| 要旨トップ | 目次 | 日本生態学会第59回全国大会 (2012年3月,大津) 講演要旨
ESJ59/EAFES5 Abstract


一般講演(ポスター発表) P1-182J (Poster presentation)

Relative importance of range expansion, speciation and niche differences on regional species diversity in the trunk-ground Anolis lizards in Cuba.

*Cádiz Díaz, A. (Tohoku Univ.), Nagata, N. (Tohoku Univ.), Díaz Beltrán, L.M. (Nat. Museum Natural History of Cuba), Echenique- Díaz, L.M. (Miyagi Univ. Edu.), Akashi, H. (Tohoku Univ.), Makino, T. (Tohoku Univ.), and Kawata, M. (Tohoku Univ.)

Understanding the underlying causes of species diversity patterns across the globe is a fundamental goal in ecology. Species diversity is thought to be determined by ecological processes in local communities and biogeographical (migration and range expansion) and evolutionary processes. Anolis lizards are suited for studies of the evolution of community structure because the species have diverged to different ecomorphs which adapt to different niches in the forests. In Cuba, the most dominant species are Trunk-Ground (TG) anoles, and several species coexist sympatrically even though they have the same ecomorphs. We collected 11 TG species from 11 localities. We recorded coexisting species composition in each locality. Then, we inferred phylogenetic relationships of individuals using mtDNA and nuclear genes. The results showed that 2 to 4 species coexist sympatrically and A. sagrei, A. homolechis and A. allogus (or A. ahli) were often coexisting in many localities. These species originated from different regions and they could expand their range over wide area of Cuba. Differences in species richness among the regions are largely depending on the number of speciation in the regions.


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