First records of Scorpaena onaria (Scorpaeniformes: Scorpaenidae) from the southwestern Pacific Ocean, and comparisons with the Northern Hemisphere population
First records of Scorpaena onaria (Scorpaeniformes: Scorpaenidae) from the southwestern Pacific Ocean, and comparisons with the Northern Hemisphere population
复制标题
西南太平洋的鲉鱼（鲉形目：鲉科）的首次记录，以及与北半球种群的比较
DOI：
10.1080/00288330.2005.9517358
复制
发表时间：
2005
影响因子：
1.6
通讯作者：
A. Stewart
中科院分区：
文献类型：
--
作者：
H. Motomura;C. Paulin;A. Stewart
摘要Scorpaena onaria Jordan&Snyder(Scorpaena onaria Jordan&Snyder)是已知的仅产于西北太平洋的Scorpaena onaria Jordan&Snyder(Scorpaeniformes：Scorpaenidae)。与西北太平洋标本相比，西南太平洋标本具有更短的眼上触角和更大的体型，被认为是一个南方的水母种群。详细描述了南方种群，包括与所有已知的印度-太平洋蝎属物种的比较。对37个南方种群测量数据的分析发现，相对轨道直径和第二肛鳍棘长随着生长而显著变小。最初为摆线状，鳞片被上、下盖骨棘和盖骨边缘的后端包围，并在160-170 mm标准长度生长。成熟的雌性与未成熟的雌性和雄性的不同之处在于上颌更长，鼻子的背侧更陡峭，鼻棘更短。因此，以前在安达曼海和澳大利亚西北部报告的被称为疏忽链霉菌的物种被重新鉴定为丝状链球菌。
Abstract Scorpaena onaria Jordan & Snyder (Scorpaeniformes: Scorpaenidae), previously known only from the northwestern Pacific Ocean, is reported from the southwestern Pacific Ocean for the first time on the basis of 19 specimens. The southwestern Pacific specimens are regarded as a southern population of S. onaria, characterised by a shorter supraocular tentacle and larger body size compared with the northwestern Pacific specimens. The southern population is described in detail including comparisons with all known Indo‐Pacific species of the genus Scorpaena. Analyses of 37 measurements of the southern population of S. onaria found that relative orbit diameter and second anal‐fin spine length became significantly smaller with growth. Initially cycloid, the scales enclosed by the posterior tips of the upper and lower opercular spines and opercular margin change to ctenoid with growth at c. 160–170 mm standard length. A mature female differed from an immature female and males in having a longer upper jaw, steeper dorsal profile of the snout, and shorter nasal spine. As a consequence, the species previously reported as S. neglecta from the Andaman Sea and northwestern Australia was re‐identified as S. onaria.