Natural selection and sexual selection are usually seen as either two different and separate processes or with sexual selection being a subset of natural selection but distinct from other processes such as kin selection. In this paper, we investigate the possibility of a connection between discriminatory altruistic behaviors consistent with kin selection and the sex-specific criteria that men a...

PRINCIPLES Women of reproductive age with cancer fear for their childbearing potential as a result of the cancer itself and chemo- and/or radiation-therapy. METHODS Starting in 2006, a dedicated task force was set up at Lausanne University Hospital (CHUV) to handle all cancer and fertility issues and, in certain cases, offer access to emergency assisted reproductive technologies (ART) to pres...

We evaluated the relationships between proteins in cauda epididymis fluid (CEF) and fertility scores of dairy bulls. Fertility was expressed as the percentage point deviation (PD) of bull nonreturn rate from the average fertility of all bulls at an artificial insemination center. The number of services for each bull ranged from 1074 to 52 820, and PD values ranged from +7.7% to -6.6%. CEF from ...

A consensus exists that the basic semen analysis is the most important tool in male fertility investigation. In the last two decades, researchers and clinicians alike have relied on the World Health Organization (WHO) criteria for the interpretation of basic semen analysis. Nevertheless, the criteria for what constitutes a normal semen analysis remain controversial. Although a single test such ...

Uterine artery embolization (UAE) research has largely been focused on women over 40 years, yet women of reproductive age undergo UAE without any increased morbidity. Some physicians refrain from recommending UAE to women in this age group because of some research findings showing a negative effect on fertility. This review presents a comprehensive discussion of the fertility potential of women...

The increasing confidence with the techniques of oocyte and ovarian cortex freezing has prompted their potential use for patient categories other than those at risk of early menopause due to cancer treatments. Women affected by every iatrogenic or pathologic condition known to compromise ovarian function severely have been considered as potential candidates for fertility preservation. Among the...

Selection strategies focusing on milk yield in dairy cattle have generally led to a decline in fertility (Pryce et al. 2004). This fact is due to an antagonistic relationship between production and reproduction, which has been proven via the estimation of genetic correlations in quantitative genetic studies (e.g. König et al. 2009). Novel molecular techniques can be used to get a deeper insight...

In the past, cancer survivors tended to be most concerned about disease recurrence and treatment side effects. As survival rates have increased, however, patients are now also concerned about quality-of-life issues such as preserving fertility potential. It is well known that cancer treatment adversely affects male fertility via direct effects on the testis and/or through the endocrine glands. ...

Endometriois has been associated with infertility; however, the mechanisms by which it affects fertility are still not fully understood. This article reviews the proposed mechanisms of endometriosis pathogenesis, its effects on fertility, and treatments of endometriosis-associated infertility. Theories on the cause of the disease include retrograde menstruation, coelomic metaplasia, altered imm...

Infertility can arise as a consequence of treatment of oncological conditions. (5) The parallel and continued improvement in both, the management of oncology and fertility cases in recent times, has brought to the fore-front the potential for fertility preservation in patients being treated for cancer. (26)(27) Clearly Oncologists must be aware of situations where their treatment wills affect f...