Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California

Spratt, Jerome D. (1987) Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California. Monterey, CA, California Department of Fish and Game, Marine Resources Region, (Marine Resources Administrative Report, 87-13)

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Abstract

In Tomales Bay, 4-, 5-, and 6-yr-old herring, Clupea harengus pallasi, composed 85% by number of the 1986-87 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 88% of the roundhaul catch, and 4-, 5-, and 6-yr-old herring composed 86% by number of the gill net catch. The age composition of both the Tomales Bay and San Francisco Bay gill net catch has shifted to primarily 4-, 5-, and 6-yr-old herring. Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was good, with the 1985 yr class composing 37% of the catch. The mean length of herring in the San Francisco Bay roundhaul catch decreased to 174 mm BL, and the mean length of the gill net catch decreased to 194 mm BL. The mean length of the Tomales Bay catch also decreased to 197 mm BL. Average weight at age of Tomales Bay herring is below average for the fourth consecutive year. In San Francisco Bay the average weight at age is above average, even though length at age declined slightly. (20pp.)

Item Type: Monograph or Serial Issue
Title: Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California
Personal Creator/Author:
CreatorsEmail
Spratt, Jerome D.
Series Name: Marine Resources Administrative Report
Number: 87-13
Date: 1987
Publisher: California Department of Fish and Game, Marine Resources Region
Place of Publication: Monterey, CA
Latitude: 38.1011
Longitude: 122.544
Issuing Agency: California Department of Fish and Game
Uncontrolled Keywords: Pacific herring; Clupea harengus pallasi
Subjects: Management
Fisheries
Biology
Item ID: 334
Depositing User: Joan Parker
Date Deposited: 05 Oct 2007 14:05
Last Modified: 29 Sep 2011 22:13
URI: http://aquaticcommons.org/id/eprint/334

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