| persistent organochlorine pollutants in eggs of colonial waterbirds from galveston bay and east texas, usa. | eggs of neotropic cormorants (phalacrocorax brasilianus), black-crowned night herons (nycticorax nycticorax), and great egrets (ardea alba) nesting on several locations in galveston bay (tx, usa) and at two control sites outside the bay were collected during april-may 1996 and analyzed for chlorinated pesticides, pcbs, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans. additionally, concentrations of 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (tcdd-eqs) were determined by ... | 2001 | 11349863 |
| waterbirds (other than laridae) nesting in the middle section of laguna cuyutlán, colima, méxico. | laguna de cuyutlán, in the state of colima, mexico, is the only large coastal wetland in a span of roughly 1150 km. despite this, the study of its birds has been largely neglected. between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of laguna cuyutlán, a large tropical coastal lagoon, through field visits. we documented the nesting of 15 species of non-laridae waterbirds: neotropic cormorant (phalacrocorax brasilianus), tricolored egret (egretta tricolor), snowy egret ... | 2008 | 18624252 |
| parasite communities of the neotropical cormorant phalacrocorax brasilianus (gmelin) (aves, phalacrocoracidae) from two coastal lagoons in guerrero state, mexico. | the parasite community structure of the neotropical cormorant, phalacrocorax brasilianus, from two lagoons (coyuca and tres palos) from guerrero state, méxico, was examined. fourteen species of adult helminths (6,391 individuals) from 48 cormorants were identified: 9 digeneans, 1 acanthocephalan, 1 cestode, and 3 nematodes. a total of 11 species were collected in coyuca lagoon and 12 in tres palos lagoon. nine species co-occurred in cormorants of both lagoons but, with the exception of contracae ... | 2011 | 21503640 |
| organochlorine pesticide contamination in three bird species of the embalse la florida water reservoir in the semiarid midwest of argentina. | organochlorine pesticides (ocs) have a variety of acute and chronic pathological effects on animals, are persistent in the environment and are accumulated in adipose tissue of animals. in argentina there are few studies reporting the oc contamination in the fauna. moreover, no data are available for an ecologically relevant region, the arid-semiarid midwest region of argentina. recently, it was reported oc contamination in the water of an important artificial water reservoir of this area, the em ... | 2007 | 17688913 |
| nematode parasites of the digestive tract in neotropic cormorant chicks (phalacrocorax brasilianus) from the river cruces ramsar site in southern chile. | the neotropic cormorant (phalacrocorax brasilianus) breeding colony of the rio cruces nature sanctuary and ramsar site was surveyed for nematode parasites in southern chile. moribund chicks (n=128) of different ages were inspected for anchored nematodes using complete guts. we tested if chicks harbored the same parasites as the adults feeding them. besides the known contracaecum rudolphii, third or fourth stage larvae of pseudoterranova sp. and anisakis (type i and ii) were obtained in this wate ... | 2005 | 15986255 |
| seabird eggs as bioindicators of chemical contamination in chile. | seabird eggs were used as bioindicators of chemical contamination in chile. brown-hooded gull (larus maculipennis), kelp gull (larus dominicanus), trudeau's tern (sterna trudeaui), neotropic cormorant (phalacrocorax brasilianus), and pink-footed shearwater (puffinus creatopus) eggs were sampled at different breeding sites during the 1990s. mercury and organochlorines (pcbs, ddt, hcb, hch, and pcp) were quantified to reveal the interspecific differences, spatial and temporal trends in contaminati ... | 2003 | 12860109 |
| the life cycle of clinostomum complanatum rudolphi, 1814 (digenea, clinostomidae) on the floodplain of the high paraná river, brazil. | the life cycle of the digenetic trematode clinostomum complanatum was studied on the floodplain of the high paraná river, brazil. sampling was done between june 1999 and june 2000. the mollusc biomphalaria peregrina was the first intermediate host with a prevalence of infection of 0.75%. the fish loricariichthys platymetopon, hoplosternum littorale, parauchenipterus galeatus, hoplias malabaricus and loricaria sp. were second intermediate hosts, with the prevalence varying from 2.45% ( h. malabar ... | 2003 | 12658465 |
| porphyrin levels in excreta of sea birds of the chilean coasts as nondestructive biomarker of exposure to environmental pollutants. | in this preliminary study on sea birds we propose the use of porphyrins in excreta as a biomarker of exposure to contaminants. samples of excreta were obtained from colonies of brown pelicans (pelecanus occidentalis thagus), neotropic cormorants (phalacrocorax olivaceus), and kelp gulls (larus dominicanus) in three areas of the south coast of chile with different human impact (tubul, talcahuano, and valdivia). they were analyzed for porphyrin content (copro-, uro-, and protoporphyrins and total ... | 2001 | 11385591 |
