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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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| SILVA,SERGIO I.; JAKSIC,FABIÁN M.; BOZINOVIC,FRANCISCO. |
| We tested the role of dietary shifts (from rodents to fruits and to mixed diets) on the nutritional ecology of the culpeo fox Pseudalopex culpaeus, a native canid of South America. We studied the effects of food quality on digestive processes, nutrition, and mass balance, and the implications of diet quality for fox survival. We observed at the end of the nutritional trials that body mass differed significantly between the three diet groups (fruits, rats and mixed diets), while percentage of body mass change differed significantly only in the fruit diet treatment. Foxes fed with fruits consumed more food to meet their dietary and metabolic needs. Across diets, dry-matter as well as energy digestibility increased significantly with diet quality. Also, mean... |
| Tipo: Journal article |
Palavras-chave: Nutritional bottleneck; Fox; Dietary shift; Fruit consumption. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000200007 |
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| PASSOS,PAULO; SCANFERLA,AGUSTÍN; MELO-SAMPAIO,PAULO R.; BRITO,JORGE; ALMENDARIZ,ANA. |
| ABSTRACT Body-size is significantly correlated with the number of vertebrae (pleomerism) in multiple vertebrate lineages, indicating that somitogenesis process is an important factor dictating evolutionary change associated to phyletic allometry and, consequently, species fitness and diversification. However, the role of the evolution of extreme body sizes (dwarfism and gigantism) remains elusive in snakes, mainly with respect to postnatal ontogeny in dietary preferences associated with evolution of gigantism in many lineages. We described herein a new species in the highly diversified and species-rich genus Atractus on the basis of four specimens from the southeastern slopes of the Ecuadorian Andes. The new species is morphologically similar and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atractus gigas; Atractus touzeti; Dietary shift; Goo-eater snakes; Macrostomy; Postnatal ontogeny. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000200702 |
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