Impact of the commercial fishery on the population of bait shrimp (Penaeus spp.) in Biscayne Bay, 1986

Campos, W. L. and Berkeley, S. A. (2003) Impact of the commercial fishery on the population of bait shrimp (Penaeus spp.) in Biscayne Bay, 1986. Silver Spring, MD, NOAA/National Ocean Service/National Centers for Coastal Ocean Science, (NOAA Technical Memorandum NOS NCCOS CCMA, 165)

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Abstract

Monthly population size of bait shrimp in the Bay was estimated from December 1984 to July 1985. Growth rates for male and female P. duorarum showed that pink shrimp exhibit a mean residence time in the nursery area (Biscayne Bay) of approximately 21 weeks. Monthly mortality rates were determined for each sex of pink shrimp. It was estimated that 23% and 26% of the male and female monthly population size, respectively, was absorbed by both the fishery and ecosystem monthly. Monthly proportion of the standing stock expected to die exclusively through fishing was 6.5% and 6.0% for males and females respectively. Estimates of emigration rates showed that approximately 4.0% of the population was lost from the Bay system each month. This surplus production was about 50% of the average monthly catch by the fleet. Fishing mortality represents only 8 - 9% of the losses to the shrimp population. The biggest source of loss is emigration, suggesting that most shrimp beyond the size at recruitment (to the fishery) are not utilized for food while in the Bay. Thus, it appears that the direct impact of the fishery on the bait shrimp population is relatively small. (PDF contains 46 pages)

Item Type: Monograph or Serial Issue
Title: Impact of the commercial fishery on the population of bait shrimp (Penaeus spp.) in Biscayne Bay, 1986
Personal Creator/Author:
CreatorsEmail
Campos, W. L.
Berkeley, S. A.
Series Name: NOAA Technical Memorandum NOS NCCOS CCMA
Number: 165
Date: 2003
Publisher: NOAA/National Ocean Service/National Centers for Coastal Ocean Science
Place of Publication: Silver Spring, MD
Issuing Agency: United States National Ocean Service
Additional Information: University of Miami RSMAS TR 2003-02; Center for Coastal Monitoring and Assessment
Subjects: Ecology
Management
Fisheries
Item ID: 2191
Depositing User: Patti M. Marraro
Date Deposited: 02 Jun 2009 19:14
Last Modified: 29 Sep 2011 19:38
URI: http://aquaticcommons.org/id/eprint/2191

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