The endangered cyprinodont Aphanius ginaonis (Holly, 1929) from southern Iran is a valid species: evidence from otolith morphology

The endangered cyprinodont Aphanius ginaonis (Holly, 1929) from southern Iran is a valid species: evidence from otolith morphology
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来自伊朗南部的濒危鲤鱼 Aphanius ginaonis (Holly, 1929) 是一个有效物种:来自耳石形态的证据

DOI:
10.1007/s10641-009-9549-5
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发表时间:
1929
影响因子:
1.4
通讯作者:
Teimori
Teimori
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Reichenbacher;Kamrani;Esmaeili;Teimori

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AphaniusNardo,1827(Actinopteri,Cyprinodontidae)是地中海和波斯湾地区广泛分布的一个属,包括几种濒危物种。耳石形态在Aphanius是已知的分类代表一个有价值的工具,也是一个特定的群体的遗传多样性的指示。本研究主要研究了濒危鸟类A. ginaonis(冬青,1929年),这是特有的热诺温泉在伊朗南部。本文还讨论了A. ginaonishas一再受到质疑,一些学者认为,它只是代表了一个形态变异的preadA。差异本文对A. ginaonis(52个标本)与A. dispar(Rüppell,1828)(17个标本)和伊朗南部的A.来自阿拉伯联合酋长国波斯湾沿岸的鱼种群(32标本)。扫描电镜照片、耳石形态测量和统计学分析结果表明,A. ginaonis代表一个有效的物种。InA. ginaonisindividuals的标准长度超过23 mm,耳石变量的长度-高度和喙长是区分该种与其他Apanius种的有用的互补诊断特征。除了个体发育变异外,我们还发现了极高的耳石形态变异。ginaonis,包括一些形态明显偏离基本形态类型的耳石。我们推测这些变化可能是人工引入A的结果。在过去的几年里,它们被注入了基因温泉,随后进行了杂交。
AphaniusNardo, 1827 (Actinopterygii, Cyprinodontidae) is a widely distributed genus in the Mediterranean and Persian Gulf area and includes several endangered species. The otolith morphology inAphaniusis known to represent a valuable tool for the taxonomy, and is also indicative for the genetic diversity of a particular population. The present study focuses on the otoliths of the endangeredA. ginaonis(Holly, 1929), which is endemic to the Geno hot spring in southern Iran. The taxonomic status ofA. ginaonishas repeatedly been questioned, and some scholars have argued that it merely represents a morphological variation of the widespreadA. dispar. We present a comparison of the otolith morphology ofA. ginaonis(52 specimens) with that ofA. dispar(Rüppell, 1828) from the Mehran River Basin (southern Iran) (17 specimens) and anA. disparpopulation from the Persian Gulf coast of the United Arab Emirates (32 specimens). Our data obtained from SEM pictures, otolith morphometry and statistical analyses suggest thatA. ginaonisrepresents a valid species. InA. ginaonisindividuals with a standard length exceeding 23 mm, the otolith variables length–height and rostrum length represent useful complementary diagnostic characters discriminating this species from otherAphaniusspecies. Besides ontogenetic variation, we found extremely high otolith form variability inA. ginaonis, including some otoliths with a morphology distinctly deviating from the basic morphology type. We hypothesize that these variations may be a result of the artificial introduction ofA. disparinto the Geno hot spring during the last years and subsequent hybridisation.
结合耳石形态和形态测量来评估化石和现存鳉鱼(Aphanius,†Prolebias)的分类和多样性
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