Is the interspecific variation of body size of land snails correlated with rainfall in Israel and Palestine?

  • Hausdorf B
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The hypothesis that body size of land snail species increases with aridity in Israel and Palestine because large snails lose relatively less water due to their lower surface to volume ratio has been investigated. Data on rainfall amplitudes of 84 land snail species in Israel and Palestine and on their body sizes were used to test for interspecific correlations between body size and rainfall. Four methods, means of body sizes in rainfall categories, the midpoint method, the across-species method, and a phylogenetically controlled analysis (CAIC) showed that there is no significant correlation between body size of land snail species and their rainfall amplitude in Israel and Palestine. The lack of an interspecific correlation between body size and rainfall amplitude may be the result of conflicting selective forces on body size. © 2006 Elsevier Masson SAS. All rights reserved.

Author-supplied keywords

  • Body size
  • Israel
  • Land snails
  • Palestine
  • Rainfall

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  • Bernhard Hausdorf

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