Ledhyane Ika Harlyan1,2, Takashi Fritz Matsuishi3* and Mohammad Faisal Md Saleh4
1Faculty of Fisheries and Marine Science Brawijaya University, Malang, Indonesia
2Graduate School of Fisheries Sciences, Hokkaido University, Hakodate, Japan
3Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Japan
4Marine Fishery Resources Development and Management Department, Southeast Asian Fisheries Development Center (MFRDMD/SEAFDEC), Chendering Fisheries Garden, Kuala Terengganu, Malaysia
MATSUISHI Takashi Fritz ,
Faculty of Fisheries Sciences, Hokkaido University,
3-1-1 Minato, Hakodate, Hokkaido 041-8611, Japan.
Malaysian fisheries employ multiple measures to improve management; however, not all are well-suited to the multispecies fisheries. As part of a pilot project, an individual quota system was introduced for the purse-seine fishery off the East Coast of Peninsular Malaysia (ECPM), but no assessment of this particular measure nor the feasibly of its implementation has been confirmed. Therefore, this study analysed spatial and temporal patterns of purse-seine fishing, by collecting catch composition data per landing and its fishing ground within three period fishery surveys between August 2017 and September 2018 at six different landing sites. Similarity and cluster analysis examined species composition and diversity to determine the feasibility of implementing a single-species quota system in this multispecies fishery. Some overlapped of indices results and minor differences in catch composition were found due to changes in spatial and temporal fishing activities. However, no specific spatial or temporal patterns were discernible as structuring the fishing grounds used by purse-seiners. The absence of patterns, using the available data, might be attributable to huge species aggregations and widely distributed and homogenously mixed fish stocks. Thus, it is likely impractical to manage species individually in such a multispecies fishery.
Keywords: fisheries management, mixed-stock fishery, spatial and temporal distribution, species aggregation, species composition, species diversity