Though sex differences in animal behavior are ubiquitous, their neural and genetic underpinnings remain poorly understood. In particular, the role of functional differences in the neural circuitry that is shared by both sexes has not been extensively investigated. We have addressed these issues with C. elegans olfaction, a simple innate behavior mediated by sexually isomorphic neurons. Though m...

Youth with substantial sexual behavior problems (n = 166) were compared with youth from the same sample with few sexual behavior problems (n = 413) and with no sexual behavior problems (n = 943). It was hypothesized that youth with significant sexual behavior problems would be characterized by higher rates of sexual and physical abuse and higher rates of internalizing problems relative to youth...

Background: Evaluation and treatment of infertility is critical to can be affected all aspects of life, particularly women, the Including how their knowledge of fertility and assisted reproduction treatment can disrupt marital and sexual Infertile women. Hence this qualitative study was performed to explore experiences of infertile women about sexual life. Materials and Methods: This is a quali...

Castration of male animal's leads to a reduction in aggressive behavior, which animals will avoid wasting energy resulting to economic production of the animal, grows. It also reduces damage and bruising animals and increases normed meat producing at slaughter. In this study, 20 lambs Ghezel breed in four age groups, group 1: one month (n = 4), group 2: two months (n = 4) Group 3: three months ...

background increased prevalent use of methamphetamine is a global public challenge. information on drug use can be helpful in preventing high-risk behavior related to drug abuse. objectives this study aims to investigate the sexual function changes related to methamphetamine use in the male clients of public and private addiction treatment centers. patients and methods in this qualitative study...

Background: Trichomoniasis is a worldwide sexually transmitted disease (STD), and is associated with important public health problems, including enhancement of HIV transmission. The prevalence of the parasite, Trichomonas vaginalis, depends on host factors such as age, sexual activity, number of sexual partners and sexual behavior. The aim of the study was to evaluate the prevalence of trichomo...

It is known that olfaction is essential for the occurrence of sexual behavior in male goldfish. Sex pheromones from ovulatory females elicit male sexual behavior, chasing, and sperm releasing act. In female goldfish, ovarian prostaglandin F2α (PGF) elicits female sexual behavior, egg releasing act. It has been considered that olfaction does not affect sexual behavior in female goldfish. In the ...

Developing a sexual self-concept is an important developmental task of adolescence; however, little empirical evidence describes this development, nor how these changes are related to development in sexual behavior. Using longitudinal cohort data from adolescent women, we invoked latent growth curve analysis to: (1) examine reciprocal development in sexual self-concept (sexual openness, sexual ...