summer when a strong thermocline separates warm, surface water from deep, cold water, and this oceanographic phenomenon makes modeling hurricane strength difficult. loggerhead sea turtles (caretta care ... | 2020 | 32742661 |
| genomic evidence of recent hybridization between sea turtles at abrolhos archipelago and its association to low reproductive output. | hybridization between sea turtle species occurs with particularly high frequency at two adjacent nesting areas in northeastern brazil. to understand the outcomes of hybridization and their consequences for sea turtle conservation, we need to evaluate the extent of hybridization occurrence and possible deleterious effects in the hybrid progeny. thus, we investigated the hypothesis of the existence of a new hybrid spot offshore of brazil's northeastern coast. the abrolhos archipelago is surrounded ... | 2020 | 32733067 |
| geographical variation in the diatom communities associated with loggerhead sea turtles (caretta caretta). | epizoic diatoms form an important part of micro-epibiota of marine vertebrates such as whales and sea turtles. the present study explores and compares the diversity and biogeography of diatom communities growing on the skin and shell of loggerhead sea turtles (caretta caretta) from four different localities: adriatic sea (croatia), ionian sea (greece), south africa and florida bay (usa) using both light and scanning electron microscopy. we observed almost 400 diatom taxa belonging to more than 1 ... | 2020 | 32726804 |
| new genetic insights about hybridization and population structure of hawksbill and loggerhead turtles from brazil. | an extremely high incidence of hybridization among sea turtles is found along the brazilian coast. this atypical phenomenon and its impact on sea turtle conservation can be elucidated through research focused on the evolutionary history of sea turtles. we assessed high-quality multilocus haplotypes of 143 samples of the 5 species of sea turtles that occur along the brazilian coast to investigate the hybridization process and the population structure of hawksbill (eretmochelys imbricata) and logg ... | 2020 | 32710544 |
| genetic analysis of chelonid herpesvirus 5 in marine turtles from baja california peninsula. | the chelonid herpesvirus 5 (chhv5) is the primary etiological agent associated with fibropapillomatosis (fp), a neoplastic disease in marine turtles. in this study, we report for the first time chhv5 in marine turtles and a leech from baja california peninsula. eighty-seven black, olive or loggerhead turtle species, one fp tumor and five leeches were analyzed. the tumor sample from an olive, a skin sample from a black and a leech resulted positive of chhv5 for conventional pcr. two viral variant ... | 2020 | 32661638 |
| managing fisheries in a world with more sea turtles. | for decades, fisheries have been managed to limit the accidental capture of vulnerable species and many of these populations are now rebounding. while encouraging from a conservation perspective, as populations of protected species increase so will bycatch, triggering management actions that limit fishing. here, we show that despite extensive regulations to limit sea turtle bycatch in a coastal gillnet fishery on the eastern united states, the catch per trip of kemp's ridley has increased by mor ... | 2020 | 32605516 |
| structural analysis of leucine, lysine and tryptophan mitochondrial trna of nesting turtles caretta caretta (testudines: chelonioidea) in the colombian caribbean. | the understanding of the functional properties of mitochondrial transfer rna (mt trnas) depend on the knowledge of its structure. trna acts as an interface between polynucleotides and polypeptides thus, they are key molecules in protein biosynthesis. the trna molecule has a functional design and, given its importance in the translation of mitochondrial genes, it is plausible that modifications of the structure can affect the synthesis of proteins and the functional properties of the mitochondria ... | 2020 | 32596037 |
| testing the stability of plasma protein and whole blood rna in archived blood of loggerhead sea turtles, caretta caretta. | sample storage conditions can affect accuracy and reproducibility of biological measurements. storing samples rapidly at the lowest available temperatures is considered ideal but is not always feasible when sampling in remote and logistically challenging field conditions, as is often the case with sea turtles. the objective of this study was to examine the stability of plasma proteins and quality of whole blood rna from loggerhead sea turtle samples collected as part of an eighteen-year-long cur ... | 2020 | 32589445 |
| heat, health and hatchlings: associations of in situ nest temperatures with morphological and physiological characteristics of loggerhead sea turtle hatchlings from florida. | incubation temperatures, in addition to an embryo's genetic makeup, are critical in many aspects of adequate sea turtle embryonic development. the effects of high and low incubation temperatures on hatchling quality have been previously examined; however, many of these studies were conducted on relocated or laboratory-reared nests, which do not accurately reflect natural nest temperature fluctuations. to observe the impacts of varying in situ incubation temperatures on loggerhead sea turtle (car ... | 2020 | 32523697 |
| computed tomographic analysis of internal structures within the nasal cavities of green, loggerhead and leatherback sea turtles. | the morphology of the tetrapod nasal cavity has adapted to the environment in terms of olfaction and respiration. reports indicate that the internal structure of the nasal cavity of green sea turtles is more complex than that of turtles in general, but whether or not it is similar among sea turtle species remains unknown. the present study aimed to define the internal structures of the nasal cavity of green (chelonian mydas), loggerhead (caretta caretta) and leatherback (dermochelys coriacea) se ... | 2020 | 32478454 |
| combined use of mitochondrial and nuclear genetic markers further reveal immature marine turtle hybrids along the south western atlantic. | marine turtle hybridization is usually sporadic and involves reports of only a few individuals; however, brazilian populations have high hybridization rates. here we investigated the presence of hybrids in morphologically identified immature hawksbills (eretmochelys imbricata) along the south western atlantic (swa). we sequenced one mitochondrial (d-loop) and three nuclear dna (rag1, rag2, and cmos) markers to better understand the patterns and characteristics of hybrids. we identified 22 hybrid ... | 2020 | 32353097 |
