• Title, Summary, Keyword: 아르헨티나 짧은지느러미오징어

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Abundance of Argentine shortfin squid, Illex argentinus(Castellanos) in Relation to Fluctuation of Water Temperature in the Southwestern Atlantic Ocean (수온변동에 따른 아르헨티나 짧은지느러미오징어, Illex argentinus의 풍도 변화)

  • Kim, Yeong-Seung;Kim, Doo-Nam
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.40 no.4
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    • pp.282-294
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    • 2004
  • Catches of Argentine shortfin squid Illex argentinus showed a sharp decrease, reaching 99,000ton in 1993 and 56,700ton in 1994, and then increased again reaching 130,300ton in 1997 from 78,600 ton in 1996. The Korean squid jigging fishery around Falkland for Illex argentinus commences usually its operation in January and lasts August and peak in catch was showed from March to May. To elucidate possible environmental effects on their abundance during the main fishing season in 1993-1994 and 1996-1997, sea surface temperatures were used as an indicator of the position and strength of the oceanographic structures in the Southwestern Atlantic Ocean. The high catch and catch per unit effort of Illex argentinus was showed when the Faliland Current was not affected in the fishing area in 1993 and 1997. But they were sharply decreased from the middle of April 1994 and the late of April 1996 when the Faliland Current directly affects the fishing ground.

Catch Variations of Argentine Shortfin Squid Illex argentinus in the Southwest Atlantic (남서대서양 아르헨티나 짧은지느러미오징어(Illex argentinus)의 어획변동)

  • Ku, Jeong Eun;Choi, Seok-Gwan;An, Doo-Hae;Kim, Eunjung
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.53 no.6
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    • pp.934-941
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    • 2020
  • The spatial and temporal catch variations of Argentine shortfin squid Illex argentinus in the Southwest Atlantic Ocean (SWA) were analyzed using Korean squid-jigging fishery data collected through electronic reporting system (ERS) from 2016 to 2020. The ERS linked with GPS has been implemented for collecting fishing data from all Korean fishing vessels operating in international waters since November 2015. The fishing period of the Korean squid-jigging fishery in the SWA runs from early summer to autumn (December to June) in the Southern Hemisphere. The fishing ground was extended from 42°S to 48°S along the Patagonian continental shelf and slope, and the main fishing ground was formed around the Falkland Islands. The yearly catch per unit effort (CPUE) of I. argentinus fluctuated between 1.69 and 7.53 tons/day. In this study, during the fishing season, a south and westward shift on the fishing ground was observed indicating the feeding migration of the south Patagonian stock. The shift in monthly fishing centroids differed according to fishing season. The gradual southward shifts of fishing centroids were observed in the catch years (2017 and 2018), whereas unapparent shifts in fishing centroids were observed in the low catch years (2016 and 2019).