Age, growth, and mortality of the red porgy, Pagrus pagrus
In: Transactions of the American Fisheries Society. American Fisheries Society: Bethesda, MD, etc.,. ISSN 0002-8487; e-ISSN 1548-8659, more
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| Authors | | Top |
- Manooch, C.S.
- Huntsman, G.R.
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| Abstract |
Scales and otoliths of the red porgy, Pagrus pagrus, sampled from the North Carolina and South Carolina headboat fishery were examined to determine if they could be used for aging the species. Both structures were satisfactory, but because of regeneration and false annuli, only 54% of the fish examined could be aged by scales. Ages could be determined from a larger percentage of the otoliths, but preparation and examination was time‐consuming. Maximum age of fish collected was XV; maximum total length was 694 mm. Growth occurred from about mid‐March to November. Back‐calculated mean lengths ranged from 176 mm at end of year 1 to 640 mm at the end of year 15. Total mortality estimates, based on catch curves from over 13,000 fish, ranged from 32 to 55%. The length‐weight relationship is described by the equation W = 0.00002524L2.8939, where W is weight in grams, and L is total length in millimeters. |
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