CAJ | 학술논문

根据2012年1-4月西南大西洋公海鱿钓渔船随机采集的666尾阿根廷滑柔鱼样本,对其鱿钓渔获的群体组成、形态特征、雌雄性比、缠卵腺及性腺发育等渔业生物学进行分析。结果显示：调查期间鱿钓渔业阿根廷滑柔鱼渔获群体胴长为91~351 mm,呈双峰分布,雌、雄性平均胴长分别为243.6 mm 和214.5 mm,雌性个体显著大于雄性；雌雄性比为1.26：1,以雌性个体为主；雌性群体性成熟以Ⅱ期为主(57.9%),Ⅲ期以上个体为42.1%；雌性性成熟度、缠卵腺发育程度与个体大小密切相关,进一步研究认为缠卵腺长与其重量存在幂函数关系,且雌性性成熟个体缠卵腺指数明显大于未成熟个体；雄性个体性腺随着个体生长逐步发育。根据个体大小和性成熟状况推测,调查期间捕获的阿根廷滑柔鱼群体以南巴塔哥尼亚种群( SPS)为主,混有少量的夏季产卵( SSS)群体。
근거2012년1-4월서남대서양공해우조어선수궤채집적666미아근정활유어양본,대기우조어획적군체조성、형태특정、자웅성비、전란선급성선발육등어업생물학진행분석。결과현시：조사기간우조어업아근정활유어어획군체동장위91~351 mm,정쌍봉분포,자、웅성평균동장분별위243.6 mm 화214.5 mm,자성개체현저대우웅성；자웅성비위1.26：1,이자성개체위주；자성군체성성숙이Ⅱ기위주(57.9%),Ⅲ기이상개체위42.1%；자성성성숙도、전란선발육정도여개체대소밀절상관,진일보연구인위전란선장여기중량존재멱함수관계,차자성성성숙개체전란선지수명현대우미성숙개체；웅성개체성선수착개체생장축보발육。근거개체대소화성성숙상황추측,조사기간포획적아근정활유어군체이남파탑가니아충군( SPS)위주,혼유소량적하계산란( SSS)군체。
Fishery biology including catch stock composition, morphological properties, sex ratio, nidamen-tal gland and gonad development of squid Illex Argentines were analyzed based on the 666 samples from the China’s fishing boat in the Southwest Atlantic Ocean during January to April 2012 . The results showed that the mantle length ranged from 91 mm to 351 mm, showing a bimodal distribution, the average mantle length of females and males was 243. 6 mm and 214. 5 mm respectively, meaning that the size of female individuals was significantly bigger than that of males. The sex ratio of female to male was 1. 26:1, and the females domina-ted in this stock. The sexual maturity was mainly in phase Ⅱ (57. 9%) , but the proportion of mature indi-viduals above phase Ⅲ reached 42. 1%. The sexual maturity and nidamental gland development of female were related to the individual size and further researches suggested that nidamental gland length-weight pres-ented a power function, and nidamental gland index ( NGI) of mature individuals was significantly greater than for the immature individuals. The male gonad gradually developed with its body size. According to body size and sexual maturity, the squid captured during the investigation was mainly South Patagonic Stock ( SPS) , mixed with a small amount of Summer-Spawning Stock ( SSS) .