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Silva,Laura A; Siles,Laura; Cardona,Luis; Tavares,Mauricio; Crespo,Enrique; Gandini,Patricia. |
Se realizó un análisis de isótopos estables en uñas para evaluar la composición de la dieta y el uso estacional de los recursos tróficos en individuos juveniles de Pingüino Patagónico (Spheniscus magellanicus) provenientes de las costas de Brasil. El análisis se llevó a cabo sobre las porciones basal y distal de las uñas, correspondientes a la temporada invernal y a la reproductiva, respectivamente, en función del tiempo de integración de la señal isotópica determinado por la tasa de crecimiento de la uña y la fecha de colecta. Se observaron diferencias significativas en las señales isotópicas de las dietas correspondientes a las temporadas reproductiva e invernal, sugiriendo diferencias en las contribuciones relativas de las presas. Durante la temporada... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dieta invernal; Isótopos; Juveniles; SIAR; SIBER; Spheniscus magellanicus; Uñas. |
Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072015000200001 |
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Rodrigues,Sandra Carvalho; Adornes,Andréa Corrado; Santos Filho,Euclydes Antônio dos; Silva Filho,Rodolfo Pinho; Colares,Elton Pinto. |
The aim of this work was to monitor and study the hematocrit and weight of juvenile penguins, with and without oil cover, found alive along the southern coast of Brazil, after capture, as well as before eventual death or release. Released juvenile penguins showed higher weight and hematocrit (3.65 ± 0.06 kg and 44.63 ± 0.29%, respectively) than those that died (2.88 ± 0.08 kg and 34.42 ± 1.70%, respectively). Penguins with higher hematocrit and weight after capture had higher mean weight gain than their counterparts with smaller hematocrit and weight after the capture. Besides, juveniles with higher hematocrit and weight after the capture had higher survival rates, independent of the presence or absence of oil. The results suggested that juveniles covered... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Disease; Survival; Oil; Hematocrit; Body weight; Spheniscus magellanicus. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200021 |
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