| development of the pseudothumb in frogs. | frogs have highly conserved hand and foot morphology, possessing four fingers and five toes. as an exception, two japanese ranid frog species, the otton frog babina subaspera and the dagger frog babina holsti, possess a unique thumb-like structure (the pseudothumb) in the forelimb, giving an appearance of a total of five fingers on the hand. to obtain insights into the developmental mechanisms that generate this novel character, we investigated the hand morphogenesis of the otton frog. the uniqu ... | 2010 | 20147308 |
| genetic diversity and differentiation of the ryukyu endemic frog babina holsti as revealed by mitochondrial dna. | we surveyed the genetic diversity and genetic differentiation of an endangered frog, babina holsti, endemic to okinawajima and tokashikijima islands of the ryukyus, to elucidate its divergence history and obtain basic data for its conservation. genetic differentiation between the two island lineages is moderate (3.1% p-distance in the cyt b gene). this result suggests that the two island lineages have been isolated between the late pliocene and the middle pleistocene and have never migrated betw ... | 2014 | 24521314 |