Volume 22 Issue 4
Jul.  2001
Turn off MathJax
Article Contents
DU Wei-Guo, JI Xiang. Growth,Sexual Size Dimorphism and Female Reproduction of Blue tailed Skinks,Eumeces elegans. Zoological Research, 2001, 22(4): 279-286.
Citation: DU Wei-Guo, JI Xiang. Growth,Sexual Size Dimorphism and Female Reproduction of Blue tailed Skinks,Eumeces elegans. Zoological Research, 2001, 22(4): 279-286.

Growth,Sexual Size Dimorphism and Female Reproduction of Blue tailed Skinks,Eumeces elegans

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2001-08-22
  • We report data on growth,sexual dimorphism and female reproduction for bluetailed skinks,Eumeces elegans,from a population in Hangzhou,Zhejiang,eastern China.All the animals were captured from the field and then raised in the laboratory.The body and head sizes of 449 skinks were measured to indicate ontogenetic changes in sexual size dimorphism.The growth of 94 juveniles and 50 adults and the reproductive output of 12 adult females were determined.We pay particular attention to the point during ontogeny at which males and females diverge in body size (SVL) and head size (length and width) and the way through which females increase their reproductive output.Adults were sexually dimorphic in coloration,body size and head size,with male adults being larger in both body and head size than female adults.Newly emerged young did not show sex difference in SVL,and male and female juveniles (SVL <69.3 mm) exhibit isometric growth pattern of SVL.Male and female adults (SVL >69.3 mm) showed allometric growth pattern of SVL,as male adults grew faster than female adults.Therefore,It was concluded that sexual dimorphism in body size of E.elegans occurred only in adults.Our data revealed that male and female juveniles larger than 50 mm SVL began to diverge in head size,with males having larger heads than females.This sexual dimorphism resulted from the greater head growth rate relative to SVL in males when their SVLs were larger than 50 mm SVL,and became increasingly pronounced in adults.The sexual dimorphism in body and head size suggested that the strategy of energy partition of adult males and females was different.Adult males partition relatively more energy into body and head growth so as to improve the reproductive fitness,in contrast,adult females partition relatively more energy into reproductive investment other than body growth.Morever,adult females pa rtition relatively less energy into head growth but more into carcass growth,thereby leaving a larger space for containing more eggs.The smallest reproductive female in our sample is 69.3 mm SVL,and all females larger than this size lay a single clutch of eggs per breeding season.Clutch size,clutch mass and clutch mean egg mass were all positively correlated with maternal SVL,with average 6.4 eggs,2.783 g and 0.554 g,respectively.Females of E.elegans increase reproductive output mainly through increasing clutch size (egg number) and egg size as well.
  • loading
  • Relative Articles

