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Effect of sampling interval on estimates of larval supply

Publication ,  Journal Article
Ogburn, MB; Forward, RB
Published in: Fishery Bulletin
January 1, 2012

Estimates of larval supply can provide information on year-class strength that is useful for fisheries management. However, larval supply is difficult to monitor because long-term, high-frequency sampling is needed. The purpose of this study was to subsample an 11-year record of daily larval supply of blue crab (Callinectes sapidus) to determine the effect of sampling interval on variability in estimates of supply. The coefficient of variation in estimates of supply varied by 0.39 among years at a 2-day sampling interval and 0.84 at a 7-day sampling interval. For 8 of the 11 years, there was a significant correlation between mean daily larval supply and lagged fishery catch per trip (coeff icient of correlation [r]=0.88). When these 8 years were subsampled, a 2-day sampling interval yielded a significant correlation with fishery data only 64.5% of the time and a 3-day sampling interval never yielded a significant correlation. Therefore, high-frequency sampling (daily or every other day) may be needed to characterize interannual variability in larval supply.

Duke Scholars

Published In

Fishery Bulletin

ISSN

0090-0656

Publication Date

January 1, 2012

Volume

110

Issue

4

Start / End Page

451 / 457

Related Subject Headings

  • Fisheries
  • 3005 Fisheries sciences
  • 0704 Fisheries Sciences
 

Citation

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Ogburn, M. B., & Forward, R. B. (2012). Effect of sampling interval on estimates of larval supply. Fishery Bulletin, 110(4), 451–457.
Ogburn, M. B., and R. B. Forward. “Effect of sampling interval on estimates of larval supply.” Fishery Bulletin 110, no. 4 (January 1, 2012): 451–57.
Ogburn MB, Forward RB. Effect of sampling interval on estimates of larval supply. Fishery Bulletin. 2012 Jan 1;110(4):451–7.
Ogburn, M. B., and R. B. Forward. “Effect of sampling interval on estimates of larval supply.” Fishery Bulletin, vol. 110, no. 4, Jan. 2012, pp. 451–57.
Ogburn MB, Forward RB. Effect of sampling interval on estimates of larval supply. Fishery Bulletin. 2012 Jan 1;110(4):451–457.

Published In

Fishery Bulletin

ISSN

0090-0656

Publication Date

January 1, 2012

Volume

110

Issue

4

Start / End Page

451 / 457

Related Subject Headings

  • Fisheries
  • 3005 Fisheries sciences
  • 0704 Fisheries Sciences