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dc.contributor.author
Hoover, Angie
dc.contributor.author
Chiaverano, Luciano Martin
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dc.contributor.author
Deary, Alison L.
dc.contributor.author
Hernandez, Frank
dc.date.available
2023-10-25T15:02:38Z
dc.date.issued
2022-02
dc.identifier.citation
Hoover, Angie; Chiaverano, Luciano Martin; Deary, Alison L.; Hernandez, Frank; Variation in larval Gulf Menhaden diet, growth and condition during an atypical winter freshwater-discharge event in the northern Gulf of Mexico; Academic Press Ltd - Elsevier Science Ltd; Estuarine, Coastal and Shelf Science; 265; 2-2022; 1-11
dc.identifier.issn
0272-7714
dc.identifier.uri
http://hdl.handle.net/11336/215905
dc.description.abstract
In January 2016, historic levels of rainfall in the upper Mississippi River Basin prompted the earliest opening of the Bonnet Carré Spillway, a water control structure on the Mississippi River that diverts flood-stage river water through an alternate pathway (Lake Pontchartrain) into the northern Gulf of Mexico. This unprecedented winter opening of the spillway coincided with the spawning season and larval ingress period for Gulf Menhaden, a forage fish species that supports the largest commercial fishery in the region. Oceanographic observations and plankton samples were collected in the Mississippi Bight region shortly after the Bonnet Carré Spillway winter opening to examine the impacts on larval Gulf Menhaden feeding, growth and condition. Three distinct water masses were identified based on temperature, salinity, and particle scattering (proxy for turbidity) characteristics. Larval Gulf Menhaden with the highest growth rates and body condition were collected in a water mass defined by relatively high temperature and salinity and relatively low turbidity and zooplankton (prey) abundance. In contrast, larvae with the slowest growth rates and poor body condition were collected in a water mass with the highest zooplankton abundance, but also highest turbidity and lowest temperature and salinity. This water mass was nearest the diversion outflow and most impacted by the spillway opening. Our results indicate that the anomalous freshwater discharge event resulted in hydrographic conditions that diminished otherwise favorable larval fish foraging habitat with abundant zooplankton prey. These findings suggest that the recent trend of Bonnet Carré Spillway openings may result in negative consequences for larval fish survival and subsequent fishery recruitment.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BREVOORTIA PATRONUS
dc.subject
CLUPEIDAE
dc.subject
DIET
dc.subject
GULF OF MEXICO
dc.subject
ICHTHYOPLANKTON
dc.subject
MISSISSIPPI BIGHT
dc.subject
RIVER DISCHARGE
dc.subject
USA
dc.subject.classification
Biología Marina, Limnología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Variation in larval Gulf Menhaden diet, growth and condition during an atypical winter freshwater-discharge event in the northern Gulf of Mexico
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-10-25T12:51:05Z
dc.journal.volume
265
dc.journal.pagination
1-11
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Hoover, Angie. University Of Southern Mississippi; Estados Unidos
dc.description.fil
Fil: Chiaverano, Luciano Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentina. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Deary, Alison L.. University Of Southern Mississippi; Estados Unidos
dc.description.fil
Fil: Hernandez, Frank. University Of Southern Mississippi; Estados Unidos
dc.journal.title
Estuarine, Coastal and Shelf Science
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0272771421005412
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ecss.2021.107692
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