    [1] Marco ENDRUWEIT. Range extension of Lepidocephalichthys alkaia (Teleostei: Cobitidae) and notes on its sexual dimorphism. Zoological Research, 2016, 37(3): 186-188.  doi: 10.13918/j.issn.2095-8137.2016.3.186
    [2] Elena V. Anufriieva, Nickolai V. Shadrin. Factors determining the average body size of geographically separated Arctodiaptomus salinus (Daday, 1885) populations. Zoological Research, 2014, 35(2): 132-141.  doi: 10.11813/j.issn.0254-5853.2014.2.132
    [3] ZHAND Feng, LI Fa-zeng, *. Effect of Albizia julibrissin on Growth and Brain Monoamine Neurotransmitters in Chronic-Stressed Rats. Zoological Research, 2006, 27(6): 621-625.
    [4] ZHANG Yong-pu , *, DU Wei-guo, SHOU Lu. Inter-population Differences in Reproductive Life-history Traits of Blue-tailed Skinks (Eumeces elegans) from Hangzhou and Ningde, Eastern China. Zoological Research, 2006, 27(3): 255-260.
    [5] LIN Zhi-hua, JI Xiang. Sexual Dimorphism in Morphological Traits and Food Habits in Tiger Frogs,Hoplobatrachus rugulosus in Lishui,Zhejiang. Zoological Research, 2005, 26(3): 255-262.
    [6] LEI Si-jia, YE Shi-zhou. Effect of Ration Level on Growth in Juvenile Softshelled Turtles,Trionyx sinensis. Zoological Research, 2004, 25(1): 43-47.
    [7] XU Xue-feng, ZHANG Jian-long. Thermal Dependence of Food Assimilation in Two Juvenile Skinks,Sphenomorphus indicus and Eumeces elegans. Zoological Research, 2004, 25(5): 410-414.
    [8] LIU Yong-zhang, ZHANG Yong-pu. Ultrastructure of Spermatozoa of Eumeces elegans. Zoological Research, 2004, 25(5): 429-435.
    [9] LIN Chi-xian, QIU Qing-bo, LIN Long-hui, JI Xiang. Sexual Dimorphism and Reproductive Output in Reevese's Butterfly Lizards,Leiolepis reevesi. Zoological Research, 2004, 25(6): 477-483.
    [10] SUN Jun, ZHAI Wan-yin, DING Xiang-huan, GU Fu-kang. Effects of Symbiont on the Morphology,Growth,Resistance to Oxidation,and Saccharide Content of Hosts in the Paramecium bursaria-Chlorella System. Zoological Research, 2003, 24(3): 191-195.
    [11] LIU Jin-song, WANG De-hua, SUN Ru-yong. Growth and Development of Homeothermy in Nestlings of Eurasian Spoonbill (Platalea eucorodia). Zoological Research, 2003, 24(4): 249-253.
    [12] ZHOU Xian-Qing, SUN Ru-Yong, NIU Cui-Juan. The Effects of Stress on Aquatic Animal's Growth,Behavior and Physiological Activity. Zoological Research, 2001, 22(2): 154-158.
    [13] ZENG Shao-Ju, ZUO Ming-Xu, ZHANG Xin-Wen. The Mechanism of Sexual Difference of Vocalization in Lonchura striata swinhoei. Zoological Research, 2001, 22(1): 51-57.
    [14] ZHU Xi, YANG Shi-de, ZOU Xiao-ping, CHEN Wei-zhen, REN Jin-bo. The Breeding Habits and Growth of The Nestling Blackcrowned Night Heron,Nycticorax nycticorax. Zoological Research, 2000, 21(1): 58-64.
    [15] ZHANG Yong-Pu, JI Xiang. Ontogenetic Changes of Sexual Dimorphism in Head Size and Food Habit in Grass Lizard,Takydromus septentrionalis. Zoological Research, 2000, 21(3): 181-186.
    [16] LIN Hao-ran. The Interactions of Neuroendocrine Regulation on Reproduction and Growth in Fish. Zoological Research, 2000, 21(1): 12-16.
    [17] JI Xiang, DU Wei-Guo. Sexual Dimorphism in Body Size and Head Size and Female Reproduction in A Viviparous Skink,Sphenomorphus indicus. Zoological Research, 2000, 21(5): 349-354.
    [18] DING Hong-biao, HAN Zheng-kang, CHENG Jie. Effects of Cimaterol on The Growth and Muscle Characteristics in Rat. Zoological Research, 1996, 17(3): 233-238.
    [19] WANG Guo-jie, HAN Zheng-kang. Effects of Total Isoflavones of Red Clover on Male Broiler Growth and Serum Testosterone Concentration. Zoological Research, 1994, 15(3): 65-69.
    [20] YANG Yue-xiong, YANG Da-rong, HE Yan-huei, LI Chao-da, SHU Chan. Influence of Trace elements on The Larvae Growth of The Ghost Moth (Hepialus). Zoological Research, 1992, 13(2): 145-151.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (1937) PDF downloads(2201) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return