It probably makes sense that a female should be discerning about who fathers her children. Research published last year also showed female octopuses throwing shells and other debris at males to ward off their unwanted advances. There might not be that barrier to feeling you shouldn't eat your neighbour," Dr Amor said. Research has observed at least one female octopus strangling her partner during copulation. They've got eight legs, nine brains and only a year or so to use them. How many eggs and offspring she is capable of producing depends on how much blood - of yours - she's able to consume in her lifetime of between 100 and 300 days. The male's sperm enters the body cavity, migrates to her ovaries and fertilises her eggs.įemales may be stabbed multiple times by different males during one outing, and will retreat to recover, lest their traumatic mating prove fatal. The male bed bug stabs his reproductive organ through the right side of the female's body wall into what is called her Organ of Berlese. They locate their sleeping hosts by detecting exhaled CO2 and body heat, and once fed, are in the mood for love. They need all the energy they can get for mating.Īdult bed bugs become most active during witching hour - between about midnight and 5am. We can't really begrudge the bed bugs for feeding on our blood though. He's checking to see if she's ovulating and ready to mate.īut if he's not convinced, the male will encourage her to urinate by rubbing her hindquarters.īed bugs are able to produce more young if they're able to access greater amounts of our blood. While it has the appearance of a grimace, the flehman response draws air into the vomeronasal organ - an olfactory sense organ in the nasal cavity above the roof of the mouth - which assists in the detection of pheromones. In the case of giraffes, males will smell the hindquarters of the female, often flaring his upper lip in what is known as a "flehman response". " curling her tail to release that cement that sticks the fertilised eggs onto her swimming legs in the tail." This is my flehman faceĪt this point it's probably safest to assume there's urine involved unless stated otherwise. "The female releases virtually millions of eggs while scraping the surface of the spermatophore to reveal the intact sperm. The female carries that spermatophore around with her until she's ready to release her eggs. He says in lobsters, the male produces a spermatophore - a capsule of sperm, which also contains a protective gelatinous matrix that sets like a sticky concrete on contact with water. So flatworms will fight ferociously to avoid that fate.įemale lobsters use urine to communicate their suitability to potential mates. In the world of flatworms, carrying fertilised eggs is laborious, and gestation puts a temporary hiatus on seeking opportunities to further spread one's genes. Once the deed is done, the "father" exits the scene to fence again, while the expectant mother will gestate their unwelcome clutch for around 10 days. The first penetration decides their fate.Ī successful strike almost anywhere on the body sees sperm injected into the skin, where it will migrate through pores to fertilise the eggs of the disappointed mother-to-be. ![]() Pseudobiceros are hermaphrodites - the majority of the body mass of species like the Persian carpet flatworm ( Pseudobiceros bedfordi) comprises both testes and ovaries.ĭuring battle, each assailant exists as a kind of Schr ödinger's flatworm, wherein both animals are simultaneously the potential father and mother. Flatworms fight with their double-pronged penises in order to not fall pregnant.
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