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ISC/26/BILLWG-1

13-19 January 2026 Yokohama, Japan
Report of the Billfish Working Group Workshop

Working Group Working Papers

#01

  • Progress on Japan's Biological Sampling of Three Billfish Species caught in the North Pacific from 2019 to 2025.
  • Ishihara Y., M. Jusup and M. Kai
  • ishihara_yuki13_at_fra.go.jp

#02

  • The progress report on age and growth of striped marlin (Kajikia audax) in the western North Pacific Ocean.
  • Furuyama A., M. Funabara, Y. Arai, Y. Ishihara, M. Kai, and M. Kanaiwa
  • furuyama_at_bio.mie-u.ac.jp

#03

  • Protocol for sharing genetic samples of Striped Marlin collected by Japan, Taiwan, and the United States to elucidate stock structure and dynamics in the North Pacific Ocean.
  • Bober J., M. Sekino, Y. Nakamura, M. Yasuike, Y. Ishihara and M. Kai
  • johanna_bober39_at_fra.go.jp

#04

  • Progress report on the histological analysis of gonads for estimating the maturity schedule of swordfish Xiphias gladius caught in the North Pacific.
  • Ashida H., Y. Ishihara, M. Kinney, K. Dahl, Y.-J. Chang, Z.-W. Yeh, and M. Kai
  • ashida_hiroshi35_at_fra.go.jp

#05

  • Natural Mortality Rates for the Pacific Blue Marlin Stock.
  • Brodziak J.
  • Jon.Brodziak_at_NOAA.GOV

#06

  • Update of the Japanese longline abundance index for Pacific blue marlin (Makaira nigricans) using the habitat model (1994-2024).
  • Jusup M. and M. Kai
  • jusup_marko00_at_fra.go.jp

#07

  • CPUE standardization of blue marlin (Makaira nigricans) for the Taiwanese distant‐water tuna longline fishery in the Pacific Ocean during 1971 - 2024.
  • Yeh Z.-W. and Y.-J. Chang
  • yjchang_at_ntu.edu.tw

#08

  • Standardization of Pacific Blue Marlin Catch Per Unit Effort in the Hawaii Longline Fishery from 1995-2024.
  • Sculley M.
  • michelle.sculley_at_noaa.gov

#09

  • Update of the Japanese catch and length-frequency data for Pacific blue marlin (Makaira nigricans) from 1971 to 2024.
  • Jusup M. and M. Kai
  • jusup_marko00_at_fra.go.jp

#10

  • Blue marlin (Makaira nigricans) catch and size data of Taiwanese fisheries in the Pacific Ocean.
  • Yeh Z.-W. and Y. J. Chang
  • yjchang_at_ntu.edu.tw

#11

  • Summary of US Catch and Size of Pacific Blue Marlin.
  • Sculley M.
  • michelle.sculley_at_noaa.gov