cannibalism

WTF Fun Fact 12385 – Ladybugs are Cannibals

Do you remember being told as a kid that having a ladybug land of you is good luck? Well, that might be the case for humans, but in the ladybug world, these creatures have to watch their backs. Ladybugs have some interesting behaviors – like cannibalism.

Are ladybugs cannibals?

Yes, ladybugs (also called ladybirds – another thing we didn’t know) will eat their own kind. But not just for fun – they have to be in the right situation. Still, if you check out ladybug habitats, you can find pieces of half-eaten bugs all over the place.

According to The Laidback Gardener (cited below): “Some species lay a mixture of fertile and infertile eggs. When the larva, which does not resemble the adult ladybug at all, but looks vaguely like a small alligator, is born and if it finds no other prey nearby (aphids, scale insects, mites, whiteflies, etc.), it will first eat an infertile egg to gain strength. Then, if the other larvae don’t disperse rapidly, it will eat them too. Even adults will readily eat larvae or even other adults when they have the opportunity.”

Small alligators? Rampant cannibalism? We’ll never look at ladybugs the same way again!

Other interesting facts about ladybugs

You may have also noticed that ladybugs smell pretty bad. It’s definitely the case when you squish them (which isn’t advisable, though they can infest houses – especially windowsills – in the summer). They also emit an odor when they’re just “disturbed.”

To top it off, humans are especially sensitive to the chemical compounds emitted by ladybugs, so they’re especially stinky to us – even when they emit low levels of their odors.

If you happen to have a ladybug invasion, yellow ladybugs are safer to pester than orange ones. Orange ladybugs are the stinkiest of all.  – WTF fun facts

Source: “Gentle Ladybugs are Actually Cannibals” — Laidback Gardener

WTF Fun Fact 12677 – How To Survive A Date With A Spider

In many species of spiders, the last thing males do is mate. After that, they’ve done their job for the evolution of the species and are no longer needed. So females have evolved to simply eat them. They provide nutrients for the babies, after all!

It’s called sexual cannibalism and it’s one of the many facts of nature that we humans may have a hard time wrapping our heads around (or not, depending on your mate).

A few species have evolved to avoid this fate – for example, some may choose to amputate their own legs as a defense strategy in order to distract the females and get away (with the remaining legs, of course). In some sense, this makes sense since the female gets some nutrients and the male gets to hobble away with his life. It just seems a bit drastic from a human perspective.

Other spiders have learned to weave silk around the legs of the females before mating so they can make an easier escape afterward, which seems like a wise move as long as the female survives to produce her young.

The Philoponella prominens have developed a strategy whereby they use their two front legs to propel themselves out of reach of the females, getting away with all of their legs and their lives (if they hit the eject button in time, at least).

Since Philoponella prominens don’t have venom, the males who get cannibalized are in for a rough ride before death. The females produce over 400 feet of silk to “mummify” them, typically winding it so tight that they’re crushed and/or suffocated.

Not only are these spiders interesting for their actions but how they achieve them. Most jumping spiders launch from their back legs, so jumping using the front legs leads to some more interesting questions about the evolution of these creatures, especially since they don’t have muscles in those legs.

According to Smithsonian Magazine, the researcher who made this discovery noted that “one male was able to perform the behavior six times over the course of about eight hours, but was finally killed and eaten after his final performance–perhaps being too exhausted to spring himself to safety.”

–  WTF fun fact

Source: “This Male Spider Catapults Itself Into the Air to Avoid Sexual Cannibalism” — Smithsonian Magazine

WTF Fun Fact 12569 – Idaho’s Cannibalism Prevention Law

An Idaho statue reads:

TITLE 18
CRIMES AND PUNISHMENTS
CHAPTER 50
MAYHEM

18-5003.  CANNIBALISM DEFINED — PUNISHMENT. (1) Any person who wilfully ingests the flesh or blood of a human being is guilty of cannibalism.
(2) It shall be an affirmative defense to a violation of the provisions of this section that the action was taken under extreme life-threatening conditions as the only apparent means of survival.
(3) Cannibalism is punishable by imprisonment in the state prison not exceeding fourteen (14) years.

So, our first question is: only 14 years? That seems lenient.

But perhaps even more interesting is that because Idaho is the only state with a law so explicitly addressing cannibalism, it’s also the only state in which the act is legal in some cases. Go re-read #2.

Basically, if you ingest human flesh or blood under extreme life-threatening conditions and it is your apparent means of survival, you’re all good. We imagine this could create some interesting legal loopholes.

Source: “Did you know that these ‘odd laws’ existed in Idaho?” – Associated Press