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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
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
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
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
Intraspecific evidence from guppies for correlated patterns of male and female genital trait diversification
- J. P. Evans, C. Gasparini, G. Holwell, I. Ramnarine, T. Pitcher, A. Pilastro
- Biology, Medicine
- Proceedings of the Royal Society B: Biological…
- 7 September 2011
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
Experimental evidence that high levels of inbreeding depress sperm competitiveness
- S. Zajitschek, A. Lindholm, J. P. Evans, R. Brooks
- Biology, Medicine
- Journal of evolutionary biology
- 1 June 2009
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
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
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
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
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