The epipelagic flyingfish, Hirundichthys affinis is a major artisanal fishery resource from the Northeastern coastal waters of Brazil. However, biological information about this species has been poorly documented. This paper presents data on the length-weight relationship, sex ratio, length at first sexual maturity, gonadal development and fecundity of H. affinis sampled from the coastal waters...

The evaluation of infertility in males consists of physical examination and semen analyses. Standardized semen analyses depend on the descriptive analysis of sperm motility, morphology, and concentration, with a threshold level that must be surpassed to be considered a fertile spermatozoon. Nonetheless, these conventional parameters are not satisfactory for clinicians since 25% of infertility c...

ARTICLES Endocrinology Acarbose reduces elevated testosterone serum concentrations in hyperinsulinaemic premenopausal women: a pilot study Preconceptional and gestations! evaluation of insulin secretion in patients with polycystic ovary syndrome Nuclear maturity and oocyte morphology after stimulation with highly purified follicle stimulating hormone compared to human menopause! gonadotrophin V...

Background: Polycystic ovary syndrome (PCOS) is a common cause of infertility often responsive to treatment with oral ovulation induction agents. PCOS patients are typically characterized by producing an increased number of oocytes that they are often of poor quality, leading to lower fertilization, cleavage and implantation rates. Recently data involve functional associations between endocrine...

Stereology is the tridimensional interpretation of bidimensional sections a structure, widely used in fields such as mineralogy, medicine, and biology. This paper proposes general software to do stereological analysis, called STERapp, with friendly graphical interface enable expert supervision. It includes module estimate fish fecundity (number mature oocytes ovary), which has been by experts b...

The present paper represents the first description of abnormal hermaphroditism in Galeus melastomus (Rafinesque, 1810). black mouth cat shark specimen, collected summer from southern Tyrrhenian Sea at entrance Salerno gulf, showed a basic intersexuality characterized by presence male secondary and female primary sexual characters. reproductive system has been described with an accurate morpholo...