Humboldt State University



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dc.contributor.advisor Hendrickson, Gary Rich, Kimberly Suzanne 2018-12-12T17:05:45Z 2018-12-12T17:05:45Z 2006-12
dc.description Thesis (M.S.)--Humboldt State University, Natural Resources: Fisheries Biology, 2006 en_US
dc.description.abstract Cytophaga-like bacteria are the known etiological agent responsible for hinge ligament disease in juvenile Pacific oysters (Crassostrea gigas). An economically viable, natural way to manage this disease has not been documented. In vitro efficacy of hydrogen peroxide, CitroBio and ozone were determined for one strain (C1B-2) of Cytophaga-like bacteria. In vitro results showed that the CLB strain had the greatest sensitivity to CitroBio at 1000 ppm after 30 seconds. In vivo trials with hydrogen peroxide and extensive histological work failed to show a decrease in hinge ligament erosion. Approximately 71-74% of juvenile C. gigas were observed with ligament erosion at the conclusion of field trials. No serious pathological conditions resulting from a weakened hinge ligament were observed. No mortality nor negative effects on growth were noted as a result of treatment with hydrogen peroxide. In vitro results suggest further testing with CitroBio would be of benefit. en_US
dc.language.iso en_US en_US
dc.publisher Humboldt State University en
dc.subject Fisheries en_US
dc.subject Pacific oysters (Crassostrea gigas) en_US
dc.subject Humboldt Bay en_US
dc.subject Cytophaga-like bacteria en_US
dc.subject CitroBio en_US
dc.title Treatments for hinge ligament disease in juvenile Pacific oysters (Crassostrea gigas) en_US
dc.type Thesis en_US
dc.description.program Fisheries Biology en_US

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