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marine turtle reception of bone-conducted sound.an individual each of the marine turtles, caretta caretta and lepidochelys kempi, were stimulated with audiofrequencies delivered directly to the skull. startle responses were observed to underwater stimuli of .25 and .5 kc/s. neural responses to underwater bone-conducted (bc) sound were recorded in another aquatic form, the snapping turtle, chelydridae serpentina. the morphology of the neural response suggested the involvement of the auditory system in bc responsivity. bc hearing appears to be ...19836679547
using telemetry to mitigate the bycatch of long-lived marine vertebrates.the unintended bycatch of long-lived marine species in fishing gear is an important global conservation issue. one suite of management approaches used to address this problem restricts or modifies fishing practices in areas where the probability of bycatch is believed to be high. information on the distribution and behavior of the bycaught species is a desirable component of any such scheme, but such observations are often lacking. we describe a spatially explicit approach that combines data on ...200919769110
surgical repair of severe flipper lacerations in a loggerhead, caretta caretta, and a kemp's ridley, lepidochelys kempii, sea turtle.a loggerhead, caretta caretta, and a kemp's ridley, lepidochelys kempii, sea turtle were presented to the north carolina state university, college of veterinary medicine for evaluation of distal flipper injuries. the goal for both animals at presentation was to preserve limb function and avoid complete amputation. a severe full-thickness flipper laceration was successfully reapposed in the first case, and a rotational flap was used to cover exposed tissue in the second case. limb function was im ...200920063821
evaluation of hematology and serum biochemistry of cold-stunned green sea turtles (chelonia mydas) in north carolina, u.s.a.hypothermia or cold-stunning is a condition in which the body temperature of an animal decreases below normal physiologic range and which has been linked to severe morbidity in sea turtles. reports have focused on the physiologic changes caused by cold-stunning in kemp's ridley sea turtles (lepidochelys kempii) and loggerhead sea turtles (caretta caretta), but few have evaluated the green sea turtle (chelonia mydas). this study evaluated hematologic and serum biochemical profiles of cold-stunned ...201122946402
the head and neck anatomy of sea turtles (cryptodira: chelonioidea) and skull shape in testudines.sea turtles (chelonoidea) are a charismatic group of marine reptiles that occupy a range of important ecological roles. however, the diversity and evolution of their feeding anatomy remain incompletely known.201223144831
dehydration as an effective treatment for brevetoxicosis in loggerhead sea turtles (caretta caretta).harmful algal blooms are known to cause morbidity and mortality to a large number of marine and estuarine organisms worldwide, including fish and marine mammals, birds, and turtles. the effects of these algal blooms on marine organisms are due to the various toxins produced by the different algal species. in southwest florida, frequent blooms of the dinoflagellate karenia brevis, which produces neurotoxins known as brevetoxins, cause widespread fish kills and affect many marine animals. in 2005- ...201323805564
global analysis of anthropogenic debris ingestion by sea turtles.ingestion of marine debris can have lethal and sublethal effects on sea turtles and other wildlife. although researchers have reported on ingestion of anthropogenic debris by marine turtles and implied incidences of debris ingestion have increased over time, there has not been a global synthesis of the phenomenon since 1985. thus, we analyzed 37 studies published from 1985 to 2012 that report on data collected from before 1900 through 2011. specifically, we investigated whether ingestion prevale ...201423914794
fishery gear interactions from stranded bottlenose dolphins, florida manatees and sea turtles in florida, u.s.a.documenting the extent of fishery gear interactions is critical to wildlife conservation efforts, especially for reducing entanglements and ingestion. this study summarizes fishery gear interactions involving common bottlenose dolphins (tursiops truncatus truncatus), florida manatees (trichechus manatus latirostris) and sea turtles: loggerhead (caretta caretta), green turtle (chelonia mydas), leatherback (dermochelys coriacea), hawksbill (eretmochelys imbricata), kemp's ridley (lepidochelys kemp ...201424613263
the ontogeny of morphological defenses in kemp's ridley (lepidochelys kempii) and loggerhead (caretta caretta) sea turtles.marine turtles are large reptiles that compensate for high juvenile mortality by producing hundreds of hatchlings during a long reproductive lifespan. most hatchlings are taken by predators during their migration to, and while resident in, the open ocean. their survival depends upon crypticity, minimizing movement to avoid detection, and foraging efficiently to grow to a size too difficult for predators to either handle or swallow. while these behavioral antipredator tactics are known, changes i ...201526126953
