Vertical Distribution and Feeding Ecology of the Black Scraper,  Thamnaconus modestus, in the Southern Sea of Korea

Hye Rim Kim; Jung Hwa Choi; Won Gyu Park

Makale detayları

Vertical Distribution and Feeding Ecology of the Black Scraper, Thamnaconus modestus, in the Southern Sea of Korea

Yazarlar:

Hye Rim Kim | Jung Hwa Choi | Won Gyu Park

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2013 Vol.13 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000838210

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

We investigated the vertical distribution and feeding ecology of the black scraper, Tamnaconus modestus, in the  southern sea of Korea in the spring of 2009, 2010 and 2011 using otter trawl for 60 min per site. Fish abundance was  significantly related to the basis of depth and temperature. Thamnaconus modestus occurred at depths ranging from 80 to 120  meter waters having temperature higher than 12°C. We found that 87% of the total catch were obtained at the depths between  80 and 120 meters (58% and 29% from 80-100 and 100-120 meters respectively). The total length of captured individuals  ranged from 10.6 to 38.7 cm. Individuals captured at deeper were significantly larger than those from shallower sites. Diverse  prey organisms, including algae, amphipods, gastropods, ophiuroids, and cephalopods, were found in T. modestus stomach.  The main prey items in IRI value belonged to four groups: hyperiid amphipods, gastropods, ophiuroids, and algae. The fish  showed ontogenetic diet shifts. In general, individuals in smaller size (< 20 cm) shifted their diets from vegetative food  sources to animal ones when they reach the size bigger than 20 cm. Food diversity increased with fish size. Our findings  suggested that T. modestus vertical distribution varied with depth and that fish showed ontogenetic diet shifts 	 	 		 .

 

We investigated the vertical distribution and feeding ecology of the black scraper, Tamnaconus modestus, in the  southern sea of Korea in the spring of 2009, 2010 and 2011 using otter trawl for 60 min per site. Fish abundance was  significantly related to the basis of depth and temperature. Thamnaconus modestus occurred at depths ranging from 80 to 120  meter waters having temperature higher than 12°C. We found that 87% of the total catch were obtained at the depths between  80 and 120 meters (58% and 29% from 80-100 and 100-120 meters respectively). The total length of captured individuals  ranged from 10.6 to 38.7 cm. Individuals captured at deeper were significantly larger than those from shallower sites. Diverse  prey organisms, including algae, amphipods, gastropods, ophiuroids, and cephalopods, were found in T. modestus stomach.  The main prey items in IRI value belonged to four groups: hyperiid amphipods, gastropods, ophiuroids, and algae. The fish  showed ontogenetic diet shifts. In general, individuals in smaller size (< 20 cm) shifted their diets from vegetative food  sources to animal ones when they reach the size bigger than 20 cm. Food diversity increased with fish size. Our findings  suggested that T. modestus vertical distribution varied with depth and that fish showed ontogenetic diet shifts 	 	 		 .

Makale detayları

Vertical Distribution and Feeding Ecology of the Black Scraper, Thamnaconus modestus, in the Southern Sea of Korea

Yazarlar:

Hye Rim Kim | Jung Hwa Choi | Won Gyu Park

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2013 Vol.13 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000838210

Sıklık:

Üç Aylık

pISSN:

1303-2712

Tamnaconus modestus

Southern sea of Korea

distribution

stomach contents

PCR

Sayı

Makale detayları

Vertical Distribution and Feeding Ecology of the Black Scraper, Thamnaconus modestus, in the Southern Sea of Korea

Yazarlar: Hye Rim Kim | Jung Hwa Choi | Won Gyu Park

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2013 Vol.13 Issue 2

Belge Tipi: Makale

Yayın Tarihi: 3/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000838210

Sıklık: Üç Aylık

pISSN: 1303-2712

Tamnaconus modestus

Southern sea of Korea

distribution

stomach contents

PCR

Sayı

Yazarlar:

Hye Rim Kim | Jung Hwa Choi | Won Gyu Park

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2013 Vol.13 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000838210

Sıklık:

Üç Aylık

pISSN:

1303-2712