The interplay of neural and hormonal mechanisms activated by entero- and extero-receptors biases the selection of actions by decision making neuronal circuits. The reproductive behavior of acoustically communicating grasshoppers, which is regulated by short-term neural and longer-term hormonal mechanisms, has frequently been used to study the cellular and physiological processes that select par...

BACKGROUND Infertility is a reproductive health problem and its prevalence is increasing in developing countries. This problem has some significant effects on the sexual behaviors of infertile women, especially during infertility treatment periods. Discovering the existing beliefs in the field of sexual and reproductive health and also determining the misconceptions would define the educational...

background: adolescence is a period of overwhelming changes and challenges, which expose the adolescents to high-risk behaviors. risky sexual relationship is one of these behaviors that entails physical risks and psychosocial harms. various factors have been recognized to shape sexual behaviors in adolescents. this paper is an attempt to investigate the factors contributing to high-risk sexual ...

to compare the level of knowledge on reproductive health among urban and rural women of selected area of bangladesh.a descriptive cross-sectional study was undertaken among 200 women selected purposively from different rural and urban areas of bangladesh. data were collected using a semi-structured interviewer-administered questionnaire by face to face interview. knowledge level was analyzed ac...

The reproductive behaviors and mating systems of the fruit-infesting species of the Dacinae tribes Ceratitidini and Dacini are increasingly well understood, while in the non-frugivorous tribe Gastrozonini, data are lacking. In the present study, the reproductive behavior of Anoplomus rufipes from North Thailand was studied in the field, other behaviors also in the laboratory. A. rufipes mated o...

Mating induces changes in the receptivity and egg-laying behavior in Drosophila females, primarily due to a peptide pheromone called sex peptide which is transferred with the sperm into the female reproductive tract during copulation. Whereas sex peptide is generally believed to modulate fruitless-GAL4-expressing neurons in the central nervous system to produce behavioral changes, we found that...

CONTEXT Little research links adolescent risk behaviors to reproductive health outcomes beyond adolescence, although young adults--men and women in their early 20s--bear a disproportionate burden of STDs and unintended childbearing. METHODS To assess whether individuals who engaged in risk behaviors during adolescence had increased risk of negative reproductive health outcomes in young adulth...

The ability of an animal to respond with appropriate defensive behaviors when confronted with an immediate threat can affect its survival and reproductive success. In the roughskin newt (Taricha granulosa), exogenous corticosterone (CORT) rapidly blocks and vasotocin (VT) enhances reproductive behaviors (mainly clasping behavior). Electrophysiological studies have shown that pretreatment of mal...

In "Testing the Kin Selection Theory: Who Controls the Investments?" Bert Hölldobler and Edward Osborne Wilson discussed the predictive power of kin selection theory, a theory about the evolution [3] of social behaviors. As part of Hölldobler and Wilson's 1990 book titled The Ants, Hölldobler and Wilson compared predictions about the reproductive practices of ants to data about the reproductive...

Non-avian dinosaur reproductive and parenting behaviors were mostly similar to those of extant archosaurs. Non-avian dinosaurs were probably sexually dimorphic and some may have engaged in hierarchical rituals. Non-avian coelurosaurs (e.g. Troodontidae, Oviraptorosauria) had two active oviducts, each of which produced single eggs on a daily or greater time scale. The eggs of non-coelurosaurian ...