Ontogeny of Biochemical Phases of Fertilized Eggs and Yolk Sac Larvae of Gilthead Seabream (Sparus aurata L.)

Mehmet NAZ

Makale detayları

Ontogeny of Biochemical Phases of Fertilized Eggs and Yolk Sac Larvae of Gilthead Seabream (Sparus aurata L.)

Yazarlar:

Mehmet NAZ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2009 Vol.9 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2009

Belge Dili:

Türkçe

Document ID (Org No.):

2000838526

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

Biochemical compositions of fertilized gilthead seabream (Sparus aurata) eggs and yolk sac larvae were determined at different periods (after hatching, 0th, 24th, 48th and 96th hours). Results showed that the yolk sac larvae and eggs contain more monounsaturated (MUFAs) and polyunsaturated (PUFAs) fatty acids than saturated fatty acids (SFAs). The changes observed in essential (EAA) and non-essential amino acid (NEAA) contents of fertilized eggs and yolk sac larvae through the experimental period were significant (P<0.05). Amylase and tyripsin activity was detected in fertilized eggs. Leucine alanine (LEU-ALA) peptidase activity was higher than other enzymatic activities throughout the experimental period. Aminopeptidase N(LAP) activity decreased from fertilized egg to hatching. After hatching, LAP activity increased until 24th hour and then decreased up to the beginning of exogenous feeding (P<0.05).The lowest alkaline phosphatase activity (AP) was taken from fertilized eggs. Then, AP activity tended to increase until the end of experimental period (P<0.05). In conclusion, our results can give information about the nutritional requirements of seabream larvae at the start of exogenous feeding.  	 	 		 .

 

Biochemical compositions of fertilized gilthead seabream (Sparus aurata) eggs and yolk sac larvae were determined at different periods (after hatching, 0th, 24th, 48th and 96th hours). Results showed that the yolk sac larvae and eggs contain more monounsaturated (MUFAs) and polyunsaturated (PUFAs) fatty acids than saturated fatty acids (SFAs). The changes observed in essential (EAA) and non-essential amino acid (NEAA) contents of fertilized eggs and yolk sac larvae through the experimental period were significant (P<0.05). Amylase and tyripsin activity was detected in fertilized eggs. Leucine alanine (LEU-ALA) peptidase activity was higher than other enzymatic activities throughout the experimental period. Aminopeptidase N(LAP) activity decreased from fertilized egg to hatching. After hatching, LAP activity increased until 24th hour and then decreased up to the beginning of exogenous feeding (P<0.05).The lowest alkaline phosphatase activity (AP) was taken from fertilized eggs. Then, AP activity tended to increase until the end of experimental period (P<0.05). In conclusion, our results can give information about the nutritional requirements of seabream larvae at the start of exogenous feeding.  	 	 		 .

Makale detayları

Ontogeny of Biochemical Phases of Fertilized Eggs and Yolk Sac Larvae of Gilthead Seabream (Sparus aurata L.)

Yazarlar:

Mehmet NAZ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2009 Vol.9 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2009

Belge Dili:

Türkçe

Document ID (Org No.):

2000838526

Sıklık:

Üç Aylık

pISSN:

1303-2712

Gilthead seabream

Sparus aurata

egg

yolk-sac larvae

digestive enzyme

amino acid

fatty acid

Sayı

Makale detayları

Yazarlar: Mehmet NAZ

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2009 Vol.9 Issue 1

Belge Tipi: Makale

Yayın Tarihi: 1/2009

Belge Dili: Türkçe

Document ID (Org No.): 2000838526

Sıklık: Üç Aylık

pISSN: 1303-2712

Sayı

Yazarlar:

Mehmet NAZ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2009 Vol.9 Issue 1

Belge Tipi:

Makale

Yayın Tarihi:

1/2009

Belge Dili:

Türkçe

Document ID (Org No.):

2000838526

Sıklık:

Üç Aylık

pISSN:

1303-2712