Variation in the isotopic signatures of juvenile gray snapper (Lutjanus griseus) from five southern Florida region

Gerard, Trika and Muhling, Barbara (2010) Variation in the isotopic signatures of juvenile gray snapper (Lutjanus griseus) from five southern Florida region. Fishery Bulletin, 108(1), pp. 98-105.

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Abstract

Measurements of 18O/16O and 13C/12C ratios in the carbonate of juvenile gray snapper (Lutjanus griseus) sagittal otoliths collected during 2001–2005 from different southern Florida regions indicated significant variations in the ratios between Florida Bay and surrounding areas. Annual differences in isotopic composition were also observed. Classification accuracy of individual otoliths to a region averaged 80% (63% to 96%), thereby enabling the probability of assigning an unknown individual to the appropriate juvenile nursery habitat. Identification of isotopic signatures in the otoliths of gray snapper from Florida Bay and adjacent ecosystems may be important for distinguishing specific portions of the bay that are crucial nursery grounds for juveniles. Separation of gray snapper between geographic regions and nursery sites is possible and has the potential to establish a link between adult gray snapper present on offshore reefs and larvae and juveniles at nursery habitats in Florida Bay or adjacent areas.

Item Type: Article
Title: Variation in the isotopic signatures of juvenile gray snapper (Lutjanus griseus) from five southern Florida region
Personal Creator/Author:
CreatorsEmail
Gerard, Trika
Muhling, Barbara
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 108
Number: 1
Page Range: pp. 98-105
Date: 2010
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 8771
Depositing User: Patti M. Marraro
Date Deposited: 10 Jun 2012 09:01
Last Modified: 10 Jun 2012 09:01
URI: http://aquaticcommons.org/id/eprint/8771

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