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한국 동해의 살오징어(Todarodes pacificus) 어장변화 및 풍도와 동물플랑크톤 분포와의 관계
황강석 ( Kang Seok Hwang ),강수경 ( Suk Yung Kang ),오택윤 ( Taeg Yun Oh ),최광호 ( Kwang Ho Choi ),이동우 ( Dong Woo Lee ) 한국수산과학회 2012 한국수산과학회지 Vol.45 No.2
The common squid Todarodes pacificus is a dominant species in Korean waters, where it is captured preponderantly by the angling fishery. The spawning and nursery grounds of T. pacificus extend from the southern East Sea to the northern East China Sea. Consequently, the environmental conditions in this area during the spawning and nursery seasons might affect the abundance of T. pacificus. This study, analyzed the relationship between the distribution of zooplankton and the abundance of T. pacificus and variation in the squid angling fishing grounds in Korean waters. There was a positive relationship between the fluctuations in zooplankton and the catch per unit effort (CPUE; kg.day-1.person-1) of the angling fishery in the East Sea of Korea. The main fishing season is from July to December and the CPUE was closely related to the zooplankton biomass in April in the East Sea. Recently, the center of the squid jigging ground has moved drastically from the area around Ulleung Island to the northern East Sea. We postulate that the fishing grounds of the squid angling fishery will move farther north with climate change.
이동진 ( Dong Jin Lee ),강수경 ( Suk Yung Kang ),최광호 ( Kwang Ho Choi ),정경미 ( Kyung Mi Jung ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6
Fish catches by a set net from January 2007 to November 2009 were analyzed to assess fish species composition and seasonal variations in the coast of Gijang, Korea. Over 389 kg fish representing 78 species, 45 families and 17 orders were collected during three years of the study. Dominant species were jack mackerel Trachurus japonicus , anchovy Engraulis japonicus and herring Clupea palasii , and these three species comprised 67.3% of the total number of individuals and 60.7% of the total biomass. Size distribution of the dominant species for jack mackerel, anchovy and herring ranged from 2.2 cm to 22.6 cm, from 2.5 cm to 14.8 cm, from 4.0 cm to 29.0 cm in fork length, respectively. Anchovy was the only species that occurred throughout all seasons in the Gijang coast. Generally, species richness was highest in spring (April to June) when sea temperature began to increase.
거제도 다포 연안 정치망 어획물의 종조성 및 주요 어종의 분포 특성
정경미 ( Kyung Mi Jung ),이동진 ( Dong Jin Lee ),강수경 ( Suk Yung Kang ),최광호 ( Kwang Ho Choi ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6
We analyzed annual and seasonal variations in fish species composition and distribution patterns using both daily catch and quantitative analysis data collected from a set-net fishery over a period of two years (2011-2012) on the coast of Dapo, Geoje Island. Set-net fishing season in this area is from May to November, and the annual yield based on the daily catch data was 171,412 kg in 2011, and 102,611 kg in 2012. In total, there were 46 species (belonging to 36 families and 12 orders) in 2011, and 41 species (belonging to 25 families and 9 orders) in 2012. The dominant species in terms of numbers were Trachurus japonicus , Engraulis japonicus , Clupea pallasii , Scomber japonicus , and Sphyraena pinguis . The range in fork length for T. japonicus and E. japonicus was from 3.2 to 23.9 cm, and from 2.6 to 13.3 cm, respectively. The fork length of recruiting juveniles to the Dapo set-net fishing ground ranged from 4.6 to 7.8 cm (median) for T. japonicus , and from 4.1 to 5.0 cm (median) for E. japonicus . The fact that most of the fish caught from the two species were at immature growth stages implies that the coast of Dapo can act as a nursery area for these migratory species.