J. P. Evans

Publications168
h-index46
Citations6,321
Highly Influential Citations373
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Discrimination between climate and human-induced dryland degradation.
In this study we present a technique to discriminate between climate or human-induced dryland degradation, based on evaluations of AVHRR NDVI data and rainfall data. Since dryland areas typically… Expand
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Sperm competition: linking form to function
BackgroundUsing information from physics, biomechanics and evolutionary biology, we explore the implications of physical constraints on sperm performance, and review empirical evidence for links… Expand
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Ecology and Evolution of Poeciliid Fishes
The history of biology is populated by numerous model species or organisms. But few vertebrate groups have aided evolutionary and ecological research more than the live-bearing fishes of the family… Expand
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The genetic basis of traits regulating sperm competition and polyandry: can selection favour the evolution of good- and sexy-sperm?
The good-sperm and sexy-sperm (GS-SS) hypotheses predict that female multiple mating (polyandry) can fuel sexual selection for heritable male traits that promote success in sperm competition. A major… Expand
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Intraspecific evidence from guppies for correlated patterns of male and female genital trait diversification
The role of sexual selection in fuelling genital evolution is becoming increasingly apparent from comparative studies revealing interspecific divergence in male genitalia and evolutionary… Expand
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Experimental evidence that high levels of inbreeding depress sperm competitiveness
The effects of inbreeding on sperm quantity and quality are among the most dramatic examples of inbreeding depression. The extent to which inbreeding depression results in decreased fertilization… Expand
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Sperm traits and fertilization success of male and sex-reversed female rainbow trout (Oncorhynchus mykiss)
Abstract Sperm motility, density, adenosine triphosphate (ATP) concentration, and fertilization rates of sex-reversed female (XX-male) rainbow trout ( Oncorhynchus mykiss ) were compared to those of… Expand
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Linguistic pitch analysis using functional principal component mixed effect models
Fundamental frequency (F0, broadly 'pitch') is an integral part of spoken human language; however, a comprehensive quantitative model for F0 can be a challenge to formulate owing to the large number… Expand
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Male display rate reveals ejaculate characteristics in the Trinidadian guppy, Poecilia reticulata.
Previous work (Reynolds and Gross 1992) has demonstrated that mate choice enables female guppies, Poecilia reticulata, to obtain heritable benefits (‘good genes’) for their offspring. It is not yet… Expand
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Sexual Selection and the Evolution of Egg-Sperm Interactions in Broadcast-Spawning Invertebrates
Many marine invertebrate taxa are broadcast spawners, where multiple individuals release their gametes into the water for external fertilization, often in the presence of gametes from… Expand
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