| community ecology of the metazoan parasites of white croaker, micropogonias furnieri (osteichthyes: sciaenidae), from the coastal zone of the state of rio de janeiro, brazil. | one hundred specimens of white croakers, micropogonias furnieri (desmarest 1823) (osteichthyes: sciaenidae) collected from pedra de guaratiba (23 degrees 01's, 43 degrees 38'w), state of rio de janeiro, brazil, from september 1997 to august 1999, were necropsied to study their parasites. the majority of the fish (95%) were parasitized by metazoan. twenty-eight species of parasites were collected. the nematodes were the 40.5% of the total number of parasites specimens collected. dichelyne elongat ... | 2001 | 11285488 |
| methylmercury and total mercury in estuarine organisms from rio de janeiro, brazil. | guanabara bay (gb), located in the rio de janeiro state, is still a productive estuary on the south-eastern brazilian coast. it is an ecosystem heavily impacted by organic matter, oil and a number of other toxic compounds, including hg. the present study aimed to comparatively evaluate the aquatic total mercury (thg) and mehg contamination, and the ratios of mehg to thg (% mehg), in 3 species of marine organisms, micropogonias furnieri-carnivorous fish (n = 81), mugil spp.--detritivorous fish (n ... | 2001 | 11605610 |
| distribution of micropogonias furnieri (pisces: sciaenidae) in sepetiba bay, rio de janeiro, brazil. | distribution of micropogonias furnieri in the sepetiba bay, an ecosystem highly important as rearing ground for this species that represents 5.8% of the numerical catches by otter trawling, was analyzed based in monthly and bi-monthly samplings from two programmes (beach seines = continental margin; and otter trawl = inside of the bay), over three annual cycles, between 1993 and 1997. spatial comparisons were assessed by dividing the bay in two zones for the beach seines (inner and outer bay) an ... | 2002 | 12298248 |
| sex ratio and size structure of micropogonias furnieri (desmarest, 1823) (perciformes, sciaenidae) in sepetiba bay, rio de janeiro, brazil. | sex ratio and size structure constitute basic information in assessing reproductive potential and estimating stock size in fish populations. one hundred fifty-one individuals of micropogonias furnieri caught by experimental otter trawls, in three zones (inner, central, and outer) of sepetiba bay between october 1998 and september 1999 were examined. males outnumbered females (1.3:1.0) in all zones but no significant differences were detected. only in the outer zone (5.0:1.0) were male/female rat ... | 2004 | 15029367 |
| metazoan parasites as biological tags for stock discrimination of whitemouth croaker micropogonias furnieri. | examination of 248 adult specimens of whitemouth croaker micropogonias furnieri from five localities along the brazilian coast revealed 8735 parasites belonging to 41 metazoan species. samples from ceará to bahia and rio de janeiro to santa catarina showed a high level of correct assignation (92 and 87%, respectively) and cross assignation (i.e. almost all specimens misidentified in ceará were assigned to bahia and almost all specimens misidentified in bahia were classified as ceará), so samples ... | 2010 | 20666899 |
| a new species of leposphilus hesse, 1866 (copepoda: philichthyidae) parasitic in the interorbital canals of the whitemouth croaker micropogonias furnieri (desmarest) (sciaenidae) off brazil with an amended diagnosis of the genus. | a new species of the monotypic genus leposphilus hesse, 1866 (cyclopoida: philichthyidae), leposphilus vogti n. sp., is described based on adult female and male specimens from the interorbital canals of micropogonias furnieri (desmarest) (sciaenidae) in sepetiba bay, state of rio de janeiro, brazil. the new species differs from its only congener, l. labrei hesse, 1866, by the following combination of characters in the adult female: a globular cephalosome, a two-segmented maxilla, and fourth abdo ... | 2016 | 27221003 |
| relationship between mercury concentrations in the blood with that in the muscle of four estuarine tropical fish species, rio de janeiro state, brazil. | the aim of this work was to assess the relationship between mercury concentrations in the blood with that in muscle for non-invasive mercury contamination assessment in fish. at ribeira bay were collected 198 fishes of 4 species (genidens genidens, arius luniscutis, haemulon steindachneri, micropogonias furnieri). at guanabara bay were collected 84 fishes of 2 species (genidens genidens, micropogonias furnieri). means of mercury concentrations in fish muscles in both areas were below 500 ng/g. t ... | 2011 | 21336858 |
| nematode parasites of commercially important fish from the southeast coast of brazil: morphological and genetic insight. | | 2018 | 29278825 |
| total mercury in carnivorous fish from brazilian southeast. | total mercury concentrations were determined by atomic absorption spectrometry in muscle tissue of two commercially important species of carnivorous fishes croaker (micropogonias furnieri) and cutlassfish (trichiurus lepturus) caught in itaipu estuary, rio de janeiro. in this study, whitemouth croaker presented more mercury than atlantic cutlassfish. bioaccumulation differences can be explained by the biological behavior of juveniles whitemouth croaker, that remain in the estuary up to maturity, ... | 2015 | 25666565 |