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An Experimental Device for Measuring Egg Density and Adaptation under Laboratory Conditions

어류 수정란(egg) 밀도 측정 장치 개발 및 적용

  • Park, Jong Won (Department of Marine Bioscience, Gangneung-Wonju National University) ;
  • Jung, Hae Kun (Department of Marine Bioscience, Gangneung-Wonju National University) ;
  • Park, Joo Myun (Department of Marine Bioscience, Gangneung-Wonju National University) ;
  • Park, Heum-Gi (Department of Marine Bioscience, Gangneung-Wonju National University) ;
  • Lee, Chung Il (Department of Marine Bioscience, Gangneung-Wonju National University)
  • 박종원 (강릉원주대학교 해양자원육성학과) ;
  • 정해근 (강릉원주대학교 해양자원육성학과) ;
  • 박주면 (강릉원주대학교 해양자원육성학과) ;
  • 박흠기 (강릉원주대학교 해양자원육성학과) ;
  • 이충일 (강릉원주대학교 해양자원육성학과)
  • Received : 2018.05.04
  • Accepted : 2018.07.27
  • Published : 2018.09.30

Abstract

Information about the density of fish eggs is important to understand the vertical distribution of eggs and survival in early stage, in particular change in egg density is one of major issue in fisheries. This paper describes a practical application of an experimental system for measurement of the fish egg density under laboratory conditions. The device can control the temperature range in each water column, and make different densities at each layer. The density of olive flounder (Paralichthys olivaceus) eggs have ranged from 1,018.49 to $1,020.93kg/m^3$ and were aggregated around the density of $1,020kg/m^3$. The results show that the device is applicable for measuring the fish egg density under laboratory conditions.

Keywords

Water temperature;Density float;Stratification;Olive flounder

Acknowledgement

Grant : MICT기반 명태 수산자원 회복.관리기술 개발

Supported by : 해양수산과학기술진흥원

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