摘要
短尾拟鲿头骨结构中无顶骨、后耳骨、下鳃盖骨,有续软骨存在;犁骨、前颌骨;齿骨上密生铺石状牙齿;上颌骨和腭骨分别特化成粒状和棒状小骨,用以支持触须;舌颌骨、方骨、中翼骨、外翼骨发育良好;前鳃盖骨失去鳃盖作用而参与悬器形成;上枕骨具成对的三叉神经叉脊支神经孔。
Pseudobagus brevicaudalus is an economic Bagridae catfish which is abundant in the Jialing Rever, Sichuan Province. A detailed morphological study of its skull has been provided by this paper. According to the study, its skull has no parietals, opithotic or subopercular, and has paired sympletic cartilages. There are a series of cane-shaped sharp teeth on the premaxillary, vomer, dentary; furthermore, a pair of reduced, short stick-like maxillaries were found to support the barbels, and a pair of specialiyed palatines are rod-shaped; the hyomandibulars, quadrates, mesopterygoids and ectopterygoids are well developed; the preoperculars lost the function of opercular and suspend the lower jaw to the hyomanibulars; finally, the supraoculars capital has paired nerve feramina for the rami trigeminal spinalis of the cranial nerve V.
出处
《贵州大学学报（自然科学版）》
1991年第1期51-58,共8页
Journal of Guizhou University:Natural Sciences
关键词
短尾拟Chang
鲶形目
头骨形态
skull morphology
pseudobagus brevicaudalus
siluriformes
