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The Effect of Environmental Complexi...

Singh, Amardeep.

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The Effect of Environmental Complexity on the Purging of Deleterious Mutations.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The Effect of Environmental Complexity on the Purging of Deleterious Mutations./
Author:	Singh, Amardeep.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	53 p.
Notes:	Source: Masters Abstracts International, Volume: 55-04.
Contained By:	Masters Abstracts International55-04(E).
Subject:	Evolution & development. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10044005
ISBN:	9781339554587

The Effect of Environmental Complexity on the Purging of Deleterious Mutations.
Singh, Amardeep.

The Effect of Environmental Complexity on the Purging of Deleterious Mutations. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 53 p.

Source: Masters Abstracts International, Volume: 55-04.

Thesis (M.Sc.)--University of Toronto (Canada), 2016.

Mutations at condition influencing loci are expected to be maladaptive with respect to non-sexual fitness and also negatively affect mating success. Natural and sexual selection should thus act concordantly at these loci. Recent studies find male preferential harassment of high-condition females reduces their fitness relative to low-condition females. Thus, sexual selection appears to hinder natural selection. The ecologically simple environments of these studies exaggerate male harassment towards high-condition females. I tested the effects of environmental complexity in reducing the negative sexual conflict effects that might cause a misalignment of natural and sexual selection. Using Drosophila melanogaster, I quantified mating interactions in environments differing in complexity. I measured the purging rate of mutations from populations evolving in these environments. I found that environmental complexity modulates the rate at which mutations are purged and speculate on a causal mechanism that implicates a concordance of natural and sexual selection to explain these results.

ISBN: 9781339554587Subjects--Topical Terms:

3172418
Evolution & development.

The Effect of Environmental Complexity on the Purging of Deleterious Mutations.
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500 $a Adviser: Aneil F. Agrawal.
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520 $a Mutations at condition influencing loci are expected to be maladaptive with respect to non-sexual fitness and also negatively affect mating success. Natural and sexual selection should thus act concordantly at these loci. Recent studies find male preferential harassment of high-condition females reduces their fitness relative to low-condition females. Thus, sexual selection appears to hinder natural selection. The ecologically simple environments of these studies exaggerate male harassment towards high-condition females. I tested the effects of environmental complexity in reducing the negative sexual conflict effects that might cause a misalignment of natural and sexual selection. Using Drosophila melanogaster, I quantified mating interactions in environments differing in complexity. I measured the purging rate of mutations from populations evolving in these environments. I found that environmental complexity modulates the rate at which mutations are purged and speculate on a causal mechanism that implicates a concordance of natural and sexual selection to explain these results.
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