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Systematics of the Pufferfish Genus Arothron

河豚属系统学

基本信息

批准号：
02640589
负责人：
MATSUURA Keiichi
金额：
$ 1.09万
依托单位：
National Science Museum
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02640589/
关键词：
Arothron Systematics New Species Rare species Distribution 系統分類

项目摘要

This research was made to clarify the systematics of the pufferfish genus Arothron. Osteological examinations of representative of this genus showed that Arothron has distinct characters in its cranium when compared to the other genera of the family Tetraodontidae.Many specimens of every species of this genus collected from the tropical regions of the Indo-Pacific were examined to study taxonomic problems. This research resulted in finding three new species. The first new species was taken from the seas around South Africa. This species is closely related to Arothron inconditus but distinguished from it by having no stripes or markings on the body. The second new species was collected from coral reefs in the Indo-Pacific from the western Indian Ocean eastward to the Marshall Islands. This species is similar to Arothron mappa in color, but it is different from the latter by having several dark encircling lines around the eye. Arothron mappa does not have these lines but possess many dark radiating lines around the eye. The third new species were collected from Okinawa. This species is relatively similar to Arothron hispidus and A. reticularis, but it differs from these two species in having many irregular white lines on the body.Detailed studies were made to clarify taxonomic confusions in Arothron hispidus and A. reticularis. Previous researchers separated them by the proportional measurements of the length and depth of the caudal peduncle. However, the examination on many specimens of the two species showed that this character does not indicate a clear difference between them. The spine distribution and black blotch around the gill opening clearly differentiate the two species.

本研究旨在阐明叉口鲀属的系统学问题。通过对该属代表性种的骨骼学研究，发现Arothron的头骨与Tetraodontidae科其他属的头骨相比具有明显的特征。这项研究发现了三个新物种。第一个新物种是从南非周围的海域捕获的。该物种与Arothron inconditus关系密切，但与它的区别在于身体上没有条纹或标记。第二个新物种是从西印度洋向东到马歇尔群岛的印度洋-太平洋珊瑚礁中采集的。这一物种在颜色上与Arothron mappa相似，但与后者不同的是，它的眼睛周围有几条深色的环绕线。马帕没有这些线条，但眼睛周围有许多黑色的辐射线。第三个新种采自冲绳。本种与Arothron hispidus和A.对Arothron hispidus和A.网状层以前的研究人员通过尾梗的长度和深度的比例测量将它们分开。然而，对这两个物种的许多标本的检查表明，这一特征并不表明它们之间有明显的差异。刺的分布和鳃口周围的黑色斑点明显区分这两个物种。