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- W2555443706 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 564:57-66 (2017) - DOI: https://doi.org/10.3354/meps11976 Feeding competition between the native oyster Crassostrea virginica and the invasive mussel Mytella charruana E. Galimany1,*, C. J. Freeman1, J. Lunt1, A. Domingos1, P. Sacks2, L. Walters2 1Smithsonian Marine Station, 701 Seaway Dr., Fort Pierce, FL 34982, USA 2Department of Biology, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, USA *Corresponding author: galimany@icm.csic.es ABSTRACT: The sub-tropical mussel Mytella charruana has been reported as invasive along the southeast coast of the USA since 1986. This mussel has been found to negatively impact the keystone species in its invaded range, the eastern oyster Crassostrea virginica. To date, however, no mechanism for this negative impact has been determined. To elucidate the role of the invasive mussel on economically important oyster reefs, we compared the feeding of both species in a lagoon along the east coast of Florida (USA). Three different methodologies were used: (1) in situ filter-feeding experiments using the biodeposition method to estimate feeding behavior; (2) laboratory assays to estimate the depletion of bacterial particles using a flow cytometer; and (3) stable isotope analysis in conjunction with ellipse-based metrics to investigate the niche size and overlap of these 2 species. The in situ filter-feeding experiments revealed that, compared to C. virginica, M. charruana had significantly higher clearance, filtration, rejection, organic ingestion, and absorption rates, as well as higher rejection percentage and absorption efficiency, but rejected the same amount of inorganic particles. Flow cytometry data suggested that bacteria were a food source for both bivalve species. Stable isotope values confirmed that M. charruana and C. virginica filled similar functional niches in this ecosystem. These results suggest that M. charruana can out-compete native oysters; the findings also demonstrate that an invasion of M. charruana might significantly alter plankton abundance, potentially limiting food sources available to other less efficient native filter-feeders such as clams. KEY WORDS: Bivalve · Oyster reef · Feeding behavior · Stable isotope · Indian River Lagoon · Florida Full text in pdf format Supplementary material PreviousNextCite this article as: Galimany E, Freeman CJ, Lunt J, Domingos A, Sacks P, Walters L (2017) Feeding competition between the native oyster Crassostrea virginica and the invasive mussel Mytella charruana. Mar Ecol Prog Ser 564:57-66. https://doi.org/10.3354/meps11976 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 564. Online publication date: February 03, 2017 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2017 Inter-Research." @default.
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- W2555443706 date "2017-02-03" @default.
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- W2555443706 title "Feeding competition between the native oyster Crassostrea virginica and the invasive mussel Mytella charruana" @default.
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