2009年8月31日 星期一

Osteocephalus castaneicola - 一種產自玻利維亞屬亞馬遜的首蛙新種, 其食卵性蝌蚪棲息在被刺豚鼠打開的巴西栗果皮中

文獻來源: Moravec J, Aparicio J, Guerrero-Reinhard M, Calderon G, Jungfer K-H, Gvozdik V. 2009. A new species of Osteocephalus (Anura: Hylidae) from Amazonian Bolivia: first evidence of tree frog breeding in fruit capsules of the Brazil nut tree. Zootaxa 2215: 37-54.

Abstract
A new species of Osteocephalus is described from lowland Amazonia of the Departamento Pando, northern Bolivia. The new species is most similar to Osteocephalus planiceps but differs by its smaller size (SVL 47.8–51.3 mm in males, 47.7–63.3 mm in females), absence of vocal slits, lack of sexual dimorphism in dorsal tubercles, single distal subarticular tubercle on the fourth finger, absence of dark spots on flanks, and by bicoloured iris with fine dark reticulate to radiate lines. The new species inhabits terra firme rainforest, breeds in water-filled fruit capsules of the Brazil nut tree and has oophagous tadpoles. Estimations of phylogenetic relationships within Osteocephalus based on mitochondrial DNA sequences show that the new species is closely related to O. planiceps and O. deridens.

註: 所謂的巴西栗(Brazil nut)又稱巴西胡桃, 乃玉蕊科植物, 是台灣市面上常見的零嘴核果之一.