CPUE in four types of traps: hokkaido, funnel net, opera house and cylindrical for catching Crayfish (Astacus leptodactylus) in culture ponds

Document Type : Animal environment

Authors

1 Department of Fisheries, Faculty of Marine Science and Technology, Hormozgan University, Bandar Abbas, Iran

2 National Inland Water Aquaculture Institute, National Institute of Fisheries Research, Agricultural Research and Training Organization, Bandar Anzali, Iran

Abstract

This research was carried out to investigate the amount of CPUE for Astacus leptodactylus released in culture pools located in Hossein Kooh Shulam, belonging to the National Aquatic Research Center of Guilan province. Four types of traps including hokkaido, funnel net, opera House and cylindrical with mesh size of 8 mm were designed and built according to the biologic and ecologic characteristics of Crayfish in three culture ponds. Four traps of each type were used in ponds. The traps were connected longitudinal and continuously, and were monitored every 24 hours. The sampling period was 60 days. In total, 2002 Crayfish were caught of which, 986 were male and 1016 were female. The sex ratio (Male: Female) was calculated as 1: 1.3. The highest abundance percentage of caught fish was found in funnel net with 9.88% in the length class of 88-100 mm. The rate of CPUE for hokkaido, funnel net, opera house and cylindrical traps was 3.63, 2.43, 1.6 and 0.7, respectively that showed significant differences (p <0.05). According to the results, hokkaido trap had the best performance in terms of both CPUE and catching fish size in different length classes.

Keywords

References

  1. Aksu, O. and Harlıoğlu, M., 2015. Types of crayfish shelters and shelter usage. Int. J. Pure Appl. Sci. Vol. 1, pp: 53-63. (Turkish)
  2. Balık, I.; Özkök, E. and Özkök, R., 2002. Catch per Unit Effort and Size Composition of Crayfish, Astacus leptodactylus Eschscholtz 1823, in Lake İznik. Asian Australasian Journal of Animal Sciences. Vol. 15, No. 6, pp: 884-889.
  3. Demirol, F.; Yuksel, F.; Gunduz, F.; Beri, A.; Guler, M.; Yildirim, T. and Zulfu Coban, M., 2017. The Stock Assessment of Crayfish (Astacus leptodactylus Eschscholtz, 1823) in the Keban Dam Lake. Turkish Journal of Fisheries and Aquatic Sciences. Vol. 17, pp: 1373-1380.
  4. Holdich, D.M., 2002. Background and functional morphology. In: Holdich, D.M., (Eds.), Biology of freshwater crayfish. MPG Books Ltd, Bodmin, Cornwall, Great Britain. pp: 3-29.
  5. Karimpour, M.; Harlioglu, M. and Aksu, O., 2011. Status of freshwater crayfish (Astacus leptodactylus) in Iran. Knowledge and Management of Aquatic Ecosystems. Vol. 401, 18 p.
  6. Khanipour, A.A. and Melnikov, V.N., 2007. Determination of suitable trap type for the Caspian Sea crayfish, Astacus leptodactylus eichwaldi, in Anzali coastal area, Iran. Iranian Journal of Fisheries Sciences. Vol. 6, No. 2, pp: 59-76.
  7. Lorry, R., 1988. Growth, moulting and reproduction. Freshwater crayfish: biology, management and exploitation. pp: 83-113.
  8. Paillisson, J.M.; Soudieux, A. and Damien, J.P., 2011. Capture efficiency and size selectivity of sampling gears targeting red-swamp crayfish in several freshwater habitats. Knowl. Managt. Aquatic Ecosyst. Vol. 401, No. 6.
  9. Miller, J.R., 1990. Effectiveness of Crab and Lobster Traps. Canadian Journal of Fisheries and Aquatic Sciences. Vol. 47, No. 6, pp: 1228-1251.
  10. Skurdal, J. and Taugbol, T., 2002. Astacus in biology of freshwater crayfish (ed: Holdisch). Blackwell sciences, Londan, UK. pp: 467-503.
  11. Sturges, H.A., 1926. The Choice of a Class Interval. Journal of the American Statistical Association. Vol. 21, pp: 65-66.
  12. White, T.F., 1987. A Fisheries monitoring system for the Islamic Republic of Iran. IRA/83/013. FAO, Rome, Italy. 56 P.
  13. Yüksel, F.; Demirol, F. and Gündüz. F., 2013. Leslie Population Estimation for Turkish Crayfish (Astacus leptodactylus Esch., 1823) in the Keban Dam Lake, Turkey. Turkish Journal of Fisheries and Aquatic Sciences. Vol. 13, pp: 835-839.
Journal of Animal Environment
Volume 11, Issue 3
October 2019
Pages 287-292

Files

Share

How to cite

Statistics