On the Growth and Reproductive Biology of asp, Aspius vorax, Population   from the Middle Reaches of Euphrates River

Fayez Al-saleh; Vienna Hammoud; Abdulrazak Hussein; Ramez Alhazzaa

Makale detayları

On the Growth and Reproductive Biology of asp, Aspius vorax, Population from the Middle Reaches of Euphrates River

Yazarlar:

Fayez Al-saleh | Vienna Hammoud | Abdulrazak Hussein | Ramez Alhazzaa

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838331

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

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. 	 	 		 .

 

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. 	 	 		 .

Makale detayları

On the Growth and Reproductive Biology of asp, Aspius vorax, Population from the Middle Reaches of Euphrates River

Yazarlar:

Fayez Al-saleh | Vienna Hammoud | Abdulrazak Hussein | Ramez Alhazzaa

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838331

Sıklık:

Üç Aylık

pISSN:

1303-2712

Aspius vorax

growth

reproduction

Euphrates-Tigris Rivers

Syria

Sayı

Makale detayları

On the Growth and Reproductive Biology of asp, Aspius vorax, Population from the Middle Reaches of Euphrates River

Yazarlar: Fayez Al-saleh | Vienna Hammoud | Abdulrazak Hussein | Ramez Alhazzaa

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 1

Belge Tipi: Makale

Yayın Tarihi: 1/2012

Belge Dili: Türkçe

Document ID (Org No.): 2000838331

Sıklık: Üç Aylık

pISSN: 1303-2712

Aspius vorax

growth

reproduction

Euphrates-Tigris Rivers

Syria

Sayı

Yazarlar:

Fayez Al-saleh | Vienna Hammoud | Abdulrazak Hussein | Ramez Alhazzaa

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838331

Sıklık:

Üç Aylık

pISSN:

1303-2712