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국회도서관 홈으로 정보검색 소장정보 검색

초록보기

Recently, domestic fishing production of Japanese horse mackerel has been continuously decreasing. To achieve sustainable fishing of this species, it is essential to acquire its target strength (TS) for accurate biomass estimation and to study its ecological characteristics. To date, there has been no TS research using a broadband echosounder targeting Japanese horse mackerel. In this study, for the first time, we synchronized an underwater camera with a broadband frequency (nominal center frequency of 200 kHz, range: 160-260 kHz) to measure the TS according to the body size (16.8-35.5 cm) and swimming angle of the species. The relationship between Japanese horse mackerel length and body weight showed a general tendency for body weight to increase as length increased. The pattern of the frequency spectra (average values) by body length exhibited a similar trend regardless of body length, with no significant fluctuations in frequency observed. The lowest TS value was observed at 243 kHz while the highest TS values were recorded at 180 and 257.5 kHz. The frequency spectra for the swimming angles appeared to be flat at angles of –5, 0, 30, 60, 75, and 80° while detecting more general trends of frequency spectra for swimming angle proved challenging. The results of this study can serve as fundamental data for Japanese horse mackerel biomass estimation and ecological research.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
전라북도 곰소만 연안조망에 어획된 수산생물의 종조성 및 군집구조 = Species composition and community structure of aquatic organisms caught by the coastal beam trawl in the Gomso Bay, Jeollabuk-do of South Korea 주영환, 윤상철, 최지훈, 강명희, 김진구, 조현수 p. 101-113

제주도 남부 사계리 연안에서 삼중자망으로 어획된 어류군집 변화 = A variation of fish assemblage by trammel net in the coastal waters of Sagye-ri, southern Jeju Island 고준철, 김보연, 한송헌, 김민선, 곽정현 p. 114-127

어류군집 조사 결과 비교를 통한 최적의 방법 선택 = Optimal selection of fish assemblage survey method through comparing the result 김재영, 엄상민, 김병모, 최태섭 p. 128-141

중심 주파수 200 kHz의 과학어군탐지기를 활용한 전갱이의 광대역 주파수 특성 = Ex situ combined in situ target strength of Japanese horse mackerel using a broadband echosounder 강명희, 김한수, 강동하, 정지훈, Fredrich Simanungkalit, 강돈혁 p. 142-151

UWB 기반 측위시스템을 이용한 연안자망어선 어선원의 작업위치와 위험요소 = Risk factors and fisher positioning task during coastal gillnet fishing boat operation using UWB based positioning system 류경진, 김수형, 이경훈, 김성훈, 원성재, 이유원 p. 152-160

통발어선에서 발생하는 산업재해에 대한 정량적 위험성 분석 = Quantitative risk analysis of industial incidents occurring in trap boats 이승현, 김수형, 류경진, 이유원 p. 161-169

양식어업 어장관리선에 승선하는 어선원의 안전사고 위험요인 분석 = Analysis of risk factors for safety accidents for fisher onboard aquaculture fisheries management vessel 이승현, 김수형, 류경진, 이유원 p. 170-178

실습선 백경호의 조종성능 평가 = Evaluation of the maneuverability of the fisheries training ship Baek-Kyung 이춘기, 류경진, 이유원, 김수형 p. 179-185

어류 가두리에 적용하기 위한 황동 직조 어망의 성능 평가 = Evaluation of brass weaving fishing nets for aquaculture cage applications 김건우, 박수봉 p. 186-193

해수 열원 히트펌프와 태양광 발전을 이용한 순환여과식 양식장의 에너지 절감 효과 분석 = Analysis of energy-saving effects of recirculation aquaculture system using seawater source heat pumps and solar power generation 류종혁, 정현석, 정석권 p. 194-206