| macro-litter ingestion in deep-water habitats: is an underestimation occurring? | marine litter affects marine organisms, posing threats to biodiversity conservation and to ecosystem structure and functioning. providing a suitable assessment of marine litter effects on marine life through bioindicator species is crucial to drive an effective waste management policy. however, to date no standardized tool has been developed to describe and monitor the impact of marine macro-litter on marine life within deep-water habitats. modifying the protocol proposed to monitor macro-litter ... | 2020 | 32334175 |
| evidence of ingested plastics in stranded loggerhead sea turtles along the greek coastline, east mediterranean sea. | plastic debris has become a major threat to the marine environment and wildlife. sea turtles are particularly vulnerable, and are known to ingest plastic debris globally; however, information from greek waters is still absent. in this study, 36 stranded dead loggerhead turtles (caretta caretta) were collected from the greek coastline area, and their gastrointestinal content was analysed for ingested plastic debris. twenty-six individuals (72%) were found to have ingested plastic, with an average ... | 2020 | 32325357 |
| identifying patterns in foraging-area origins in breeding aggregations of migratory species: loggerhead turtles in the northwest atlantic. | population assessments conducted at reproductive sites of migratory species necessitate understanding the foraging-area origins of breeding individuals. without this information, efforts to contextualize changes in breeding populations and develop effective management strategies are compromised. we used stable isotope analysis of tissue samples collected from loggerhead sea turtles (caretta caretta) nesting at seven sites in the northern recovery unit (nru) of the eastern united states (north ca ... | 2020 | 32282844 |
| sunscreen active ingredients in loggerhead turtles (caretta caretta) and their relation to molecular markers of inflammation, oxidative stress and hormonal activity in wild populations. | the present study sought to determine bioaccumulation and potential molecular effects of four of the most environmentally significant sunscreen agents in juvenile loggerhead sea turtles (caretta caretta) from the italian coasts of the central adriatic sea. each of these sunscreen agents were found in most of the plasma samples analyzed, with benzophenone-3 as the dominant species. total concentrations of the sunscreen agents ranged from not detected (<lod) to 28.43 μg ml-1. almost all of the gen ... | 2020 | 32275558 |
| incubation environment and parental identity affect sea turtle development and hatchling phenotype. | for reptiles, the incubation environment experienced by embryos during development plays a major role in many biological processes. the unprecedented rate of climate change makes it critical to understand the effects that the incubation environment has on developing embryos, particularly in imperiled species such as chelonians. consequently, a number of studies have focused on the effects of different environmental conditions on several developmental processes and hatchling phenotypic traits. in ... | 2020 | 32270269 |
| antibiotic resistance of gram-negative bacteria from wild captured loggerhead sea turtles. | sea turtles have been proposed as health indicators of marine habitats and carriers of antibiotic-resistant bacterial strains, for their longevity and migratory lifestyle. up to now, a few studies evaluated the antibacterial resistant flora of mediterranean loggerhead sea turtles (caretta caretta) and most of them were carried out on stranded or recovered animals. in this study, the isolation and the antibiotic resistance profile of 90 gram negative bacteria from cloacal swabs of 33 mediterranea ... | 2020 | 32268481 |
| identifying sex of neonate turtles with temperature-dependent sex determination via small blood samples. | temperature-dependent sex determination, present in most turtle species, is a mechanism that uses temperature to direct the sex of the embryo. the rapid increase of global temperatures highlights the need for a clear assessment of how sex ratios of organisms with tsd are affected. in turtles with tsd, quantifying primary sex ratios is challenging because they lack external dimorphism and heteromorphic sex chromosomes. here we describe a new technique used to identify sex in neonate turtles of tw ... | 2020 | 32193464 |
| mercury and organochlorine pesticides in tissues of loggerhead sea turtles (caretta caretta) stranded along the southwestern mediterranean coastline (andalusia, spain). | nineteen loggerhead sea turtles (caretta caretta) stranded along the southwestern mediterranean coastline (andalusia) were used in this study. a total of 68 samples of fat (n = 18), liver (n = 15), kidney (n = 13), pectoral muscle (n = 19), and brain (n = 3) were analysed for total mercury (hg) and organochlorine pesticides [oc: ∑dichlorodiphenyltrichloroethanes (∑ddt), ∑hexachlorocyclohexane (∑hch), ∑heptachlor, ∑drins and ∑endosulfan]. these loggerhead sea turtles showed tissue hg and oc conce ... | 2020 | 32185428 |
| is caretta caretta a carrier of antibiotic resistance in the mediterranean sea? | sea turtles can be considered a sentinel species for monitoring the health of marine ecosystems, acting, at the same time, as a carrier of microorganisms. indeed, sea turtles can acquire the microbiota from their reproductive sites and feeding, contributing to the diffusion of antibiotic-resistant strains to uncontaminated environments. this study aims to unveil the presence of antibiotic-resistant bacteria in (i) loggerhead sea turtles stranded along the coast of sicily (mediterranean sea), (ii ... | 2020 | 32164241 |
| first multicenter coprological survey on helminth parasite communities of free-living loggerhead sea turtles caretta caretta (linnaeus, 1758) from the adriatic sea and northern ionian sea. | the prevalence of endoparasite infections in 83 free-living specimens of caretta caretta, classified as vulnerable species, from the adriatic sea and northern ionian sea was investigated by coprological examination. thirty-seven (44.6%) turtles were found to be infected with helminths. the helminth infections found were: rhytidodes gelatinosus and sulcascaris sulcata (18.1% each), hapalotrema mistroides (13.2%), cymatocarpus solearis (9.6%), eniodotrema megachondrus (7.2%), kathlania/tonaudia sp ... | 2020 | 32154102 |
| pre-/analytical factors affecting whole blood and plasma glucose concentrations in loggerhead sea turtles (caretta caretta). | blood glucose is vital for many physiological pathways and can be quantified by clinical chemistry analyzers and in-house point-of-care (poc) devices. pre-analytical and analytical factors can influence blood glucose measurements. this project aimed to investigate pre-analytical factors on whole blood and plasma glucose measurements in loggerhead sea turtles (caretta caretta) by evaluating the effects of storage (refrigeration) up to 48h after sampling and of packed cell volume (pcv) on whole bl ... | 2020 | 32126109 |
