Shellfish and Cultivation

New study: 2021 heat wave created ‘perfect storm’ for shellfish die-off

June 23, 2022

Around this time last year, the Pacific Northwest experienced excruciating, record-breaking heat. With funding from Washington Sea Grant, a team led by the University of Washington has compiled and analyzed hundreds of field observations to produce the first comprehensive report of the impacts of the 2021 heat wave on shellfish. The researchers found that many shellfish were victims of a “perfect storm” of factors that contributed to widespread death: The lowest low tides of the year occurred during ...

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2012
Shellfish and Cultivation

 

Zostera japonica regulated as Washington State noxious weed on aquaculture beds permit for chemical control with imazamox

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2000
shellfish and cultivation

 

Eastern softshell clam deposits/death assemblages remain in Grays Harbor south channel, prominent feature alongside oysters and eelgrass (Palacios et al. 2000)

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1965
shellfish and cultivation

 

Japanese oyster drill (Ocinebrellus inornatus) established on several beds in Willapa Bay despite seed inspections at the point of packing in Japan; Eastern oyster drill (Urosalpinx cinerea) also present.

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1930
SHELLFISH AND CULTIVATION

 

Eastern oysters still exist in small numbers in Willapa (Hopkins 1946). 15 growers are importing Pacific oyster seed from Japan (Kincaid 1968).

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1919
SHELLFISH AND CULTIVATION

 

Washington Department of Fisheries identifies excess oysters in reserves to sell; oyster growers successfully halt sale from reserves (WDF 1920, Washington State Fish Commissioner Annual Reports, per Brady Blake). Eastern oyster culture crashed, no causative agent found (Kincaid 1968).

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1913
SHELLFISH AND CULTIVATION

 

Willapa oystermen request that reserves not be open for harvest (WDF 1919, Washington State Fish Commissioner Annual Reports, per Brady Blake).

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