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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->2013 Vol.32 No.4

Observation of Rana nigromaculata Embryo Development
Author of the article: YU Yehui, ZHANG Shouchun*, LIU Chao
Author's Workplace: (College of Veterinary and Animal Science, Shenyang Agriculture University, Shenyang 110866, China)
Key Words:Rana nigromaculata; embryo development; morphological characteristics; Shenyang
Abstract:

Rana nigromaculata is one of the most widely distributed amphibians in China. The embryo development of R. nigromaculata from Shenyang was observed under microscope and the characteristics was described in detail. The results showed that, at 1920, the embryo development would take 258.66 hours and was divided into 26 phases from fertilized eggs to operculum completion stage with independent escape theca stage. The length of the embryo body was 10.315 mm±0.893 mm. The characteristics of R. nigromaculata embryo development of this study is quite different from previously reported, which may due to the different population genetic composition, specific ecological environment, water quality, or illumination, etc.

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