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    • Factors influencing offspring traits in the oviparous multi-clutched lizard,Calotes versicolor (Agamidae)

      Rajkumar S Radder Bhagyashri A Shanbhag

      Clipboard Volume 29 Issue 1 March 2004 pp 105-110

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jbsc/029/01/0105-0110

    • Keywords

       

      Calotes versicolor ; lizard; offspring size; path analysis; trade-off

    • Abstract

       

      The determinants of offspring size and number in the tropical oviparous multi-clutched lizard,Calotes versicolor, were examined using both univariate and multivariate (path) analyses. InC. versicolor maternal snout-vent length (SVL) and body condition influence clutch mass and clutch size but have no significant influence on offspring size. The positive effect of maternal SVL and body condition on offspring number is counterbalanced by a negative effect of breeding time on egg mass. In fact, breeding time directly influences the offspring body mass and condition through variation in the egg mass. There is a trade-off between offspring mass and condition with offspring number, and breeding time influences both. Offspring hatched from the eggs of early (May–June) or mid (July–August) breeding periods invariably show lower mass and condition than those hatched from the eggs of late breeding season (September–October). Yet, there is no variation in offspring SVL among early, mid and late clutches. Thus, inC. versicolor offspring SVL is optimized while body mass and condition are not optimized.

    • Author Affiliations

       

      Rajkumar S Radder1 Bhagyashri A Shanbhag1

      1. Department of Zoology, Karnatak University, Dharwad - 580 003, India

    • Dates

       
      Published
      March 2004
      Manuscript received
      17 July 2003
      Accepted
      7 February 2004

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