The grass-cutting ant Acromyrmex balzani conducts nuptial flights at dusk, often during light rain. The daily timing of flights is invariant, but annual occurrence is dependent upon meterological conditions. Males form ...

The antioxidant properties of yerba mate has long been known and studied, the main reason is regarding its many therapeutic principles. Its phenolics content, main source of antioxidant agents, can also be applied in the ...

The mating behavior of the coffee berry borer, (Ferrari), was observed under laboratory conditions. Pairs of adult virgin male and female beetles were placed in the wells of a polystyrene microtiter plate, one pair per ...

Competition among males can be a decisive factor for successful mating in anuranexplosive breeders with a male-biased population sex ratio. The Yungas Red-belly toad Melanophryniscus rubriventris (Vellard, 1947) is an ...

Polygynous males increase their reproductive success by fertilizing as many females as possible. However, this strategy can lead to costs for the males. This study focused on an atypical wolf spider that lives in webs, ...

We have studied an agent model which presents the emergence of sexual barriers through the onset of assortative mating, a condition that might lead to sympatric speciation. In the model, individuals are characterized by ...

In nature, behavioural and physiological processes involved in mating may entail different costs and benefits for males and females. However, it has been hypothesized that sexual interactions may have additional costs for ...