한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)
- 제18권3호
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- Pages.235-242
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- 1985
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- 0374-8111(pISSN)
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- 2287-8815(eISSN)
망지에 대한 징거미 새우(Macrobachium nipponense)의 보행운동
The Gaiting Behaviour of the Shrimp Macrobrachium nipponense on the Nettings
- KIM Yong-Hae (Department of Fishing Technology, National Fisheries University of Pusan) ;
- KO Kwan-Soh (Department of Fishing Technology, National Fisheries University of Pusan)
- 발행 : 1985.05.01
초록
망지에 대한 새우의 보행운동은 통발이나 자망 등 그물어구에 어획되는 메카니즘을 규명하고 어구를 개량하는데 기본적인 필수요인이 될 것이다. 여기서는 김해 낙동강 지류에서 채집한 갑장
The mechanics of the walking shrimps is useful to clarify the fishing mechanisms in relation to the fishing gears. The gaiting behaviour concerning step positions and step timings on the flat board and the nettings, 16, 23 and 37mm in mesh size were experimented in the aquarium using video camera from June to October, 1984. It was found that the irregular movements of walking legs in step positions and step patterns were appeared on the nettings more than the flat surface due to the absence of mechanical contact with the substrates. The mean stride length and coefficient of variation of the periods in the walking shrimps on the flat board were significantly different from those values on the nettings, However, the velocity, the period and the ratio of forestroke to backstroke were unsteadily changed with the carapace length, and showed little difference under the four conditions. The mean phase difference on the flat board was greater than those values on the nettings which were decreased, while standard deviation on the flat board was smaller than those values on the nettings which were increased with increasing in mesh size.
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