Abstract
The Philippines is a significant producer of tunas globally but has experienced a decline in tuna production in recent years. Thus, efforts to explore and assess new fishing grounds were conducted by the Bureau of Fisheries and Aquatic Resources (BFAR) through M/V DA-BFAR. Assessment of the spawning and nursery grounds of tunas in the country’s EEZ was also undertaken to properly manage and conserve tuna stocks. The said assessment commenced in 2006 and is continuing up to the present. All the data from 2006-2018 were compiled, including the data from collaborative studies with the University of the Philippines-Marine Science Institute and Southeast Asian Fisheries Development Center to create an overall profile of Scombridae’s abundance and distribution larvae in Philippine waters. The study results showed that family Scombridae is most abundant in the Philippine waters along Batanes-Polillo and areas off Eastern Luzon. Species diversity in Philippine waters was considerably high, with about six to eight dominant species. The most dominant species was Thunnus albacares., followed by Thunnus obesus, Auxis spp., Katsuwonus pelamis, unidentified Scombrid larvae, Rastrelliger spp., Thunnus alalunga, and Thunnus tonggol. The Scombridae species are diverse in the West Philippine Sea and Batanes-Polillo waters but not in Davao Oriental-Surigao waters.
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