risk analysis reveals global hotspots for marine debris ingestion by sea turtles.plastic marine debris pollution is rapidly becoming one of the critical environmental concerns facing wildlife in the 21st century. here we present a risk analysis for plastic ingestion by sea turtles on a global scale. we combined global marine plastic distributions based on ocean drifter data with sea turtle habitat maps to predict exposure levels to plastic pollution. empirical data from necropsies of deceased animals were then utilised to assess the consequence of exposure to plastics. we mo ...201626365568
deepwater horizon oil spill impacts on sea turtles could span the atlantic.we investigated the extent that the 2010 deepwater horizon oil spill potentially affected oceanic-stage sea turtles from populations across the atlantic. within an ocean-circulation model, particles were backtracked from the gulf of mexico spill site to determine the probability of young turtles arriving in this area from major nesting beaches. the abundance of turtles in the vicinity of the oil spill was derived by forward-tracking particles from focal beaches and integrating population size, o ...201526701754
conservation hotspots for marine turtle nesting in the united states based on coastal development.coastal areas provide nesting habitat for marine turtles that is critical for the persistence of their populations. however, many coastal areas are highly affected by coastal development, which affects the reproductive success of marine turtles. knowing the extent to which nesting areas are exposed to these threats is essential to guide management initiatives. this information is particularly important for coastal areas with both high nesting density and dense human development, a combination th ...201627907265
perfluorinated compounds in the plasma of loggerhead and kemp's ridley sea turtles from the southeastern coast of the united states.perfluorinated compounds (pfcs) have been measured in blood of humans and wildlife and are considered globally distributed contaminants. we examined 12 pfcs in the plasma of 73 loggerhead sea turtles (caretta caretta) and 6 kemp's ridley sea turtles (lepidochelys kempii) captured from inshore waters of core sound, north carolina (nc), and offshore waters of south carolina, georgia, and florida (sc-fl). perfluorooctanesulfonate (pfos) and perfluorooctanoic acid (pfoa) were the dominant compounds, ...200516382930
evaluation of five clinical chemistry analyzers for use in health assessment in sea turtles.to compare blood biochemical values obtained from a handheld analyzer, 2 tabletop analyzers, and 2 diagnostic laboratories by use of replicate samples of sea turtle blood.200818673037
disseminated mycotic infection caused by colletotrichum acutatum in a kemp's ridley sea turtle (lepidochelys kempi).colletotrichum acutatum is a cosmopolitan plant pathogen with a wide host range. while the organism's phytopathogenic potential has been well documented, it has never been reported as an etiologic agent of disease in either animals or humans. in this case, a juvenile kemp's ridley sea turtle, lepidochelys kempi, probably with immune compromise following cold stunning (extended hypothermia), developed a disseminated mycotic infection in the lungs and kidneys. prophylactic treatment with oral itra ...200212409409
neurologic examination of sea turtles.to determine whether neurologic examination techniques established for use on dogs and cats could be adapted for use on sea turtles.19979343552
chemosensory orientation behavior in juvenile sea turtles.it has been widely believed for several decades that hatchling sea turtles imprint to chemical cues characteristic of their natal beach and use this information as part of a repertoire of mechanisms enabling their return to the same beach for mating and nesting. this has proven very difficult to test. although the imprinting theory is conceptually simple, functionally it is quite complex. this involves not only chemical imprinting of nestlings but growth and migration to habitats where the adult ...19938477344
sex-specific dna in reptiles with temperature sex determination.banded krait minor ("bkm") satellite dna, originating in the w-chromosome of the snake bungarus fasciatus, has been found in the genome of diverse eukaryotic species including fruit fly, quail, and horse. concentrations of bkm have been found in the presumptive w-chromosome of snakes with isomorphic sex chromosomes and in the male-determining region of the y-chromosome in mouse and man. we therefore asked whether bkm-related dna might be present in quantitative excess in dna from males or female ...19902156951
