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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->1999 Vol.18 No.4

Preliminary Study on Embryonic Development of Bradybaena brevispira
Author of the article:XIONG Yan1, ZHEN He-qi2, XIE Si-guang2
Author's Workplace:(1.Department of Biology, Hainan Normal College, Haikou 571158; 2.Department of Biology, Southwest China Teachers University, Chongqing 400715)
Key Words:embryonic development; Bradybaena brevispira
Abstract:The paper delas with the embryonic development of Bradybaena brevispira. Under the atmospheric temperature of 23-25, the embryonic development lasted 364 hours, and the diameter of embryo increased about 20 times. Based on the morphological characteristics, the development process of the embryo may be divided into cleavage, blastula, gastrocoel, trochophore, veliger, juvenile form and hatching 7 stages.
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