| updates on ecology and life cycle of sulcascaris sulcata (nematoda: anisakidae) in mediterranean grounds: molecular identification of larvae infecting edible scallops. | sulcascaris sulcata is a nematode parasite of sea turtles, widespread in neritic foraging grounds with variable prevalence, reaching 30% in loggerhead turtles caretta caretta feeding in northern adriatic sea. ulcerative gastritis associated to high intensity of infection is reported in this host species. the life cycle of s. sulcata has been elucidated in australian and american waters, demonstrating the ability of the species of infecting a wide range of intermediate hosts, represented by bival ... | 2020 | 32118077 |
| long-term photo-id and satellite tracking reveal sex-biased survival linked to movements in an endangered species. | sex-biased survival linked to anthropogenic threats places populations at risk. we show the utility of long-term multidecadal photo-identification (photo-id) combined with long-term high-resolution (fastloc-gps) satellite telemetry to investigate the links between mortality rates and patterns of movement for a wide-ranging, endangered marine vertebrate. using a photo-identification database of 947 loggerhead turtles (caretta caretta) compiled over 18 yr, we estimated greater annual survival rate ... | 2020 | 32096220 |
| quantifying the impacts of future sea level rise on nesting sea turtles in the southeastern united states. | sandy beaches, a necessary habitat for nesting sea turtles, are increasingly under threat as they become squeezed between human infrastructure and shorelines that are changing as a result of rising sea levels. forecasting where shifting sandy beaches will be obstructed and how that directly impacts coastal nesting species is necessary for successful conservation and management. predicting changes to coastal nesting areas is difficult because of a lack of consensus on the physical attributes used ... | 2020 | 32086969 |
| non-essential toxic element (cd, as, hg and pb) levels in muscle, liver and kidney of loggerhead sea turtles (caretta caretta) stranded along the southwestern coasts of tyrrhenian sea. | non-essential toxic metals are environmental pollutants that contaminate the marine ecosystem due to their extensive use and long-range transport (by rivers and air). their presence into the environment is often linked to the human activity, with an expected bioaccumulation in the food chain. within the marine animals, sea turtles may be considered as potential sentinel species for environmental assessment because of their long lifetime, habitat use and migratory nature. in this study, non-essen ... | 2020 | 32081760 |
| caretta caretta nesting activity on akumal beaches, mexico. | mexico has made substantial contributions to marine turtle protection and conservation, especially since 1990. several conservation projects entail monitoring efforts to recover nesting territories for marine turtles. the sea turtle protection program of akumal, in the mexican state of quintana roo, was created in 1993 and was developed by the akumal ecological center. this paper provides the nesting ecology parameters for caretta caretta over a protection period of 24 years (1995-2018). a well- ... | 2020 | 32080298 |
| the mediterranean mussel (mytilus galloprovincialis) as intermediate host for the anisakid sulcascaris sulcata (nematoda), a pathogen parasite of the mediterranean loggerhead turtle (caretta caretta). | sulcascaris sulcata (anisakidae), a pathogenic nematode of sea turtles, may cause ulcerous gastritis with different degrees of severity. previous studies demonstrated a high prevalence of infection in the mediterranean loggerhead turtle (caretta caretta), although no data on the potential intermediate hosts of this nematode has been published thus far from the mediterranean basin. here, using molecular analyses, we demonstrated that the cross sections of nematode larvae observed histologically i ... | 2020 | 32069882 |
| helping decision making for reliable and cost-effective 2b-rad sequencing and genotyping analyses in non-model species. | high-throughput sequencing has revolutionized population and conservation genetics. rad sequencing methods, such as 2b-rad, can be used on species lacking a reference genome. however, transferring protocols across taxa can potentially lead to poor results. we tested two different iib enzymes (alfi and cspci) on two species with different genome sizes (the loggerhead turtle caretta caretta and the sharpsnout seabream diplodus puntazzo) to build a set of guidelines to improve 2b-rad protocols on n ... | 2020 | 32061018 |
| epidemiology of blood flukes (digenea: spirorchiidae) in sea turtles from tyrrhenian and adriatic seas, off italy. | the spirorchiidae is a family of blood flukes parasitizing turtles. spirorchiids may cause a wide range of inflammatory reactions in the vascular system of their host being frequently implicated with stranding and death of sea turtles worldwide. recent studies revealed the presence of two spirorchiid species in the mediterranean basin. our study presents comparative epidemiological data of spirorchiid infections in loggerhead turtles (caretta caretta) stranded during an eight-year period from ad ... | 2020 | 32033615 |
| female loggerhead sea turtles (caretta caretta l.) rarely remate during nesting season. | the goal of this study was to assess the consequences of single versus multiple paternity by identifying paternity of clutches per female to identify whether there were detectable costs or benefits. multiple mating can occur when the benefits of mating outweigh the costs, but if costs and benefits are equal, no pattern is expected. previous research on loggerhead sea turtle (caretta caretta) populations found male-biased breeding sex ratios and multiple mating by many females nesting in southwes ... | 2020 | 31988720 |
| twenty-three years of sea turtle stranding/ bycatch research in taiwan. | coastal sea turtle stranding and bycatch are common phenomena worldwide and have received more attention in recent years. they are caused by both natural and anthropogenic factors. one thousand and seventy-two turtles were reported to be victims of these phenomena from march 1997 to november 2019 in taiwan. number of stranding/bycatch were variable and infrequent for the first 14 years, but increased each year after 2012 and peaked in 2019 with 217 cases. most turtles were juveniles to subadults ... | 2019 | 31966345 |
