Age, Growth, and Natural Mortality of Whitebone Porgy, Calamus Leucosteus, From the Southeastern United States

Details

• Journal Title:
  Aquatic Science and Technology
• Personal Author:
  Burton, Michael L. ; Potts, Jennifer C. ; Poholek, Ariel ; Page, Jordan ; Knight, Dalton
• NOAA Program & Office:
  NMFS (National Marine Fisheries Service) ; SEFSC (Southeast Fisheries Science Center)
• Description:
  Ages of whitebone porgy (Calamus leucosteus) (n = 559) from southeastern U. S. commercial and recreational fisheries from 1975 – 2017 were determined using sectioned otoliths. Opaque zones were annular, forming April – July (peaking in June). Ages ranged from 2 – 19 years, and the largest fish measured 513 mm TL (total length, mm). Body size relationships were: TL = 1.09 FL + 16.07 (n = 469, r2 = 0.97), FL = 0.89 TL – 6.39 (n= 469, r2 = 0.97), W = 2.8 x 10-5 TL2.91 (n = 462), and W = 6.8 x 10-5 FL2.82 (n = 417) where W is total weight (grams, g) and FL is fork length (mm). The von Bertalanffy growth equations were Lt = 365 (1 - e-0.35 (t + 1.37)) (n = 559) for all areas combined, Lt = 365 (1 - e-0.55(t + 0.00)) (n = 185) for fish from North Carolina through Cape Canaveral, Florida, and Lt = 368 (1 - e-0.25 (t + 2.51)) (n = 374) for fish from southeast Florida. Mean size-at-age was significantly different between regions for ages 4 – 9, (92% of total samples). Point estimates of natural mortality were M = 0.22 and M = 0.30 for northern- and southern-region fish, respectively, while age-specific estimates of M were 0.85 – 0.55 y-1 for ages 2– 19 for the northern region and 0.41 – 0.26 (ages 2-14) for southern region fish. This study presents updated life history parameters for whitebone porgy from the Atlantic waters off the southeastern United States.
• Source:
  Aquatic Science and Technology, 9(2), 22
• DOI:
  https://doi.org/10.5296/ast.v9i2.16220
• ISSN:
  2168-9148
• Format:
  PDF
• Publisher:
  Bigedu Foundation
• Document Type:
  Journal Article
• License:
  https://creativecommons.org/licenses/by/4.0/
• Rights Information:
  CC BY
• Compliance:
  Library
• Main Document Checksum:
  urn:sha-512:fcc2e2c84b36475f54b2562f15f78d9b1d414f4e3a950af923b9978210f181e23caefc873de23e3f0af9ea2067ae3b666052bf76f1ff6b6fc301070fc22561b3
• Download URL:
  https://repository.library.noaa.gov/view/noaa/63445/noaa_63445_DS1.pdf
• File Type:
  [PDF - 666.32 KB ]