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, ...

Cockroaches are commonly seen as simple organisms that act without hesitation, guided by instinct rather than experience. New laboratory research from Scotland reveals that the picture is less fixed.

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 ...