Intersex in male invasive Atlantic lionfish, Pterois spp.

IF 1.3 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

Aquatic Biology Pub Date : 2019-01-10 DOI:10.3354/AB00705

D. G. Matthews, J. Morris

引用次数: 1

Abstract

Intersex in gonochoristic species is a reproductive abnormality in which an individual produces gametes of the type normally associated with the opposite sex. To investigate the prevalence of intersex in male lionfish Pterois spp., 884 individuals were collected from the Bahamas and North Carolina between 2004 and 2008. Histological sections of testes were scored for the presence or absence of oocytes. In intersex individuals, the number of oocytes, size, and developmental stage was recorded. The prevalence of intersex was approximately 15% and, along with all other measured metrics describing the condition, did not significantly differ between the 2 locations. Most of the intersex males displayed only primary-stage oocytes embedded in structurally normal gonadal tissue. However, 3 fish from the Bahamas exhibited oocytes of all developmental stages and complete restructuring of the gonadal tissue that is atypical of both male and female lionfish. This study is the first extensive report of intersex in lionfish, and the first in a gonochoristic reef fish.

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入侵大西洋狮子鱼的雌雄间性研究。

雌雄同体物种中的双性是一种生殖异常，其中一个个体产生通常与异性相关的配子类型。为了调查雄性狮子鱼Pterois spp.双性恋的流行程度，2004年至2008年在巴哈马群岛和北卡罗来纳州收集了884条个体。对睾丸的组织学切片进行卵母细胞有无评分。在双性个体中，记录卵母细胞的数量、大小和发育阶段。双性人的患病率约为15%，并且与描述病情的所有其他测量指标一起，在两个地区之间没有显着差异。大多数雌雄间性雄性只显示在结构正常的性腺组织中嵌入的初级阶段卵母细胞。然而，来自巴哈马群岛的3条鱼表现出所有发育阶段的卵母细胞和性腺组织的完全重组，这在雄性和雌性狮子鱼中都是不典型的。这项研究是第一次在狮子鱼中广泛报道雌雄间性，也是第一次在性腺礁鱼中报道雌雄间性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aquatic Biology 生物-海洋与淡水生物学

CiteScore

2.70

自引率

0.00%

发文量

审稿时长

3 months

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