Life history of Carychium tridentatum (Risso, 1826) (Gastropoda: Pulmonata: Ellobiidae) in the laboratory

Submitted by admin on Sun, 20/11/2011 18:55
KATARZYNA BULMAN
(1990)
Volume
33
Part
6
Page from
321

The following data on the life history of C. tridentatum have been obtained based on 4 years of laboratory culture (235 individuals): a. eggs — laid singly, 1 to 8 per day, 1–13 per individual lifetime, 0.35–0.42 mm in diameter, with no calcareous shell; egg mortality c. 65%, b. incubation period 7–24 days, mean 14.2 days, c. mortality of juveniles c. 19%, d. time elapsing between hatching and maturity 37–129 days, e. time elapsing between hatching and first egg 56–166 days, depending on season. Four generations have been obtained as a result of uniparental reproduction.