How Long to Read Sexual Selection and the Evolution of Sexual Dimorphism [microform]

How Long Does it Take to Read Sexual Selection and the Evolution of Sexual Dimorphism [microform]?

It takes the average reader 10 hours and 6 minutes to read Sexual Selection and the Evolution of Sexual Dimorphism [microform] by Russell Bonduriansky

Assuming a reading speed of 250 words per minute. Learn more

Description

I first examined the diversity and interactions of sexual selection mechanisms. Among these, male mate choice is especially poorly understood. By synthesizing relevant theory and data, I found that male choosiness is predicted and observed in a wide variety of taxa. I also investigated the co-occurrence of multiple sexual selection mechanisms in seven species of piophilid flies. Focusing on one species, the sexually dimorphic fly Prochyliza xanthostoma, I investigated how multiple sexual selection mechanisms interact. I found that males with relatively elongated heads were at a disadvantage in combat, but were attractive to females and transferred more sperm. Thus, contrary to long-held assumptions, multiple mechanisms of sexual selection may be in conflict. Moreover, P. xanthostoma females obtained direct fitness benefits by ingesting part of the ejaculate, which suggests that male head shape may be an honest signal of mate quality. I used both theoretical and empirical approaches to investigate the evolutionary consequences of sexual selection. Existing theory predicts positive allometry in most sexually selected traits. However, I developed new theory (with Troy Day) which suggests that allometric patterns (and associated phenotypic parameters) are difficult to predict without detailed knowledge of fitness functions. I also developed theory on the evolution of genetic architecture in sexually selected traits, predicting that intra-locus sexual conflict may select for genomic imprinting, favouring silencing of trait alleles inherited from the weakly-selected or opposite-sex parent. I used P. xanthostoma to compare the phenotypic expression and genetic architecture of sexually dimorphic traits employed in sexual competition with other traits that are not. Male head shape exhibited strong condition dependence, potentially explaining the correlation between male head shape and ejaculate size. As predicted by theory, condition dependence increased with the degree of trait exaggeration. Results also suggested an inter-sexual genetic correlation for condition dependence. Trait inter-sexual genetic correlation decreased with degree of trait sexual dimorphism, as predicted by evolutionary models. However, two male sexual traits exhibited striking differences between maternal and paternal heritabilities. These patterns contradict ordinary Mendelian assumptions, but support the new imprinting theory. In this dissertation, I ask how sexual selection shapes the phenotypes and genetic architectures of sexually dimorphic traits.

How long is Sexual Selection and the Evolution of Sexual Dimorphism [microform]?

Sexual Selection and the Evolution of Sexual Dimorphism [microform] by Russell Bonduriansky is 602 pages long, and a total of 151,704 words.

This makes it 203% the length of the average book. It also has 185% more words than the average book.

How Long Does it Take to Read Sexual Selection and the Evolution of Sexual Dimorphism [microform] Aloud?

The average oral reading speed is 183 words per minute. This means it takes 13 hours and 48 minutes to read Sexual Selection and the Evolution of Sexual Dimorphism [microform] aloud.

What Reading Level is Sexual Selection and the Evolution of Sexual Dimorphism [microform]?

Sexual Selection and the Evolution of Sexual Dimorphism [microform] is suitable for students ages 12 and up.

Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.

When deciding what to show young students always use your best judgement and consult a professional.

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