Population Dynamics and Parasite Load of a Foraminifer on Its Antarctic Scallop Host with Their Carbonate Biomass Contributions

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dc.contributor.authorHancock, Leanne G.
dc.contributor.authorWalker, Sally E.
dc.contributor.authorPerez-Huerta, Alberto
dc.contributor.authorBowser, Samuel S.
dc.contributor.otherUniversity of Georgia
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherWadsworth Center
dc.date.accessioned2023-10-02T15:17:51Z
dc.date.available2023-10-02T15:17:51Z
dc.date.issued2015
dc.description.abstractWe studied the population dynamics and parasite load of the foraminifer Cibicides antarcticus on its host the Antarctic scallop Adamussium colbecki from three localities differing by sea ice cover within western McMurdo Sound, Ross Sea, Antarctica: Explorers Cove, Bay of Sails and Herbertson Glacier. We also estimated CaCO3 biomass and annual production for both species. Cibicides populations varied by locality, valve type, and depth. Explorers Cove with multiannual sea ice had larger populations than the two annual sea ice localities, likely related to differences in nutrients. Populations were higher on Adamussium top valves, a surface that is elevated above the sediment. Depth did not affect Cibicides distributions except at Bay of Sails. Cibicides parasite load (the number of complete boreholes in Adamussium valves) varied by locality between 2% and 50%. For most localities the parasite load was < 20%, contrary to a previous report that similar to 50% of Cibicides were parasitic. The highest and lowest parasite load occurred at annual sea ice localities, suggesting that sea ice condition is not important. Rather, the number of adults that are parasitic could account for these differences. Cibicides bioerosion traces were categorized into four ontogenetic stages, ranging from newly attached recruits to parasitic adults. These traces provide an excellent proxy for population structure, revealing that Explorers Cove had a younger population than Bay of Sails. Both species are important producers of CaCO3. Cibicides CaCO3 biomass averaged 47-73 kg ha(-1) and Adamussium averaged 4987-6806 kg ha(-1) by locality. Annual production rates were much higher. Moreover, Cibicides represents 1.0-2.3% of the total host-parasite CaCO3 biomass. Despite living in the coldest waters on Earth, these species can contribute a substantial amount of CaCO3 to the Ross Sea and need to be incorporated into food webs, ecosystem models, and carbonate budgets for Antarctica.en_US
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.citationHancock, L. G., Walker, S. E., Pérez-Huerta, A., & Bowser, S. S. (2015). Population Dynamics and Parasite Load of a Foraminifer on Its Antarctic Scallop Host with Their Carbonate Biomass Contributions. In G. J. Vermeij (Ed.), PLOS ONE (Vol. 10, Issue 7, p. e0132534). Public Library of Science (PLoS). https://doi.org/10.1371/journal.pone.0132534
dc.identifier.doi10.1371/journal.pone.0132534
dc.identifier.urihttps://ir.ua.edu/handle/123456789/12604
dc.languageEnglish
dc.language.isoen_US
dc.publisherPLOS
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectGLOBAL OCEAN CARBONATE
dc.subjectMCMURDO SOUND
dc.subjectADAMUSSIUM-COLBECKI
dc.subjectEXPLORERS COVE
dc.subjectSEA-ICE
dc.subjectBENTHIC FORAMINIFERA
dc.subjectORGANIC-CARBON
dc.subjectFOOD WEBS
dc.subjectROSS SEA
dc.subjectDIVERSITY
dc.subjectMultidisciplinary Sciences
dc.titlePopulation Dynamics and Parasite Load of a Foraminifer on Its Antarctic Scallop Host with Their Carbonate Biomass Contributionsen_US
dc.typeArticle
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