This is one of the most amazing pieces of spider behavior I’ve ever seen (filmed, of course, by the BBC and narrated by Attenborough). You have to watch yourself it as it’s too complex to describe.
There are several questions that arise, and I have no answers:
a.) Does every member of the spider species do this, or is this a behavior evinced by just one individual? (Nobody knows.)
b.) If the latter, how the hell did that spider figure out what to do? If it’s not species-wide, it probably isn’t genetically encoded in the brain, and this behavior would have to be figured out! I don’t think that spiders have that kind of savvy, though they can spin very intricate webs or build trapdoors. Those however, are species-wide evolutionarily derived behaviors.
c.) How does the process of affixing one strand after another to the shell lift it up? The spider isn’t strong enough to haul the shell up, nor does it seem to be using the silk as a pulley, which wouldn’t work anyway
If readers can answer any of these questions, be my guest!
Happy Thanksgiving to all. I’m taking a tiny break tomorrow, so although there will be posts, don’t expect many. Enjoy your noms instead!