Presentation Title

Region 6 (Vashon Island area) Dungeness crab survey

Session Title

Session S-09E: Marine, Freshwater and Terrestrial Species: Threats and Conservation

Conference Track

Species and Food Webs

Conference Name

Salish Sea Ecosystem Conference (2014 : Seattle, Wash.)

Contributing Repository

Digital content made available by University Archives, Heritage Resources, Western Libraries, Western Washington University.

Presenter/Author Information

George StearnsFollow

Start Date

1-5-2014 5:00 PM

End Date

1-5-2014 6:30 PM

Abstract

Results of the first ever comprehensive Dungeness crab (Metacarcinus magister) survey in region 6 (north end of Vashon Island south to Tacoma Narrows bridge) conducted by the Puyallup Tribe are presented. 8 locations in region 6 were used as index stations. 9 commercial style Dungeness traps were set at each station stratified by depth: 3 traps at 50’, 3 traps at 100’, and 3 traps at 150’. Each index station was surveyed 3 different times in 2013. Traps were baited and left in the water for 24 hours. Dungeness crab information collected included size, sex, and shell condition. Bycatch was also recorded. Catches varied, sometimes greatly, between index stations and within the same index station depending on the time of year or depth. A decrease in the number of sunstars (Pycnopodia helianthoides) in the catch was recorded near the same time that widespread sunstar mortalities were reported in the Puget Sound.

Rights

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Language

English

Format

application/pdf

Type

Text

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May 1st, 5:00 PM May 1st, 6:30 PM

Region 6 (Vashon Island area) Dungeness crab survey

Room 6C

Results of the first ever comprehensive Dungeness crab (Metacarcinus magister) survey in region 6 (north end of Vashon Island south to Tacoma Narrows bridge) conducted by the Puyallup Tribe are presented. 8 locations in region 6 were used as index stations. 9 commercial style Dungeness traps were set at each station stratified by depth: 3 traps at 50’, 3 traps at 100’, and 3 traps at 150’. Each index station was surveyed 3 different times in 2013. Traps were baited and left in the water for 24 hours. Dungeness crab information collected included size, sex, and shell condition. Bycatch was also recorded. Catches varied, sometimes greatly, between index stations and within the same index station depending on the time of year or depth. A decrease in the number of sunstars (Pycnopodia helianthoides) in the catch was recorded near the same time that widespread sunstar mortalities were reported in the Puget Sound.