| lesions observed post mortem in post-hatchling loggerhead sea turtles (caretta caretta) from a head start programme. | head start programmes are ex-situ conservation procedures consisting of the captive rearing of sea turtle hatchlings for several months in order to avoid high mortality rates in the first year of life. studies of the diseases of hatchling and post-hatchling turtles belonging to these programmes are scarce. we describe the gross and histological lesions found in 78 post-hatchling loggerhead sea turtles (caretta caretta) that died during captive rearing in the conservation programme of the cape ve ... | 2020 | 31955806 |
| the impact of sand moisture on the temperature-sex ratio responses of developing loggerhead (caretta caretta) sea turtles. | all species of sea turtles exhibit a cooler male/warmer female temperature-sex ratio response. field and experimental studies on loggerhead sea turtle sex ratios suggest that increased sand moisture impacts sea turtle sex ratios with, and perhaps beyond, a cooling effect. this study examines how varying sand moisture impacts the embryo's response to temperature. across three years, loggerhead (caretta caretta) sea turtle eggs were incubated at temperatures ranging from 28.0°c to 33.0°c. groups o ... | 2020 | 31954221 |
| a pilot study on molecular diagnosis of hapalotrema mistroides (digenea: spirorchiidae) infection in blood samples of live loggerhead turtles caretta caretta. | parasites of the family spirorchiidae cause disease and mortality in marine and freshwater turtles; two species, hapalotrema mistroides and neospirorchis sp., are reported in the resident population of loggerhead turtles of the mediterranean sea, with the first being the most widespread. in vivo diagnosis of spirorchidiasis can represent a challenge in guaranteeing prompt control and treatment of the disease and is currently limited to copromicroscopy. the aim of this study was the development o ... | 2020 | 31937305 |
| first data on microflora of loggerhead sea turtle (caretta caretta) nests from the coastlines of sicily. | caretta caretta is threatened by many dangers in the mediterranean basin, but most are human-related. the purposes of this research were: (i) to investigate microflora in samples from six loggerhead sea turtle nests located on the sicilian coast and (ii) to understand microbial diversity associated with nests, with particular attention to bacteria and fungi involved in failed hatchings. during the 2016 and 2018 summers, 456 eggs and seven dead hatchling from six nests were collected. we performe ... | 2020 | 31915211 |
| data on heteroplasmic mutations in mitochondrial genomes of loggerhead and hawksbill sea turtles: first approach. | the populations of loggerhead (caretta caretta) and hawksbill (eretmochelys imbricata) sea turtles are suffering an exponential decline due to anthropic and environmental actions that threaten their survival. in these turtle populations, the degree of heteroplasmic mutations commonly related with pathologies, has not been studied. in this data report, the specifications of each heteroplasmic site (region, mutation, length) and the percentage of heteroplasmy of each gene for four mitochondrial ge ... | 2020 | 31867420 |
| preserved collagen reveals species identity in archaeological marine turtle bones from caribbean and florida sites. | advancements in molecular science are continually improving our knowledge of marine turtle biology and evolution. however, there are still considerable gaps in our understanding, such as past marine turtle distributions, which can benefit from advanced zooarchaeological analyses. here, we apply collagen fingerprinting to 130 archaeological marine turtle bone samples up to approximately 2500 years old from the caribbean and florida's gulf coast for faunal identification, finding the vast majority ... | 2019 | 31824722 |
| bottom trawl catch comparison in the mediterranean sea: flexible turtle excluder device (ted) vs traditional gear. | the mediterranean sea is a biodiversity hotspot where intense fishing pressure is associated with high bycatch rates of protected species (sea turtles and cetaceans) and top predators (sharks). since the conservation of these species has become a priority, fishery scientists are faced with the challenge of reducing incidental catch, which entails high rates of mortality. among the species threatened by fishing activities, the loggerhead turtle (caretta caretta) is a charismatic species considere ... | 2019 | 31800581 |
| fidelity to foraging sites after long migrations. | patterns of animal movement associated with foraging lie at the heart of many ecological studies and often animals face decisions of staying in an environment they know versus relocating to new sites. the lack of knowledge of new foraging sites means there is risk associated with a decision to relocate (e.g. poor foraging) as well as a potential benefit (e.g. improved foraging). using a unique long-term satellite tracking dataset for several sea turtle species, combined with capture-mark-recaptu ... | 2020 | 31785174 |
| the widely occurring brittlestar ophiactis savignyi (amphilepidida: ophiactidae) as an epibiont on loggerhead sea turtle, caretta caretta. | we describe the first occurrence of the widely occurring brittlestar ophiactis savignyi (müller troschel, 1842) as epibionts on caretta caretta (linnaeus, 1758), the loggerhead sea turtles. on the sea turtle epibionts, the coronulid barnacles were well studied as listed in hayashi (2013), and recently some crustaceans were collected from loggerhead sea turtles and described as new species (tanabe et al. 2017; tanaka and hayashi 2019). in contrast, echinoderm epibionts listed from sea turtles are ... | 2019 | 31719338 |
| chelonocytherois omutai gen. et sp. nov. (crustacea: ostracoda) from the back of loggerhead sea turtles. | chelonocytherois omutai gen. et sp. nov., is found on the back of female loggerhead sea turtles on the nesting beach of the yakushima island, kagoshima prefecture, japan. the present study provides the first species-level identification and description of ostracoda as sea turtle epibionts. the new genus and species, which belongs to the family paradoxostomatidae brady and norman, 1889, can clearly be distinguished from other genera by the morphology of the carapace and the appendages. especially ... | 2019 | 31716198 |
| crude oil and dispersant cause acute clinicopathological abnormalities in hatchling loggerhead sea turtles (caretta caretta). | following the explosion of the deepwater horizon mc252 oil rig in 2010, 319 live sea turtles exposed to crude oil and oil-dispersant (corexit) combinations were admitted to rehabilitation centers for decontamination and treatment. treatment of oiled sea turtles was guided by expected physiological and pathological effects of crude oil exposure extrapolated from studies in other species and from a single loggerhead sea turtle (caretta caretta) study. while invaluable starting points, inherent lim ... | 2019 | 31681804 |
