Journal
ISRAEL JOURNAL OF ECOLOGY & EVOLUTION
Volume 69, Issue 1-2, Pages 53-55Publisher
BRILL
DOI: 10.1163/22244662-bja10045
Keywords
chirality; gastropod; Eilat; Red Sea
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We found that the populations of two gastropod species in the inter-tidal zone of the Red Sea at Eilat primarily exhibit dextral chirality of their shells. We observed differences in sinistral and dextral shell torsions for both Tenguella granulata and Clanculus pharaonius. The implications of sinistral chirality in terms of ecology and evolution are uncertain, but it appears to be a directional process rather than random.
We studied and found that the populations of two gastropod species in the inter-tidal zone of the Red Sea at Eilat demonstrate a predominantly dextral chirality of their shells. We identified lateralization sinistral/dextral shell torsion for 675 live Tenguella granulata (left = 114, 16.9%; right = 561, 83.1%) and 405 Clanculus pharaonius (left = 102, 25.2%; right = 303, 74.8%). In both cases, we found differences between sinistral and dextral shell torsions for Tenguella granulata and Clanculus pharaonius. The ecological and evolutionary consequences of individuals with sinistral chirality are unclear, but there are indications that it is a directional rather than stochastic process.
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