Jajroud河泥鳅雌雄间性雄性的证据,Oxynoemacheilus bergianus (Derjavin, 1934)

A. Pourshabanan, A. Sari, B. Zeynali, M. Malek
{"title":"Jajroud河泥鳅雌雄间性雄性的证据,Oxynoemacheilus bergianus (Derjavin, 1934)","authors":"A. Pourshabanan, A. Sari, B. Zeynali, M. Malek","doi":"10.22059/PBS.2018.234753.1271","DOIUrl":null,"url":null,"abstract":"In the present study, JajroudRiverloach, Oxynoemacheilus bergianus (Derjavin, 1934), was examined monthly for a previous observation of oocyte presence within testes tissues. Accordingly, the gonad development in O. bergianus is examined histologically. Although our data show typical fish gonad development and differentiation in female and some male individuals, some males show intersexuality. Gonad histology and development of females’ ovaries were carried out to provide comparative data on oocyte staging in testes. Intersex males were observed throughout the year except in March and July, especially in individuals larger than 5.3 cm total length. Occurrence of intersex males seems to be associated with sex ratios and their deviation from 1:1 and fish age at different times of the year. As no real ovotestes were observed, histological changes were considered to be a transient stage in the testicular tissue with no evidence of sex change in fish. In the absence of testes fully transformed to ovaries, this type of change was considered as intersex.","PeriodicalId":20726,"journal":{"name":"Progress in Biological Sciences","volume":"53 1","pages":"97-108"},"PeriodicalIF":0.0000,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An evidence of intersex males in Jajroud River Loach, Oxynoemacheilus bergianus (Derjavin, 1934)\",\"authors\":\"A. Pourshabanan, A. Sari, B. Zeynali, M. Malek\",\"doi\":\"10.22059/PBS.2018.234753.1271\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the present study, JajroudRiverloach, Oxynoemacheilus bergianus (Derjavin, 1934), was examined monthly for a previous observation of oocyte presence within testes tissues. Accordingly, the gonad development in O. bergianus is examined histologically. Although our data show typical fish gonad development and differentiation in female and some male individuals, some males show intersexuality. Gonad histology and development of females’ ovaries were carried out to provide comparative data on oocyte staging in testes. Intersex males were observed throughout the year except in March and July, especially in individuals larger than 5.3 cm total length. Occurrence of intersex males seems to be associated with sex ratios and their deviation from 1:1 and fish age at different times of the year. As no real ovotestes were observed, histological changes were considered to be a transient stage in the testicular tissue with no evidence of sex change in fish. In the absence of testes fully transformed to ovaries, this type of change was considered as intersex.\",\"PeriodicalId\":20726,\"journal\":{\"name\":\"Progress in Biological Sciences\",\"volume\":\"53 1\",\"pages\":\"97-108\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress in Biological Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.22059/PBS.2018.234753.1271\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Biological Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22059/PBS.2018.234753.1271","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

摘要

在本研究中,JajroudRiverloach, Oxynoemacheilus bergianus (Derjavin, 1934)每月检查一次,以观察睾丸组织中卵母细胞的存在。因此,从组织学上考察了柏氏水蛭的性腺发育。虽然我们的数据显示了典型的鱼类性腺发育和分化,在雌性和一些雄性个体中,一些雄性表现出中间性。对雌性卵巢的性腺组织学和发育进行了研究,以提供睾丸卵母细胞分期的比较数据。除3月和7月外,全年均有雌雄同体雄鱼出现,尤其是体长大于5.3 cm的雄鱼。双性雄鱼的出现似乎与性别比及其与1:1的偏差以及一年中不同时期的鱼龄有关。由于没有观察到真正的卵泡,组织学变化被认为是睾丸组织的短暂阶段,在鱼类中没有性别变化的证据。在没有睾丸完全转化为卵巢的情况下,这种类型的变化被认为是双性人。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An evidence of intersex males in Jajroud River Loach, Oxynoemacheilus bergianus (Derjavin, 1934)
In the present study, JajroudRiverloach, Oxynoemacheilus bergianus (Derjavin, 1934), was examined monthly for a previous observation of oocyte presence within testes tissues. Accordingly, the gonad development in O. bergianus is examined histologically. Although our data show typical fish gonad development and differentiation in female and some male individuals, some males show intersexuality. Gonad histology and development of females’ ovaries were carried out to provide comparative data on oocyte staging in testes. Intersex males were observed throughout the year except in March and July, especially in individuals larger than 5.3 cm total length. Occurrence of intersex males seems to be associated with sex ratios and their deviation from 1:1 and fish age at different times of the year. As no real ovotestes were observed, histological changes were considered to be a transient stage in the testicular tissue with no evidence of sex change in fish. In the absence of testes fully transformed to ovaries, this type of change was considered as intersex.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信