characteristics of the anion transport system in sea turtle erythrocytes.erythrocytes of kemp's ridley sea turtle (lepidochelys kempi) contain a 100- to 105-kda protein that is reactive with a monoclonal antibody to the membrane domain of human erythrocyte band 3. based on inhibition of membrane hco(3-)-cl- exchange with 4-acetamido-4'-isothiocyanostilbene-2,2'-disulfonic acid (sits), sea turtle erythrocytes were found to contain 4 x 10(6) copies of band 3 per cell. unidirectional hco3- transfer, specifically hco3- out----in-cl-in----out exchange, where subscript in- ...19911951771
marine turtle middle-ear anatomy.the middle-ear structures from 5 atlantic loggerhead (caretta caretta) and 1 atlantic ridley (lepidochelys kempi) marine turtles from dead specimens found stranded in the lower chesapeake bay were dissected and examined superficially and by light microscopy. the marine turtle middle ear is poorly adapted as an aerial receptor in mammalian and reptilian terms. however, it appears well designed as a peripheral component of a bone conduction system. the thick tympanum, while disadvantageous as an a ...19853836997
direct evidence of swimming demonstrates active dispersal in the sea turtle "lost years".although oceanic dispersal in larval and juvenile marine animals is widely studied, the relative contributions of swimming behavior and ocean currents to movements and distribution are poorly understood [1-4]. the sea turtle "lost years" [5] (often referred to as the surface-pelagic [6] or oceanic [7] stage) are a classic example. upon hatching, young turtles migrate offshore and are rarely observed until they return to coastal waters as larger juveniles [5]. sightings of small turtles downcurre ...201525866396
glycoproteins in rathke's gland secretions of loggerhead (caretta caretta) and kemp's ridley (lepidochelys kempi) sea turtles.1. the rathke's gland secretions of loggerhead (caretta caretta) and kemp's ridley (lepidochelys kempi) sea turtles contain 20 and 10 mg of protein/ml, respectively. the proteins of each species were separated by gel filtration into two major fractions, one (35%) in the excluded volume, and one (50%) with a molecular mass of approximately 55 kda. 2. the 55 kda fraction from each species' secretions exhibits a single band on sds-page (mr approximately equal to 55,000) and a single amino-terminal ...19892591198
pulmonary hyalohyphomycosis caused by fusarium spp in a kemp's ridley sea turtle (lepidochelys kempi): an immunohistochemical study.to describe the microscopic and immunohistochemical findings in a case of pulmonary hyalohyphomycosis in a kemp's ridley sea turtle (lepidochelys kempi).200415768112
hybridization among the ancient mariners: characterization of marine turtle hybrids with molecular genetic assays.reports of hybridization between marine turtle species (family cheloniidae) have been difficult to authenticate based solely on morphological evidence. here we employ molecular genetic assays to document the sporadic, natural occurrence of viable interspecific hybrids between species representing four of the five genera of cheloniid sea turtles. using multiple dna markers from single-copy nuclear loci, eight suspected hybrids (based on morphology) were confirmed to be the products of matings inv ...19957657993
monoclonal antibodies for the measurement of class-specific antibody responses in the green turtle, chelonia mydas.monoclonal antibodies (mabs) were developed against the known immunoglobulin classes of the green turtle, chelonia mydas. plasma protein fractions enriched for 5.7s igy, 7s igy, and igm turtle immunoglobulins were used to immunize balb/c mice for hybridoma production and for hybridoma screening. fifteen hybridomas produced mabs with specificity for turtle immunoglobulins and for affinity purified dinitrophenol (dnp) specific turtle antibodies. three mabs specific for either turtle 5.7s igy heavy ...19957502491
simulated hibernation of sea turtles in the laboratory: i. feeding, breathing frequency, blood ph, and blood gases.captive immature green (chelonia mydas) and kemp's ridley (lepidochelys kempi) sea turtles were examined to determine if a hibernation-like state could be induced under controlled conditions. both species demonstrated that they are able to acclimate to cold temperatures behaviorally. however, the two species appeared to respond differently to decreasing temperature. whereas the green turtles tolerated the onset of cold water temperatures by reducing swimming activity, the ridleys became very agi ...19979262006
a molecular phylogeny for marine turtles: trait mapping, rate assessment, and conservation relevance.nucleotide sequences from the cytochrome b gene of mitochondrial dna were employed to resolve phylogenetic controversies and to assess molecular evolutionary rates in marine turtles (chelonioidea). findings of special relevance to conservation biology include discovery of a distant relationship between natator and other cheloniid species, the paraphyly of chelonia mydas with respect to chelonia agassizi, and genetic distinctiveness of lepidochelys kempi from lepidochelys olivacea. a longstanding ...19938516304
