Status of tuna resources in the Zambales Coast / Romina V. Yutuc, Jenelyn Y. Vallejo and Rachelle R. Mendoza

By:

Yutuc, Romina V

Contributor(s):

Material type: Article

ArticlePublisher: Quezon City, Philippines : Bureau of Fisheries and Aquatic Resources , 2018Content type:

text

Media type:

computer

Carrier type:

online resource

ISSN:

2672-2836 (Online)

Subject(s):

In: Philippines. The Philippine Journal of Fisheries Volume 25, Issue no. 1 (January - June 2018), page 25 - 33Abstract: This study aimed to generate and assess the 10-year (2003-2012) data on estimated annual yield of tuna, the catch per unit effort (CPUE) of dominant fishing gears, catch composition, seasonality, and size composition of tuna species in Zambales Coast. This is in support to the implementation of the National Tuna Management Plan. Results were based on the landed catch recorded at the identified sampling site in major fish landing centers in Zambales. The tuna catch in Zambales showed an increasing trend from 2005 to 2011,the highest catch was observed in 2011 with 12,968 MT. The major tuna fishing gears observed in the area were purse seine, multiple handline, and ring net. The CPUE of the three dominant tuna fishing gears showed that purse seine, a commercial fishing gear, has the highest average CPUE with 1,678.52 kg/day, followed by ring net with 222.07 kg/day, and multiple handline, which is a municipal fishing gear, with 62.94 kg/day. There were eight species of tuna being caught in Zambales Coast. The most dominant species caught were skipjack tuna (Katsuwonus pelamis), followed by yellowfin tuna (Thunnus albacares), and bigeye tuna (Thunnus obesus). The monthly seasonal distribution of the three dominant tuna species was also assessed. Peak in the catch of Katsuwonus pelamis was recorded in the first quarter of the year. For Thunnus albacares, the highest catch was observed during the second and third quarter. The bulk of catch for Thunnus obesus appeared on every first and second quarter of the year. All of these species were observed to have almost consistent production in the remaining quarters of every year. Data on size composition of tuna revealed that most of the tuna species landed in Zambales were caught before they reach the length at first maturity. Among species caught, Thunnus albacares and Thunnus obesus recorded the highest percentage of small tuna.

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Holdings
Item type	Current library	Collection	Call number	Vol info	Status	Date due	Barcode
Journal Article	NFRDI Central Office NFRDI KMRC Indexed Materials Collection	Electronic		Volume 25, Issue no. 1 (January - June 2018), page 25 - 33	Available		IMC000185
Journal	NFRDI Central Office NFRDI KMRC Institutional Repository Collection	Electronic	SH 1 .B9524 2018 vol. 25 no. 1 (Browse shelf(Opens below))	Volume 25, No. 1 (January - June 2018)	Available		IRC00033

Includes bibliographical references

This study aimed to generate and assess the 10-year (2003-2012) data on estimated annual yield of tuna, the catch per unit effort (CPUE) of dominant fishing gears, catch composition, seasonality, and size composition of tuna species in Zambales Coast. This is in support to the implementation of the National Tuna Management Plan. Results were based on the landed catch recorded at the identified sampling site in major fish landing centers in Zambales. The tuna catch in Zambales showed an increasing trend from 2005 to 2011,the highest catch was observed in 2011 with 12,968 MT. The major tuna fishing gears observed in the area were purse seine, multiple handline, and ring net. The CPUE of the three dominant tuna fishing gears showed that purse seine, a commercial fishing gear, has the highest average CPUE with 1,678.52 kg/day, followed by ring net with 222.07 kg/day, and multiple handline, which is a municipal fishing gear, with 62.94 kg/day. There were eight species of tuna being caught in Zambales Coast. The most dominant species caught were skipjack tuna (Katsuwonus pelamis), followed by yellowfin tuna (Thunnus albacares), and bigeye tuna (Thunnus obesus). The monthly seasonal distribution of the three dominant tuna species was also assessed. Peak in the catch of Katsuwonus pelamis was recorded in the first quarter of the year. For Thunnus albacares, the highest catch was observed during the second and third quarter. The bulk of catch for Thunnus obesus appeared on every first and second quarter of the year. All of these species were observed to have almost consistent production in the remaining quarters of every year. Data on size composition of tuna revealed that most of the tuna species landed in Zambales were caught before they reach the length at first maturity. Among species caught, Thunnus albacares and Thunnus obesus recorded the highest percentage of small tuna.

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