The apterous56f (ap56f) mutation leads to increases in juvenile hormone (JH) degradation levels and JH-esterase makes a greater contribution to the increase than JH-epoxide hydrolase. Dopamine levels in ap56f females, but not males, are higher than in wild-type. JH treatment of ap56f and wild-type females decreases their dopamine levels. ap56f females, but not males, produce less progeny. Survival under heat stress is dramatically decreased in ap56f females, but not males. ap56f flies show a stress reaction, as judged by changes in tyrosine decarboxylase and JH-hydrolysing activities, dopamine levels and fertility, but its intensity in the mutant females, but not males, differs significantly from wild-type. Thus, the ap56f mutation causes dramatic changes in female, but not male, metabolism and fitness.
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Background Pandemic of COVID-19 had strong impact on young people in high education whose life plans, education prospects and personal networks were threatened. Based on theoretical framework of differential consequences of catastrophic events for less privileged groups, we explore the impact of pandemic (IP) on genders in student communities. Methods The C19 ISWS survey was conducted in spring 2020 by web-survey method among students of Russian universities (2738 cases). IP was measured in five domains: 1) socio-economic: subjective evaluation of economic wellbeing before and during the pandemic; 2) psychological (Depression Scale CES D8); 3) social ties: change in frequency of contact with family and friends, intensity of contacts in hours per day; 4) physical health (experience of COVID symptoms); 5) academic workload in hours before and during pandemic. ANOVA analysis was used to investigate strength of impact on gender groups after controlling for other factors (age, city, grade). Results Change of financial wellbeing experienced 39% of students with 4% significant difference between male and female students. Male and females had different mental reaction to COVID on few aspects - anxiousness (13 points difference), apathy (12 points), restlessness (9 points) and general depression (7 points), but not on social aspects as loneliness and isolation. IP was not differential for health (22% in average experienced the symptoms of COVID), academic workload (decreased hours per day on 5% for both genders) and social ties (strong decrease in contacts with friends, small decrease in contacts with family but similar by genders). Conclusions IP is strong and differential by gender for socio-economic and socio-psychological wellbeing, but similar for social communication and social ties, health and academic workload. These results may serve as a basis for forming more effective communication strategies and social support to mitigate IP for male and female students.
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