dna fingerprinting in reptiles: bkm hybridization patterns in crocodilia and chelonia.the simple tetranucleotide repeat gata (gaca) occurs in all eukaryotes so far studied. in many species, the arrangement of these sequences varies considerably among individuals. thus gata (gaca) type probes produce dna fingerprints when hybridized with restricted dna from different individuals within a species. banded krait minor (bkm) satellite dna (related to sequences originally recovered from the w chromosome of the banded krait and consisting essentially of a series of gata repeats) is foun ...19911889739
mycobacterium chelonae osteoarthritis in a kemp's ridley sea turtle (lepidochelys kempii).a stranded kemp's ridley sea turtle (lepidochelys kempii) was rescued and treated at the national aquarium in baltimore (maryland, usa) for inappetence and epidermal appendicular and plastral lesions. after 4 mo of care, the turtle developed a swollen left elbow joint. within 1 mo of initial swelling, osteolytic lesions developed in the proximal radius and ulna. the elbow joint was surgically debrided, flushed, and cultured. the incision dehisced 10 days after surgery. mycobacterium chelonae was ...200314567241
characterization of the disulfide bonds and the n-glycosylation sites in the glycoprotein from rathke's gland secretions of kemp's ridley sea turtle (lepidochelys kempi).the disulfide bonds and n-glycosylation sites in a glycoprotein from the rathke's gland secretion of the kemp's ridley turtle (lepidochelys kempi) have been characterized with respect to peptide sequences and glycan structures. the glycoprotein constitutes about 70% of the total protein in the secretion, and based on partial sequence information, it shows more than 20% identity with both the catalytic (esterases) and the noncatalytic (thyroglobulin) members of the esterase/lipase family of prote ...19968789716
surgical removal of an abscess associated with fusarium solani from a kemp's ridley sea turtle (lepidochelys kempii).a cold-stunned kemp's ridley sea turtle, lepidochelys kempii, developed an abscess associated with fusarium solani, vibrio alginolyticus, and a shewenalla species after receiving a bite wound to the front flipper during rehabilitation. the lesion failed to respond to medical therapy and was treated successfully with surgery. histopathology of the excised tissue demonstrated septic heterophilic inflammation with necrosis and granulation tissue, fungal elements, and bacteria, despite appropriate a ...201222779250
prevalence, distribution, and progression of radiographic abnormalities in the lungs of cold-stunned kemp's ridley sea turtles (lepidochelys kempii): 89 cases (2002-2005).to evaluate the prevalence, distribution, and progression of radiographic abnormalities in the lungs of cold-stunned kemp's ridley sea turtles (lepidochelys kempii) and associations between these abnormalities and body weight, carapace length, and hematologic and plasma biochemical variables.201323402416
assessment of ground transportation stress in juvenile kemp's ridley sea turtles (lepidochelys kempii).sea turtle rehabilitation centres frequently transport sea turtles for long distances to move animals between centres or to release them at beaches, yet there is little information on the possible effects of transportation-related stress ('transport stress') on sea turtles. to assess whether transport stress is a clinically relevant concern for endangered kemp's ridley sea turtles (lepidochelys kempii), we obtained pre-transport and post-transport plasma samples from 26 juvenile kemp's ridley se ...201627293750
ophthalmic variables in rehabilitated juvenile kemp's ridley sea turtles (lepidochelys kempii).to determine central corneal thickness (total corneal thickness [tct], epithelial thickness [et], and stromal thickness [st]), anterior chamber depth (acd), and intraocular pressure (iop) in kemp's ridley sea turtles (lepidochelys kempii).201626953922
tissue enzyme activities in kemp's ridley turtles (lepidochelys kempii).this study determined the tissue distribution and activities of eight enzymes in 13 juvenile kemp's ridley turtles (lepidochelys kempii) that died after stranding. samples from the liver, kidney, skeletal muscle, cardiac muscle, pancreas, lung, small intestine, and spleen were evaluated for activities of alanine aminotransferase (alt), alkaline phosphatase (alp), amylase, aspartate aminotransferase (ast), creatine kinase (ck), γ-glutamyl transferase (ggt), lactate dehydrogenase (ldh), and lipase ...201526352978
