Diet has a profound direct and indirect effect on reproductive success in both sexes. Variation in diet quality and quantity can significantly alter the capacity of females to lay eggs and of males to deliver courtship. Here, we tested the effect of dietary resource limitation on the ability of male Drosophila melanogaster to respond adaptively to rivals by extending their mating duration. Prev...

The moss froglet Bryobatrachus nimbus is a recently described terrestrial and direct anuran from southwestern Tasmania. A 17-stage table based on changes in external was developed in order to calculate development rates and larval This staging demonstrated that development was not predominantly intracapsular as earlier reported. Instead, larvae hatch from the capsule two to three months after o...

BACKGROUND The durations of untreated stage 1 (early stage, haemo-lymphatic) and stage 2 (late stage, meningo-encephalitic) human African trypanosomiasis (sleeping sickness) due to Trypanosoma brucei gambiense are poorly quantified, but key to predicting the impact of screening on transmission. Here, we outline a method to estimate these parameters. METHODS We first model the duration of stag...

Women have been an integral part of United States space crews since the initial flight of Dr. Sally Ride in 1983, and a total of 40 women have been selected as U.S. astronauts. This article examines the reproductive and gynecological aspects of selecting, training, medically certifying, and flying women in space. Gynecological data from the astronaut selection cycles in 1991 to 1997 are reviewe...

Climate warming can shift the reproductive phenology of plant, and hence dramatically reduced the reproductive capacity both of density-dependent and -independent plant species. But it is still unclear how climate warming affects flowering phenology and reproductive allocation of plant under different planting densities. Here, we assessed the impact of simulated warming on flowering phenology a...

Early in the process of speciation, reproductive failures occur in hybrid animals between genetically diverged populations. The sterile hybrid animals are often males in mammals and they exhibit spermatogenic disruptions, resulting in decreased number and/or malformation of mature sperms. Despite the generality of this phenomenon, comparative study of phenotypes in hybrid males from various cro...

BACKGROUND Thin endometrium is associated with poor reproductive outcomes; estrogen treatment can increase endometrial thickness (EMT). The aim of this retrospective cohort study was to investigate the factors influencing the effectiveness of estrogen treatment and reproductive outcomes after the treatment in patients with thin endometrium. METHODS Relevant clinical data of 101 patients with ...

Abstract All animals, including carnivores, adapt their daily activity duration and distribution to satisfy food demands, breed, or avoid mortality risk. We used the kernel density method estimate movement levels patterns of jaguars in Hato Piñero, Venezuelan Western Llanos, based on 3,656 jaguar detection time records from two a half years camera trapping. Jaguars were active for 11.7 h per da...

Background: Although hydro-alcoholic extracts of Anethum graveolens L. had Anticonvulsants effect on PTZ-induced kindling seizure behavior, but on the amygdala kindling in rats induced seizure has not been investigated. Objective: In this study, we evaluated the chronic effects of hydro-alcoholic extracts of Anethum graveolens L. on seizures using electrical amygdala kindling model. Methods: ...