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Pakistan Journal of Biological Sciences
  Year: 2000 | Volume: 3 | Issue: 12 | Page No.: 2154-2158
DOI: 10.3923/pjbs.2000.2154.2158
Ecological Significance of Geographic Differences in Growth Rate of The Sand Lizard, Acanthodactylus boskianus
Darwish and H.K. Hussein

Abstract:
In the present study a combination of laboratory and field enclosure experiments were carried out to investigate the sources of variation in growth rates among two elevationally distinct populations of the sand lizards, Acanthodactylus boskianus. Two experiments were conducted to identify the factors that explain the pattern of geographic variation of growth rates in this species. The hatchlings from the two elevation sites reared under identical laboratory conditioned grew at the same rate irrespective of their origin. This finding suggests that the observed differences in growth rate between these two populations were driven by environmental factors. On the other hand, the effect of site where hatchlings were reared was investigated by raising the hatchlings from high elevation site in outdoor enclosures located at low and high elevation sites. Lizards located in the high elevation site grew faster than lizard located at low one. This finding is consistent with the observed differences in growth between the natural populations inhabiting the two localities and emphasize that environmental factors may play a major role in explaining geographic variation in growth as an important parameter in life history traits.
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How to cite this article:

Darwish and H.K. Hussein , 2000. Ecological Significance of Geographic Differences in Growth Rate of The Sand Lizard, Acanthodactylus boskianus. Pakistan Journal of Biological Sciences, 3: 2154-2158.

DOI: 10.3923/pjbs.2000.2154.2158

URL: https://scialert.net/abstract/?doi=pjbs.2000.2154.2158

 
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