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Preferences, signals, and evolution:...

Servedio, Maria Rose.

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Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration./
作者:	Servedio, Maria Rose.
面頁冊數:	173 p.
附註:	Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4676.
Contained By:	Dissertation Abstracts International59-09B.
標題:	Biology, Zoology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9905836
ISBN:	059903453X

Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration.
Servedio, Maria Rose.

Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration. - 173 p.

Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4676.

Thesis (Ph.D.)--The University of Texas at Austin, 1998.

Mathematical models are used to explore evolutionary questions in three areas of behavioral ecology: mate choice copying, reinforcement, and aposematic coloration. Each study examines the evolution of part of a system of signals and preferences. The questions explored are difficult to study empirically, but much can be learned by a theoretical approach.

ISBN: 059903453XSubjects--Topical Terms:

1018632
Biology, Zoology.

Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration.
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245 1 0 $a Preferences, signals, and evolution: Theoretical studies of mate choice copying, reinforcement, and aposematic coloration.
300 $a 173 p.
500 $a Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4676.
500 $a Supervisor: Mark Kirkpatrick.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 1998.
520 $a Mathematical models are used to explore evolutionary questions in three areas of behavioral ecology: mate choice copying, reinforcement, and aposematic coloration. Each study examines the evolution of part of a system of signals and preferences. The questions explored are difficult to study empirically, but much can be learned by a theoretical approach.
520 $a Mate choice copying occurs when a female modifies her mating preference for males with a certain trait, based on her observations of the mate choice of other females. Mate choice copying is found to evolve even if it does not increase female viability or fertility. The copying allele must instead cause females to mate males with higher overall fitness. Former, adaptive scenarios explaining the phenomenon of copying may therefore be superfluous.
520 $a The next two studies examine reinforcement, the evolution of premating isolation between incipient species. First, reinforcement is shown to occur less often as asymmetry in gene flow increases, from symmetric migration between two populations to one-way migration from a continent onto an island. Reinforcement may be rare in peripheral isolates, where gene flow is one-way. Reinforcement is considered to occur in this study when a new female preference allele, for a previously unpreferred male trait characterizing one population, spreads. The second study contrasts this preference model with an assortative mating model of reinforcement, in which a female is more likely to mate with a male that shares her trait phenotype. The genetic associations formed by an assortative mating allele are found to cause it to spread much more easily than a preference allele.
520 $a Finally, predator avoidance learning is shown to heavily influence the evolution of aposematism. When avoidance learning occurs in one trial, warning coloration can evolve either through mutations of large effect or in a stepwise fashion through a series of mutations that slightly increase brightness. When predators learn and forget information gradually, warning coloration can only evolve if bright mutants cross an often high threshold frequency by chance. Aposematic coloration may therefore have evolved in a different manner in dissimilar predator and prey systems.
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