Harriotta avia sp. nov. – a new rhinochimaerid (Chimaeriformes: Rhinochimaeridae) described from the Southwest Pacific

IF 1.4 4区环境科学与生态学 Q3 ECOLOGY

Environmental Biology of Fishes Pub Date : 2024-08-21 DOI:10.1007/s10641-024-01577-4

Brittany Finucci, Dominique Didier, David A. Ebert, Madeline E. Green, Jenny M. Kemper

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Abstract

Harriotta avia sp. nov., a new species of long-nose chimaera (Holocephali: Chimaeriformes: Rhinochimaeridae), is described from specimens collected off New Zealand in the Southwest Pacific Ocean. The species is distinguished from its congeners by a combination of the following characters: elongated, narrow and depressed snout up to 56% BDL; long, slender trunk; beak-like vomerine tooth plate; large eye, length 8–12% BDL and height 5–7% BDL; long dorsal spine reaching slightly beyond apex of the dorsal fin; and slender rod-like pelvic claspers. The skin is deciduous, and uniform chocolate brown when intact. Harriotta avia sp. nov. is also distinguished from other Harriotta species based on DNA sequence divergence of the NADH2 gene. Harriotta avia sp. nov. is reported from the New Zealand-Australian region. Conclusions here show that Harriotta raleighana, a presumed globally distributed species, likely comprises several species and the genus Harriotta warrants a revision with specimens representing all ocean basins.

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Harriotta avia sp.

Harriotta avia sp.nov.是长吻奇美拉鱼（Holocephali: Chimaeriformes: Rhinochimaeridae）的一个新种，描述自西南太平洋新西兰外海采集的标本。该物种通过以下特征与同类区分开来：细长、狭窄、下凹的吻部，长达 56% BDL；细长的躯干；喙状犁齿板；大眼，长 8-12% BDL，高 5-7% BDL；长的背棘略微超出背鳍的先端；细长的杆状骨盆扣。皮肤脱落，完整时呈均匀的巧克力棕色。Harriotta avia sp. nov. 与其他 Harriotta 种类的区别还在于 NADH2 基因的 DNA 序列差异。Harriotta avia sp.本文的结论表明，假定分布于全球的 Harriotta raleighana 可能由多个物种组成，因此有必要对 Harriotta 属进行修订，并提供代表所有大洋盆地的标本。

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来源期刊

Environmental Biology of Fishes 环境科学-海洋与淡水生物学

CiteScore

2.60

自引率

14.30%

发文量

169

审稿时长

3 months

期刊介绍： Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding. Environmental Biology of Fishes publishes original papers, review papers, brief communications, editorials, book reviews and special issues. Descriptions and submission requirements of these article types can be found in the Instructions for Authors.