Summerfelt, 1996



Citation


Summerfelt, S.T. (1996) Intensive culture of walleye fry., pp. 161-185

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Sander vitreus Larvae Temperature during larval development Feed acceptance and survival is greater at 18.4°C than at 12.8°C, and an ideal temperature range is 15.6-18.4, with 18.4°C as optimum/ 17.0 °C
Sander vitreus Larvae Sibling intracohort cannibalism Most mortality from cohort cannibaslim occurs from trunk attacks, not the result of successful consumption f the prey, which is from the tail first. Cannibalism begin as the fry begin feeding Present
Sander vitreus Larvae Full yolk-sac resorption At a mean temperature of 16.4°C, the yolk sac dissapears in the 5th day posthatch, about 68 TU, but it may persist up to 13 days at temperature of 13.2°C. Also reported that the yolk sac dissapeared in 10-11 days 10.5 °C * day
Sander vitreus Larvae Onset of exogeneous feeding Initiation of feeding 100-120 110.0 °C * day
Sander vitreus Larvae Initial larval size Descirbed as 4.8, 6-9, 6-8.6, 7.1, 5.7-7.8 7.5 mm
Sander vitreus Larvae Larvae behaviour The prolarvae are weak swimmers, so water currents in culture banks should be low, because larvae are quickly exhausted Demersal