Changing of Sea Surface Temperature Affects Catch of Spanish Mackerel Scomberomorus Commerson in the Set-Net Fishery

摘要

This paper reviews the Spanish mackerel Scomberomorus commerson landing status of the set-net fishery andchanging sea surface temperature (SST) in Nha Trang city, Vietnam in the 12th year period. The observation of bothcatch and individual weight showed a general trend of declining between 2005 and 2016. Catch yield of set-netfishery significantly depended on season and moon phase resulting from highest harvesting in April and May, as wellas in the new moon and last quarter of phases. SST in the Nha Trang bay was significant increase of 0.0520C peryear, while the catch and SST were also significantly related, with a negative parameter of slope. Results fromGeneral Linear Model using Bayesian Model Average showed that the moon phase, year and SST factors explainedthe variation in catch of Spanish mackerel.Keywords