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portada Trophic biology of the ichthyofauna of the Peixe - Boi river basin
Type
Physical Book
Author
Publisher
Language
English
Pages
64
Format
Paperback
Dimensions
22.9 x 15.2 x 0.4 cm
Weight
0.10 kg.
ISBN13
9786206573586
Categories

Trophic biology of the ichthyofauna of the Peixe - Boi river basin

Ana Caroline de Souza Campos (Author) · Juliana T. B. Da Silva (Author) · Breno Barros (Author) · Our Knowledge Publishing · Paperback

Trophic biology of the ichthyofauna of the Peixe - Boi river basin - de Souza Campos, Ana Caroline ; B. Da Silva, Juliana T. ; Barros, Breno

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Synopsis "Trophic biology of the ichthyofauna of the Peixe - Boi river basin"

The diet of fish is of paramount importance in the regulatory processes of aquatic ecosystems, as it does not denote the availability of food distributed in the habitat as much as the choices made by individuals. This study was carried out in two streams located in the Peixe - Boi river basin / PA, at different stages of anthropization, with the aim of comparing the diet of the ichthyofauna, as well as classifying the species analyzed according to their feeding habits into carnivores, herbivores and omnivores, identifying the origin of the items that these animals feed on, whether they are allochthonous or autochthonous and characterizing how these observations can be made in relation to the fish species present in the streams. The absolute importance of food items can be inferred according to the degree of integrity of the bodies of water. A total of 58 individuals had their stomach contents analyzed, where each item was weighed and identified to the smallest possible taxon, making it possible to calculate their Frequency of Occurrence (Fi), the Volumetric Analysis Index (Vi) and the Absolute Importance Index (AIi).

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