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| Calabuig,Cecilia P.; Green,Andy J.; Muriel,Roberto; Katzenberger,Marco; Patino-Martinez,Juan; Moreira,Heden M.. |
| The Coscoroba Swan, Coscoroba coscoroba (Molina, 1782), is a poorly known aberrant Anserine endemic to South America. We captured adult birds (189 male, 157 female) from the largest population in Brazil at the Taim Ecological Reserve, State of Rio Grande do Sul, Brazil. Different patterns between sexes can reflect differences in selection, and positive allometry may indicate that a character is sexually selected. We used body weight and 10 morphological measurements to examine allometric differences between males and females of C. coscoroba. Males were consistently larger than females. Analysis of scaling relationships against body mass showed that nostril, tail, wing and bill height were positively allometric (i.e., heavier birds had relatively larger... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Monomorphic; Natural selection; Waterfowl; Scaling. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000400008 |
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| Cabral,Sofia de O.; Freitas,Itainara da S.; Morlanes,Viviane; Katzenberger,Marco; Calabuig,Cecilia. |
| Abstract: The boa (Boa constrictor) is considered a top predator and its diet includes a wide variety of birds, mammals, and other reptiles, all related directly to their availability in the environment inhabited by the snake. Seven boas were found roadkilled on highways adjacent to conservation units in the semi-arid region of Rio Grande do Norte state, in northeastern Brazil. Their digestive tract was analyzed to identify food items and classify them according to their orientation in the tract. Among the food items found, the white-eared opossum (Didelphis albiventris) and the black-and-white tegu (Salvator merianae) were ingested head-first, while teeth of a punaré (Thrichomys laurentius) and a Spix's yellow-toothed cavy (Galea spixii) and hairs of an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Feeding behavior; Snake; Seed dispersal; Zoochory. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000400203 |
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