Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma)

Stephen R. Midway, Tyler Wagner, Stephen A. Arnott, Patrick Biondo, Fernando Martinez-Andrade, Thomas F. Wadsworth

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Delineation of stock structure is important for understanding the ecology and management of many fish populations, particularly those with wide-ranging distributions and high levels of harvest. Southern flounder (Paralichthys lethostigma) is a popular commercial and recreational species along the southeast Atlantic coast and Gulf of Mexico, USA. Recent studies have provided genetic and otolith morphology evidence that the Gulf of Mexico and Atlantic Ocean stocks differ. Using age and growth data from four states (Texas, Alabama, South Carolina, and North Carolina) we expanded upon the traditional von Bertalanffy model in order to compare growth rates of putative geographic stocks of southern flounder. We improved the model fitting process by adding a hierarchical Bayesian framework to allow each parameter to vary spatially or temporally as a random effect, as well as log transforming the three model parameters (L, K, and t0). Multiple comparisons of parameters showed that growth rates varied (even within states) for females, but less for males. Growth rates were also consistent through time, when long-term data were available. Since within-basin populations are thought to be genetically well-mixed, our results suggest that consistent small-scale environmental conditions (i.e., within estuaries) likely drive growth rates and should be considered when developing broader scale management plans.

Original languageEnglish (US)
Pages (from-to)323-332
Number of pages10
JournalFisheries Research
Volume167
DOIs
StatePublished - Jul 1 2015

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Gulf of Mexico
otoliths
Atlantic Ocean
estuaries
otolith
basins
ecology
coasts
environmental factors
environmental conditions
estuary
fish
Paralichthys lethostigma
coast
ocean
basin
parameter
gulf
harvest
distribution

All Science Journal Classification (ASJC) codes

  • Aquatic Science

Cite this

Midway, S. R., Wagner, T., Arnott, S. A., Biondo, P., Martinez-Andrade, F., & Wadsworth, T. F. (2015). Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma). Fisheries Research, 167, 323-332. https://doi.org/10.1016/j.fishres.2015.03.009
Midway, Stephen R. ; Wagner, Tyler ; Arnott, Stephen A. ; Biondo, Patrick ; Martinez-Andrade, Fernando ; Wadsworth, Thomas F. / Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma). In: Fisheries Research. 2015 ; Vol. 167. pp. 323-332.
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Midway, SR, Wagner, T, Arnott, SA, Biondo, P, Martinez-Andrade, F & Wadsworth, TF 2015, 'Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma)', Fisheries Research, vol. 167, pp. 323-332. https://doi.org/10.1016/j.fishres.2015.03.009

Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma). / Midway, Stephen R.; Wagner, Tyler; Arnott, Stephen A.; Biondo, Patrick; Martinez-Andrade, Fernando; Wadsworth, Thomas F.

In: Fisheries Research, Vol. 167, 01.07.2015, p. 323-332.

Research output: Contribution to journalArticle

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Midway SR, Wagner T, Arnott SA, Biondo P, Martinez-Andrade F, Wadsworth TF. Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma). Fisheries Research. 2015 Jul 1;167:323-332. https://doi.org/10.1016/j.fishres.2015.03.009