Memorial University DAI: An investigation into different sampling techniques and geographic variation in size-fecundity parameters of the American lobster, H. americanus

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Title	An investigation into different sampling techniques and geographic variation in size-fecundity parameters of the American lobster, H. americanus
Author	Currie, Jens Jacob
Description	Thesis (M.Sc.)--Memorial University of Newfoundland, 2010. Biology
Date	2010
Pagination	viii, 61 leaves : ill., maps.
Subject	American lobster--Fertility; American lobster--Geographical distribution; American lobster--Reproduction; American lobster--Size
Degree	M.Sc.
Degree Grantor	Memorial University of Newfoundland. Dept. of Biology
Discipline	Biology
Language	Eng
Notes	Bibliography: leaves 48-53.
Abstract	This thesis focuses on two main aspects, the first of which looks at non-invasive sampling techniques to estimate fecundity and the second looks at a model that can predict size-fecundity parameters from latitude. The non-invasive sampling techniques estimate fecundity for ovigerous American lobster (Homarus americanus) based on measurements and digital image analysis. Non-invasive fecundity estimates can now be made that require the removal of only ten eggs per female. Applications of this technique includes the evaluation of the efficacy of conservation measures, such as v-notching or the establishment of closed areas, aimed at increasing egg production, where differences in egg production can be quantified without the use of destructive sampling techniques. In order to create a model able to predict size-fecundity relationships throughout the species range, fecundity estimates for American lobster (H. americanus) from 11 different locations in the Northwest Atlantic (from the Strait of Belle Isle, Newfoundland to Buzzards Bay, Massachusetts) were obtained. The data were then analyzed for geographic variation and a latitudinal gradient was found in the size-fecundity parameter b. This was then used to create a model that can predict size-fecundity relationships from latitude. This model will allow for future fecundity estimates to be made, utilizing size data from latitude for any population in the Northwest Atlantic.
Type	Text
Resource Type	Electronic thesis or dissertation
Format	Image/jpeg; Application/pdf
Source	Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifier	a3497954
Rights	The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
Collection	Electronic Theses and Dissertations
Scanning Status	Completed
PDF File	(6.63 MB) -- http://collections.mun.ca/PDFs/theses/Currie_JensJacob.pdf
CONTENTdm file name	6065.cpd