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Morphological and Taxonomical Studies on Natural Hybrids of the Pufferfih Genus Takifugu.

河鲀属自然杂交种的形态学和分类学研究。

基本信息

批准号：
63540667
负责人：
MATSUURA Keiichi
金额：
$ 0.32万
依托单位：
NATIONAL SCIENCE MUSEUM, TOKYO
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63540667/
关键词：
Fishes Takifugu Natural hybrids Morphology Taxonomy Distribution 形態学分類学

项目摘要

Materials for this research were collected from the Japan Sea coasts of Honshu and from the west coast of Kyushu. Morphological examinations on these materials revealed that there are three natural hybrids in the genus Takifugu; they are (I) Takifugu xanthopterus x T. rubripes, (II) T. xanthopterus x T. vermicularis, and (III) T. porpbyreus x T. rubripes (or T. chinensis). The hybrid (I) is characterized by having small spines on the dorsal and ventral sides of the body, black back with oblique patterns of white lines and spots. This hybrid has been collected from the waters around Kyushu. The hybrid of (II) shows intermediate conditions between T. xanthopterus and T. vermicularis in the body shape and color. It is distinct in the combination of the following characters: all fins yellow, dorsal side of body dark brown with many irregular white spots, and weak minute spines on the dorsal and ventral sides of the body. This hybrid has been collected in Ariake Bay. The hybrid of (III) is characterized by having very weak spines on the dorsal and ventral sides of the body, black back of the body with a large round black blotch on the side behind the pectoral fin, and the white anal fin. This hybrid has been known from the East China Sea and the western part of the Japan Sea.The nomenclatural confusion about the generic name of Takifugu was carefully clarified. Literature surveys revealed that Fugu, which has been frequently used by many authors, is actually a junior subjective synonym of Takifugu.Japanese species of Takifugu were also examined to clarify their systematic features. A key to these species was given.

本研究的材料收集自日本本州海岸和九州西海岸。对这些材料的形态鉴定表明，该属有3个天然杂交品种；它们分别是：(I)黄斑鱼x红斑鱼，（II）黄斑鱼x蛭状斑鱼，以及（III）斑蝶x红斑鱼（或中国斑蝶）。杂交(I)的特点是在身体的背侧和腹侧有小刺，黑色的背部有倾斜的白色线条和斑点。这种杂交品种是从九州附近的水域采集的。（II）的杂交在体型和颜色上表现出介于黄翅t和蛭形t之间的中间状态。它在以下特征的组合中很明显：所有的鳍都是黄色的，身体背面深棕色，有许多不规则的白色斑点，身体背部和腹部有微弱的微小刺。这种混血儿是在有明湾收集的。（III）杂交种的特点是身体背侧和腹侧的刺很弱，身体背部黑色，胸鳍后面一侧有一个大的圆形黑色斑点，肛门鳍为白色。这种杂交种产于中国东海和日本海西部。对河豚属名称的命名混淆进行了认真的澄清。文献调查显示，被许多作者频繁使用的“河豚”实际上是“东豚”的初级主观同义词。为了阐明它们的系统特征，我们还对日本的东豚进行了研究。找到了这些物种的钥匙。