Biodiversity Study Group

The Asia-Pacific islands region has attracted many naturalists due to remarkably high biodiversity and many endemic species. However, detailed histories and mechanisms of the diversification have not been well understood. In order to grasp the current status of the biodiversity in the Asia-Pacific islands region, including the Ryukyu Archipelago, we are conducting basic taxonomic studies, especially on fishes, amphibians/reptiles, and flowering plants. To examine dynamic aspects of the biodiversity, the population structure and reproductive ecology of a single species, and morphological/ecological variations within and among species as well, are also being studied. Moreover, by comparing the results of phylogenetic studies against present situation of intra-/interspecific variations as well as geo-historical events of the region, we are trying to understand external and internal factors that have caused the bio-diversification of this region.

Oryzias in the tropics are very diverse and showy

Endangered lizard, Takydromus toyamai, observed during the field survey

An unidentified species, Elatostema sp. (Urticaceae) from Iriomote Island, Okinawa

Member