An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations
Relations among bull age, sex ratio and reproductive parameters in British Columbia moose populations were investigated. Specifically, the effects that bull age-selective harvest regulations versus non-selective harvest regulations might have on pregnancy rate, conception timing, and recruitment wer...
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1991
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ftunivbritcolcir:oai:circle.library.ubc.ca:2429/1692 2023-05-15T13:13:04+02:00 An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations Thomson, R. N. (Robert Newton) 1991 2018473 bytes application/pdf http://hdl.handle.net/2429/1692 eng eng For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Text Thesis/Dissertation 1991 ftunivbritcolcir 2019-10-15T17:43:54Z Relations among bull age, sex ratio and reproductive parameters in British Columbia moose populations were investigated. Specifically, the effects that bull age-selective harvest regulations versus non-selective harvest regulations might have on pregnancy rate, conception timing, and recruitment were compared. Existing harvest, inventory, and reproductive data from four management subregions were analyzed. There was no evidence that reductions in the prime and senior-aged bull social classes in a population resulted in reduced pregnancy rates or later conception timing. No evidence was found that greatly skewed sex ratios in favour of cows resulted in reduced pregnancy rates. No relation was found between bull/100 cow ratios and calf/100 cows in the winter inventory. Forestry, Faculty of Graduate Thesis Alces alces University of British Columbia: cIRcle - UBC's Information Repository |
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Open Polar |
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University of British Columbia: cIRcle - UBC's Information Repository |
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ftunivbritcolcir |
language |
English |
description |
Relations among bull age, sex ratio and reproductive parameters in British Columbia moose populations were investigated. Specifically, the effects that bull age-selective harvest regulations versus non-selective harvest regulations might have on pregnancy rate, conception timing, and recruitment were compared. Existing harvest, inventory, and reproductive data from four management subregions were analyzed. There was no evidence that reductions in the prime and senior-aged bull social classes in a population resulted in reduced pregnancy rates or later conception timing. No evidence was found that greatly skewed sex ratios in favour of cows resulted in reduced pregnancy rates. No relation was found between bull/100 cow ratios and calf/100 cows in the winter inventory. Forestry, Faculty of Graduate |
format |
Thesis |
author |
Thomson, R. N. (Robert Newton) |
spellingShingle |
Thomson, R. N. (Robert Newton) An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
author_facet |
Thomson, R. N. (Robert Newton) |
author_sort |
Thomson, R. N. (Robert Newton) |
title |
An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
title_short |
An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
title_full |
An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
title_fullStr |
An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
title_full_unstemmed |
An analysis of the influence of male age and sex ratio on reproduction in British Columbia moose (Alces alces L.) populations |
title_sort |
analysis of the influence of male age and sex ratio on reproduction in british columbia moose (alces alces l.) populations |
publishDate |
1991 |
url |
http://hdl.handle.net/2429/1692 |
genre |
Alces alces |
genre_facet |
Alces alces |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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1766255845175197696 |