2009年4月5日 星期日

變色龍鯛的分類檢討以及巴西東南部的9個新種

文獻來源: Ottoni, F.P. & W.J.E.M. Costa. 2008. Taxonomic revision of the genus Australoheros Rícan & Kullander, 2006 (Teleostei: Cichlidae) with descriptions of nine new species from southeastern Brazil. Vertebrate Zoology 58 (2): 207-232. [全文下載]

Abstract
Nine new species of Australohero from Southern Brazil are herein described: Australoheros austrani from rio Sao Joao basin; A. barbosae from rio Preto basin, rio Paraiba do Sul basin; A. ipatinguensis from rio Doce basin; A. macacuensis from rio Amcacu basin, A. macaensis from rio Macae basin, Amuriae from rio Muriae basin, rio Paraiba do Sul basin; A. paraibae from rio do Peixe basin, rio Paraiba do Sul basin; A. robustus from corrego da Areia basin, rio Paraiba do Sul basin; and A. saquarema from lagoa de Saquarema system. The new species are easily distinguished from their congeners from South Brazil, Northern Argentina and North Uruguay (except A. scitulus) by having 12 caudal vertebrae (vs. 13 or more). The new species are distinguished from A. scitulus and A. forquiha by having no dark marks on side of head (vs. dark marks present on side of head), and differ from A. ribeirae by meristic counts. the nine new species differ from each other by several meristic counts, some morphometric measurements, shape of the snout and color pattern. A new phylogeny of the genus is required, because when these new species from Southern Brazil are included into the groups proposed by Rican & Kullander (2006, 2008), the characters turns incongruent.

有關A. ribeirae之原始描述請由此下載, 此外請參見Cichlidae.com對本屬的介紹

圖片連結: aquapage.net (credit: eric1968)