한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제39권5호
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  • Pages.410-418
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  • 2006
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  • 0374-8111(pISSN)
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  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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낙지 (Octopus minor)의 성 성숙과 성장 특성

Sexual Maturity and Growth Characteristics of Octopus minor

  • 김동수 (목포지방해양수산청 해남해양수산사무소) ;
  • 김재만 (목포대학교 기초과학부 생물학전공)
  • Kim, Dong-Soo (Haenam Maritime Affairs and Fisheries Office, Mokpo Regional Maritime Affairs and Fisheries Office) ;
  • Kim, Jae-Man (Division of Natural Sciences, Mokpo National University)
  • 발행 : 2006.10.31
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초록

Sexual maturity and growth characteristics of Octopus minor were investigated in 796 individuals from mud flats in Goorori, Muan-Goon, Korea. Gonadosomatic index (GSI) peaked between June and July in females and between November and January in males. The discrepancy in the index peaks between females and males might result from the earlier sexual maturation of males. The sex ratio was biased toward females (68%) in April and toward males (78%) in September, although the differences were not significant (p>0.05). In females, about 50% of individuals with a mantle length of 70.6 mm were sexually mature versus 100% of individuals with mantle lengths over 80 mm. In females, fecundity was also related to size, ranging from 44 eggs in individuals with a mantle length of 54 mm to 179 eggs in the female with a mantle length of 100.5 mm. The relationship between mantle length (ML) an body weight (BW) was BW=0.008 ML$^{2.2797}$ (n=389, r$^2$=0.83, p<0.01) in males and BW=0.029 ML$^{2.2797}$ (n=407, r$^2$=0.74, p<0.01) in females. Analysis of co-variation showed that the difference in the slopes of the two regression lines was significant (p<0.01). Analysis of mantle length-frequency for each month revealed 1 to 3 normal distribution modes. The growth parameters obtained by fitting the modal progression to the seasonalized von Bertalanffy growth function (VBGF) were ML$\infty$= 112.38 mm, K=1.9, C=0.90, and WP=0.1. The results indicate that the seasonal growth oscillation of the stock is very strong and winter is the season when growth is the slowest.

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참고문헌

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피인용 문헌

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  2. Maturity and spawning of the giant Pacific octopus, Octopus dofleini in the coast of Gangwondo, East Sea vol.50, pp.2, 2014, https://doi.org/10.3796/KSFT.2014.50.2.154
  3. Size selectivity of the net pot for common octopus Octopus minor used in the southern coastal sea of Korea vol.49, pp.3, 2013, https://doi.org/10.3796/KSFT.2012.49.3.200
  4. 낙지 (Octopus minor)의 산란과 부화 vol.40, pp.4, 2007, https://doi.org/10.5657/kfas.2007.40.4.243
  5. 한국 탄도만 낙지 (Octopus minor) 의 자원생물학적 연구 vol.34, pp.2, 2006, https://doi.org/10.9710/kjm.2018.34.2.95
  6. Prey preference of the common long-armed octopus Octopus minor (Cephalopoda: Octopodidae) on three different species of bivalves vol.37, pp.5, 2006, https://doi.org/10.1007/s00343-019-8217-7
  7. Feeding Ecology of Octopus minor in the Mud Flats vol.32, pp.3, 2006, https://doi.org/10.13000/jfmse.2020.6.32.3.665
  8. Construction of Artificial Spawning Area for Octopus minor in Muddy Tidal Flat, Chonnam Area vol.33, pp.3, 2006, https://doi.org/10.13000/jfmse.2021.6.33.3.561
  9. 통발의 그물코 크기 변화에 따른 낙지의 입망 행동과 어획 성능 vol.57, pp.3, 2006, https://doi.org/10.3796/ksfot.2021.57.3.185