• Login
    View Item 
    •   Digital Collections Home
    • South Carolina State Documents Depository
    • Department of Natural Resources
    • Fishery Bulletin
    • View Item
    •   Digital Collections Home
    • South Carolina State Documents Depository
    • Department of Natural Resources
    • Fishery Bulletin
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All Digital CollectionsCollectionsDateAuthorsTitlesSubjectsThis CollectionDateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Age, growth, maturity, and spawning of Spanish mackerel, Scomberomorus maculatus (Mitchill), from the Atlantic Coast of the southeastern United States

    • File:DNR_Fishery_Bulletin_Age_Growth_Maturity_1993.pdf
      Description:PDF Document
      MIME type:application/pdf
      File Size:498.2Kb
    Author
    Schmidt, David J.
    Collins, Mark R.
    Wyanski, David M.
    Subject
    Spanish mackerel
    Description
    Sectioned sagittae of 1,039 Spanish mackerel, Scomberomorus maculatus (Mitchim, from the Atlantic coast of the southeastern United States (North Carolina to Florida) were examined. The oldest male was age 6 and the oldest female age 11. Marginal increment analysis indicated that annulus formation peaks in May-June. The von Bertalanffy growth equation parameters (L_, k, and to' respectively) were: 538mm fork length <FLJ, 0.31, and -2.31 for males; 723mm FL, 0.24, and -1.80 for females; and, 760mm FL. 0.18. and -2.44 for sexes combined. Gonads from 1,742 specimens were examined histologically to assess reproductive state. Mature gonads were present in 89% of age-O males and 100% of older ages, whereas 5% of females were mature at age 0, 95% at age 1, and 100% at older ages. Females matured at 88450mm FL and males matured at 209-336mm FL. Estimates of length at 50% maturity (Lso) were 35.8 cm FL for females and 23.9 cm FL for males. Females were in spawning condition from May to August; ripe males were captured April November. Resting specimens were included in the assessment of maturity and the disadvantages of their inclusion are discussed.
    URI
    http://hdl.handle.net/10827/10544
    Collections
    • Fishery Bulletin
    Thumbnail
    View/Open
    PDF Document (498.2Kb)
    Date
    1993
    Metadata
    Show full item record
    Date Accessioned2013-08-22T13:01:33Z
    Date Available2013-08-22T13:01:33Z
    dc.descriptionSectioned sagittae of 1,039 Spanish mackerel, Scomberomorus maculatus (Mitchim, from the Atlantic coast of the southeastern United States (North Carolina to Florida) were examined. The oldest male was age 6 and the oldest female age 11. Marginal increment analysis indicated that annulus formation peaks in May-June. The von Bertalanffy growth equation parameters (L_, k, and to' respectively) were: 538mm fork length <FLJ, 0.31, and -2.31 for males; 723mm FL, 0.24, and -1.80 for females; and, 760mm FL. 0.18. and -2.44 for sexes combined. Gonads from 1,742 specimens were examined histologically to assess reproductive state. Mature gonads were present in 89% of age-O males and 100% of older ages, whereas 5% of females were mature at age 0, 95% at age 1, and 100% at older ages. Females matured at 88450mm FL and males matured at 209-336mm FL. Estimates of length at 50% maturity (Lso) were 35.8 cm FL for females and 23.9 cm FL for males. Females were in spawning condition from May to August; ripe males were captured April November. Resting specimens were included in the assessment of maturity and the disadvantages of their inclusion are discussed.
    Media TypeDocument
    Item LanguageEnglish
    PublisherSouth Carolina State Library
    Digital CollectionSouth Carolina State Documents Depository
    RightsCopyright status undetermined. For more information contact, South Carolina State Library, 1500 Senate Street, Columbia, South Carolina 29201.
    TypeText
    Digitization SpecificationsThis South Carolina State Document was either saved from a document available publicly online in PDF format or converted to PDF using Adobe Acrobat X Professional.
    

    SC State Library Information

    © 2022  South Carolina State Library
    DSpace Express is a service operated by 
    Atmire NV