| humerus osteology, myology, and finite element structure analysis of cheloniidae. | adaptation of osteology and myology lead to the formation of hydrofoil foreflippers in cheloniidae (all recent sea turtles except dermochelys coriacea) which are used mainly for underwater flight. recent research shows the biomechanical advantages of a complex system of agonistic and antagonistic tension chords that reduce bending stress in bones. finite element structure analysis (fesa) of a cheloniid humerus is used to provide a better understanding of morphology and microanatomy and to link t ... | 2020 | 31674155 |
| fusarium spp. in loggerhead sea turtles (caretta caretta): from colonization to infection. | with the aim of evaluating the presence of fusarium spp. in sea turtles with and without lesions and assessing the risk factors favoring colonization and/or infection, 74 loggerhead sea turtles (caretta caretta) admitted to rescue and rehabilitation clinics in italy were analyzed. the study compared 31 individuals with no apparent macroscopic lesions and 43 individuals with macroscopic lesions. shell and skin samples were analyzed using calcofluor white with 10% potassium hydroxide, standard his ... | 2020 | 31662046 |
| gastrointestinal investigation of parasites and enterobacteriaceae in loggerhead sea turtles from italian coasts. | caretta caretta is the most abundant sea turtle species in the mediterranean, and studies on this species have vastly expanded during recent years, including those investigating gut bacterial and parasitic communities. members of these communities have been reported with variable prevalence and pathogenicity, mainly depending on their host and environment (e.g. lifespan, distribution, habitat, diet, health status and stressors). indeed, many species commonly inhabiting the sea turtle gastrointes ... | 2019 | 31653209 |
| maternal transfer of persistent organic pollutants to sea turtle eggs: a meta-analysis addressing knowledge and data gaps toward an improved synthesis of research outputs. | maternal transfer of persistent organic pollutants (pops) confronts developing embryos with a pollution legacy and poses conservation concerns due to its potential impacts unto subsequent generations. we conducted a systematic review focusing on: 1) processes of pop maternal transfer, 2) challenges and opportunities to synthesizing current knowledge on pop concentrations in eggs, and 3) a meta-analysis of patterns in current egg pollution data. results suggest selective maternal transfer of indi ... | 2020 | 31560792 |
| assessment of residual vascularization of the limb as a prognostic factor to avoid sea turtle flipper amputation. | entanglement occurs when a marine turtle becomes trapped within anthropogenic materials such as debris or fishery gear, inducing strangulation of anatomical parts such as flippers or the neck, causing deep lacerations, maiming, amputation, or choking. often, severely entangled flippers in captured or stranded turtles are removed surgically. turtles with flipper impairment have difficulty in swimming, diving, and feeding. our aim was to use color doppler ultrasound and multi-detector computer tom ... | 2020 | 31556837 |
| loggerhead sea turtles as sentinels in the western mediterranean: antibiotic resistance and environment-related modifications of gram-negative bacteria. | sea turtles possess relevant characteristics to serve as sentinel species for monitoring the health of marine ecosystems, which is currently threatened. this study examined 35 loggerhead turtles from the western mediterranean, focusing on the oral and cloacal prevalence of aerobic gram-negative bacteria, their antibiotic resistance and the influence of several variables linked both to the animal and the environment (i.e. estimated life stage; area, season and cause of recovery; plastic ingestion ... | 2019 | 31550577 |
| developmental differences between two marine turtle species and potential consequences for their survival at hatching. | anatomical variation is a major source for natural selection. marine turtles are endangered and survival predictions are of important biological, ecological, social, and political value. here, we perform a preliminary study illustrating how comparative embryology permits understanding of ontogenetic variation as a contributor for evolutionary fitness. to that end, we studied samples of chelonia mydas and caretta caretta embryos relative to a standardized staging system from the literature. we ex ... | 2019 | 31541925 |
| life-history constraints on maximum population growth for loggerhead turtles in the northwest atlantic. | conservation planning for protected species often relies on estimates of life-history parameters. a commonly used parameter is the instantaneous maximum population growth rate (rmax) that can be used to limit removals and design recovery targets. estimation of rmax can be challenging because of limited availability of species- and population-specific data and life-history information. we applied a method proposed by neil and lebreton, originally developed for birds, to loggerhead turtles. the me ... | 2019 | 31534667 |
| relative abundance of oceanic juvenile loggerhead sea turtles in relation to nest production at source rookeries: implications for recruitment dynamics. | after hatching, juveniles of most sea turtle species undertake long migrations across ocean basins and remain in oceanic habitats for several years. assessing population abundance and demographic parameters during this oceanic stage is challenging. two long-recognized deficiencies in population assessment are (i) reliance on trends in numbers of nests or reproductive females at nesting beaches and (ii) ignorance of factors regulating recruitment to the early oceanic stage. to address these criti ... | 2019 | 31506566 |
| sea turtle population genomic discovery: global and locus-specific signatures of polymorphism, selection, and adaptive potential. | in the era of genomics, single-nucleotide polymorphisms (snps) have become a preferred molecular marker to study signatures of selection and population structure and to enable improved population monitoring and conservation of vulnerable populations. we apply a snp calling pipeline to assess population differentiation, visualize linkage disequilibrium, and identify loci with sex-specific genotypes of 45 loggerhead sea turtles (caretta caretta) sampled from the southeastern coast of the united st ... | 2019 | 31504487 |
