Sperm Receptacles | Full

: By storing sperm, females can fertilize multiple batches of eggs over weeks, months, or even years without needing to find a new mate.

This is why, in many insect species, male genitalia are often terrifying-looking instruments—spiked, hooked, or screw-shaped. They are not just delivery mechanisms; they are biological keys designed to crack the vault of the female’s sperm receptacle. Some males even produce "mating plugs" after copulation, essentially cementing the female’s sperm receptacle shut to prevent other males from depositing their genetic cargo. sperm receptacles

However, the most fascinating aspect of sperm receptacles is their role in sexual selection—specifically, . : By storing sperm, females can fertilize multiple