Fishing Performance of an Octopus minor Net Pot Made of Biodegradable Twines

Year 2014, Volume: 14 Issue: 1, - , 07.07.2014

Seonghun Kim Seongwook Park Kyounghoon Lee

https://doi.org/10.4194/1303-2712-v14_1_03

Abstract

Gillnets and net pots are made of synthetic fiber as polyester (PE) and polyamide (PA). These are often lost by heavy weather or trawling of the active fishing gears. Lost gears result in the ghost fishing because these are non-degradable in seawater and damage to spawning grounds or habitats. To address these problems, biodegradable nets composed of aliphatic polyester were developed. This study describes four types of biodegradable net pots for capturing Octopus minor in Southern Korea, which is an area associated with high rates of net pot loss. The fishing performance of the biodegradable pots was compared to that of commercial net pots. The net pot with a synthetic body and biodegradable funnel (PE/Bio) produced approximately 50% of the catch collected using a commercial net pot (PE/PA). Conversely, net pots with a biodegradable body and a synthetic funnel (Bio/PA) produced the same amount of catch as the commercial net pot. The completely biodegradable net pot (Bio/Bio) caught 60% of that using the commercial net pot. These findings suggest that net pots consisting of a biodegradable body and PA funnel may be effective in capturing Octopus minor. Partially biodegradable net pots (Bio/PA) are as effective as commercial net pots, yet uniquely allows a method of capturing Octopus minor without affecting the marine environment.