| a return to reasonableness and virtue in medical epistemology. | the foundationalist and anti-foundationalist conceptions of medical knowledge have been at loggerheads for decades. evidence-based medicine (ebm), the most prominent form of foundationalism, has attained wide appeal and acceptance among authorities. it proposes that evidence is the "base" upon which all clinical decisions should be grounded. others have countered that the clinical encounter is far too complex for a singular base, and the different factors that impose on a clinical decision canno ... | 2020 | 31475430 |
| speaking for our father. | a living will is a document in which an individual can communicate his or her health care choices to loved ones in the event that he or she is unable to do so directly. many surrogate decision-makers use living wills as guides; however, the existence of such documents does not entirely relieve them of their burden. surrogate decision-makers often need to consider the impact of the personal and family burdens entailed by their decisions, and the stress accompanying these burdens regularly creates ... | 2019 | 31447455 |
| mortality associated with ingestion of sea urchins in loggerhead sea turtles (caretta caretta): a case series. | the aims of this study were: a) to describe the pathological and laboratory findings in a case series of stranding and mortality associated with ingestion of large amounts of sea urchins in loggerhead turtles (caretta caretta), and b) to alert veterinarians and biologists involved in sea turtle conservation of this cause of stranding and/or death. | 2019 | 31442294 |
| new insights into the gut microbiome in loggerhead sea turtles caretta caretta stranded on the mediterranean coast. | caretta caretta is the most common sea turtle species in the mediterranean sea. the species is threatened by anthropomorphic activity that causes thousands of deaths and hundreds of strandings along the mediterranean coast. stranded turtles are often cared for in rehabilitation centres until they recover or die. the objective of this study was to characterize the gut microbiome of nine sea turtles stranded along the sicilian coast of the mediterranean sea using high-throughput sequencing analysi ... | 2019 | 31412070 |
| loggerhead sea turtle (caretta caretta) diving changes with productivity, behavioral mode, and sea surface temperature. | the relationship between dive behavior and oceanographic conditions is not well understood for marine predators, especially sea turtles. we tagged loggerhead turtles (caretta caretta) with satellite-linked depth loggers in the gulf of mexico, where there is a minimal amount of dive data for this species. we tested for associations between four measurements of dive behavior (total daily dive frequency, frequency of dives to the bottom, frequency of long dives and time-at-depth) and both oceanogra ... | 2019 | 31390354 |
| mercury and methylmercury in carapace of the marine turtle caretta caretta, in northeastern brazil and its potential for environmental monitoring. | the present work tests the use of carapace fragments of the marine turtle caretta caretta as a tool for environmental biomonitoring of mercury (hg) and to evaluate the influence of biological and ecological factors in hg concentrations. samples of carapace fragments were obtained during the nesting season of 2012 and 2016 and were analyzed for their total-hg and methyl-hg concentrations and the isotopic composition of carbon and nitrogen (δ15n and δ13c). seventy-six females were sampled, with an ... | 2019 | 31291384 |
| plasma colloid osmotic pressure in chronically debilitated loggerhead sea turtles (caretta caretta). | colloid osmotic pressure (cop) is an important component of the forces that manage capillary filtration and is determined by circulating plasma proteins. patients affected by conditions resulting in hypoproteinemia often suffer severe hemodynamic derangements, including decreased cop. because chronically debilitated sea turtles (cdt) present with severe hypoproteinemia, the objectives of this study were to 1) determine differences in plasma cop and blood analyte data (packed cell volume [pcv], s ... | 2019 | 31260201 |
| neurologic and computed tomography findings in sea turtles with history of traumatic injury. | boat strikes have been widely documented as a major cause of anthropogenic trauma and mortality in sea turtles. axial trauma in these species involves the head and/or carapace and may cause severe damage to the nervous and pulmonary systems. the aims of this study were to develop an updated protocol for neurologic examinations in sea turtles, to describe computed tomography (ct) findings in sea turtles with sustained trauma, and to associate ct findings with neurologic status in sea turtles with ... | 2019 | 31260200 |
| advancing transfusion medicine in sea turtles: optimization of a cross-matching protocol. | whole blood transfusions are an essential treatment modality during rehabilitation of stranded sea turtles, however, standardized protocols for transfusions are not available in reptile medicine. the objective of this study was to optimize a cross-matching protocol for sea turtle blood transfusions. fresh venous blood samples from 15 turtles (n = 14 green turtles, chelonia mydas [cm]; n = 1 loggerhead sea turtle, caretta caretta [cc]) were tested using a temperature-appropriate (i.e., reflecting ... | 2019 | 31260195 |
| ocular spirorchiidiosis in sea turtles from brazil. | the causes of the beaching and death of sea turtles have not been fully clarified and continue to be studied. mild, moderate and severe lesions caused by spirorchiidiosis have been seen for decades in different organs and were recently defined as the cause of death of a loggerhead turtle. in the present study, eyes and optic nerves were analysed in green sea turtles with spirorchiidiosis and no other debilitating factors. injuries to the optic nerve and choroid layer were described in 235 animal ... | 2019 | 31248467 |
| effects of local climate on loggerhead hatchling production in brazil: implications from climate change. | sea turtle eggs are heavily influenced by the environment in which they incubate, including effects on hatching success and hatchling viability (hatchling production). it is crucial to understand how the hatchling production of sea turtles is influenced by local climate and how potential changes in climate may impact future hatchling production. generalized additive models were used to determine the relationship of six climatic variables at different temporal scales on loggerhead turtle (caretta ... | 2019 | 31222177 |
| baseline plasma thromboelastography in kemp's ridley (lepidochelys kempii), green (chelonia mydas) and loggerhead (caretta caretta) sea turtles and its use to diagnose coagulopathies in cold-stunned kemp's ridley and green sea turtles. | cold-stunning in sea turtles is a frequent natural cause of mortality and is defined as a hypothermic state due to exposure to water temperatures <12°c. derangements of biochemistry and hematology data by cold stunning have been well documented, although the effects on coagulation have not yet been investigated. the objectives of this study were to characterize the hemostatic state of non-cold-stunned sea turtles and to compare cold-stunned sea turtles at admission and after successful rehabilit ... | 2019 | 31120663 |
