Maturation of Nineteen Species of Finfish off the Northeast Coast of the United States, 1985-1990

O'Brien, Loretta and Burnett, Jay and Mayo, Ralph K. (1993) Maturation of Nineteen Species of Finfish off the Northeast Coast of the United States, 1985-1990. NOAA/National Marine Fisheries Service, (NOAA Technical Report NMFS, 113)

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Abstract

Observations on maturation stages of nineteen species of economically important finfish off the Northeast coast of the USA were analyzed to examine relationships between fish size or age, and maturity. Maturation schedules and median lengths (L50) and ages (A50) at maturation were derived by fitting the logistic model to the observed proportions. Analyses were generally restricted to observations from 1985 to 1990 obtained during stratified random bottom trawl surveys conducted in spring and autumn by the Northeast Fisheries Science Center and the Commonwealth of Massachusetts Division of Marine Fisheries in waters of the continental shelf from Nova Scotia to Cape Hatteras, North Carolina. Butterfish, Peprilus triacanthus, attained sexual maturity at the smallest median length (11.4 cm, males) and pollock, Pollachius virens, at the highest (41.8 em, males). Median length at maturity for gadiforms ranged from 22.2 to 41.8 em. Within the pleuronectiforms, median length at maturity ranged from 19.1 to 30.4 cm. Median lengths for the pelagic and miscellaneous demersal species were in the same ranges as the pleuronectiforms. Butterfish also attained sexual maturity at the youngest median age (0.9 yr, both sexes) whereas redfish, Sebastes fasciatus, were the latest to mature (5.5 yr, both sexes). For gadids, the median age at maturity ranged from 1.3 to 2.3 yr. Within the pleuronectiforms, median age at maturity ranged from 1.3 to 4.4 yr and, for pelagic species, from 0.9 to 3.0 yr. Median lengths and ages for many species are lower than those reported in earlier studies of the same general region of the Northwest Atlantic. (PDF file contains 72 pages.)

Item Type: Monograph or Serial Issue
Title: Maturation of Nineteen Species of Finfish off the Northeast Coast of the United States, 1985-1990
Personal Creator/Author:
CreatorsEmail
O'Brien, Loretta
Burnett, Jay
Mayo, Ralph K.
Series Name: NOAA Technical Report NMFS
Number: 113
Date: 1993
Publisher: NOAA/National Marine Fisheries Service
Issuing Agency: United States National Marine Fisheries Service
Subjects: Management
Ecology
Fisheries
Item ID: 2702
Depositing User: Patti M. Marraro
Date Deposited: 31 Oct 2009 02:19
Last Modified: 29 Sep 2011 18:30
URI: http://aquaticcommons.org/id/eprint/2702

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