| records of the bird capillariid nematode ornithocapillaria appendiculata (freitas, 1933) n. comb. from freshwater fishes in mexico, with remarks on capillaria patzcuarensis osorio-sarabia et al., 1986. | re-examination of capillariid specimens collected from the freshwater fish chirostoma estor jordan from lake pátzcuaro in 1985-1986 and deposited as paratypes of capillaria patzcuarensis osorio-sarabia, pérez-ponce de león & salgado-maldonado, 1986 showed that their morphology was in contradiction with the description of this species and, in fact, they could be identified as the species originally described as c. appendiculata freitas, 1933 from cormorants phalacrocorax brasilianus (gm.) in braz ... | 2000 | 10682923 |
| complete mitochondrial genome of the neotropic cormorant (phalacrocorax brasilianus). | the complete sequence of the neotropic cormorant (phalacrocorax brasilianus) mitochondrial dna was obtained by the shotgun sequencing approach. the mitogenome is 19 042 bp in length and includes 13 protein-coding genes, 2 ribosomal subunit genes, 22 transfer rna genes, a control region and a duplicated region of 2418 bp. the base composition is 32.1% for c, 31.8% for a, 22.6% for t and 13.4% for g, with an overall gc content of 45.5%. this is the first mitogenome of the p. brasilianus described ... | 2017 | 26713786 |
| redescription of austrodiplostomum compactum (trematoda: diplostomidae) from its type host and locality in venezuela, and of a. mordax from argentina. | austrodiplostomum compactum from nannopterum brasilianus, and its metacercaria from geophagus sp. and oreochromis mossambicus captured (1979) at its type locality valencia lake, venezuela, by the author, is redescribed. the adult is characterized by its large body size, and an oral sucker smaller than the pharynx. the metacercaria has a similar body size as the adult, and the small genital primordia occupy 4.1-7.3% of body length. experimental infections in chickens with metacercariae of diplost ... | 2017 | 28604263 |
| molecular and morphological characterization of austrodiplostomum ostrowskiae dronen, 2009 (digenea: diplostomatidae), a parasite of cormorants in the americas. | the diplostomid genus austrodiplostomum currently contains two species, i.e. a. mordax and a. ostrowskiae. adults of these species inhabit the intestine of cormorants of the genus nannopterum, whereas larval forms (metacercariae) are found in the eyes (vitreous humor) of freshwater fishes. records of both species have been established across a wide geographic range in the americas. diplostomid adults and metacercariae were collected from a wide geographical range that spans from south-eastern me ... | 2016 | 25735970 |
| genetic and morphological evidences for the existence of a new species of contracaecum (nematoda: anisakidae) parasite of phalacrocorax brasilianus (gmelin) from chile and its genetic relationships with congeners from fish-eating birds. | abstract contracaecum australe n. sp. is described from the neotropic cormorant phalacrocorax brasilianus in chile based on morphology and the sequence analyses of multiple loci, i.e., mitochondrial cytochrome oxidase 2, mtdna cox-2 , the small subunit of the mitochondrial ribosomal rna gene, rrns , and the its-1 and its-2 regions of nuclear ribosomal dna. moreover, sequence analysis of the same genes was carried out on the morphospecies contracaecum chubutensis garbin et al. (2008) from phalacr ... | 2011 | 21506861 |
| helminth parasitism in the neotropical cormorant, phalacrocorax brasilianus, in southern brazil: effect of host size, weight, sex, and maturity state. | forty-seven specimens of neotropical cormorants, phalacrocorax brasilianus, from lago guaíba, guaíba, state of rio grande do sul, brazil (30° 00' s, 51°15' w), were examined for helminth parasites between 1999 and 2003. twenty species of helminth parasites were found: ten digeneans: austrodiplostomum mordax, austrodiplostomum compactum, clinostomum sp., drepanocephalus olivaceus, drepanocephalus spathans, hysteromorpha triloba, ignavia olivacei, paryphostomum segregatum, prosthogonimus ovatus, a ... | 2011 | 21431903 |
| feeding associations between guiana dolphins, sotalia guianensis (van bénèden, 1864) and seabirds in the lagamar estuary, brazil. | the main objective of the present study was to describe the characteristics regarding interactions between guiana dolphins, sotalia guianensis and seabirds in feeding associations in two distinct areas of the lagamar estuary, brazil. boat-based surveys directed towards photo-identification studies of s. guianensis were conducted in the cananéia estuary (ce) (25 degrees 01' s and 47 degrees 55' w) from july 2004 to march 2008, as well as in the paranaguá estuarine complex (pec) (25 degrees 24' s ... | 2010 | 20231955 |
| contamination of heavy metals in birds from embalse la florida (san luis, argentina). | embalse la florida is an artificial lake located in midwestern argentina's san luis province. it provides drinking water to approximately 70% of the province's human population and approximately 20% of the province is irrigated with water from the reservoir. the presence of heavy metals in embalse la florida's water has previously been reported. nevertheless, no information about the levels of these contaminants in birds is available for this region. the aim of this study, therefore, is to (1) e ... | 2009 | 19890561 |
