채낚기에 의한 북서대서양 캐나다 일렉스오징어(Illex illecebrosus)의 어획특성
Catching characteristics of northern shortfin squid by the experimental jig fishery in the Northwest Atlantic Ocean (NAFO area)
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북서대서양 NAFO 수역에서 원양오징어 채낚기 조업선을 사용하여 2005년 8월 6일-10월 5일까지 61일간 공기물방울 야광낚시, 공기물방울낚시, 피크낚시에 대한 오징어 채낚기 어획시험을 실시한 결과는 다음과 같다. 일일 평균 35대 조상기로 6시간 40분간 어획시험을 실시하여 220kg의 캐나다 일렉스오징어를 어획하였으며, 어획시험기간 중 총 어획량은 12,726kg이었다. 공기물방울낚시와 공기물방울 야광낚시 그리고 피크낚시간의 어획율 시험에서는 피크낚시가 다른 두 종류의 낚시 보다 어획율이 57-86% 높게 나타났고, 어획물의 동장조성은 암컷 130-240mm, 수컷 130-205mm 범위였고, 위 내용물은 갑각류인 Crustacea를 52.7% 섭이하여 가장 많은 것으로 나타났다. 일일 라인당 어획량(kg/line-day)은 3.5kg으로 다른 종보다 매우 낮게 나타났다. 오징어군의 낚시에 대한 반응이 소극적이고, 집어된 오징어군이 주위에 오래 동안 머물지 않고 곧 사라지는 것은 북태평양 빨강오징어와 유사한 어군행동으로 보이며, 이러한 반응을 나태내는 오징어는 채낚기로 어획하기에는 적합하지 않은 종으로 판단된다. 따라서 보다 확실한 결과를 얻기 위해서는 추가적인 연구가 필요하고, 한편으로 다른 어법에 대한 실험도 이루어져야 할 것으로 사료된다.
Abstract
This paper described the experimental squid jigging fishery conducted by a commercial fishing vessel in the Northwest Atlantic Ocean from August to October 2005. Author carried out experimental jiggings of 65 times during 57 days by three type of jigs which were Pick Jig, Soft Jig and Soft luminous Jig. The total catch, effort/day and catches/line-day of Northern Shortfin Squid (Illex illecebrosus) were 12,726kg, 35 auto jigging machine and 3.5kg, respectively. Higher CUPE was observed in September, August and October. Catch ratio of Pick Jig was higher by 57-86% than those of Soft Jig and Soft luminous Jig. Higher catch was recorded at the 42˚ 55ʹ N, 62˚ 10ʹ W with surface temperature ranging 18-21℃. The range of the dorsal mantle length was from 13.5cm to 23.0cm with average 17.2cm for female and from 13.0cm to 20.0cm with average 17.0cm for male. Sex ratio showed 55.4% of female.
참고문헌 (16)
- "Growth and maturation in two successive seasonal groups of the short-finned squid Illex illecebrosus from the strait of Sicily (central Mediterranean).", 57, pp.31~41 (2000)
- "Population structure, growth, and sexual maturation of short-finned squid (Illex illecebrosus) at Newfoundland.", 54, pp.137~146 (1997)
- "Recruitment of short-finned squid in the Northwest Atlantantic Ocean and some environmental relationships Journal of Cephalopod Biology" (1993)
- "A review of the biology and exploitation of shortfinned squid in the northwest Atlantic Ocean in relation to assessment and management of the resourece", (N3051,), pp.33~ (1998)
- "Environmental effects on recruitment of short-finned squid (Illex illecebrosus).", 57, pp.1002~1013 (2000)
- "fecundity and spawning in females of the genus Illex ICES Journal of Marine Science", pp.393~404 (1993)
- "Bias associated with statolith-based methodologies for ageing squid a comparative study on llex illecebrosus(Cephalopoda: Ommastrephidae)", 244, pp.161~180 (2000)
- "Population biology of northern shortfin squid in the Northwest Atlantic Ocean and initial documentation of a spawning area", 61, pp.252~266 (2004)
- "An age-based cohort mpdel for estimating the spawning mortality of semelparous cephalopods with an application to per-recruit calculations for the northern shortfin squid Article in press" (2006), Article in press.
- "Population biology of northern shortfin squid (Illex illecebrosus) in the Northwest Atlantic Ocean and initial documentation of a spawning area.", 61, pp.252~266 (2004)
- "Interim monitoring report for the assessment of northern shortfin squid (Illex illecebrosus) in subarea 3+4 during 2004.", (N5131,), pp.9~ (2005)
- "Stock assessment of northern shortfin squid in the Northwest Atlantic during 1993" (1996)
- "Stomach contents analysis of common squid Todarodes pacificus Steenstup in Koean Waters", 31(1), pp.26~30 (1998)
- "Abundance of Argentine shortfin squid Illex argentinuse in relation to fluctuation of water temperature in the southwestern Atlantic Ocean", 40(4), pp.282~294 (2004)
- "Amendment 8 to the Atlantic mackerel, squid, and butterfish fishery mangement plan." (1998), mid-Atlantic Fisheries Management Council,
- "Research survey of neon flying squid in the Northwest Pacific Ocean Report of NFRDI", pp.277~ (2005)