5264
Population Characteristics Of Gulf Menhaden Brevoortia Petromus
Population Characteristics Of Gulf Menhaden Brevoortia Petromus
Document
Published / External
5242
Menhaden Research
Project
Completed
2000-04-01
The status of the Gulf menhaden, Brevoortia patronus, fishery was assessed with purse-seine landings data from 1946 to 1997 and port sampling data from 1964 to 1997. These data were analyzed to determine growth rates, biological reference points for fi shing mortality from yield per recruit and maximum spawning potential analyses, spawner-recruit relationships, and maximum sustainable yield (MSY). The separable virtual population approach was used for the period 1976?97 (augmented by earlier analyses for 1964?75) to obtain point estimates of stock size, recruits to age 1, spawning stock size, and fishing mortality rates. Exploitation rates for age-1 fish ranged between 11% and 45%, for age-2 fi sh between 32% and 72%, and for age-3 fish between 32% and 76%. Biological reference points from yield per recruit (F0.1: 1.5?2.5/yr)and spawning potential ratio (F20: 1.3?1.9/yr and F30: 0.8?1.2/yr) were obtained for comparison with recent estimates of F (0.6?0.8/yr). Recent spawning stock estimates (as biomass or eggs) are above the long-term average, while recent recruits to age 1 are comparable to the long-term average. Parameters from Ricker-type spawner-recruit relations were estimated, although considerable unexplained variability remained. Recent survival to age-1 recruitment has generally been below that expected based on the Ricker spawner-recruit relation. Estimates of longterm MSY from PRODFIT and ASPIC estimation of production model ranged between 717,000 t and 753,000 t, respectively. Declines in landings between 1988 and 1992 raised concerns about the status of the Gulf menhaden stock. Landings have fluctuated without trend since 1992, averaging about 571,000 t. However, Gulf menhaden are short lived and highly fecund. Thus, variation in recruitment to age 1, largely mediated by environmental conditions, influences fishing successover the next two years (as age-1 and age-2 fi sh). Comparisons of recent estimates of fishing mortality to biological reference points do not suggest overfishing.
Theme
Brevoortia patronus
Theme
Growth
Theme
Size at Age
Theme
landings
Theme
life history
Theme
menhaden
Theme
purse seine
Theme
virtual population analysis
Temporal
1946-1997
Spatial
alabama
Spatial
florida
Spatial
gulf of mexico
Spatial
louisiana
Spatial
mississippi
Spatial
texas
Technical Memorandum (Tech Mem
Acrobat Portable Document Format
Published
Author
1998-01-01
2015-06
Person
Smith, Joseph W
joseph.w.smith@noaa.gov
101 Pivers Island Road
Beaufort
NC
28516
252-728-8765
252-728-8784
Joe Has Retired
Co-Author
2000
Person
Prager, Michael H
web@mhprager.com
https://www.mhprager.com/
Mike Prager Home Page
Online Resource
Distributor
2000
Organization
Southeast Fisheries Science Center
SEFSC
75 Virginia Beach Drive
Miami
FL
33149
USA
(305)361-5761
https://www.fisheries.noaa.gov/about/southeast-fisheries-science-center
About SEFSC
Online Resource
8:00 a.m. - 4:30 p.m. EST
Point of Contact
2015
Person
Mroch, Ray
Ray.Mroch@noaa.gov
101 Pivers Island Rd
Beaufort
NC
28516
252-728-0855
252-728-8784
Ground Condition
Range
1946-01-01
1997-12-31
Unclassified
This document is available
Available To Everyone
Get From url
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Please cite appropriately
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Please cite appropriately
2000
https://spo.nmfs.noaa.gov/sites/default/files/legacy-pdfs/tr149.pdf
tr149.pdf
https://spo.nmfs.noaa.gov/sites/default/files/legacy-pdfs/tr149.pdf
Online Resource
NOAA Technical Report NMFS 149 April 2000
U.S. Department of Commerce
Population Characteristics of
Gulf Menhaden, Brevoortia patronus
gov.noaa.nmfs.inport:5264
Lee Weinberger
2007-10-03T05:34:28
SysAdmin InPortAdmin
2022-08-09T17:11:01
2021-10-21
Southeast Fisheries Science Center
SEFSC
75 Virginia Beach Drive
Miami
FL
33149
USA
(305)361-5761
www.sefsc.noaa.gov
8:00 a.m. - 4:30 p.m. EST
1001
Public
No
2021-10-21
1 Year
2022-10-21