作者: Daniel M. Portik , Theodore J. Papenfuss
DOI: 10.1016/J.YMPEV.2011.09.024
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摘要: The Red Sea has had a profound biogeographic effect on organisms with Afro-Asian distributions, resulting in complex patterns of admixture the Arabian Peninsula. We investigate phylogenetic affinities monitor lizard (Varanus yemenensis) restricted to southwestern Peninsula by sequencing all African species and several Asian for mitochondrial gene ND2 nuclear marker RAG-1. find evidence that V. yemenensis is origin, being most closely related white-throat monitor, albigularis, an distributed from Horn Africa southern Africa. Using divergence-dating analyses, we hypotheses infer likely mechanism colonization this species. Our results reveal both dispersal across land bridge overwater are potential explanations. observed contrasted other taxa having similar Afro-Arabian disjunct distributions better understand history region.