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Food of the Threadfin Shad, Dorosoma petenense, in Lake Chicot, Arkansas
Author(s) -
Miller Robert Victor
Publication year - 1967
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1967)96[243:fottsd]2.0.co;2
Subject(s) - dorosoma , gizzard shad , biology , invertebrate , chlorophyta , fishery , plankton , fish <actinopterygii> , algae , ecology
Forty‐nine threadfin shad (36–119 mm SL) were collected in Lake Chicot, Arkansas, from 27 February to 7 November 1959. They appeared to feed on any available organism of suitable size. Organisms eaten represented more than 60 genera. Animal and plant foods were present in approximately equal amounts; protozoans and invertebrate eggs composed most of the animal food, and green algae (Chlorophyta) most of the plant food. Individual threadfin shad within a sample ate the same kinds of organisms in similar proportions. Correlations between ingested organisms and those in the plankton were significant, indicating a lack of food selectivity. There was no apparent difference in the food of fish of different sizes.