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dc.contributor.authorJohnson, Matthew D.  Concept link
dc.contributor.authorBeaudoin, David J.  Concept link
dc.contributor.authorFrada, Miguel J.  Concept link
dc.contributor.authorBrownlee, Emily F.  Concept link
dc.contributor.authorStoecker, Diane K.  Concept link
dc.identifier.citationJohnson, M. D., Beaudoin, D. J., Frada, M. J., Brownlee, E. F., & Stoecker, D. K. (2018). High grazing rates on cryptophyte algae in Chesapeake Bay. Frontiers in Marine Science, 5, 241en_US
dc.description© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Johnson, M. D., Beaudoin, D. J., Frada, M. J., Brownlee, E. F., & Stoecker, D. K. High grazing rates on cryptophyte algae in Chesapeake Bay. Frontiers in Marine Science, 5, (2018): 241. doi:10.3389/fmars.2018.00241.en_US
dc.description.abstractCryptophyte algae are globally distributed photosynthetic flagellates found in freshwater, estuarine, and neritic ecosystems. While cryptophytes can be highly abundant and are consumed by a wide variety of protistan predators, few studies have sought to quantify in situ grazing rates on their populations. Here we show that autumnal grazing rates on in situ communities of cryptophyte algae in Chesapeake Bay are high throughout the system, while growth rates, particularly in the lower bay, were low. Analysis of the genetic diversity of cryptophyte populations within dilution experiments suggests that microzooplankton may be selectively grazing the fastest-growing members of the population, which were generally Teleaulax spp. We also demonstrate that potential grazing rates of ciliates and dinoflagellates on fluorescently labeled (FL) Rhodomonas salina, Storeatula major, and Teleaulax amphioxeia can be high (up to 149 prey predator−1 d−1), and that a Gyrodinium sp. and Mesodinium rubrum could be selective grazers. Potential grazing was highest for heterotrophic dinoflagellates, but due to its abundance, M. rubrum also had a high overall impact. This study reveals that cryptophyte algae in Chesapeake Bay can experience extremely high grazing pressure from phagotrophic protists, and that this grazing likely shapes their community diversity.en_US
dc.description.sponsorshipThe authors thank the National Science Foundation (OCE 1031718 and 1436169) for providing support for this research.en_US
dc.publisherFrontiers Mediaen_US
dc.rightsAttribution 4.0 International*
dc.subjectChesapeake Bayen_US
dc.subjectMesodinium rubrumen_US
dc.titleHigh grazing rates on cryptophyte algae in Chesapeake Bayen_US

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International