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| Wolff,Luciano Lazzarini; Abilhoa,Vinícius; Rios,Flavia Sant'Anna; Donatti,Lucélia. |
| This study described the feeding habits of the characin Astyanax aff. fasciatus. The diet compositions of specimens from two sites (A and B) on a river in Southern Brazil were compared according to the size of individuals and seasonal period. The collections were performed monthly from March 2005 to February 2006, where the stomach contents of 290 specimens were assessed. Food items for A. aff. fasciatus were basically composed of plants and insects, especially leaf fragments, seeds, fruits, filamentous algae, aquatic and terrestrial insects and insect fragments. At site A, the most common items were insect and plant fragments. Conversely at site B, plant fragments were more representative. In general, all items of animal origin showed the highest feeding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resource availability; Feeding flexibility; Omnivore; Niche shifts; Freshwater. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200018 |
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| Rios,Flavia Sant'Anna; Donatti,Lucélia; Fernandes,Marisa Narciso; Kalinin,Ana Lucia; Rantin,Francisco Tadeu. |
| Hoplias malabaricus (traíra) were experimentally starved (0 to 240 days) and subsequently re-fed for 30 days (after 90 and 240-d fasting). Long-term starvation produced minor changes in muscle composition, but shrinkage of muscle fibres was a conspicuous result. The diameter of muscle fibres decreased gradually and the spaces among them increased as the starvation period progressed. After re-feeding, fish prior starved for 90 days presented partial restoration on diameter of muscle fibres. However, the fibres remained shrunken after re-feeding following 240-d fasting. While the lipid content did not change, the protein levels fell after 240-d fasting, but they were restored after re-feeding |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Morphology; Muscle; Proximate composition; Starvation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200025 |
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