STATUS OF THE OLYMPIA OYSTER, OSTREA LURIDA CARPENTER 1864, IN BRITISH COLUMBIA, CANADA

被引:19
作者
Gillespie, Graham E. [1 ]
机构
[1] Fisheries & Oceans Canada, Pacific Biol Stn, Nanaimo, BC V9T 6N7, Canada
关键词
Ostrea lurida; Olympia oyster; distribution; demographics; British Columbia; Canada; COPEPOD MYTILICOLA-ORIENTALIS; CRASSOSTREA-GIGAS;
D O I
10.2983/035.028.0112
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The Olympia oyster, Ostrea lurida Carpenter 1864,dagger is the only oyster native to British Columbia. Once the focus of,it fishery, they have not been commercially harvested since the 1930s because of stock declines and it shift in focus to nonindigenous oysters. Olympia oysters were reported from Juan de Fuca Strait, Strait of Georgia, West Coast Vancouver Island, Queen Charlotte Strait and North Coast areas to approximately 52 degrees 13' N. They were only characterized as abundant at sites ill the North Coast and West Coast Vancouver Island, Systematic quantitative sampling has not been undertaken in BC bill the few sites surveyed had estimated densities higher than others in the literature. Biological sampling was also rare ill BC, and size distributions suggest that regular, low level recruitment occurs at some sites. The low incidence of brooding oysters is likely an artifact of sampling too soon in the reproductive season. Olympia oysters were listed as special concern species by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) in 2000 and under the Canadian Species At Risk Act (SARA) in 2003. Some measures, have been taken to protect Olympia oysters from further decline: no commercial fishery exists or is contemplated at this time, the bag limit ill the recreational fishery was reduced to zero in 2007, regulations are in place and proposed that will prohibit the use of tributyltin antifouling paints in Canada and basic protection is afforded within Federal And Provincial parks. A management plan is required under SARA by June 2008.
引用
收藏
页码:59 / 68
页数:10
相关论文
共 85 条
[1]   Tributyltin: case study of a chronic contaminant in the coastal environment [J].
Alzieu, C .
OCEAN & COASTAL MANAGEMENT, 1998, 40 (01) :23-36
[2]  
[Anonymous], 1988, CAN B FISH AQUAT SCI
[3]  
*ARCH MAR RES LTD, 2000, SUBTIDAL SURVEY PHYS
[4]  
Baker P, 1995, J SHELLFISH RES, V14, P501
[5]  
BAKER P, 1999, MARINE BIOINVASIONS, P221
[6]  
BARRETT EM, 1963, CALIF DEPT FISH GAME, V123
[7]   PARASITIC COPEPOD MYTILICOLA ORIENTALIS IN BRITISH COLUMBIA BIVALVES [J].
BERNARD, FR .
JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1969, 26 (01) :190-&
[8]  
BERNARD FR, 1968, FISH RES BOARD CAN M, V993
[9]  
BERNARD FR, 1983, CAN SPEC PUBL FISH A, V61
[10]  
BLYTH CA, 1998, SHELLFISH AQUA UNPUB