diagnosis and management of enterococcus spp infections during rehabilitation of cold-stunned kemp's ridley turtles (lepidochelys kempii): 50 cases (2006-2012).to evaluate clinical data for cold-stunned kemp's ridley turtles (lepidochelys kempii) with enterococcus spp infections during rehabilitation.201425029311
predicting the distribution of oceanic-stage kemp's ridley sea turtles.the inaccessibility of open ocean habitat and the cryptic nature of small animals are fundamental problems when assessing the distribution of oceanic-stage sea turtles and other marine animals sharing similar life-history traits. most methods that estimate patterns of abundance cannot be applied in situations that are extremely data limited. here, we use a movement ecology framework to generate the first predicted distributions for the oceanic stage of the kemp's ridley sea turtle (lepidochelys ...201323945206
foraging area fidelity for kemp's ridleys in the gulf of mexico.for many marine species, locations of key foraging areas are not well defined. we used satellite telemetry and switching state-space modeling (ssm) to identify distinct foraging areas used by kemp's ridley turtles (lepidochelys kempii) tagged after nesting during 1998-2011 at padre island national seashore, texas, usa (pais; n = 22), and rancho nuevo, tamaulipas, mexico (rn; n = 9). overall, turtles traveled a mean distance of 793.1 km (±347.8 sd) to foraging sites, where 24 of 31 turtles showed ...201323919146
characterization of gamma-glutamyl transpeptidase from the rathke's gland secretions of kemp's ridley sea turtles (lepidochelys kempi).the secretion produced by rathke's glands of kemp's ridley sea turtles (lepidochelys kempi) contains the enzyme gamma-glutamyl transpeptidase. the approximately 200 kda enzyme contains two different subunits, alpha (54 kda) and beta (21 kda), in an unknown stoichiometry. the enzyme transfers gamma-glu from a number of different donors, such as glutamine, glutathione, s-me-glutathione, n epsilon(gamma-glu)-lys, gamma-glu-ala, and other gamma-glutamyl amino acids, either to water or to a variety o ...19957599989
kemp's ridley sea turtles. 199217778666
kemp's ridley sea turtles. 199217778665
a dubious battle to save the kemp's ridley sea turtle. 199217843483
metabolic and respiratory status of cold-stunned kemp's ridley sea turtles (lepidochelys kempii)."cold-stunning" of sea turtles has been reported as a naturally occurring stressor for many years; however, the physiologic status of cold-stunned turtles has only been partially described. this study investigated initial and convalescent venous blood gas, acid-base, and critical plasma biochemical data for 26 naturally cold-stunned kemp's ridley sea turtles (lepidochelys kempii) from cape cod, ma, usa. samples were analyzed for ph, pco(2), po(2), bicarbonate, plasma osmolality, sodium, potassiu ...200717431640
olfactory-based orientation in artificially imprinted sea turtles.sea turtles (lepidochelys kempi) are being artificially imprinted to padre island, texas, in an effort to establish a new nesting population. these turtles spent more time per exposure in solutions made of padre island sand and seawater than in control solutions in a multiple-choice test. this is evidence that sea turtles may detect differences in natural water samples and remember olfactory cues to which they were exposed neonatally and that these differences may affect their orientation behavi ...198417783530
organochlorine contaminants in sea turtles: correlations between whole blood and fat.monitoring toxic organochlorine (oc) compounds is an important aspect in wildlife studies, especially in protected species such as sea turtles. the goal of this study was to determine whether blood oc concentrations can predict those in adipose tissue of sea turtles. blood offers many benefits for monitoring ocs. it can be collected nondestructively from live turtles and can be sampled repeatedly for continuous monitoring. organochlorine concentrations in blood may better represent the exposure ...200415285367
the effects of feeding on hematological and plasma biochemical profiles in green (chelonia mydas) and kemp's ridley (lepidochelys kempii) sea turtles.in mammals, lipemic blood from sampling too soon after an animal feeds can have substantial effects on biochemical values. plasma biochemical values in reptiles may be affected by species, age, season, and nutritional state. however, fasting status is not routinely considered when sampling reptile blood. in this paper, we evaluated 2-hour postprandial blood collection in two sea turtle species to investigate the effects of feeding on hematological and plasma biochemical values. feeding had no si ...201121776356
organohalogen contaminants in blood of kemp's ridley (lepidochelys kempii) and green sea turtles (chelonia mydas) from the gulf of mexico.the threat that exposure to organohalogen (oh) contaminants poses to endangered populations of kemp's ridley (lepidochelys kempii) and green sea turtles (chelonia mydas) is not well understood, partly because few oh data are available. blood samples from live juvenile and sub-adult l. kempii (n = 46) and c. mydas (n = 9) from the gulf of mexico and from l. kempii from the southeastern us coast (n = 3) were extracted using microwave-assisted extraction, and analyzed by large volume injection gas ...201020004460
