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  • 1
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    First DNA evidence on the occurrence of Pacific bluefin tuna, Thunnus orientalis in northern Philippine waters (2016)
    BioMed Central
    Details
    Publication Date: 2016-05-25
    Electronic ISSN: 1755-2672
    Topics: Biology
    Published by BioMed Central
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    PAPER CURRENT
  • 2
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    Diamondback squid (Tysanoteuthis rhombus) exploration in the South China Sea, Area III: Western Philippines (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26257 | 2002 | 2019-03-01 06:03:04 | 26257 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2021-07-24
    Description: The diamondback squid (Tysanoteuthis rhombus) is a potential resource popularized mainly for the export market in the Central Philippines and the positive results from other experimental activities. Exploratory fishing for the species using the giant squid jig was conducted on board MV SEAFDEC and MV Maya-Maya in the South China Sea (Western Philippines) to determine its occurrence, abundance and distribution in these areas. The gear employed is basically used in small boats hence, its operation on bigger vessels was very difficult. The result was discouraging with only one diamondback squid caught out of the 175 jigs set. The description and fishing operations of the gear are presented with comparison from other research and fishing results conducted in Camotes Sea, Calauag Bay, and Ormoc Bay which are considered potential areas.
    Keywords: Fisheries ; Biological surveys ; Exploratory fishing ; Jigging ; Gear research ; Fishery surveys ; Cephalopod fisheries ; South China Sea ; Philippines ; Tysanoteuthis rhombus
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 32-38
    Format: 7
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  • 3
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    Effects of Net Depth Reduction to Bigeye Tuna (Thunnus obesus) Catch (2021)
    In:  http://aquaticcommons.org/id/eprint/26989 | 25026 | 2020-03-05 01:55:34 | 26989 | National Fisheries Research and Development Institute, Philippines
    Details
    Publication Date: 2021-07-24
    Description: Analysis on the catch of Bigeye tuna (Thunnus obesus) from purse seine and ring nets of various net depths was conducted to assess the effect of reducing net depth as a compatible measure the Philippines has implemented and reducing the catch of Bigeye in its internal waters and the Exclusive Economic Zone (EEZ). The study was based on observer reports from ring net and purse seine fishing vessels operating in internal waters and EEZ as well as from group seine operations in the high seas pocket 1. Nets were classed by depth to determine and compare variations on the catch of Bigeye, catch rates and relative proportion, species composition, and fishing grounds. Results indicated that the catch of Bigeye is correlated with the depth of net, with a significantly higher catch of Bigeye in deeper nets. The result of the study is consistent with other studies elsewhere, and in consonance with the implementation of Fisheries Administrative Order 236 limiting the depth to 115 fathoms for ring net and purse seine operating in Philippine internal waters and the EEZ as a compatible measure to reduce the catch of Bigeye.
    Keywords: Conservation ; Fisheries ; Management ; Policies ; Net depth ; FAO 236 ; Bigeye tuna ; catch reduction ; Fisheries Observers
    Repository Name: AquaDocs
    Type: article , TRUE
    Format: application/pdf
    Format: application/pdf
    Format: 66-71
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  • 4
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    Tuna resource exploration with longline in the South China Sea, Area III: Western Philippines (2021)
    Secretariat, Southeast Asian Fisheries Development Center | Bangkok, Thailand
    In:  http://aquaticcommons.org/id/eprint/26258 | 2002 | 2019-03-01 06:00:19 | 26258 | Southeast Asian Fisheries Development Center, Secretariat
    Details
    Publication Date: 2022-08-02
    Description: An exploratory tuna longline fishing survey was conducted using the research and training vessels of the Southeast Asian Fisheries Development Center, the 1,178 GT MV SEAFDEC and the Bureau of Fisheries and Aquatic Resources, the 165 GT MV MAYA-MAYA in the South China Sea Waters, West of the Philippines from April to May, 1998. A total of 3,796 hooks was set in sixteen (16) fishing stations. There were no tuna caught during the entire survey but only minor and irrelevant species like the Pacific lancetfish, sharks and an opah species, Lampris guttatus. The important fishing and oceanographic factors during the survey and other research results on longline are described and analyzed. Additional longline studies within and near the Philippines territorial waters are also presented to substantiate the research results of the joint SEAFDEC/BFAR resource exploratory.
    Keywords: Fisheries ; Exploratory fishing ; Catch composition ; Fishery surveys ; Longlining ; Tuna fisheries ; South China Sea ; Philippines
    Repository Name: AquaDocs
    Type: book_section
    Format: application/pdf
    Format: application/pdf
    Format: 39-48
    Format: 10
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