Reports of the increasing incidence of male infertility paired with decreasing semen quality
have triggered studies on the effects of lifestyle and environmental factors on the male …

During recent years, an increasing percentage of male infertility has to be attributed to an
array of environmental, health and lifestyle factors. Male infertility is likely to be affected by …

The Fourth Edition of Knobil & Neill continues to serve as a reference aid for research, to
provide the historical context to current research, and most importantly as an aid for …

Photoperiodism is a process whereby organisms are able to use both absolute measures of
day length and the direction of day length change as a basis for regulating seasonal …

Unlike most domestic livestock species, sheep are widely known as an animal with marked
seasonality of breeding activity. The annual cycle of daily photoperiod has been identified as …

This review summarizes the evidence showing that the duration of the nocturnal secretory
profile of pineal melatonin (MEL) is critical for eliciting seasonally appropriate reproductive …

In mammals, photoperiodic information is transformed into a melatonin secretory rhythm in
the pineal gland (high levels at night, low levels during the day). Melatonin exerts its effects …

The safety of human exposure to an ever-increasing number and diversity of
electromagnetic field (EMF) sources both at work and at home has become a public health …

Long term changes in the secretion of prolactin were monitored in groups of hypothalamo‐
pituitary disconnected rams (HPD rams, n= 8) and control rams (HPD sham‐operated and …

In seasonal species, various physiological processes including reproduction are organized
by photoperiod via melatonin, but the mechanisms of melatonin action are still unknown. In …