Reproductive Biology of Acclimatization in Pomacea canaliculata
Author of the article:XIONG Honglin1, 2, FU Xuemei1#, CHEN Lin1, WU Weidong1, WANG Yan 1, WANG Zhijian2*
Author's Workplace：(1. Department of Life Sciences, Qiannan Normal University for Nationalities, Duyun, Guizhou Province 558000, China；2. Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing 400715, China)
Key Words：Pomacea canaliculata; acclimatization; reproductive biology
Abstract：The reproductive biology of Pomacea canaliculata with the methods of wild observation (indoor feeding) and anatomy was studied. The results indicate that Pomacea canaliculata is dioecious with the obvious secondary sex character. The second and third spiral whorls of the female are black while the male’s are pale yellow. The reproductive system of the female consists of ovary, oviduct, uterus and genital pore while that of the male contains testis, deferent duct, seminal vesicle, prostate and penis. Moreover, the reproductive system of the male also includes aid copulatory apparatus and scent gland. Aid copulatory apparatus and scent gland play an important role to the special copulatory pattern of Pomacea canaliculata. Pomacea canaliculata lays eggs on the surface of water, in a backwards manner and the pleopod is crucial to the laying process. Special copulatory organs of the male, unique laying pattern and a high level of reproductive capacity of the female, hatching away from water result in a large progeny size, which adapts perfectly to the environments.