نتایج جستجو برای: reproductive
تعداد نتایج: 96218 فیلتر نتایج به سال:
Sexual conflict leading to sexual antagonistic coevolution has been hypothesized to drive reproductive isolation in allopatric populations and hence lead to speciation. However, the generality of this speciation mechanism is under debate. We used experimental evolution in the bulb mite Rhizoglyphusrobini to investigate whether sexual conflict promotes reproductive isolation measured comprehensi...
The dominant conceptual framework for understanding reproductive behaviour is highly individualistic. In this article, it is demonstrated that such a conceptualization is flawed, as behaviour is shaped by social relations and institutions. Using ethnographic evidence, the value of a social analysis of the local contexts of reproductive health is highlighted. A framework is set out for conductin...
In view of the persistent claim of Australian Vietnam veterans that their health and that of their children were adversely affected, aspects of reproductive behaviour and the distribution of disease and disability in family units were investigated in a sample of Tasmanian veterans and another group chosen for comparison of selected characteristics. One third of veterans reported serious health ...
Mate choice is considered an important influence in the evolution of mating signals and other sexual traits, and--since divergence in sexual traits causes reproductive isolation--it can be an agent of population divergence. The importance of mate choice in signal evolution can be evaluated by comparing male signal traits with female preference functions, taking into account the shape and streng...
In some organisms longevity, growth, and developmental rate are improved when they are maintained on a light/dark cycle, the period of which "resonates" optimally with the period of the endogenous circadian clock. However, to our knowledge no studies have demonstrated that reproductive fitness per se is improved by resonance between the endogenous clock and the environmental cycle. We tested th...
In this article, we aim to contextualize gynecological problems within a broader health and social context, expanding the lens beyond reproductive health. Questionnaires were administered to 1,869 ever-married women aged 15 to 59 that included questions on living, general health, and gynecological problems. These questions were open-ended, allowing women to respond in their own words. Women rep...
Reproductive health knowledge, attitudes and practices of Iranian and Afghan men in Tehran Province.
This study was carried out in south-west Tehran province to assess the knowledge, attitudes and practices of men, Iranians and Afghan refugees, regarding reproductive health. A questionnaire was used for the assessment. Mean scores for knowledge, attitudes and practices for Iranians were 4.38/30, 13.89/20 and 12.99/31 respectively; for Afghans the scores were 3.79/30, 11.66/20 and 11.88/31. Alt...
Coral spawning on the oceanic reef systems of north-western Australia was recently discovered during autumn and spring, but the degree to which species and particularly colonies participated in one or both of these spawnings was unknown. At the largest of the oceanic reef systems, the participation by colonies in the two discrete spawning events was investigated over three years in 13 species o...
An increasing number of contemporary research publications acknowledge the influence of religion and culture on sexual and reproductive behavior and health-care utilization. It is currently hypothesized that religious influences can partly explain disparities in sexual and reproductive health outcomes. In this paper, we will pay particular attention to Muslims in sexual and reproductive health ...
While there has been increased attention to youth-friendly reproductive health services, little research has been conducted among adolescents in developing countries to assess what characteristics of reproductive health services are most important to them. Large scale population-based surveys were carried out among youth in Kenya and Zimbabwe. A list of characteristics that programmers often th...
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