Keywords

Octopus minor, fishing, Southern Korea, gillnets

References

• An, H.C., Lee, K.H., Park, S.W., Park, C.D. and Shin, J.K. 200 Assessment of fishing power of common octopus (Octopus minor) pot fishery. Journal of the Korean society of Fisheries Technology, 43: 176-182. doi: 3796/KSFT.2007.43.3.176;
• Andres, V.B. and Garrother, P.J.G. 1964. Test methods for fishing materials: Modern fishing gear of the world, 2 nd edition, Fishing News Books Ltd Press, New York, 49 pp.
• Ayaz, A., Acarli, D., Altinagac, U., Ozekinci, U., Kara, A. and Ozen, A. 2006. Ghost fishing by monofilament and multifilament gillnets in Izmir bay, Turkey. Fisheries Research, 79: 267-2 doi: 1016/j.fishres.2006.03.029;
• Bhari, K., Mitomo, H., Enjoji, T., Yoshii, F. and Makuuchi, K. 1998. Radiation cross linked poly (butylene succinate) foam and its biodegradation. Polymer
• Degradation and Stability, 62:551-557. doi: 1016/S0141-3910(98)00041-X;
• Brown, J. and Macfadyen, G. 2007. Ghost fishing in European waters: impacts and management responses. Marine Policy, 31: 488-504. doi: 1016/j.marpol.2006.10.007;
• Chang, D.J. and Kim, D.A. 2003. Characteristics by the behavior and habits of the common octopus (Octopus minor). Journal of the Korean society of Fisheries Technology, 36:735-742. doi: 5657/kfas.2003.36.6.735;
• Cohre, A.L. 1973. An ultrastructural analysis of the photoreceptors of the squid and their synaptic connections, photoreceptive and non-synaptic regions of the retina. Journal of Comparative Neurology, 147:351-378. doi: 10.1002/cne.901470304;
• Fiorito, G. and Gherardi, F. 1999. Prey-handling behavior of Octopus vulgaris (Mollusca, Cephalopoda) on bivalve preys. Behavioural Processes, 46:75-88. doi: 1016/S0376-6357(99)00020-0;
• Fujimaki, T. 1998. Processability and properties of aliphatic polyester BIONOLLE synthesized by polycondensation reaction. Polymer Degradation and Stability, 59: 209-2 doi: 1016/S01413910(97)00220-6;
• Ishii, N., Inoue, Y., Tagaya, T., Mitomo, H., Nagai, D. and Kasuya, K. 2008. Isolation and characterization of poly(butylene succinate)-degrading fungi. Polymer Degradation and Stability, 93: 883-888. doi: 1016/j.polymdegradstab.2008.02.005;
• Kang, H.J., Park, T.W., Kim, Y.J. and Lee, Y.R. 1996. Biodegradable aliphatic polyester(I), synthesis and physical properties of copolyesterethylene. Polymer Korea, 20: 682-690.
• Kasuya, K., Abe, H., Koyama, N., Ishiwatara, S. and Takagi, K. 1996. Evaluation of biodegradabilities of biosynthetic and chemosynthetic polyesters in river water. Polymer Degradation and Stability, 51:2812 doi: 10.1016/0141-3910(95)00178-6;
• Kim, S.M., Im, S.S. and Choi, Y.U. 1996. Preparation and properties of biodegradation starch graft copolymer. Polymer Korea, 20 :949-959.
• Matsuoka, T., Nakashima, T. and Nagasawa, N. 2005. A review of ghost fishing: scientific approaches to evaluation and solutions. Fisheries Science, 71: 69170 doi: 10.1111/j.1444-2906.2005.01019.x;
• MIFAFF. 2012. Food, Agriculture, Forestry and Fisheries statistical yearbook, Ministry for Food, Agriculture, Forestry and Fisheries (MIFAFF) Press, Seoul, 338 pp.
• Park, S.W., Kim, S.H., Choi, H.S. and Cho, H.H. 2010. Preparation and physical properties of biodegradable polybutylene succinate/polybutyleneadipate-coterephthalate blend monofilament by melt spinning. Journal of the Korean society of Fisheries Technology, 46: 257-264. doi: 3796/KSFT.2010.46.3.257;
• Park, S.W., Kim, H.Y. and Cho, S.K. 2006. Entering behavior and fishing efficiency of common octopus, Octopus minor to cylindric pot. Journal of the Korean society of Fisheries Technology, 42: 11-18. doi: 3796/KSFT.2006.42.1.011
• Qiu, Z., Komura, M., Ikehara, T. and Nishi, T. 2003. Miscibility and crystallization behavior of biodegradation blends of two aliphatic polysters, poly(butylene succinate) and poly(ε caprolactone). Polymer, 44: 7749-7756. doi: 1016/j.polymer.2003.09.029;
• Rantze, E., Kleeberg, I., Witt, U., Müller, R.J. and Deckwer, W.D. 1998. Aromatic components in copolyesters: model structures help to understand biodegradability. Macromolecular Symposia, 130: 319-3 doi: 1002/masy.19981300127;
• Sobrino, I., Juarez, A., Rey, J., Romero, Z. and Baro, J 20 Description of the clay pot fishery in the Gulf of Cadiz (SW Spain) for Octopus vulgaris: selectivity and exploitation pattern. Fisheries Science, 108: 2832 doi: 10.1016/j.fishres.2010.12.022;
• Tokiwa, Y., Calabia, B.P., Ugwu, C.U. and Aiba, S. 2009. Biodegradability of plastics. International Journal of Molecular Sciences, 10: 3722-3742. doi: 3390/ijms10093722;
• Tschernij, V. and Larsson, P.O. 2003. Ghost fishing by lost cod gill nets in the Baltic sea. Fisheries Research, 64:151-162. doi: 10.1016/S0165-7836(03)00214-5;
• Uwe, W., Rolf-Joachim, M. and Wolf-Dieter, D. 1995. New biodegradable polyester-copolymers from commodity chemicals with favorable use properties. Journal of Environmental Polymer Degradation, 3: 215-223. doi: 1007/BF02068676;
• Well, M.J. and Well, J. 1957. The function of the brain of octopus in tactile discrimination. The Journal of Experimental Biology, 34:131–142.
• Well, M.J. 1963. The orientation of Octopus. Ergebnisse der Biologie / Advances in Biology, 26: 40-54. doi: 1007/978-3-642-99872-0_5;
• Witt, U., Müller, R.J. and Deckwer, W.D. 1996. Studies on sequence distribution of aliphatic/aromatic copolyesters by high-resolution 13
• C nuclear magnetic resonance spectroscopy for evaluation of biodegradability. Macromolecular Symposia, 197: 1525-1535. doi: 10.1002/macp.1996.021970428;
• Witt, U., Müller, R.J. and Deckwer, W.D. 1997. Biodegradation behavior and material properties of aliphatic/aromatic polyesters of commercial importance. Journal of Environmental Polymer Degradation, 5: 81-89. doi: 10.1007/BF02763591;