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| Cocilio,Rodrigo A. Nieva; Blanco,Graciela M.; Acosta,Juan C.. |
| Abstract This study aimed to investigate the diet of the gecko Homonota fasciata (Duméril & Bibron, 1836) in a population from Monte of San Juan Province, Argentina, and to analyze possible temporal, sexual, and ontogenetic variations in feeding behavior. We determined the total volume, number, and occurrence frequency of each prey item and calculated the relative importance indexes. We also assessed trophic diversity and trophic equity. Homonota fasciata had a generalist and diverse diet based on arthropods, including insects and arachnids. Individuals adopted a passive 'sit and wait' foraging strategy. There were seasonal-, sex-, and age-related variations in the trophic spectra. The results of this study provide a valuable contribution to our... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Foraging ecology; Gecko; Trophic niche; Trophic overlap. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212016000100213 |
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| Cox, Samantha; Authier, Matthieu; Orgeret, Florian; Weimerskirch, Henri; Guinet, Christophe. |
| High juvenile mortality rates are typical of many long‐lived marine vertebrate predators. Insufficient development in dive and forage ability is considered a key driver of this. However, direct links to survival outcome are sparse, particularly in free‐ranging marine animals that may not return to land. In this study, we conduct exploratory investigations toward early mortality in juvenile southern elephant seals Mirounga leonina. Twenty postweaning pups were equipped with (a) a new‐generation satellite relay data tag, capable of remotely transmitting fine‐scale behavioral movements from accelerometers, and (b) a location transmitting only tag (so that mortality events could be distinguished from device failures). Individuals were followed during their... |
| Tipo: Text |
Palavras-chave: Bio-logging; Early life; Foraging ecology; Juvenile mortality; Mirounga leonina; Southern elephant seal; Survival analyses. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00598/71016/69289.pdf |
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