Study on the Vertical Distribution and Movement of Pink Shrimp, Pandalus jordani, in the Pacific Ocean off Oregon, Progress Report July 1, 1967 - June 30, 1968

Identification Information

Citation

Originator: Milburn, Gary and Jack G. Robinson

Publish Date: 1968

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: Research cruises were made between August 28, 1967, and June 19, 1968, to study the vertical distribution and movements of pink shrimp, Pandalus jordani, off Tillamook Head in 68-80 fathoms. Shrimp traps suspended from surface to bottom, midwater trawl, and bottom shrimp trawl nets were used. Results are discussed in general terms and problems encountered are described. Shrimp were found to migrate off bottom rapidly at night. No apparent correlation between moon phase and migration was indicated. Data on moon phase-migration pattern are limited, however, due to weather and/or cloudy conditions. Seasonal differences in vertical migration in the study area (sex composition and height of migration) were indicated, probably due to (1) sex segregation and (2) presence or absence of thermocline. Few shrimp were caught in pots during May and June 1968, possibly due to a change in feeding habits. Differences in sex composition of catches in pots and midwater trawl indicate the pots are probably biased toward catching females. These data await detailed analysis. Results will appear in a final report on this study next year.

Purpose:

Time Period of Content: July 1, 1967 - June 30, 1968

Geographic Extent: Area off of Tillamook Head

Status: Final

Use Constraints:

Format: PDF

Data Quality Information

Lineage-Source: Commercial Fisheries Research and Development Act U.S. Department of the Interior Fish and Wildlife Service Bureau of Commercial Fisheries Sub-project No. 1-3-R-3 Contract No. 14-17-0007-830

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	1235
Year	1968
Publisher
Request Type	Report (FCO Marine Fish Pgm)
Location	Salem HQ
Date Created	1968 July
Date Cataloged	9/1/05
Date Published	1968
Type	stp crnr
Pages	1-13
Volume
Status	2
Descriptor	Pink Shrimp; movement; Oregon coast;
Date Entered	2005-09-01 00:00:00
Location In Clackamas Library	Oregon Coast N of isle
Author	Gary Milburn; Jack G Robinson
Duplicates	0
Number Remaining After Requests	0
Presumed All Distributed
Back Room Duplicates
Author	Robinson, J.G.; Milburn, G.S.
Risk
Species
Disposition Of Requests	Jean McCrae - 2: Request filled

Is a physical copy maintained for reference at Headquarters? Unknown