Redescription of two ambiguous Japanese bagrids, Pseudobagrus aurantiacus (Temminck and Schlegel) and P. tokiensis Döderlein
Redescription of two ambiguous Japanese bagrids, Pseudobagrus aurantiacus (Temminck and Schlegel) and P. tokiensis Döderlein
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重新描述两种模糊的日本鲢鱼：Pseudobagrus aurantiacus（Temminck 和 Schlegel）和 P. tokiensis Döderlein
DOI：
10.11369/jji1950.41.409
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
H. Maéda
中科院分区：
文献类型：
--
作者：
Katsutoshi Watanabe;H. Maéda
虽然已知是不同的遗传和最近被视为不同的物种分类，两个日本的bagrid鲶鱼，Pseudobagrus aurantiacus（Temminck和Schlegel）和P. tokiensis Doderlein，以前没有仔细检查它们的形态差异。形态学和骨骼学特征的研究表明，前种与后种的区别在于：背鳍较高，胸棘前缘锯齿较明显，后缘锯齿较密集，基部有1-3个前向锯齿，枕上突较宽，神经上突与枕上突一样长或更长，锁骨后突较宽（后顶角>20 °），舌骨下颌与后翼骨分离较远。此外，幼鱼的体色模式在两种鱼中也有差异
Although known to be distinct genetically and recently treated as different species taxonomically, two Japanese bagrid catfishes, Pseudobagrus aurantiacus (Temminck and Schlegel) and P. tokiensis Doderlein, have not been previously scrutinized as to their morphological differences. Examination of morphometric and osteological characters revealed that the former species differs from the latter in having a higher dorsal fin, the pectoral spine more prominently serrated on the anterior edge, more densely serrated on the posterior edge, and with 1-3 antrorse serrations at the base, a broader supraoccipital process, the supraneural as long as or longer than the supraoccipital process, a broader posterior process of the cleithrum (posterior tip angle >20 o ), and the hyomandibular widely separated from the metapterygoid. In addition, the body color pattern of young fish differs in the two species