The effect of the ectoparasitic pyramidellid snail, Boonea impressa, on the growth and health of oysters, Crassostrea virginica, under field conditions.

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dc.acquisition-srcen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorWilson, E.A.en_US
dc.contributor.authorPowell, E.N.en_US
dc.contributor.authorRay, S.M.en_US
dc.contributor.otherFishery Bulletinen_US
dc.date.accessioned2010-02-15T16:56:53Z
dc.date.available2010-02-15T16:56:53Z
dc.date.issued1988en_US
dc.degreeen_US
dc.descriptionp. 553-566.en_US
dc.description-otheren_US
dc.description.abstractBoonea (= Odostomia) impressa are contagiously distributed on oyster reefs so that some oysters are parasitized more than others. The parasite's mobility and the ability of oysters to recover from snail parasitism may be important in assessing the impact of parasitism on oyster populations. During a 4-week exposure period in the field, B. impressa reduced American oyster, Crassostrea virginica, growth rate and increased the intensity of infection by the protozoan, Perkinsus (=Dermocystidium) marinus, but produced few changes in the oyster's biochemical composition because, although net productivity was reduced, the oysters retained a net positive energy balance (assimilation > respiration). During a 4-week recovery period, growth rate returned to normal (control) levels, but infection by P. marinus continued to intensify in previously parasitized oysters kept B. impressa-free. Most changes in biochemical composition during recovery, including increased lipid and glycogen contents, could be attributed to the continuing increase in infection intensity of P. marinus. Consequently, the temporal stability and size of snail patches, particularly as they regulate infection by P. marinus, may be the most important factors influencing the impact of B. impressa on oyster reefs.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeTexas coasten_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/20303
dc.latitudeen_US
dc.locationTAMUG periodical collectionen_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries2514.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectparasitesen_US
dc.subjectectoparasitesen_US
dc.subjectoystersen_US
dc.subjectCrassostrea virginicaen_US
dc.subjectBoonea impressaen_US
dc.subjectoyster reefsen_US
dc.subjectPerkinsus marinusen_US
dc.titleThe effect of the ectoparasitic pyramidellid snail, Boonea impressa, on the growth and health of oysters, Crassostrea virginica, under field conditions.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue86(3)en_US

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