Investigation of the Abundance and Benthic Distribution of Pink Shrimp (Pandalus Jordani) Off the Northern Oregon Coast, Final Report July 1, 1969 to June 30, 1970

Identification Information

Citation

Originator: Lukas, Gerald and Michael Hosie

Publish Date: July 1973

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: On July 1, 1969, the Fish Commission of Oregon, under contract by the Bureau of Commercial Fisheries, began a 1-year study of the pink shrimp (Pandalus jordani Rathbun) off Tillamook Head, Oregon. Our primary goal was to determine the seasonal movement of this species within a given area. The range of P. jordani extends from southern California to Alaska, with the largest commercial concentrations off the Oregon coast. Dahlstrom (1970) presents a detailed synopsis of the biological data on pink shrimp. A summary of the life history of pink shrimp off Oregon is described by Magill and Erho (1963). Little is known of the specific movement of this species of shrimp off Oregon. Dahlstrom (1970) mentions that populations of pink shrimp (presumably off California) appear to make only local movements apparently associated with the search for food with no migration of great distance involved. He states that males tend to occur in shallower water than females during the first 6 months of each year and in the latter half of the year the sexes are mixed. Dahlstrom also states that juveniles (assumed to be 0-age shrimp) are usually in shallower water than adults. He reports that females off California do make a winter spawning migration.

Purpose: To reach our goal of describing these movements, we had several objectives. 1. Determine benthic movements of pink shrimp in the area off Tillamook Head, Oregon by sampling at approximately monthly intervals for 1 year at stations arranged in a grid pattern. a. Analyze the abundance of shrimp based on sampling in pounds and numbers to determine if there is a pattern of movement. b. Analyze the age and sex composition of the samples to determine if there is a pattern of movement by any specific sex or age class. 2. Determine the location of 0-age shrimp to establish if: a. They move into the area from a specific direction indicating migration from a nursery area or: b. If they are interspersed among the adult population. A second goal developed during the course of the study. This was to establish the effect of light intensity and the density of shrimp on their vertical distribution during the daytime.

Time Period of Content: 1969-1970

Geographic Extent: Oregon Coast

Status: Final

Use Constraints:

Format: PDF

Data Quality Information

Lineage-Source: U.S. Department of Interior, Fish and Wildlife Service, Bureau of Commercial Fisheries, Commercial Fisheries Research and Development Act, Project 1-3-R-5, Contract No. 14-17-0001-2134.

Data Information

No data information was supplied.

Entity and Attribute Information

Attributes Description: Field attribute information is available in the attached file(s).

Bibliography Information

Field Name	Value
Biblio ID	1041
Year	1973
Publisher
Request Type	Report (FCO Shellfish Pgm)
Location	Northern Or Coast
Date Created
Date Cataloged
Date Published	1973
Type
Pages	1-45
Volume
Status	0
Descriptor	Pink Shrimp; Northern Or Coast
Date Entered	1/1/1999
Location In Clackamas Library
Author
Duplicates
Number Remaining After Requests
Presumed All Distributed
Back Room Duplicates
Author	Hosie, M.J.; Lukas, G.T.
Risk
Species
Disposition Of Requests	Jean McCrae: Requested, but no copies available
Disposition Of Requests	Tony D'Andrea: Requested, but no copies available

Is a physical copy maintained for reference at Headquarters? Yes