| effective mydriasis in juvenile loggerhead turtles (caretta caretta) following topical administration of rocuronium bromide and 10% phenylephrine. | to determine the combined mydriatic effects of topical rocuronium bromide and phenylephrine in juvenile loggerhead turtles and identify any adverse effects associated with treatment. | 2020 | 31120194 |
| ophthalmic lesions in a population of cold-stunned sea turtles (chelonia mydas, lepidochelys kempii, caretta caretta). | to document ocular lesions present in cold-stunned sea turtles and determine the impact of these lesions on their release. | 2019 | 30983145 |
| correction to: epidemiology of sulcascaris sulcata (nematoda: anisakidae) ulcerous gastritis in the mediterranean loggerhead sea turtle (caretta caretta). | the original version of this article contained a mistake in the value of bar in figure 3 caption. it should be bar = 200 μm instead of bar = 500 μm. | 2019 | 30945016 |
| activity, not submergence, explains diving heart rates of captive loggerhead sea turtles. | marine turtles spend their life at sea and can rest on the seafloor for hours. as air-breathers, the breath-hold capacity of marine turtles is a function of oxygen (o2) stores, o2 consumption during dives and hypoxia tolerance. however, some physiological adaptations to diving observed in mammals are absent in marine turtles. this study examined cardiovascular responses in loggerhead sea turtles, which have even fewer adaptations to diving than other marine turtles, but can dive for extended du ... | 2019 | 30936271 |
| molecular evidence for resurrection of plesiochorus elongatus (digenea: gorgoderidae): an urinary bladder parasite of sea turtles. | trematodes of the genus plesiochorus were recovered from the urinary bladder of a stranded female adult loggerhead sea turtle, caretta caretta, on a beach in rio de janeiro state, brazil. morphological analysis of the specimens revealed characteristics resembling the sub-species plesiochorus cymbiformis elongatus rather than the recently synonymised plesiochorus cymbiformis. molecular phylogenetic analysis of the its2 region also showed that p. c. elongatus was distinct from p. cymbiformis and r ... | 2019 | 30926538 |
| epidemiology of sulcascaris sulcata (nematoda: anisakidae) ulcerous gastritis in the mediterranean loggerhead sea turtle (caretta caretta). | sulcascaris sulcata rudolphi 1819 is a gastric nematode parasite of sea turtles. here, we report the occurrence and describe for the first time the pathological changes caused by s. sulcata in the mediterranean loggerhead sea turtle (caretta caretta) stranded along the tyrrhenian coast and northern adriatic coast of italy. prevalence of infection was significantly higher in loggerhead sea turtles from the adriatic sea. both prevalence and abundance of infection showed an increasing trend along w ... | 2019 | 30859311 |
| sea turtle tears: a novel, minimally invasive sampling method for 1h-nmr metabolomics investigations with cold stun syndrome as a case study. | we investigated a method for collecting and processing tear samples from loggerhead (caretta caretta), green (chelonia mydas), and kemp's ridley (lepidochelys kempii) sea turtles and to identify tear biomarkers and potential differences between unaffected sea turtles and those affected by cold stun syndrome. tear samples from unaffected and cold-stunned loggerhead, green, and kemp's ridley sea turtles were collected with sterile, cellulose, latex-free ophthalmic eye spears. we pooled spears to a ... | 2019 | 30856047 |
| shipping routes through core habitat of endangered sperm whales along the hellenic trench, greece: can we reduce collision risks? | the mediterranean sperm whale population is listed as 'endangered". the hellenic trench is the core habitat of the eastern mediterranean sperm whale sub-population that numbers two to three hundred individuals. major shipping routes running on or very close to the 1000 m depth contour along the hellenic trench are causing an unsustainable number of ship-strikes with sperm whales reviewed in this paper. sperm whale sighting and density data were combined with specific information on the vessel tr ... | 2019 | 30811429 |
| ingestion of plastic marine litter by sea turtles in southern brazil: abundance, characteristics and potential selectivity. | the ingestion of plastic marine litter (pml) by sea turtles is widespread and concerning, and the five species that occur in the southwestern atlantic - green, loggerhead, olive ridley, leatherback and hawksbill - are vulnerable to this pollution. here, we quantified and characterized pml ingested by these species in southern brazil, and observed pml ingestion in 49 of 86 sampled individuals (~57.0%). green turtles presented the highest rates and variety of ingested plastics, and such ingestion ... | 2019 | 30803675 |
| cytotoxicity of organic and inorganic compounds to primary cell cultures established from internal tissues of chelonia mydas. | chemical contaminants have been found in the tissues of sea turtles from all over the world; however, very little is known about the effects. recently, in vitro alternatives to live animal testing have been applied to sea turtles due to their ethical and practical benefits. while primary skin fibroblasts have been established for several species of sea turtle, cells from internal organs are lacking, though they may be more relevant due to the well documented accumulation of contaminants within i ... | 2019 | 30769319 |
| towards the development of standardised sea turtle primary cell cultures for toxicity testing. | chemical contaminants are known to accumulate in marine megafauna globally, but little is known about how this impacts animal health. in vitro assays offer an ethical, reproducible and cost-effective alternative to live animal toxicity testing on large, long-lived or threatened species, such as sea turtles. however, using a cell culture from a single animal raise the question of whether the toxicity observed adequately represents the toxicity in that species. this study examined variation in the ... | 2019 | 30769204 |
