The seminal fluid is a complex medium containing a great variety of molecules, mainly
produced by sex accessory glands, and also cells other than spermatozoa (eg leucocytes) …

Testosterone (T) is a key mediator in the expression of numerous morphological and
behavioural traits in mammals, but the factors underlying individual variation in circulating T …

White rhinoceroses suffer from a low reproductive rate in captivity. Intensive efforts to
propagate specifically the northern white rhinoceros have been very limited. The dismal …

In mature male seasonal breeders, the circannual cycles of testicular growth and involution
involve significant changes in structure and function of both the tubular and interstitial …

The present study analyses the effects of increasing and decreasing photoperiods on the
semen quality of 20 selected postpubertal Landrace boars. The boars were exposed …

Environmental variation can influence the reproductive success of species managed under
human care and in the wild, yet the mechanisms underlying this phenomenon remain …

White rhinoceroses suffer from a low rate of reproduction in captivity. This study examines
the role of male reproductive function as a contributing factor. We used ultrasonography to …

The purpose of this study was to validate noninvasive endocrine monitoring techniques for
Pampas deer and to evaluate seasonal changes in testicular steroidogenic activity and their …

The outcome of sperm competition is influenced by the relative quantity and quality of sperm
among competing ejaculates. Whereas it is well established that individual ejaculate traits …

This study compares morphological changes, performed with real-time transrectal
ultrasonography, of testis and accessory glands and seasonal endocrine changes in a wild …