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谢舍尔和韦拉拉河漫滩湿地（埃塞俄比亚塔纳湖）：它们是尖吻鲈和洄游性唇鲮鱼类物种的重要繁殖栖息地吗？

Shesher and Welala floodplain wetlands (Lake Tana, Ethiopia): are they important breeding habitats for Clarias gariepinus and the migratory Labeobarbus fish species?

作者信息

Anteneh Wassie, Dejen Eshete, Getahun Abebe

机构信息

Department of Biology, College of Science, Bahir Dar University, PO Box 79, Bahir Dar, Ethiopia.

出版信息

ScientificWorldJournal. 2012;2012:298742. doi: 10.1100/2012/298742. Epub 2012 Apr 30.

DOI:10.1100/2012/298742
PMID:22654587
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3361231/
Abstract

This study aims at investigating the spawning migration of the endemic Labeobarbus species and C. gariepinus from Lake Tana, through Ribb River, to Welala and Shesher wetlands. The study was conducted during peak spawning months (July to October, 2010). Fish were collected through overnight gillnet settings. A total of 1725 specimens of the genus Labeobarbus (13 species) and 506 specimens of C. gariepinus were collected. Six species of Labeobarbus formed prespawning aggregation at Ribb River mouth. However, no Labeobarbus species was found to spawn in the two wetlands. More than 90% of the catch in Welala and Shesher wetlands was contributed by C. gariepinus. This implies that these wetlands are ideal spawning and nursery habitats for C. gariepinus but not for the endemic Labeobarbus species. Except L. intermedius, all the six Labeobarbus species (aggregated at Ribb River mouth) and C. gariepinus (spawning at Shesher and Welala wetlands) were temporally segregated.

摘要

本研究旨在调查塔纳湖特有的唇鲃属物种和尖吻鲈从塔纳湖经里布河洄游至韦拉拉和谢舍尔湿地的产卵洄游情况。该研究在产卵高峰期（2010年7月至10月）进行。通过夜间设置刺网来采集鱼类。共采集到1725个唇鲃属标本（13个物种）和506个尖吻鲈标本。六种唇鲃属物种在里布河口形成了产前聚集。然而，未发现唇鲃属物种在这两个湿地产卵。韦拉拉和谢舍尔湿地超过90%的渔获量来自尖吻鲈。这意味着这些湿地是尖吻鲈理想的产卵和育幼栖息地，但并非唇鲃属特有物种的理想栖息地。除中间唇鲃外，在里布河口聚集的所有六种唇鲃属物种以及在谢舍尔和韦拉拉湿地产卵的尖吻鲈在时间上是隔离的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/b8895bee41e1/TSWJ2012-298742.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/d1314a5d63a7/TSWJ2012-298742.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/975cf3c51a36/TSWJ2012-298742.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/86e34aee6217/TSWJ2012-298742.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/2388372cb00c/TSWJ2012-298742.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/a391b8532c17/TSWJ2012-298742.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/4302817c1478/TSWJ2012-298742.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/b8895bee41e1/TSWJ2012-298742.007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/d1314a5d63a7/TSWJ2012-298742.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/975cf3c51a36/TSWJ2012-298742.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/86e34aee6217/TSWJ2012-298742.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/2388372cb00c/TSWJ2012-298742.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/a391b8532c17/TSWJ2012-298742.005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/4302817c1478/TSWJ2012-298742.006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2720/3361231/b8895bee41e1/TSWJ2012-298742.007.jpg

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