Aspects of the biology of the porbeagle shark (Lamna nasus) in the upper Bay of Fundy determined through a recreational catch-and-release fishery

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dc.contributor.advisorTurnbull, Steven
dc.contributor.advisorTerhune, John
dc.contributor.authorPratt, Joseph
dc.date.accessioned2023-03-01T16:32:58Z
dc.date.available2023-03-01T16:32:58Z
dc.date.issued2012
dc.date.updated2020-06-12T00:00:00Z
dc.description.abstractThis research represents the first study of Upper Bay of Fundy pelagic sharks. Sampling occurred over three summers (2008-2010) in conjunction with a catch-and-release charter operation (Sharks Unlimited) sailing out of Alma, New Brunswick. Eighty-eight sharks were encountered over the three years, with 58, 16, and 14 shark encounters in 2008, 2009, and 2010 respectively. All but one of the sharks identified to species were porbeagle (Lamna nasus). Total length of the 44 landed sharks ranged from 102-265 cm, and landed sharks were similarly sized (p = 0.940), with the 2008 season showing a significant (p < 0.001) female: male bias. Male sharks were large enough to be considered sexually mature (90% ), while females were not (14.7% ). Tide state was the only environmental variable found to play a significant (p < 0.001) role in shark encounter rate. Distribution patterns showed a preference for a ridge along the New Brunswick shoreline. Only one tagged shark has been recaptured to date, nearly two years after initial tagging
dc.description.copyright©Joseph Pratt, 2012
dc.description.noteScanned from archival print submission.
dc.formattext/xml
dc.format.extentix, 65 pages
dc.format.mediumelectronic
dc.identifier.oclc(OCoLC)1341673228en
dc.identifier.otherThesis 9028
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/14083
dc.language.isoen_CA
dc.publisherUniversity of New Brunswick
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subject.disciplineBiology
dc.subject.lcshLamna nasus--New Brunswick--Alma.en
dc.subject.lcshMarine ecology--New Brunswick--Alma.en
dc.subject.lcshShark fishing--New Brunswick--Alma.en
dc.titleAspects of the biology of the porbeagle shark (Lamna nasus) in the upper Bay of Fundy determined through a recreational catch-and-release fishery
dc.typemaster thesis
thesis.degree.disciplineBiology
thesis.degree.fullnameMaster of Science
thesis.degree.grantorUniversity of New Brunswick
thesis.degree.levelmasters
thesis.degree.nameM.Sc.

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