| blood biochemistry and haematology of migrating loggerhead turtles (caretta caretta) in the northwest atlantic: reference intervals and intra-population comparisons. | we documented blood biochemistry and haematology of healthy loggerhead turtles (caretta caretta) in the northwest (nw) atlantic in order to establish clinical reference intervals (ris) for this threatened population. blood samples were analysed from migratory loggerheads captured off the mid-atlantic coast of the usa in 2011, 2012, 2013 and 2016 as part of a long-term research program. blood variables were determined using a point-of-care analyser, and a veterinary diagnostic laboratory service. ... | 2019 | 30746149 |
| the effect of biologging systems on reproduction, growth and survival of adult sea turtles. | telemetry and biologging systems, 'tracking' hereafter, have been instrumental in meeting the challenges associated with studying the ecology and behaviour of cryptic, wide-ranging marine mega-vertebrates. over recent decades, globally, sea turtle tracking has increased exponentially, across species and life-stages, despite a paucity of studies investigating the effects of such devices on study animals. indeed, such studies are key to informing whether data collected are unbiased and, whether de ... | 2019 | 30723544 |
| isolation, structure elucidation and biological evaluation of lagunamide d: a new cytotoxic macrocyclic depsipeptide from marine cyanobacteria. | lagunamide d, a new cytotoxic macrocyclic depsipeptide, was discovered from a collection of marine cyanobacteria from loggerhead key in the dry tortugas, florida. an intramolecular ester exchange was observed, where the 26-membered macrocycle could contract to a 24-membered compound via acyl migration at the 1,3-diol unit, and the transformation product was named lagunamide d'. the planar structures of both compounds were elucidated using a combination of nuclear magnetic resonance (nmr) spectro ... | 2019 | 30717076 |
| phacoemulsification cataract surgery in the loggerhead turtle (caretta caretta): surgical technique and outcomes in 10 cases. | cataract removal using phacoemulsification was performed in 10 loggerhead turtles being rehabilitated after stranding. all turtles had significant systemic abnormalities and had cataracts either at the time of rescue or developed them during rehabilitation. surgical difficulties encountered included an extremely soft globe that did not allow for a partial thickness corneal incision, incomplete topical anesthesia of the ocular surface with proparacaine, inability to dilate the pupil pharmacologic ... | 2019 | 30706667 |
| nmr metabolomic analysis of skeletal muscle, heart, and liver of hatchling loggerhead sea turtles (caretta caretta) experimentally exposed to crude oil and/or corexit. | we used nuclear magnetic spectroscopy (nmr) to evaluate the metabolic impacts of crude oil, corexit 5900a, a dispersant, and a crude oil corexit 5900a mixture exposure on skeletal muscle, heart, and liver physiology of hatchling loggerhead sea turtles (caretta caretta). tissue samples were obtained from 22 seven-day-old hatchlings after a four day cutaneous exposure to environmentally relevant concentrations of crude oil, corexit 5900a, a combination of crude oil and corexit 9500a, or a seawater ... | 2019 | 30691098 |
| marine debris at nesting grounds used by the northern gulf of mexico loggerhead recovery unit. | anthropogenic marine debris (amd) can cause obstructions for nesting marine turtles and hatchlings, increase their exposure to toxicants, and potentially alter the incubating environment of clutches. given the potential impacts of amd on marine turtles, this study provides baseline information on the abundance and distribution of amd at the ten highest density nesting beaches in florida used by the northern gulf of mexico loggerhead recovery unit. monitoring for amd at nesting beaches was conduc ... | 2019 | 30686449 |
| comparing quantity of marine debris to loggerhead sea turtle (caretta caretta) nesting and non-nesting emergence activity on jekyll island, georgia, usa. | marine debris is defined as any manmade item, commonly plastics, which ends up in the ocean regardless of the source. debris found along coastlines can cause harm or even death to nesting and hatchling sea turtles through ingestion, entrapment, or entanglement. jekyll island is a prominent nesting beach for loggerhead sea turtles with over 1700 emergences from 2012 to 2017. this study uses debris logged through noaa's marine debris tracker and loggerhead sea turtle nesting activity on jekyll isl ... | 2019 | 30686404 |
| assessing karenia brevis red tide as a mortality factor of sea turtles in florida, usa. | data on karenia brevis red tides (≥105 cells l-1) and on dead or debilitated (i.e. stranded) kemp's ridleys lepidochelys kempii, loggerheads caretta caretta, green turtles chelonia mydas, hawksbills eretmochelys imbricata, and leatherbacks dermochelys coriacea documented in florida during 1986-2013 were evaluated to assess red tides as a sea turtle mortality factor. unusually large numbers of stranded sea turtles were found coincident with red tides primarily along florida's gulf coast but also ... | 2019 | 30628577 |
| sympatry or syntopy? investigating drivers of distribution and co-occurrence for two imperiled sea turtle species in gulf of mexico neritic waters. | animals co-occurring in a region (sympatry) may use the same habitat (syntopy) within that region. a central aim in ecology is determining what factors drive species distributions (i.e., abiotic conditions, dispersal limitations, and/or biotic interactions). assessing the degree of biotic interactions can be difficult for species with wide ranges at sea. this study investigated the spatial ecology of two sea turtle species that forage on benthic invertebrates in neritic gom waters: kemp's ridley ... | 2018 | 30619571 |
| an immune response-based approach to evaluate physiological stress in rehabilitating loggerhead sea turtle. | the sea turtles maintaining in rescue centres can cause physiological stress to the animals with subsequent effects, such as the imbalance of immune system components. it is therefore crucial to investigate how innate immune responses are influenced by stress within recovery centers with the aim to use them as primary tools for the evaluation of the rescued specimens' health status and for developing more effective conservative strategies. in this study we monitored for the first time different ... | 2019 | 30593346 |
| aeromonas induced polyostotic osteomyelitis in a juvenile loggerhead sea turtle caretta caretta. | bacterial bone infections have been occasionally reported in wild sea turtles. this study reports on a sub-adult caretta caretta affected by aeromonas hydrophila osteomyelitis, with extensive involvement of cranial and caudal flippers. the turtle was severely debilitated, had limited flipper mobility and showed signs of pain in reaction to manipulation. radiographs and computed tomography revealed multiple lytic bone lesions. since an infectious polyostotic osteomyelitis was suspected, the turtl ... | 2018 | 30530932 |