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Variations in size and sex ratio of king mackerel, Scomberomorus cavalla , off Louisiana, 1977-85
Trent, L.; Fable Jr., W.A.; Russell, S.J.; Bane, G.W.; Palko, B.J. (1987). Variations in size and sex ratio of king mackerel, Scomberomorus cavalla , off Louisiana, 1977-85. Mar. Fish. Rev. 49(2): 91-97
In: Marine Fisheries Review. National Oceanic and Atmospheric Administration (NOAA): Seattle, Wash.. ISSN 0090-1830, more
Peer reviewed article  

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Keywords
    Mackerel fisheries; Population structure; Sex ratio; Size distribution; Stock assessment; Scomberomorus cavalla (Cuvier, 1829) [WoRMS]; Marine

Authors  Top 
  • Trent, L.
  • Fable Jr., W.A.
  • Russell, S.J.
  • Bane, G.W.
  • Palko, B.J.

Abstract
    Data from over 27,000 king mackerel, Scomberomorus cavalla, collected from Grand Isle, Louisiana, during 1977-85 were analyzed to evaluate temporal variations in size and sex compositions. The fish were caught by recreational and commercial hook-and-line fishermen. Groups of king mackerel from Louisiana were composed of a greater portion of large fish than were populations from other areas in the southeastern United States with the possible exception of South Carolina and Georgia. Large (> 120 cm fork length) king mackerel were caught off Louisiana throughout the year. For both males and females, catches were composed of the smallest fish in April through October and the largest fish between November and March. Females dominated catches in most months and comprised a greater portion of the recreational than the commercial landings. Female percentage was usually lower in the warmer than in the colder months. In general, female percentage increased with an increase in fish size.

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