Assessing Variability in Juvenile Brown Shrimp Growth Rates in Small Marsh Ponds: An Exercise in Model Evaluation and Improvement

Leo, Jennifer P.; Minello, Thomas J.; Grant, William E.

doi:10.1002/mcf2.10028

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Assessing Variability in Juvenile Brown Shrimp Growth Rates in Small Marsh Ponds: An Exercise in Model Evaluation and Improvement

2018
By Leo, Jennifer P. ; Minello, Thomas J. ; Grant, William E.
Source: Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 10(3), 347–356

[PDF-2.51 MB]

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Details:

Journal Title:

Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science
Personal Author:

Leo, Jennifer P. ; Minello, Thomas J. ; Grant, William E.

Leo, Jennifer P. ; Minello, Thomas J. ; Grant, William E. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; OST (Office of Science and Technology)

NMFS (National Marine Fisheries Service) ; OST (Office of Science and Technology) Less -
Description:

Brown shrimp Farfantepenaeus aztecus support a commercially important fishery in the northern Gulf of Mexico, and the juvenile shrimp use coastal estuaries as nurseries. Production of young shrimp from these nurseries, and hence commercial harvest of adults from the Gulf, is highly variable from year to year. Our recently published, individual‐based model attempted to explain this variability as a function of habitat and the environmental factors such as temperature, salinity, and access to intertidal marsh habitat. We conducted a mark–recapture field study between April 12 and June 9, 2011, to provide growth rate data for model testing, as well as to further examine factors that affect growth, including available food biomass. Brown shrimp growth rates were measured in three polyhaline marsh ponds over periods of 2 to 4 weeks. We recorded hourly temperature and flooding data and measured biomass of infaunal food organisms. We parameterized our production model with input from 2011 to compare modeled output with observed data. Mean growth rate estimates from the model were similar to the estimated mean growth rate observed in the field (1.13 mm/d and 1.06 mm/d, respectively); however, field growth rates differed significantly among three marsh ponds (1.02, 1.03, and 1.26 mm/d). Data on infaunal biomass suggest that spatial and temporal variability in available food organisms is related to differences in shrimp growth, and the inclusion of such information may enhance the model.
Keywords:

[+]

Penaeus Aztecus Shrimp Populations Variation
Source:

Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science 10(3), 347–356
DOI:

https://doi.org/10.1002/mcf2.10028
Document Type:

Journal Article
Funding:

Contract no. HAIP 11‐006
Place as Subject:

Mexico, Gulf of ; Gulf Coast (U.S.)

Mexico, Gulf of ; Gulf Coast (U.S.) Less -
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:bdc9a3311621607c62b1190afdbbff21f7871f18d4857dc76b4519d455c632f6
Download URL:

https://repository.library.noaa.gov/view/noaa/24636/noaa_24636_DS1.pdf
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Assessing Variability in Juvenile Brown Shrimp Growth Rates in Small Marsh Ponds: An Exercise in Model Evaluation and Improvement

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