Survey for the oyster parasites Bonamia, MSX, and Dermo in Texas bay systems

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dc.contributor.advisorScarpa, John
dc.contributor.advisorScarpa, John
dc.contributor.authorBoeck, Hailey
dc.contributor.authorBoeck, Hailey
dc.contributor.committeeMemberPortnoy, David
dc.contributor.committeeMemberLaramore, Susan
dc.contributor.committeeMemberPortnoy, David
dc.contributor.committeeMemberLaramore, Susan
dc.contributor.committeeMemberLaramore, Susan
dc.date.accessioned2020-04-14T15:36:20Z
dc.date.accessioned2020-04-14T15:36:20Z
dc.date.available2020-04-14T15:36:20Z
dc.date.available2020-04-14T15:36:20Z
dc.date.issued2018-12
dc.date.issued2018-122018-12
dc.description.abstractTexas Parks and Wildlife Department restricts movement of American oysters (Crassostrea virginica) from one Texas bay system to another because of potential disease transfer and genetic differences in natural oyster stocks. Oyster diseases, such as Bonamiosis, which was found serendipitously in 2007 in Florida waters, and MSX (Haplosporidium nelsoni) have not been characterized in Texas bays. Therefore, it is prudent to periodically examine Crassostrea virginica and other species (e.g., Ostrea equestris and Isognomon sp.) from different Texas bays for the presence of the causative agents of these diseases, i.e., Bonamia spp. and Haplosporidium nelsoni, as well as known diseases such as Perkinsus marinus. American oysters (n=30/bay) were collected from October to December 2016 in Copano Bay, San Antonio Bay, Matagorda Bay, Galveston Bay, and Sabine Lake. In addition, 89 historical American oyster tissue samples collected from 2010 and 2011 in Aransas Bay and Copano Bay in Texas were assessed. Finally, 38 flat tree oysters (Isognomon alatus) were collected in December 2017 from Lower Laguna Madre in Port Isabel, Texas. All specimens were assessed by PCR and histology for the presence or absence of Bonamia sp., Haplosporidium nelsoni, and Perkinsus marinus. No Bonamia spp. or H. nelsoni was detected in any American or flat tree oyster, but on average 15% of the 2016 American oyster samples and 27% of the 2010-2011 American oyster samples contained P. marinus. Sanger sequencing of isolated DNA was performed on samples that were positive for Dermo as well as the positive Bonamia sp. and H. nelsoni controls, which confirmed results. These results serve as a point reference that indicate Bonamia spp. and H. nelsoni are still not currently present in Texas bays, but continued biennial monitoring is suggested.en_US
dc.description.collegeCollege of Science and Engineeringen_US
dc.description.departmentLife Sciencesen_US
dc.format.extent66 pagesen_US
dc.identifier.urihttps://hdl.handle.net/1969.6/87816
dc.identifier.urihttps://hdl.handle.net/1969.6/87816https://hdl.handle.net/1969.6/87816
dc.language.isoen_USen_US
dc.rightsAttribution 3.0 United States*
dc.rightsThis material is made available for use in research, teaching, and private study, pursuant to U.S. Copyright law. The user assumes full responsibility for any use of the materials, including but not limited to, infringement of copyright and publication rights of reproduced materials. Any materials used should be fully credited with its source. All rights are reserved and retained regardless of current or future development or laws that may apply to fair use standards. Permission for publication of this material, in part or in full, must be secured with the author and/or publisher.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subjectBonamiaen_US
dc.subjectDermoen_US
dc.subjecthistologyen_US
dc.subjectMSXen_US
dc.subjectoystersen_US
dc.subjectparasiteen_US
dc.titleSurvey for the oyster parasites Bonamia, MSX, and Dermo in Texas bay systemsen_US
dc.typeTexten_US
dc.type.genreThesisen_US
thesis.degree.disciplineMarine Biologyen_US
thesis.degree.grantorTexas A & M University--Corpus Christien_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Artsen_US

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