For many species of reptile, crucial demographic parameters such as embryonic survival and individual sex (male or female) depend on ambient temperature during incubation. While much has been made of the role of climate on offspring sex ratios in species with temperature-dependent sex determination (TSD), the impact of variable sex ratio on populations is likely to depend on how limiting male n...

rearing methods for bracon hebetor (say) (hym., braconidae) were investigated in the series of laboratory experiments designed to enhance the yield of the mass rearing of this parasitoid for biological control of lepidopteran field and stored product pests. in these experiments, the effects of parasitoid and host densities on fertility and sex ratio of b. hebetor were assessed. in parasitoid de...

There is a variety of inconsistencies in the differences in alcohol use and related problems between male and female genders. This study was aimed at analyzing the gender differences in alcohol use and related problems among university students in Minsk, Belarus. A total of 465 male (average age of 21) and 1030 female (average age of 20.5) students from four major universities in Minsk, Belarus...

Background: Mycosis Fungoides (MF) is the most common and indolent form of Cutaneuse T-cell Lymphomas (CTCL), that usually occurs in old adults. Objectives: To determine epidemiologic features and patients characteristics of MF in Isfahan (Iran). Methods: We performed a retrospective study in MF clinic of alzahra hospital that is the main center for treatment of MF patients in Isfahan (Iran) an...

Two logistic regression models were used in the comparison of Iowa and U.S. crashes. Of particular interest is the risk of severe injury for male and female drivers within three age groups: middle-age (3554), older (55-74), and elderly (75 and older). Within Iowa, male drivers have a higher risk of severe injury than female drivers (Odds Ratio = 1.15). However, nationally, male drivers have a l...

This paper proposes the generalized Trivers-Willard hypothesis (gTWH), which suggests that parents who possess any heritable trait which increases male reproductive success at a greater rate than female reproductive success in a given environment will have a higher-than-expected offspring sex ratio, and parents who possess any heritable trait which increases female reproductive success at a gre...

The pinewood nematode Bursaphelenchus xylophilus (B. xylophilus) is responsible for a devastating disease of pine forests. Its pathogenicity closely related to the numbers individual B. xylophilus. ratio female male (sex ratio) key understanding population change in this species. sex varies widely, but it unclear how affected by environmental changes. ratios nematodes, isolated from different s...