| Autor: |
Rosa Maria Dias, Jean Carlo Gonçalves Ortega, Luiz Carlos Gomes, Angelo Antonio Agostinho |
| Jazyk: |
English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Iheringia: Série Zoologia, Vol 107, Iss 0 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1678-4766 |
| DOI: |
10.1590/1678-4766e2017035 |
| Popis: |
ABSTRACT. The relationships between the degree of dietary overlap and food availability, and implications for food selectivity of fish species were evaluated at floodplain lakes on the upper Paraná River floodplain, Brazil. The hypothesis tested were: i) species become less selective in lakes with high availability of food resources; and ii) species (interspecific) or individual (intraspecific) present higher food overlap in conditions of high availability of food resources. In general, with the results was observed that species become less selective when the environment provided higher availability of food resources. Interspecific overlap did not show a pattern when evaluating availability of food resources in the lakes. However, intraspecific overlap tended to be more accentuated in conditions of high availability of resource food. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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