| the phylogenetic position of the galápagos cormorant. | the endangered galápagos cormorant, phalacrocorax harrisi, is unique among the species of the phalacrocoracidae in being flightless and sequentially polyandrous. it has had a vexed taxonomic history, variously being lumped with all the species in phalacrocorax, being accorded its own genus, nannopterum, or being included in leucocarbo or compsohalieus. different authorities have similarly suggested a number of different species as being its closest relative. here we use novel mitochondrial dna s ... | 2009 | 19523526 |
| coastal waterbirds of el chorro and majahuas, jalisco, méxico, during the non-breeding season, 1995-1996. | we studied how waterbirds used two small estuaries during the non-breeding season of 1995-1996. these estuaries, el chorro and majahuas, were located in the middle of a large span of non-wetland habitat along the pacific coast of méxico. whereas el chorro was basically a large and open waterbody, majahuas was a long and narrow corridor flanked by mangroves. the two estuaries had 77 species throughout our study, but shared only 58, due to differences in their habitat. seabirds comprised 66% of al ... | 2001 | 11795166 |
| a new species of contracaecum (nematoda: anisakidae) found parasitizing nannopterum brasilianus (suliformes: phalacrocoracidae) and hoplias argentinensis (characiformes: erythrinidae) in south america: morphological and molecular characterization of larval and adult stages. | nematode species of the genus contracaecum railliet & henry, 1912 have been reported around the world in many species of fish-eating birds and seals. here, contracaecum jorgei n. sp. is morphologically described using light and scanning electron microscopy for adults and fourth-stage larvae (l4) found in the bird nannopterum brasilianus and third-stage larvae (l3) found in the freshwater fish hoplias argentinensis, both from the province of córdoba, argentina. additionally, sequences of cytochro ... | 2020 | 32847645 |
| aspergillosis in free-ranging aquatic birds. | due to the difficulty in the access to free-ranging birds, data regarding aspergillus infections in wild avian species is rare compared to captive wild and domestic birds. | 2020 | 32405453 |
| parasites of the neotropic cormorant nannopterum (phalacrocorax) brasilianus (aves, phalacrocoracidae) in chile. | the neotropic cormorant nannopterum (phalacrocorax) brasilianus (suliformes: phalacrocoracidae) is widely distributed in central and south america. in chile, information about parasites for this species is limited to helminths and nematodes, and little is known about other parasite groups. this study documents the parasitic fauna present in 80 neotropic cormorants' carcasses collected from 2001 to 2008 in antofagasta, biobío, and ñuble regions. birds were externally inspected for ectoparasites a ... | 2020 | 33027422 |
| persistent organic pollutants in livers and hg in feathers of neotropic cormorants (phalacrocorax brasilianus) from the trinity river watershed (texas, usa). | the trinity river (texas, usa) has been historically known as a polluted river because of its proximity to the dallas-fort worth area and because of known discharges of sewage and agricultural irrigation waters to the river. surprisingly, there are no studies regarding the presence of legacy contaminants in the river and their impacts to wildlife. the objectives of this study were to determine accumulation and potential impacts of persistent organic pollutants, such as organochlorine pesticides ... | 2019 | 30623198 |
| low occurrence of hemosporidian parasites in the neotropic cormorant (phalacrocorax brasilianus) in chile. | hemosporidian parasites rarely infect aquatic birds. few studies have been conducted in south america identifying some lineages of the genera plasmodium, leucocytozoon, and haemoproteus, but none has been done in the neotropic cormorant (phalacrocorax brasilianus). this species is widely distributed through the american continent, from southern usa to tierra del fuego, using a wide range of aquatic habitats. we molecularly studied the occurrence and diversity of hemosporidian lineages infecting ... | 2019 | 30448937 |
| molecular identification of avian viruses in neotropic cormorants ( phalacrocorax brasilianus) in chile. | we identified two rna (paramyxovirus and coronavirus) and two dna (adenovirus and herpesvirus) viruses in a common aquatic bird, the neotropic cormorant ( phalacrocorax brasilianus), and determined their phylogenetic relationships to other global circulating variants. we analyzed 104 cloacal swabs from individuals collected at locations in central chile. sequences were obtained from amplicons using consensus primers targeting conserved genes of the virus families paramyxoviridae, coronaviridae, ... | 2019 | 30216128 |
| a morphological and molecular study of adults and metacercariae of hysteromorpha triloba (rudolpi, 1819), lutz 1931 (diplostomidae) from the neotropical region. | adults of hysteromorpha triloba (rudolpi, 1819), lutz, 1931 inhabit primarily the intestine of cormorants across the globe, whereas metacercariae have been found in the body cavity of freshwater fishes of the families cyprinidae, ictaluridae, ariidae, pimelodidae and catostomidae. in this study, adults and metacercariae identified as h. triloba were collected from the neotropical cormorant (nannopterum brasilianus) and from the mexican tetra fish (astyanax mexicanus) from the gulf of mexico and ... | 2018 | 29363439 |