Three new Indo-Australian species of the sciaenid genus Atrobucca, with a reevaluation of generic limit.

概要

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Three new species of the sciaenid genus Atrobucca are described: A. kyushini from off Borneo, differs from all known congeners in having no swimbladder appendages enveloping the bladder, no forward directed branches from the ventral limbs of the appendages, a long tube-like last appendage parallel to the bladder wall and a pale mouth lining; A. brevis from off northern Australia and Papua New Guinea, is distinguished by its short pectoral fin (less than 23%SL) and pleural rib on the 11th vertebra; A. adusta from Papua New Guinea, is distinctive in having a low dorsal soft ray number (23-24) and long caudal peduncle (27-30%SL). Atrobucca Chu, Lo et Wu is redefined to accommodate the new species: the genus is principally characterized by the swimbladder appendages divided into developed dorsal and ventral limbs, and the only slightly curved sulcus tail of the sagitta. A key and diagnoses are provided for all known species of Atrobucca.
日本魚類学会の論文