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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->2015 Vol.34 No.1

Research of Age Structure, Body Size and Growth Rate in Bufo andrewsi
Author of the article:HU Shuzhan1, LU Di1, ZHAO Lianjun2, LIAO Wenbo1*, ZHOU Caiquan1*
Author's Workplace:1. Institute of Rare Animal and Plants, College of Life Sciences, China West Normal University, Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), Nanchong, Sichuan Province 637009, China;
2. Wanglang National Nature Reserve Administration Bureau, Mianyang, Sichuan Province 622550, China
Key Words:Andrew's toad (Bufo dndrewsi); age structure; body size; growth rate
Abstract:In this paper, age structure, body size and growth rate of Andrew's toad (Bufo andrewsi) were studied using skeletochronology. Lines of arrested growth were distinctly observed in phalanges slices of 74 adult individuals collected in west China including 47 males and 27 females. A positive relationship between body size and age was found in two sexes (males: F1, 46=4.48, r=0.30, P=0.04; females: F1, 26= 4.87, r=0.40, P=0.04). The age at sexual maturity and longevity observed was 3 and 11 yrs in males, 4 and 11 yrs in females, respectively. There was significant difference in average age between the sexes (Z=2.27, P<0.01), with females being larger than males (males, 6.2±1.8; females, 8.4±1.8). Female average body size (snout-vent length), 91.9 mm±7.2 mm, was larger than males, 74.8 mm±5.5 mm (t=2.348, P<0.01). Females have greater growth rate than males (males, r=2.32; females, r=2.48), showing a difference growth pattern. A significant relationship between age and body size within each sex was found in this species.
2015,34(1): 41-46 收稿日期:2014-3-31
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