single-dose pharmacokinetics of ceftazidime and fluconazole during concurrent clinical use in cold-stunned kemp's ridley turtles (lepidochelys kempii).single-dose pharmacokinetics of intramuscularly administered ceftazidime (22 mg/kg) and subcutaneously administered fluconazole (21 mg/kg) were investigated during concurrent clinical use in naturally cold-stunned kemp's ridley turtles (lepidochelys kempii). maximum mean concentration for ceftazidime was 61.31 μg/ml, and time of maximum concentration was 1.56 h postinjection. maximum mean concentration for fluconazole was 26.16 μg/ml, and time of maximum concentration was 0.79 h postinjection. r ...201221470246
pathologic and parasitologic findings of cold-stunned kemp's ridley sea turtles (lepidochelys kempii) stranded on cape cod, massachusetts, 2001-2006.necropsy reports for 28 stranded, cold-stunned kemp's ridley sea turtles (lepidochelys kempii) that died between 2001 and 2006 were reviewed retrospectively. gross and microscopic lesions were compiled to describe the pathologic and parasitologic findings in turtles that were found freshly dead on the beach or that died within 48 hr of stranding. anatomic lesions of varying severity were identified in each of the examined turtles and were identified in tissues of the alimentary, respiratory, int ...200919617470
scintigraphic and radiographic evaluation of appendicular skeletal lesions in cold-stunned kemp's ridley sea turtles.osteolytic appendicular skeletal lesions in eight-stranded, cold-stunned kemp's ridley sea turtles (lepidochelys kempii) were evaluated using radiography and skeletal scintigraphy. radiographic studies were performed monthly in most animals. follow-up scintigraphy was performed 45-120 days after the initial exams in six turtles. radiographically, lesions slowly progressed from an early osteolytic process contained to either the proximal or distal end of long bones, to a later stage characterized ...201618720774
lipids and proteins in the rathke's gland secretions of the north american mud turtle (kinosternon subrubrum).lipids and proteins in the rathke's gland secretions of the north american mud turtle (kinosternon subrubrum, kinosternidae) were analyzed by gas chromatography-mass spectrometry (gc-ms) and sds-polyacrylamide gel electrophoresis (sds-page), respectively. analysis by gc-ms indicates 2,3-dihydroxypropanal and c3-c24 free or esterified fatty acids. analysis by sds-page indicates a major protein component with an approximate molecular mass of 60 kda and minor components ranging from ca. 23 to 34 kd ...20067553355
steady-state plasma concentrations of itraconazole after oral administration in kemp's ridley sea turtles, lepidochelys kempi.pharmacokinetic studies of antifungal agents in reptiles are uncommon. itraconazole, which has been used prophylactically in juvenile sea turtles suffering from hypothermia (cold stunning) on a regular basis, was evaluated for steady-state plasma concentrations. five kemp's ridley sea turtles (lepidochelys kempi) receiving itraconazole at several dosages in a rehabilitation program had blood collected within 24 hr to estimate dosing frequency. subsequently, serial blood samples of kemp's ridley ...200312885135
brevetoxin exposure in sea turtles in south texas (usa) during karenia brevis red tide.five green (chelonia mydas) and 11 kemp's ridley (lepidochelys kempii) sea turtles found dead, or that died soon after stranding, on the southern texas (usa) coast during 2 karenia brevis blooms (october 2015, september-october 2016) were tested for exposure to brevetoxins (pbtx). tissues (liver, kidney) and digesta (stomach and intestinal contents) were analyzed by elisa. three green turtles found alive during the 2015 event and 2 kemp's ridley turtles found alive during the 2016 event exhibite ...201829384484
humoral immune responses to select marine bacteria in loggerhead, caretta caretta, and kemp's ridley, lepidochelys kempii, sea turtles from the south eastern united states.serum from kemp's ridley and loggerhead sea turtles was collected in summers of 2011, 2012, and 2013. serum igy recognition of lysate proteins from nine bacteria species and whole bacteria-specific igy titers to these pathogens were quantified. serum and purified igy recognized proteins of all bacteria, with protein recognition in some species more pronounced than others. circulating igy titers against v. vulnificus, v. anguillarum, e. rhusiopathiae, and b. vesicularis changed over the years in ...201729023227
