This study aims to investigate the role played by social networks, including Facebook and Telegram, in changing the social life styles of the young and middle-aged generations of Iranian society. The research method consists of survey group of 512 people of the young and middle-aged generations selected from 5 provinces using multi-stage cluster sampling. Data were collected using a research-ma...

Of the seven sea turtle species, the critically endangered leatherback sea turtle (Dermochelys coriacea) exhibits the lowest and most variable nest success (i.e., hatching success and emergence success) for reasons that remain largely unknown. In an attempt to identify or rule out causes of low reproductive success in this species, we established the largest sample size (n = 60-70 for most valu...

Tetracarpidium conophorum (Mull. Arg.) Hutch. & Dalz is one of the many medicinal plants used in folklore as male fertility enhancers. This research was aimed at evaluating the anti-peroxidative activity of the leaves of this plant by determining their capacity to reduce malondialdehyde (MDA) level in reproductive organs and accessory glands of rats. Adult male rats were administered orally wit...

Polygynous males can change their mating tactics across their lifetime, but information is scarce on the flexibility of this trait within a given season and the relative costs and benefits of using different tactics. Here, we monitored individually marked male reindeer Rangifer tarandus and classified their mating tactics as harem-defense, sneaking, or mixed. The costs of the male reproductive ...

Reproductive traits of sows are determined chiefly by the genetic background of the dam herself. Whether the breed of the serviced boars also contributes is not yet clear. A total of 8,946 litters of Landrace (L) sows from 68 farms were examined. Of these, 876, 1,260, and 6,810 litters were produced from natural mating with L, Yorkshire (Y), and Duroc (D) breeds, respectively. The birth litter ...

BACKGROUND This study assessed the long-term effects of cancer therapies on reproductive status in adult male childhood cancer survivors, evaluated the treatment-related risk factors for hypergonadotropic hypogonadism and assessed the association between the FSH levels and the later need for assisted reproductive techniques (ART). METHODS The study cohort included adult male 5-year survivors ...

background: the reproductive and sexual health issues concerning persons affected by thalassemia major are complex. the study was planned to investigate the psychological attitudes and expectations in a group of thalassemic pregnant women attending hospital for regular blood transfusion. methods : this is a preliminary cross-sectional study involving 20 consecutive thalassemic patients and a co...

Most of our knowledge of reproduction of wild parrots in the Neotropics comes from studies of tropical lowland species, with few studies addressing species of high-altitude forests. We studied the reproductive biology of Tucuman Parrots (Amazona tucumana) in north-western Argentina between 2004 and 2009. We obtained data on reproductive output for 86 nests and on causes of mortality for 94 nest...

OBJECTIVE To determine whether cell-mediated immunity against porcine reproductive and respiratory syndrome (PRRS) virus is correlated with protection against reproductive failure in sows during clinical outbreaks of PRRS in commercial herds. DESIGN Outbreak investigation in 4 swine breeding herds. ANIMALS 97 sows. PROCEDURES On each farm, blood samples were collected from sows with clini...

The World Health Organization (WHO) has established new reference values for semen characteristics in its 5th edition manual which are lower than those previously reported. Several questions arise after a careful examination of the proposed new values, especially regarding the implications of these references for diagnosis and treatment of male infertility. Despite the notable advance of using ...