Category: Invertebrates
These tube shaped, segmented worms commonly live in the soil and feed on both live and dead organic matter. Earthworms are hermaphrodites, meaning they have both male and female reproductive organs. There are over 6000 named species of earthworms, ranging in size from less than half an inch to over nine feet long! Earthworms have no doubt played a keystone role in human agriculture, as their activity aerates the soil and mixes in organic material, creating conditions favorable for plant growth.
Body horror in the insect kingdom
Learning about animals, you can discover many fascinating, even beautiful facts, but there are also things that can give you nightmares! Enter the strepsiptera (“twisted-wing parasite”). The adult female has no limbs, wings, or mouth - she simply lives in and feeds off her host (typically a wasp). When it becomes time to mate, she protrudes part of her abdomen from between the plates of her host and uses mind control to get the wasp to fly off to nearby males. Sexually mature males have wings, and fly around for about five hours before dying - spending their entire short existence seeking out females to mate with. After the female is impregnated, her own young grow and consume her. And once there is nothing left to eat, they leave their host wasp, infiltrate the nursery, and latch on to a larvae to create their own “zombie wasp” host and continue the grisly cycle!
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