Investigations into mortality in juvenile Haliotis kamtschatkana (northern abalone) and factors that affect outplanting

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dc.contributor.authorGriffiths, Allison Muriel
dc.contributor.supervisorGosselin, Louis Andre
dc.contributor.supervisorPage, Louise Roberta
dc.date.accessioned2009-11-09T22:32:07Z
dc.date.available2009-11-09T22:32:07Z
dc.date.copyright2006en
dc.date.issued2009-11-09T22:32:07Z
dc.degree.departmentDepartment of Biology
dc.degree.levelMaster of Science M.Sc.en
dc.description.abstractThe predation pressures on juvenile Haliotis kamtschatkana, northern abalone, in Barkley Sound. British Columbia, were investigated. Thirty-seven potential predators were tested in the laboratory to determine if they would consume juvenile abalone 1- 25 mm shell length (SL). Six of these potential predators consumed > 10 % of the abalone offered to them and were considered major predators. Natural mortality for juvenile H. kanntschatkana was then estimated by outplanting calcein marked and bee tagged hatchery-reared abalone at field sites. Calcein concentrations between 20 40 mg/L produced clear fluorescent marks for 3- 5 mm SL abalone when exposed to a double calcein marking procedure and abalone > 15 mm SL immersed in calcein for 72 h showed the most distinct marks. Recoveries of outplanted abalone were highest (24%) for 15.1- 20 mm juvenile abalone. I recommend outplanting juvenile abalone larger than 12 mm to increase chances of survivorship in the wild.en
dc.identifier.urihttp://hdl.handle.net/1828/1828
dc.languageEnglisheng
dc.language.isoenen
dc.rightsAvailable to the World Wide Weben
dc.subjectPinto abaloneen
dc.subjectBritish Columbiaen
dc.subjectVancouver Islanden
dc.subjectBarkley Sounden
dc.subject.lcshUVic Subject Index::Sciences and Engineering::Biology::Oceanographyen
dc.titleInvestigations into mortality in juvenile Haliotis kamtschatkana (northern abalone) and factors that affect outplantingen
dc.typeThesisen

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