Temperature Requirements of Some Percids and Adaptations to the Seasonal Temperature Cycle

摘要: Temperature requirements are reviewed for three North American percids (walleye, Stizostedion vitreum vitreum; sauger, S. canadense; and yellow perch, Perca flavescens), Eurasian (perch, P. fluviatilis; pikeperch, lucioperca; ruffe, Gymnocephalus cernua), nine cohabitant fish species comparison. Whole-organism responses described each — primarily concerning reproduction, growth, survival, activity. The classified as temperature mesotherms they arranged in order of their thermal follows: pikeperch > perches ruffe sauger walleye. spp. annual spawners with synchronous oocyte growth during fall through winter, culminating spring spawning. Maturation occurs below 12 °C. Spawning from late February early July at 2–26 °C over geographic ranges. Oocyte is asynchronous, accelerated by warm temperatures; batch spawning a prolonged period, mi...