한국패류학회지 (The Korean Journal of Malacology)

한국패류학회 (The Malacological Society of Korea)
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경상북도 영일만에 분포하는 이매패류의 자원조사

A Study on bivalves in Yeongil Bay of Gyeongsangbuk-Do Province, Korea

  • 투고 : 2012.05.11
  • 심사 : 2012.06.01
  • 발행 : 2012.06.30
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초록

조사기간 동안 경상북도 영일만 내의 총 6개 정점에서 채집된 패류는 피조개와 떡조개 2종 이었다. 패류의 총 채집개체수에서는 1,703마리, 총 생체량은 140.9 kg이었는데, 이중 떡조개가 개체수 1,198마리 (생체량 76.1 kg), 피조개가 개체수 505마리 (생체량 64.8 kg) 이었다. 채집된 주요 패류의 각장 범위는 떡조개가 25.76-67.88 mm (평균, 58.08 mm), 피조개가 46.82-113.74 mm (평균, 76.86 mm) 로서 성숙한 개체들이었다. 주요 패류의 해역별 채집량에 있어서는 항외지역이 개체수 1,332마리 (생체량 105.4 kg) 로 항내지역의 개체수 371마리 (생체량 35.5 kg) 보다 많았다. 또한, 패류의 크기에 있어서도 항외지역의 패류가 항내지역보다 큰 경향을 나타내었다. 소해면적법 (SAM) 에 의한 영일만 내의 피조개 현존량은 242톤으로 산정되었으며, 어업인들에 의해 이용되고 있는 피조개의 연 생산량은 17.93-95.53톤이었다.

Bivalves collected by a dredge in Yeongil Bay of Gyeongsangbuk-Do Province, Korea in May, 2010 and August, 2010 were 2 species including Dostinorbis japonicus and Scapharca broughtonii. The total abundance of bivalves were 1,703 inds. and 140.9 kg. Among them, the abundance of D. japonicus were 1,198 inds. and 76.1 kg. And the abundance of S. broughtonii were 505 inds. and 64.8 kg. The shell length by bivalves species were 25.76-67.88 mm (mean, 58.08 mm) in D. japonicus and 46.82-113.74 mm (mean, 76.86 mm) in S. broughtonii consisting mainly of recruitment group. By regional abundance comparison, the bivalves abundance collected in the outside harbor was 1,332 inds. and 105.4 kg, which was much more than that of the inside harbor indicating 371 inds. and 35.5 kg. In terms of size, the bivalves collected in the outside harbor were 49.49-67.88 mm (mean, 58.47 mm) in D. japonicus and 48.21-113.74 mm (mean, 77.48 mm) in S. broughtonii, which were larger than those of the inside harbor. The yearly biomass of the main commercial target species, S. broughtonii by swept area method (SAM) was estimated up to 242.1 tons. However, considering the regional differences of bivalves between the inside harbor and the outside harbor by abundance and size comparison, it might have been overfished to bivalves in the inside harbor.

키워드

참고문헌

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피인용 문헌

  1. Catch and Bycatch of Dredge in the Yeongil Bay, Pohang vol.51, pp.4, 2015, https://doi.org/10.3796/KSFT.2015.51.4.493
  2. Species composition and distribution property of dredge fishery in Yeongil Bay, Korea vol.52, pp.1, 2016, https://doi.org/10.3796/KSFT.2016.52.1.048
  3. The historical process of dredge fishery according to the construction of the Saemangeum Dike in Jeollabuk-do, Korea vol.53, pp.4, 2017, https://doi.org/10.3796/KSFT.2017.53.4.327
  4. 강릉 연안에서 형망의 갈퀴 간격 및 망목 크기에 따른 어획 생물의 종조성 및 군집 분석 vol.50, pp.4, 2012, https://doi.org/10.3796/ksft.2014.50.4.530
  5. 울진바다목장에서 형망으로 어획된 수산자원의 군집구조 vol.47, pp.6, 2012, https://doi.org/10.5657/kfas.2014.0935
  6. 새만금방조제 건설로 인한 조업구역의 변경이 전라북도 근해형망어업의 패류어획량에 미치는 영향 vol.53, pp.3, 2012, https://doi.org/10.3796/ksft.2017.53.3.266
  7. 전남 지역의 패류 형망어선의 개량 vol.55, pp.2, 2012, https://doi.org/10.3796/ksfot.2019.55.2.162
  8. 하계 광양만 주변 해역의 새우조망 어획조사 및 수산자원 음향조사 vol.52, pp.3, 2019, https://doi.org/10.5657/kfas.2019.0288