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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Reproductive diapause in males of the linden bug, Pyrrhocoris apterus
 HEJNÍKOVÁ, Markéta
This thesis focuses on the male reproductive diapause in the linden bug, Pyrrhocoris apterus. We examined in detail the response of males to changing photoperiodic conditions, the change in levels of juvenile hormone, and its role in male diapause, as well as the effect of low temperature on diapause termination. We compared the physiology of males and females and pointed out important sexual dimorphism in the control of diapause. Finally, we analyzed a completely novel insect neuropeptide to and explored its possible link in the chain of control of reproductive diapause.
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Physiological mechanisms of aging in maless of model insect species
 PROVAZNÍK, Jan
Trade-off between reproduction and longevity is a widely accepted fact, yet proximate mechanisms are scarcely understood. In this work I tested differences in lifespan between diapause and non-diapause males of a model insect, the linden bug Pyrrhocoris apterus. Also the role of juvenile hormone in regulation of longevity and immunity (measured by relative phenoloxidase activity) was assessed. In addition to that, I examined if juvenile hormone is the mediator of reduction in longevity induced by mating.
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