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SC/69B/ASI/01
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Resource ID
22003
Access
Open
Document Number
SC/69B/ASI/01
Full Title
Research plan for Japans dedicated cetacean sighting surveys in the North Pacific Ocean in summer 2024
Author
Takashi Hakamada, Megumi Takahashi, Taiki Katsumata, Tatsuya Isoda And Koji Matsuoka
Authors Summary
The document outlined Japans plan for a systematic vessel-based sighting survey in the North Pacific in 2024 to estimate the abundance of large whale species in the North Pacific Ocean for management and conservation purposes. The survey will be conducted from late July to early October 2024, and will cover the area comprised between 35øN-52øN, 153ø30E-170øE excluding foreign Exclusive Economic Zone (EEZ). Distance and angle estimations, photo-ID, biopsy and satellite tagging experiments will be conducted. A systematic vessel-based sighting survey in the North Pacific is also planned in 2025 summer under the same protocols and procedures as the previous years.
Publisher
IWC
Publication Year
2024
Abstract
This document outlines the plan for a systematic vessel-based sighting survey in the North Pacific in the summer 2024. The main objective of this survey is to attain the sighting data required to estimate the abundance of large whale species in the North Pacific Ocean. The survey will be conducted using the research vessels Yushin-Maru (YS1) and Kaiyo-Maru No. 7 (KY7) from late July to early October 2024, and will cover the area comprised between 35øN-52øN, 153ø30E-170øE excluding foreign Exclusive Economic Zone (EEZ). For more precise abundance estimation of whales, distance and angle estimation experiments will be conducted. Furthermore, photo-identification experiments on blue, North Pacific right, humpback and killer whales will be collected on an opportunistic basis. Biopsy skin samples of large whale species such as blue, fin, sei, North Pacific right, humpback and killer whales and satellite tagging experiments for fin, sei, common minke and Brydes whales will be also conducted. Data and samples obtained during these experiments will be used in future studies on distribution, abundance, movement and stock structure of the species involved, required for assessment and management purposes.