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Updated reproductive parameters for the shortfin mako, Isurus oxyrinchus, in the North Atlantic with inferences of distribution by sex and reproductive stage



Details

  • Journal Title:
    Fishery Bulletin
  • Personal Author:
    Natanson, Lisa J. ; Winton, Megan ; Bowlby, Heather ; Joyce, Warren ; Deacy, Bethany ; Coelho, Rui ; Rosa, Daniela
  • NOAA Program & Office:
    NMFS (National Marine Fisheries Service) ; NEFSC (Northeast Fisheries Science Center)
  • Description:
    Prompted by recent concern about the stock status of the shortfin mako (Isurus oxyrinchus) in the ; North Atlantic Ocean, we examined ; reproductive data from 731 individuals ; (351 females and 380 males) collected ; by 3 scientific organizations to improve ; estimates of size and age at maturity. ; Males ranged in size from 70 to 283 cm ; fork length (FL) and females from ; 71 to 338 cm FL. Females matured ; between 263 and 291 cm FL, with an ; estimated median length at maturity ; (L50) of 280 cm FL and a median weight ; at maturity (WT50) of 275 kg. Males ; matured between 173 and 187 cm FL, ; with an L50 of 182 cm FL and WT50 of ; 64 kg. Catch records from 4 international programs were also examined ; to investigate spatiotemporal variation ; in the distribution of life history stages ; based on updated size-at-maturity estimates and to identify potential parturition and nursery grounds. These ; records identified the Gulf of Mexico ; and the eastern North Atlantic Ocean ; off Portugal as birthing and nursery ; areas, with the most important nursery ; area occurring in the western North ; Atlantic Ocean.
  • Source:
    Fishery Bulletin, 118(1)
  • DOI:
    https://doi.org/10.7755/FB.118.1.3
  • Document Type:
    Journal Article
  • Place as Subject:
    Atlantic Ocean
  • Rights Information:
    Public Domain
  • Compliance:
    Submitted
  • Download URL:
    https://repository.library.noaa.gov/view/noaa/31618/noaa_31618_DS1.pdf
  • File Type:
    Filetype[PDF - 1.37 MB]
  • Collection(s):
    National Marine Fisheries Service (NMFS)
  • Main Document Checksum:
    urn:sha256:596454c565b463b63f0c127a14efc099f64d3a25fde20915c3121d9be20a3eb0
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