potential effects of brevetoxins and toxic elements on various health variables in kemp's ridley (lepidochelys kempii) and green (chelonia mydas) sea turtles after a red tide bloom event.natural biotoxins and anthropogenic toxicants pose a significant risk to sea turtle health. documented effects of contaminants include potential disease progression and adverse impacts on development, immune function, and survival in these imperiled species. the shallow seagrass habitats of florida's northwest coast (big bend) serve as an important developmental habitat for kemp's ridley (lepidochelys kempii) and green (chelonia mydas) sea turtles; however, few studies have been conducted in thi ...201728693110
variability in age and size at maturation, reproductive longevity, and long-term growth dynamics for kemp's ridley sea turtles in the gulf of mexico.effective management of protected sea turtle populations requires knowledge not only of mean values for demographic and life-history parameters, but also temporal and spatial trends, variability, and underlying causes. for endangered kemp's ridley sea turtles (lepidochelys kempii), the need for baseline information of this type has been emphasized during attempts to understand causes underlying the recent truncation in the recovery trajectory for nesting females. to provide insight into variabil ...201728333937
a bayesian model for assessing the frequency of multiple mating in nature.many breeding systems have multiple mating, in which males or females mate with multiple partners. with the advent of molecular markers, it is now possible to detect multiple mating in nature. however, no model yet exists to effectively assess the frequency of multiple mating (f(mm))--the proportion of broods with at least two males (or females) genetically contributing--from limited genetic data. we present a single-sex model based on bayes' rule that incorporates the numbers of loci, alleles, ...200612642640
inter-nesting movements and habitat-use of adult female kemp's ridley turtles in the gulf of mexico.species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. identification and quantification of these breeding habitats are essential to effective conservation. satellite telemetry and switching state-space modeling (ssm) were used to define inter-nesting habitat of endangered kemp's ridley turtles (lepidochelys kempii) in the gulf of mexico. turtles were outfitted with satellite transmitte ...201728319178
corticosterone and thyroxine in cold-stunned kemp's ridley sea turtles (lepidochelys kempii).kemp's ridley sea turtles (lepidochelys kempii), a critically endangered species, frequently strand on the shores of cape cod (massachusetts, usa) in late autumn in a state of "cold-stunning" exhibiting low body temperature and related clinical issues. stranded turtles are transported to the new england aquarium (boston, massachusetts, usa) for treatment and rehabilitation. this study tested the hypothesis that cold-stunned sea turtles might exhibit high corticosterone ("stress hormone") or low ...201223082511
stress responses and sexing of wild kemp's ridley sea turtles (lepidochelys kempii) in the northeastern gulf of mexico.plasma corticosterone, glucose, and testosterone concentrations were measured in wild, immature specimens of the highly endangered kemp's ridley sea turtle (lepidochelys kempii) to determine effects of acute handling stress. thirty-nine free-ranging turtles were captured by entanglement net near the cedar keys, florida. blood samples were collected immediately after retrieval from the net, and at 30 min (n = 15) and at 60 min (n = 29) thereafter. mean plasma corticosterone and glucose concentrat ...200111703072
effects of acute fresh water exposure on water flux rates and osmotic responses in kemp's ridley sea turtles (lepidochelys kempi).water flux rates and osmotic responses of kemp's ridley sea turtles (lepidochelys kempi) acutely exposed to fresh water were quantified. salt-water adapted turtles were exposed to fresh water for 4 d before being returned to salt water. during the initial salt water phase, absolute and relative water flux rates were 1.2+/-0.1 l d(-1) and 123.0+/-6.8 ml kg(-1) d(-1), respectively. when turtles were exposed to fresh water, rates increased by approximately 30%. upon return to salt water, rates decr ...200010996820
seasonal reproductive cycle of the kemp's ridley sea turtle (lepidochelys kempi).the seasonal reproductive cycle of the kemp's ridley sea turtle (lepidochelys kempi) was studied under seminatural conditions at the cayman turtle farm, grand cayman, british west indies, from june 1987 to july 1988. male l. kempi displayed a prenuptial rise in serum testosterone 4 to 5 months prior to the mating period (march). male testosterone then declined sharply during the mating period. female l. kempi also displayed a prenuptial rise in serum testosterone, estradiol, and total calcium 4 ...19989473367
