Korean Journal of Ichthyology (한국어류학회지)

The Ichthyological Society of Korea (한국어류학회)
권호 표지

Egg Capsule of Hongeo koreana (Chondrichthyes: Rajiformes: Rajidae)

고려홍어 Hongeo koreana의 난각(연골어강: 홍어목: 홍어과)

  • Jeong, Choong-Hoon (Research Center for Coastal Environments of Yellow Sea, Inha University) ;
  • Kim, Jin-Koo (Department of Marine Biology, Pukyong National University)
  • 정충훈 (인하대학교 서해연안환경연구센터) ;
  • 김진구 (부경대학교 자원생물학과)
  • Received : 2009.11.09
  • Accepted : 2009.12.15
  • Published : 2009.12.31
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Abstract

The egg capsule of Hongeo koreana is newly described based on two egg capsules extracted from the uterus of a female collected near the type locality, the southwestern coast of the Korean Peninsula. The egg capsule of H. koreana has the following characters: medium sized, measuring 124.5~133.7 mm in total length including horns, 102.8~109.4 mm in length excluding horns, and 41.0~42.2 mm in maximum width; asymmetrical, with the egg capsule more convex ventrally in lateral view; the surface relatively smooth, with longitudinal striations distinct, and covered with masses of sticky silky fibers; anterior and posterior aprons distinct; all four horns short, tube-like in shape, elliptical in cross section, anterior horns recurved inwardly; respiratory fissure present at tip of each of the four horns. The color of the fresh capsule is bright brown.

고려홍어의 모식산지인 한반도 남서해안에서 포획한 암컷개체의 자궁에서 직접 적출한 난각 2개를 새롭게 기재하였다. 본종의 난각은 다른 종과 비교하여 보통 크기이고, 뿔(horn)을 포함한 전장은 124.5~133.7 mm, 뿔을 제외한 주부(main portion)의 체장은 102.8~109.4 mm, 최대폭은 41.0~42.2 mm이다. 측면에서 볼 때 배쪽으로 불룩한 비대칭이고, 표면은 비교적 부드러운 편이지만 세로로 미세한 고랑(longitudinal striations)은 뚜렷하고, 매우 발달한 섬유다발(견상사(絹狀絲) silky fibers)로 덥혀 있다. 앞뒤의 apron은 뚜렷하며, 네 뿔은 짧고 튜브모양이고 그 횡단면은 타원형이고, 앞쪽 뿔은 안쪽으로 심하게 구부러져 있으며, 호흡공(respiratory fissure)은 네 뿔의 끝부분에 위치한다. 신선한 상태에서 밝은 갈색이다.

Keywords

References

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