Green Sturgeon Population Characteristics in Oregon, 1 October 2002 - 30 September 2003; Progress Reports 2003

Identification Information

Citation

Originator: Farr, R. A. and T. A. Rien

Publish Date: 2003

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: During May through August 2003, we used gill nets, seine nets, and an underwater video camera to attempt to capture adult and sub-adult green sturgeon Acipenser medirostris and white sturgeon Acipenser transmontanus in the Umpqua River, Coos River, Coquille River, Siuslaw River, and Yaquina River, Oregon. We set 66 static gill nets for an average 1.0 hand captured no green sturgeon and 8 individual white sturgeon (114-181 cm FL). We deployed 17 seine nets for an average 0.1 hand captured no sturgeon. We deployed the underwater camera 21 times for 0.1-0.8 hand observed no sturgeon. Unmarked sturgeon were tagged with spaghetti and passive integrated transponder (PIT) tags. Field staff from Oregon Department of Fish and Wildlife's Gold Beach office sampled green sturgeon in the Rogue River. Fifty unmarked green sturgeon (136-197 cm FL) were captured in gill nets and one unmarked green sturgeon was captured angling (147 cm FL). Forty-eight of the unmarked sturgeon were tagged with spaghetti tags and 47 were tagged with PIT tags. Of these, 5 were recaptured once and 1 was a recapture from the previous year. Thirty-five fish were radio tagged, sonic tagged, or both. One juvenile green sturgeon (17-cm TL) was captured during beach-seine sampling. We interpreted ages of 27 green sturgeon from pectoral fin-spine sections collected by Oregon Depar,tment of Fish and Wildlife, Columbia River Management staff during Oregon coastal estuary sampling and estimated parameters of Von Bertalanffy growth functions using these and previously collected data.

Purpose:

Time Period of Content:

Geographic Extent: Umpqua River, Coos River, Coquille River, Siuslaw River, and Yaquina River

Status: Final

Use Constraints:

Format: PDF file

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Is a physical copy maintained for reference at Headquarters? No