Ontogenetic dietary shifts of largemouth bass do not increase trophic position in a shallow eutrophic lake in Japan

Natsuru Yasuno, Yasufumi Fujimoto, Tetsuo Shimada, Shuichi Shikano and Eisuke Kikuchi

Trophic positions of largemouth bass Micropterus salmoides in Lake Izunuma, Japan, did not increase with the dietary shift from zooplanktivory to piscivory, and actually decreased when larger fish shifted towards feeding on red swamp crayfish. Consequently, largemouth bass ≥300 mm TL occupied lower trohic positions than smaller individuals.

Ann. Limnol. - Int. J. Lim., 52 (2016) 355-364
DOI: 10.1051/limn/2016025

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