Some Reproduction Characteristics and Weight-Length Relationships of the  Spangled emperor, Lethrinus nebulous (Lethrinidae) of the South Coastal of  Iran (Persian Gulf and Oman Sea)

Seyyed Amin Taghavi MOTLAGH; Jafar SEYFABADİ; Arezoo VAHABNEZHAD; Mehdi Ghodrati SHOJAEİ; Maryam HAKİMELAHİ

Makale detayları

Some Reproduction Characteristics and Weight-Length Relationships of the Spangled emperor, Lethrinus nebulous (Lethrinidae) of the South Coastal of Iran (Persian Gulf and Oman Sea)

Yazarlar:

Seyyed Amin Taghavi MOTLAGH | Jafar SEYFABADİ | Arezoo VAHABNEZHAD | Mehdi Ghodrati SHOJAEİ | Maryam HAKİMELAHİ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838468

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

Monthly data of length composition for Spangled emperor, Lethrinus nebulosus (Lethrinidae), landed between  September 2007 to August 2008 along the Persian Gulf and Oman Sea were used to estimate the weight-length relationship,  maturity stage, maturity length and spawning season of the stock. Macroscopically, L. nebulosus ovaries consisted of two  cylindrical gonads of approximate equal size. The monthly calculated mean values of gonadosomatic index (GSI) of females  were indicate to increase from february, reach the highest in march and decline in june. The peak spawning season of L.  nebulosus occurred in march. More than 50% of Spangled emperors were mature at the size of 31 cm. Transitional L.  nebulosus gonads were characterized by the concurrent degeneration of all oocytes and the proliferation of spermatocysts near  the edge of the lamellae, an increase in blood vessels along strands of stromal tissue within the lamellae and the formation of  multiple sperm sinuses. The weight-length relationship was estimated with a= 0.051 and b= 2.722, indicates that Spangled  Emperor has alometric growth. 	 	 		 .

 

Monthly data of length composition for Spangled emperor, Lethrinus nebulosus (Lethrinidae), landed between  September 2007 to August 2008 along the Persian Gulf and Oman Sea were used to estimate the weight-length relationship,  maturity stage, maturity length and spawning season of the stock. Macroscopically, L. nebulosus ovaries consisted of two  cylindrical gonads of approximate equal size. The monthly calculated mean values of gonadosomatic index (GSI) of females  were indicate to increase from february, reach the highest in march and decline in june. The peak spawning season of L.  nebulosus occurred in march. More than 50% of Spangled emperors were mature at the size of 31 cm. Transitional L.  nebulosus gonads were characterized by the concurrent degeneration of all oocytes and the proliferation of spermatocysts near  the edge of the lamellae, an increase in blood vessels along strands of stromal tissue within the lamellae and the formation of  multiple sperm sinuses. The weight-length relationship was estimated with a= 0.051 and b= 2.722, indicates that Spangled  Emperor has alometric growth. 	 	 		 .

Makale detayları

Some Reproduction Characteristics and Weight-Length Relationships of the Spangled emperor, Lethrinus nebulous (Lethrinidae) of the South Coastal of Iran (Persian Gulf and Oman Sea)

Yazarlar:

Seyyed Amin Taghavi MOTLAGH | Jafar SEYFABADİ | Arezoo VAHABNEZHAD | Mehdi Ghodrati SHOJAEİ | Maryam HAKİMELAHİ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838468

Sıklık:

Üç Aylık

pISSN:

1303-2712

Lethrinus nebulosus

protogyny

Maturity stage

Transitional gonad

allometric growth

Iran

Sayı

Makale detayları

Some Reproduction Characteristics and Weight-Length Relationships of the Spangled emperor, Lethrinus nebulous (Lethrinidae) of the South Coastal of Iran (Persian Gulf and Oman Sea)

Yazarlar: Seyyed Amin Taghavi MOTLAGH | Jafar SEYFABADİ | Arezoo VAHABNEZHAD | Mehdi Ghodrati SHOJAEİ | Maryam HAKİMELAHİ

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 2

Belge Tipi: Makale

Yayın Tarihi: 3/2010

Belge Dili: Türkçe

Document ID (Org No.): 2000838468

Sıklık: Üç Aylık

pISSN: 1303-2712

Lethrinus nebulosus

protogyny

Maturity stage

Transitional gonad

allometric growth

Iran

Sayı

Yazarlar:

Seyyed Amin Taghavi MOTLAGH | Jafar SEYFABADİ | Arezoo VAHABNEZHAD | Mehdi Ghodrati SHOJAEİ | Maryam HAKİMELAHİ

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2010 Vol.10 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2010

Belge Dili:

Türkçe

Document ID (Org No.):

2000838468

Sıklık:

Üç Aylık

pISSN:

1303-2712