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부산 주변 해역에 출현하는 불볼락(Sebastes thompsoni) (쏨벵이목: 양볼락과)의 생식생태 : Reproductive Ecology of a Goldeye rockfish, Sebastes thompsoni (Scorpaeniformes: Scorpaenidae) in the Coastal Waters of Busan, Korea

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Authors

백근욱; 박세창; 김지형; 남기문; 허성회; 박주면

Issue Date
2010-04
Publisher
한국어류학회
Citation
한국어류학회지, Vol.22 No.1, pp.34-40
Abstract
부산 주변해역에서 2005년 1월부터 12월까지 매월 채집된 불볼락 421개체의 생식생태를 조사하였다. 불볼락의 체장범위는 13.8~31.8 cm SL이었다. 불볼락 암컷의 생식소중량지수는 3월에 가장 높았으며 그 이후 6월까지 감소하였다. 수컷의 경우 생식소중량지수는 2월에 가장 높았으며 그 이후 감소하였다. 산란시기는 1~6월로 추정되었다. 불볼락의암수간 성비에서는 유의한 차이가 나타나지 않았다(χ2-test,p¤0.05). 불볼락 암컷의 최소성숙체장은 16.8 cm였고 50%성숙체장은 20.11cm로 추정되었다. 모든 암컷은 25 cm 이상의 성숙하였고 난경은 0.6~1.75mm의 범위를 보였다. 포란수는 23,881~44,509개의 범위였고, 평균 30,937개 였다. 체장과 포란수의 관계식은 F=9.3762 SL1.1662(R2=0.8120), 체중과 포란수의 관계식은 F=184.37 Ln(BW)-665.09(R2=0.8713)로 추정되었다.

The reproductive ecology of the goldeye rockfish (Sebastes thompsoni) was examined using 421 specimens collected monthly from January to December 2005 in the coastal waters of Busan, Korea. Specimens ranged in standard length (SL) from 13.8 to 31.8 cm. The gonadosomatic index (GSI) of females was highest in March and decreased until June. In males the GSI was the highest in February after that the values declined. The spawning season lasted from January to June, and the ratio of female to male did not differ significantly (x2-test, p>0.05). The length at first spawning was 16.8cm SL, and the size at 50% maturity was estimated at 20.11 cm SL. All females more than 25 cm SL were sexually mature and the egg diameters were from 0.60 to 1.75 mm. Fecundity (F) ranged from 23,881 to 44,509 eggs, with a mean of 30,937 eggs. The relationship between fecundity and standard length was estimated as F=9.3762 SL1.1662 (R2=0.81). The relationship between fecundity and body weight (BW) was estimated as F=184.37 Ln (BW) - 665.09 (R2=0.87).
ISSN
1225-8598
URI
https://hdl.handle.net/10371/192544
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  • College of Veterinary Medicine
  • Department of Veterinary Medicine
Research Area Bacteriophage Therapy, Veterinary Medicine, Veterinary Microbiology

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