Copulating males usually insert their penis into the female and ejaculate in her reproductive tract; but in some species, males are more invasive, puncturing the female body-wall and inseminating directly into her body-cavity. A spider has just been added to this list and new perspectives provided on why males harm females during copulation in the first place.

The goal of total phallic reconstruction in the genetic male is the creation of a sensate and cosmetically acceptable phallus with an incorporated neo-urethra that allows the patient to void while standing, engage in penetrative sexual intercourse with confidence and ejaculate in the vagina.

BACKGROUND The magnitude of the current Zika virus (ZIKV) epidemic has led to a declaration of a Public Health Emergency of International Concern by the WHO. Findings of viable viral particles in semen for several weeks are corroborating reports of sexual transmission of ZIKV. Serious consequences of a positive diagnostic result particularly in the pregnant patient are calling for precise diagn...

The phylogenetic order Squamata has many representatives that could benefit from the use of semen preservation as a tool for assisting conservation. To date, few studies have been made evaluating the potential for collecting and preserving semen from snakes. The objectives of this study were to characterize semen parameters of the corn snake (Elaphe guttata), including appearance, volume, conce...

During the selection of parents future bulls meat breeds, problem improving main signs productivity is a priority. Search for techniques that would additionally influence effectiveness using conventional breeding methods determines relevance this study. The purpose study was to determine parent pairs based on antigens B blood group system results lifelong use Ukrainian beef cattle, created by m...