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| Artero, C.; Murie, D. J.; Koenig, C. C.; Berzins, R.; Bouchon, C.; Lampert, Luis. |
| The age and growth of the Critically Endangered Atlantic goliath grouper Epinephelus itajara of equatorial French Guiana was determined by a non-lethal aging method using dorsal fin rays. Goliath grouper deposit 1 complete annulus per year, with the translucent zone of the annulus laid down at the beginning of the dry season (July). Two readers independently applied the method; there was full agreement between the two for 52% of the fish, and agreement of +/- 1 yr for 82%. Comparison of ages derived from paired samples of otoliths and fin rays were identical (n = 6). The mean age of goliath grouper was 4.2 yr (range = 1 to 17 yr; n = 229); 82% of the individuals were under the size/age of sexual maturity. Goliath grouper in French Guiana are larger at a... |
| Tipo: Text |
Palavras-chave: Epinephelidae; Critically Endangered species; Sclerochronology; Fin rays; MPA. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00292/40320/38759.pdf |
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| Artero, C.; Koenig, C. C.; Richard, P.; Berzins, R.; Guillou, G.; Bouchon, C.; Lampert, Luis. |
| The ecology, particularly the trophic ecology, of the Critically Endangered goliath grouper Epinephelus itajara (Lichtenstein 1822) in French Guiana (France) is relatively unknown. Such information would provide a better understanding of the role that goliath groupers play in the marine ecosystem of French Guiana. This study focused on the feeding ecology of the goliath grouper through stomach-content and stable-isotope analyses of captured specimens. The dietary composition of goliath groupers in French Guiana was similar to that of goliath groupers from other areas of the species' range. However, in French Guiana, goliath groupers exhibited an ontogenetic shift in diet that has not been demonstrated elsewhere. Crustaceans, primarily crabs, were dominant... |
| Tipo: Text |
Palavras-chave: Epinephelidae; Critically Endangered species; Stomach contents; Carbon and nitrogen stable isotopes; Dietary shift; Migration; Mangroves · Diet. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00270/38151/36276.pdf |
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