The Oregon Pink Shrimp Fishery: 1985-1989 Information Report 92-3

Identification Information

Citation

Originator: Stephen A. Jones, Robert W. Hannah, ODFW

Publish Date: 1992

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: Cedric.X.Cooney@odfw.oregon.gov

Description

Abstract: In 1981, the Pacific Fishery Management Council (PFMC) produced a proposed tri-state pink shrimp Pandalus jordani management plan that identified five biological points of concern for evaluating stress on pink shrimp stocks (PMFC 1981 ). These five indicators of potential over-exploitation are: 1. Long-term (3 years) statistically significant increases in average count-per-pound and/or increase in the incidence of high counts-per-pound coupled with equal or increasing fishing effort. 2. Long-term decreasing average age of females and/or increasing numbers of primary females. 3. Long-term trend toward decreasing annual catches with equal or increased effort. 4. Long-term increase in the extent of barren or void areas of formerly productive shrimping grounds. 5. Indication, through sampling, of two year-class failures in a three-year period. Hannah and Jones (1991) analysed data from the pink shrimp fishery for 1966 to 1988 to evaluate changes in the population structure of pink shrimp In relation to the growth of the trawl fishery. Their analysis showed increased size at age after 1978. The increased size at age was concurrent with a large drop in catch per unit of effort indicating density-dependent growth. They also described a trend toward younger mean age at harvest and increasing levels of 1-year-old pink shrimp that are female (primary females), satisfying Number 2 above. The primary objective of this report is to analyze fishery and biological data from the 1985-89 trawl fishery for pink shrimp and to evaluate the evidence of potential over-exploitation as specified In the tri-state management plan. A secondary objective is to update the existing series of summary reports detailing annual catch and effort for 1977 to 1984. We documented trends in the fishery and compared them with those noted prior to 1985. Some California, Washington, British Columbia, and Alaska information is included to add a regional perspective.

Purpose:

Time Period of Content:

Geographic Extent: Oregon

Status: Final

Use Constraints:

Format: PDF File

Data Quality Information

Lineage-Source:

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description: Not yet described

Bibliography Information

Field Name	Value
Biblio ID	338 or (5642 deleted)
Year	1992
Publisher
Request Type	Information & Education
Location	Salem HQ
Date Created
Date Cataloged	6/22/05
Date Published	1992
Type	info repo
Pages	17 pp
Volume	92-3
Status	2
Descriptor	Pink Shrimp; Harvest; Coast, OR
Date Entered	2005-06-22 00:00:00
Location In Clackamas Library	S wall, yellow info reports top row
Author	Stephen A Jones; Robert W Hannah
Duplicates	0
Number Remaining After Requests	27
Presumed All Distributed
Back Room Duplicates
Author	Jones, S.
Risk	Harvest
Species
Disposition Of Requests	StreamNet Library: Request filled
Disposition Of Requests	Jean McCrae - 2: Request filled

Is a physical copy maintained for reference at Headquarters? Yes