Open AccessSuppression of cannibalism in the intertidal copepod Tigriopus japonicus (Mori, 1932) and improvements in population density using artificial substrates
Author(s) -
Koga Shinichi,
Takayama Yoshiki,
Toda Tatsuki
Publication year - 2022
Publication title -
aquaculture, fish and fisheries
Language(s) - English
Resource type - Journals
ISSN - 2693-8847
DOI - 10.1002/aff2.31
Subject(s) - copepod , cannibalism , intertidal zone , stocking , biology , population density , population , ecology , fishery , crustacean , larva , demography , sociology
The present study investigated population growth, egg production and cannibalism in the intertidal harpacticoid copepod Tigriopus japonicus (Mori, 1932). Copepods were cultured on artificial substrates with different surface areas, from 13.5 × 10 3 to 10.6 × 10 4 mm 2 , to clarify the effect of surface area in a culture vessel on population density. The cannibalism rate at a surface area of 10.6 × 10 4 mm 2 was significantly lower (by a sixth) than that at 13.5 × 10 3 mm 2 . These results suggest that artificial substrates play a role in preventing cannibalism by providing shelter and can increase the stocking population density of T. japonicus in a vessel.