Results of Lingcod Tagging off the Central Oregon Coast

Identification Information

Citation

Originator: Barss, William H. and Robert L. Demory

Publish Date: 1989

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: The Oregon Department of Fish and Wildlife conducted tagging experiments in 1977 and 1978 to determine the inshore - offshore exchange of lingcod, Ophiodon elongatus, off the central coast of Oregon. There were 293 lingcod tagged near Johnson Rock in inshore waters off Newport, Oregon in December 1977 through March 1978 and 3,818 tagged in offshore waters near Stonewall Bank off Newport, Oregon in July 1978. Female lingcod comprised 16% of the fish tagged near shore and 89% of the fish tagged offshore. A total of 20 (6.8%) and 637 (16.7%) tagged fish were recovered from inshore and offshore respectively. Most tagged fish were recovered from the respective tagging areas. Only 11% of tagged fish moved 5 nautical miles (nm) or more from the areas of tagging. Less than 5% moved more than 25 nm. Interchange between Johnson Rock and Stonewall Bank was not observed. Changes in depth, as measured by depth increments originating at each tagging site, was uncommon with 87% males and 77% of the females recovered within 10 fathoms (fm) of their tagging site. We estimated a total instantaneous mortality rate of 0.593 and an exploitation rate of 0.092 from fish recovered from the Stonewall Bank tagging experiment. The offshore commercial fishery does not appear to strongly affect near shore stocks of lingcod, but trawling for sole in near shore waters does catch some lingcod whose range probably includes inshore reefs.

Purpose:

Time Period of Content: 1977 and 1978

Geographic Extent: central coast of Oregon

Status: Final

Use Constraints:

Format: PDF

Data Quality Information

Lineage-Source: This work conducted with matching state and federal PL 99-659 and PL 88-309 funds.

Data Information

No data information was supplied.

Entity and Attribute Information

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

Is a physical copy maintained for reference at Headquarters? Unknown