예망어구내의 상대유속과 어류의 유수감각 예민도에 대한 모델링

Modelling Relative Water Flow and its Sensitivity of Fish in a Towed Fishing Gear

  • 발행 : 1997.09.01

초록

예망어구의 유체역학적인 특성과 예망어구내에서의 유속 측정 자료를 기초로 어류의 측선 유수감각에 작용하는 유효한 유수자극량을 추산하고 정량화하기 위하여 예망어구내의 3차원적인 상대유속의 선형적인 분포정도를 모델링하였다. 예망어구내의 상대유속은 망지의 제반규격과 예망어구의 수중 전개형상에서의 각부 거리비에 따라 상대유속비를 선형적으로 수식화하여 본문의 식(3)과 (8)로 표현하였다. 이러한 상대유속비는 어류의 측선 유수감각기관에 의하여 탐지될 수 있는 와동 유수자극량의 지표로써 사용될 수 있다. 어류의 유수감각 예민도는 어류의 전장과 어체주위 상대유속에 의하여 선형적으로 변화되는 것으로 가정하고 본문의 식(9)와 같이 탐지가능한 상대유속차의 최소값으로 나타내었다. 예망어구내의 상대유속 분포에 관한 본 모델의 계산 결과는 실물예망어구에서 실측된 상대유속의 범위내에서 거의 근사하게 나타났으며 본 모델은 어류의 대망행동 모델링에서 예망어구의 유수자극과 어류의 유수감각 예민도를 상대적으로 정량화하여 어류행동의 반응요인으로 적용할 수 있을 것이다.

키워드

참고문헌

  1. J. theor. Biol. v.148 Fish without footprints Ahlborn, B.;Harper, D.G.;Blake, R.W.;Ahlborn, D.;Cam, M.
  2. FAO Fisheries Report v.62 no.3 Importance of mechanical stimulti in fish behaviour especially to trawls Chapman, C.J.
  3. Sensory Biology of Aquatic Animals Diversity of lateral line systems : Evolutionary and functional consideration Coombs, S.;Janssen, J.;Webb, J.C.;J.F. Atema(ed.);A.N. Propper(ed.);W.N. Tavolga(ed.)
  4. The mechano sensory lateral line some observations on the forces acting on neuromasts in fish lateral line canals Denton, E.J.;Gray, J.A.B.;S. Coombs(ed.);P. Corner(ed.);H. Munz(ed.)
  5. J. exp. Biol. v.60 Pressure distribution on the body surface of swimming fish Dubois, A.B.;Cavagna, G.A.;Fox, R.S.
  6. D.A.F.S. Marine Lab.(UK)Working paper No. 10/88 Some measurements of flow inside codends and a pelagic net Ferro, R.S.T.
  7. Proceedings, World Symposium on Fishing Gear and Fishing Vessel Design Computer simulation of trawl gear shape and loading Ferro, R.S.T.;S.G. Fox(ed.);J. Humtington(ed.)
  8. D.A.F.S. Marine Lab.(UK)Working Paper No. 6/89 Further data on flow in trawls and codends Ferro, R.S.T.;Leaver, I. D.
  9. Scottish Fisheries Information Pamphlet The Marine Laboratory four - panel trawl Galbraith, R.D.
  10. Fish. Res. v.7 Comparison of the reactions of fish to a trawl gear, at high and low light intensities Glass, C.W.;Wardle, C.S.
  11. Biol. Cybern. v.52 Mathematical analysis of the stimulus for the lateral line organ Hassan, El - S.
  12. J. Comp. Physiol A v.159 On the discrimination of spatial intervals by the blind cave fish (Anoptichthys jordani) Hassan, El - S.
  13. Mem. Fac. Fish. Kagoshima Univ. v.23 Studies on the drag net Ⅲ. Current velocity reduction at the inside of the net Higo, N.;Tokunaga, Y.;Fuwa, S.
  14. Mem. Fac. Fish. Kagoshima Univ. v.23 Studies on the Mid Water Trawl - 1. Distribution of flow speed inside the net and performance of the net - shape Imai, T.
  15. J. exp. Biol. v.133 Selective and reversible blocking of the lateral line in freshwater fish Karlsen, H.E.;Sand, O.
  16. PhD. Thesis of the University of Aberdeen Developing a model of fish behaviour to towed fishing gear Kim, Y -H.
  17. Limnol. Oceanogr. v.30 no.3 Water flows produced by Daphnia and Diaptomus : implications for preselection by mechanosensory predators Kirk, K.L.
  18. I.C.E.S.C.M. v.B27 Some results of flow measurements on a full scale pelagic trawl Kroeger, M.
  19. Bull. Sea Fish. Inst. v.130 no.3 Indices of evaluation of trawl codends construction following from the law of flow continuity Moderhak, W.
  20. J. Acoust. Soc. Am. v.89 no.1 Hydrodynamics of the excitation of the cupula in the fish canal lateral line Netten, S.M.
  21. Biol. Cybern. v.52 Computer simulation of an ideal lateral inhibition function Rozsypal, A.J.
  22. Proc. R. Soc. Lond. v.B224 Field and laboratory studies of the feeding behaviour of the piper 'Hyporhamphus ihi', with reference to the role of the lateral line in feeding Saunders, A.J.;Montgomery, J.C.
  23. J. exp. Biol. v.198 Quantitative flow analysis around aquatic animals using laser sheet particle image velocimetry Stamhuis, E.;Videler, J.J.
  24. J. Comp. Physiol. A. v.157 Collision with and avoidance of obstacles by blind cave fish Anoptichthys jordani(Characidae) Teyke, T.
  25. Morsk. Inst. Ryback. Tom 17 Serta B Distribution of speed of water flowing through a trawl Ziembo, Z.
  26. Bull. Sea Fish. Inst. v.20 no.3;4 Factors affecting longitudinal velocity of water flow inside the trawl Ziembo, Z.
  27. Bull. Sea Fish. Inst. v.130 no.3 Turbulent mixing of water flow within trawl walls and method of calculating component force of reaction, parallel to direction of motion Ziembo, Z.