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On the growth and reproductive biology of asp, Aspius vorax, population from the middle reaches of Euphrates river

Al-Saleh, Fayez, Hammoud, Vienna, Hussein, Abdulrazak and Alhazzaa, Ramez 2012, On the growth and reproductive biology of asp, Aspius vorax, population from the middle reaches of Euphrates river, Turkish journal of fisheries and aquatic sciences, vol. 12, no. 1, pp. 149-156.

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Title On the growth and reproductive biology of asp, Aspius vorax, population from the middle reaches of Euphrates river
Author(s) Al-Saleh, Fayez
Hammoud, Vienna
Hussein, Abdulrazak
Alhazzaa, Ramez
Journal name Turkish journal of fisheries and aquatic sciences
Volume number 12
Issue number 1
Start page 149
End page 156
Total pages 8
Publisher Central Fisheries Research Institute
Place of publication Trabzon, Turkey
Publication date 2012-03
ISSN 1303-2712
Keyword(s) Aspius vorax
euphrates-tigris rivers
growth
reproduction
Syria
Summary Endemic asp, Aspius vorax, from the middle section of the Euphrates River flowing through eastern Syria were studied to determine the main characteristics of their population structure, morphological parameters and reproductive biology. Samples ranged between 0+ and 4+ years of age and were dominated by 2+ years old group. Total length (TL) ranged between 19 and 70 cm corresponding with 46 to 2824.5 g weight, respectively. Fish growth has isometric pattern and the overall sex ratio was unbiased. Seasonal changes in the condition factor were related with the water temperature as well as the spawning season. Annual cycle of gonadosomatic index (GSI) readings indicated that spawning season occur around March when fish longer than 36 cm can mate. Average pre-spawning GSI was greater in individuals older than 2 years. Meanwhile, female fecundity was highly related to TL and weight. These findings did not always concur with previous observations from other asp populations, mainly in southern and northern Mesopotamia. Our results highlighted basic biological aspects of the local population and indicated differences between populations which can assist in fisheries management, conservation and commercial culture of the investigated species.
Language eng
Field of Research 070401 Aquaculture
Socio Economic Objective 830102 Aquaculture Fin Fish (excl. Tuna)
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048173

Document type: Journal Article
Collections: School of Life and Environmental Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.