Problems Threatening the Tigris Trout (Salmo tigridis Turan, Kottelat & Bektaş, 2011) Stock in Çatak Stream and Some Recommendations
Abstract
This study was carried out to reveal the problems
threatening Salmo tigridis stock inhabited in Çatak Stream and to offer some
solutions to overcome these problems. Çatak is the largest stream of the region
and located at 81 km southern of the Van city center. Salmo tigridis, which is
only distributed in Çatak and Bahçesaray streams, faces the danger of
extinction. In this study, it was observed that sand-graveling activities at
Çatak Stream muddied the stream and destroyed appropriate reproduction
habitats. Another problem is that Çatak Stream's over-destruction of vegetation
in the catchment basin increases flood risk and flood-related sudden flow
increases. In addition, it was determined that studies carried out for river
improvement and flood control disturbed the natural flow regime of the stream,
leading to deterioration in the base and coastal structure. Another threat is
the rainbow trout (Oncorhynchus mykiss) that escape from fish farms. Catching
with prohibited methods and fishing gears is also a problem that threatens the
future of native trout stock in the stream. With this study, the problems that
threaten the tigris trout stock in Çatak Stream were identified and some
proposals were presented.
Keywords
References
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Details
Primary Language
English
Subjects
Structural Biology
Journal Section
Research Article
Publication Date
December 29, 2017
Submission Date
February 8, 2018
Acceptance Date
December 22, 2017
Published in Issue
Year 2017 Volume: 1 Number: 1
Cited By
An Investigation on Some Population Parameters of Tigris Trout (Salmo tigridis Turan, Kottelat & Bektaş, 2011) for Çatak Stream, Upper Tigris Basin/ Türkiye
Journal of Limnology and Freshwater Fisheries Research
https://doi.org/10.17216/limnofish.1018239
