This review provides an updated overview of the seminal plasma composition, and the role
of metabolic and protein components on the sperm function of avian species. In addition, the …

This chapter examines the structure and function of the extratesticular sperm ducts of
vertebrates in terms of their evolutionary development and adaptive significance. Although …

Amphibians and reptiles are experiencing serious declines, with the number of threatened
species and extinctions growing rapidly as the modern biodiversity crisis unfolds. For …

When females copulate with multiple males, paternity is determined by the competitive
ability of a male to access females and by the ability of its ejaculates to out-compete those of …

Exposure to the Roundup has been shown to affect StAR protein and aromatase expression
and activity, pointing out that this herbicide may cause adverse effects in animal …

Birds have long been used as models to investigate the regulation of male reproductive
processes and in particular of testicular function. In many species, the exocrine and …

Competition to achieve paternity has coerced the development of a multitude of male
reproductive strategies. In one of the most well-studied examples, the spermatozoa of all …

The testicular capsule was studied histologically, morphometrically, ultrastructurally and
immunohistochemically in the Japanese quail, domestic fowl, turkey and duck (all members …

Subjective and objective semen assessments were performed on 18 male Mohor gazelles
(Gazella dama mhorr). Sperm motility assessments combined with sperm plasma membrane …

Contents Many local breeds are currently at risk because of replacement by a limited
number of specialized commercial breeds. Concurrently, for many breeds, allelic diversity …