Martín Alejandro Serrano-Meneses

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Odonata (dragonflies and damselflies) exhibit a range of sexual size dimorphism (SSD) that includes species with male-biased (males > females) or female-biased SSD (males < females) and species exhibiting nonterritorial or territorial mating strategies. Here, we use phylogenetic comparative analyses to investigate the influence of sexual selection on SSD in(More)
Altitudinal clines in body size can result from the effects of natural and sexual selection on growth rates and developing times in seasonal environments. Short growing and reproductive seasons constrain the body size that adults can attain and their reproductive success. Little is known about the effects of altitudinal climatic variation on the(More)
Closely related and ecologically similar species that overlap in ranges can coexist through resource partitioning without one pushing the others to extinction through competition. Understanding resource partitioning among species is essential to predicting how species decline can affect the functioning of communities and ecosystems. In this study, we(More)
Courting, accessing, and/or competing for mates are involved in sexual selection by generating differences in mating success. Although courtship behavior should reflect intensity of mating competition and sexual selection, studies that compare courtship behavior across populations/species with different mating systems subject to differing degrees of mating(More)
Animals achieve camouflage through a variety of mechanisms, of which background matching and disruptive coloration are likely the most common. Although many studies have investigated camouflage mechanisms using artificial stimuli and in lab experiments, less work has addressed camouflage in the wild. Here we examine egg camouflage in clutches laid by(More)
Alternative reproductive tactics (ARTs) evolve to maximise fitness by favouring alternative phenotypes when high variance in relative fitness occurs amongst individuals. In the damselfly Hetaerina vulnerata males occur as either territorial or nonterritorial, depending on whether males acquire and defend an area to which females are attracted for(More)
Rabbits nurse inside a nest once/day for 3-5 min. We quantified mother's time inside the nest box (TINB) and milk output as we varied the number and age of pups across lactation. TINB was larger and milk output smaller on lactation days 2, 3, 7, or 8, when one pup (2-3 days old) was provided, but normal on Days 4-6, when suckling eight pups. Maintaining 1,(More)
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