Persistent and delayed effects of toxic cyanobacteria exposure on life history traits of a common zooplankter

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dc.contributor.authorBeyer, Jessica E.
dc.contributor.authorHambright, K. David
dc.date.accessioned2020-10-29T15:33:14Z
dc.date.available2020-10-29T15:33:14Z
dc.date.issued2015-12-15
dc.description.abstractAnthropogenic eutrophication has resulted in shifts in phytoplankton community composition worldwide which represent dramatic changes in resource quality and availability for grazers such as rotifers. For these grazers, harmful algal blooms may have consequences that persist across several generations. We hypothesized that rotifers exposed to a pulse of the toxigenic cyanobacterium Microcystis aeruginosa, would suffer demographic and physiological effects that decreased their ability to recover after cyanobacteria exposure. Additionally, we hypothesized that rotifer population recovery after harmful algal blooms is modulated by delayed effects of pre‐bloom food availability. We used laboratory experiments to test the effects of switching from a high quality diet to toxigenic cyanobacteria on the physiological condition and associated life history changes of the common rotifer Brachionus calyciflorus. We found that M. aeruginosa exposure decreased fecundity of rotifers by 51.5%, and early exposure to high levels of the high‐quality food Chlamydomonas sp. did not ameliorate this negative effect. Rotifers exposed to Microcystis produced lower quality offspring (by 16.6%). However, we found that the effect of Microcystis on offspring body size was dependent on the density of food available in early life. Exposure to high‐density food for the first 3 d of life tempered the negative effects of Microcystis exposure, whereas initial exposure to low‐density food resulted in a 9.0% decrease in offspring length. We found that the negative effects of exposure to toxigenic cyanobacteria may accumulate across generations and limit the ability of rotifer populations to withstand the predicted increasing frequency and duration of harmful algal blooms.en_US
dc.description.peerreviewYesen_US
dc.description.sponsorshipFunding was provided by the Oklahoma Department of Wildlife Conservation (through the Sport Fish Restoration Program, Grant F‐61‐R to KDH), the University of Oklahoma Department of Biology, and OU Biological Station (through a Graduate Research Fellowship to JEB).en_US
dc.identifier.citationBeyer, J. E., and K. D. Hambright. (2016) Persistent and delayed effects of cyanobacteria exposure on life history traits of a common zooplankter. Limnology & Oceanography 61(2): 587-595. https://aslopubs-onlinelibrary-wiley-com.ezproxy.lib.ou.edu/doi/full/10.1002/lno.10239en_US
dc.identifier.doi10.1002/lno.10239en_US
dc.identifier.urihttps://hdl.handle.net/11244/325635
dc.languageen_USen_US
dc.subjectRotifersen_US
dc.subjectHarmful algal bloomsen_US
dc.subjectLife historyen_US
dc.subjectBrachionus calyciflorusen_US
dc.subjectCyanobacteriazooplankton interactionsen_US
dc.subjectOffspring sizeen_US
dc.subjectAllocationen_US
dc.titlePersistent and delayed effects of toxic cyanobacteria exposure on life history traits of a common zooplankteren_US
dc.typeArticleen_US
ou.groupCollege of Arts and Sciences::Department of Biologyen_US

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