estrogen induction of plasma vitellogenin in the kemp's ridley sea turtle (lepidochelys kempi).estrogen stimulation of the production of teh yolk protein precursor vitellogenin was demonstrated in immature kemp's ridley sea turtles. 17beta-estradiol injection elicited an increase in serum estrogen, protein, protein phosphorus, and total calcium within 7 days. associated with these changes was the appearance of a single, dimethylformamide-precipitable, 205-kda estradiol-induced serum protein, which became the predominant serum protein identified by polyacrylamide gel electrophoresis. the e ...19979245536
metabolic and respiratory derangements associated with death in cold-stunned kemp's ridley turtles (lepidochelys kempii): 32 cases (2005-2009).to assess selected clinicopathologic variables at hospital admission (day 1) for cold-stunned kemp's ridley turtles (lepidochelys kempii) that died during the first 3 days after admission (nonsurvivors) and turtles that survived (survivors) and to determine the percentage change of each variable from day 1 to day of death (nonsurvivors) or to day 2 or 3 of hospitalization (survivors).201222256849
is the geographic distribution of nesting in the kemp's ridley turtle shaped by the migratory needs of offspring?across the geographic area that a species uses for reproduction, the density of breeding individuals is typically highest in locations where ecological factors promote reproductive success. for migratory animals, fitness depends, in part, on producing offspring that migrate successfully to habitats suitable for the next life-history stage. thus, natural selection might favor reproduction in locations with conditions that facilitate the migration of offspring. to investigate this concept, we stud ...201021558205
anesthetic and postanesthetic management of sea turtles.to examine the physiologic effects of inhalation anesthesia in aquatic turtles to improve anesthetic techniques and postanesthetic monitoring.19968617631
development and evaluation of three mortality prediction indices for cold-stunned kemp's ridley sea turtles (lepidochelys kempii).kemp's ridley sea turtle is an endangered species found in the gulf of mexico and along the east coast of the usa. cold-stunned kemp's ridley turtles are often found stranded on beaches of massachusetts and new york in november and december each year. when found alive, turtles are transported to rehabilitation centres for evaluation and treatment. blood gas and chemistry analytes of major clinical relevance in sea turtles were selected to develop mortality prediction indices (mpi)s. testing the ...201327293587
evolutionary distinctiveness of the endangered kemp's ridley sea turtle.the endangered kemp's ridley sea turtle (lepidochelys kempi) nests almost exclusively at a single locality in the western gulf of mexico, whereas the olive ridley (l. olivacea) nests globally in warm oceans. morphological similarities between kempi and olivacea, and a geographical distribution that "...makes no sense at all under modern conditions of climate and geography", raise questions about the degree of evolutionary divergence between these taxa. analysis of mitochondrial (mt) dna restrict ...19911876185
forecasting range expansion into ecological traps: climate-mediated shifts in sea turtle nesting beaches and human development.some species are adapting to changing environments by expanding their geographic ranges. understanding whether range shifts will be accompanied by increased exposure to other threats is crucial to predicting when and where new populations could successfully establish. if species overlap to a greater extent with human development under climate change, this could form ecological traps which are attractive to dispersing individuals, but the use of which substantially reduces fitness. until recently ...201323744698
global phylogeography of the ridley sea turtles (lepidochelys spp.) as inferred from mitochondrial dna sequences.the kemp's ridley sea turtle (lepidochelys kempi) is restricted to the warm temperate zone of the north atlantic ocean, whereas the olive ridley turtle (l. olivacea) is globally distributed in warm-temperate and tropical seas, including nesting colonies in the north atlantic that nearly overlap the range of l. kempi. to explain this lopsided distribution, pritchard (1969) proposed a scenario in which an ancestral taxon was divided into atlantic and pacific forms (l. kempi and l. olivacea, respec ...20069692227
31p-nmr determinations of cytosolic phosphodiesters in turtle hearts.as part of our ongoing research on cardiac hypoxia tolerance we have conducted 31p nuclear magnetic resonance (nmr) studies of isolated, perfused, working hearts from freshwater turtles, animals that are well known for their ability to tolerate prolonged periods of anoxia. a striking feature of turtle heart spectra is an extremely high concentration of nmr visible phosphodiesters (pdes). cardiac spectra from mammals, on the other hand, typically exhibit only a small resonance in the pde region. ...19979505428
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