Taxonomic Status and Redescription of the Gillbacker Sea Catfish (Siluriformes: Ariidae: Sciades parkeri)
Taxonomic Status and Redescription of the Gillbacker Sea Catfish (Siluriformes: Ariidae: Sciades parkeri)
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DOI：
10.1643/ci-07-218
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发表时间：
2008-12-18
期刊：
影响因子：
2.6
通讯作者：
Bearez, Philippe
中科院分区：
文献类型：
--
作者：
Betancur-R, Ricardo;Marceniuk, Alexandre P.;Bearez, Philippe
吉尔巴克海鲶鱼是来自南美洲东北海岸的一种有效的ariid鲶鱼。有许多同义词在文献中的Gillbacker海鲶鱼，甚至最近的分类使用不同的科学名称。对来自不同地区的各种大小的个体进行了检查，并对Silurus parkeri，Bagrus flavescens，B. emphysetus、囊刺海鲶A. bonneti、黑腹拟步行虫A. clavispinosus和A. Despaxi使我们得出结论，所有这些名称都是指Gillbacker海鲶鱼，该物种的有效名称是Sciades parkeri。本种与其他种类的区别在于以下特征的组合：体色黄色;鱼鳔分为三腔，后腔大小适中;颈背盾形，通常大于枕上突;颈背前切迹缺失;头盾暴露，眶和眶后区有颗粒状突起;附属斑块的侧缘不微凹或浅切迹;连接后鼻孔的肉质沟无;和前两个鳃弓的近中鳃耙无。引人注目的种内和/或个体发育的变化，在眼睛的大小，上颌须的长度，枕上突的大小，颈背板的大小和形状，背棘厚度的贡献了众多的同义词和错误识别的斯亚德斯parkeri。白臀小蜂（英语：Bagrus albicans），在法属圭亚那发现，有时被列为白臀小蜂的异名。我们对B的正模标本的研究。然而，白色念珠菌使我们得出结论，它是Sciades proops的同义词。
The Gillbacker Sea Catfish is a valid species of ariid catfish from the northeastern coast of South America. There are many synonyms In the literature for the Gillbacker Sea Catfish and even recent classifications have used different scientific names. Examination of a wide range of sizes of Individuals from different localities and examination of types and original species descriptions of Silurus parkeri, Bagrus flavescens, B. emphysetus, Arius physacanthus, A. bonneti, A. clavispinosus, and A. despaxi has lead us to the conclusion that all these names refer to the Gillbacker Sea Catfish and the valid name for the species is Sciades parkeri. The species is distinguished from all other ariid species by the following combination of features: body coloration yellow; swim bladder divided Into three chambers, posterior chamber moderately sized; nuchal plate shield-shaped, usually larger than supraocciptal process; anterior notch of nuchal plate absent; head shield exposed and granulated In orbital and postorbital regions; lateral edge of accessory patches not emarginated or shallowly notched; fleshy furrow connecting posterior nares absent; and mesial gill rakers absent from first two gill arches. Striking intraspecific and/or ontogenetic variation In eye size, maxillary-barbel length, supraoccipital-process size, nuchal-plate size and shape, and dorsal-spine thickness contributed to the numerous synonyms and misidentifications for Sciades parkeri. Bagrus albicans, described from French Guiana, has at times been listed as a synonym of Sciades parkeri. Our examination of the holotype of B. albicans, however, led us to conclude that It is a synonym of Sciades proops.