It is commonly assumed that because males produce many, tiny sperm, they are cheap to produce. Recent work, however, suggests that sperm production is not cost-free. If sperm are costly to produce, ...

The German cockroach evolved to live only in human environments. This roach is very good at adapting to pest control methods — even if it means... These cockroaches tweaked their mating rituals after ...

Sex pheromones are vital in facilitating the chemical communication that underpins insect courtship and mating behavior. Among female American cockroaches (Periplaneta americana), two key volatile sex ...