An ordination technique for fish diet comparisons

Brazilian Archives of Biology and Technology

Tadeusz Penczak²  Angelo A. Agostinho¹  Norma S. Hahn¹ 

[1] ,University of Lódz Department of Ecology and Vertebrate Zoology Lódz,Poland

关键词: Paraná River;    floodplain;    fish;    feeding;    similarity definition;    synthetic table;   

DOI  :  10.1590/S1516-89132000000100013

来源: SciELO

【 摘 要 】

The frequency of nine food types in the guts of 58 fish species from the Paraná River and its floodplain was compared using similarity definition. A synthetic table ordered on the basis of this definition, with fish species on axis y, and food types on axis x, enabled easy reading numerous kinds of information on feeding ecology of fish in the catchment. For example: 1) which fish species were generalists, specialists or opportunists, 2) those classified as herbivorous species consumed small amounts of animal food, 3) that fish consumed any food type that contained transformed solar energy and matter, 4) what are food preferences dependent on fish taxonomic affinity. The possibility of employing synthetic tables for investigating spatial and temporal variation in fish diet has also been indicated.

【 授权许可】

CC BY-NC   
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