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Accession Number PB2013-106497
Title Report of the National Marine Fisheries Service Gray Whale Stock Identification Workshop.
Publication Date Mar 2013
Media Count 62p
Personal Author B. L. Taylor D. W. Weller J. E. Moore J. L. Laake P. E. Rosel P. R. Wade R. L. Brownell S. Bettridge
Abstract NMFS presently recognizes a single stock of gray whales (Eschrichtius robustus) in U.S. waters that is referred to as the eastern North Pacific (ENP) stock (Carretta et al. 2013). New information, however, suggests the possibility of recognizing two additional stocks of gray whales in U.S. waters, including: (1) the Pacific Coast Feeding Group (PCFG) - defined as whales observed between 1 June to 30 November within the region between northern California and northern Vancouver Island (from 41 degrees N to 52 degrees N) and photo-identified within this area during two or more years (see section 3.3), and (2) western North Pacific (WNP) gray whales - defined as whales observed feeding during summer and fall off Sakhalin Island, Russia, and other areas in the WNP (see section 3.2). The main objective of the TF was to provide scientific advice regarding gray whale stock structure using the definitions given in the GAMMS guidelines (NMFS 2005; see also Moore and Merrick 2011). More specifically, the TF was convened to provide advice on two questions: (1) Is the PCFG a 'population stock' under the MMPA and GAMMS guidelines, and (2) Is the WNP stock a 'population stock' under the MMPA and GAMMS guidelines. Both of these questions have immediate management implications, including: (1) how future NMFS stock assessment reports (SAR) will address gray whale stock structure in the North Pacific, and (2) how to interpret any new information in the context of the Makah Indian Tribe's MMPA waiver request to resume hunting gray whales off Washington State, USA.
Keywords Fish populations
Fish stocking
Gray whale
Marine fisheries
Natural resource management
Pacific Ocean

Source Agency National Oceanic and Atmospheric Administration
National Marine Fisheries Service
NTIS Subject Category 47D - Biological Oceanography
57Z - Zoology
Corporate Author National Marine Fisheries Service, La Jolla, CA. Southwest Fisheries Science Center.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1314
Contract Number N/A

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