Spiders have so much more to love.
Pharyngula
Evolution, development, and random biological ejaculations from a godless liberal
Spiders have so much more to love.
Mondays are usually awful, but now at least I have one thing to look forward to: it’s feeding day down on the spider ranch. The adults get a nice chewy cricket each, while I go through the spiderlings’ chambers and toss them a fruit fly each. Since Vera was so avidly hungry today, I recorded her trapping her prey and then picking at it for an extended period of time.
This one is only for spider obsessives who can enjoy staring at close-ups of arachnids doing strange things with their jaws for 15 minutes or more. Are you one? Let me know, and we can start a club.
It just never lets go!
But then, I’ve also seen my cat do a clumsy pratfall off a couch and then jump up with a look like “I meant to do that”, so maybe it is.
I mentioned the ubiquity of spiders, and I keep running into them everywhere I go now. Look at this magnificent funnel web made in a cannon wheel at the American Legion hall here in Morris. I tried gently tapping the web to see if I could get the occupant to scurry out and say hello, but no luck.
It’s weird how you start noticing spiders everywhere you go. This one is living in our shower — she’s a lovely pale gray and blends in like a delicate little shadow.
You do know if you ever visit, that we tend to tolerate — even encourage — our house spiders, and give them names. Just so you know.
I spent a good chunk of my morning fussing over my spider colony, tidying up their vials and making sure they all had food (crickets for the larger ones, wingless fruit flies for the little guys.) I currently have 10 total adults, 8 females and 2 males, and a countless swarm of spiderlings that I’m gradually sorting out into individual dishes.
The current roster:
Females:
The ones in blue have had a successful hatching, and are currently sharing their vial with some unknown number of babies. I’m slowly working on separating them.
The ones in red have an egg sac.
This is promising — they seem to be awesomely fecund. I’m going to have to wait on supplies before I can start doing mad science on the embryos, though. For now I’ll be content with just building up the colony and figuring out what I’m doing.
Uh, about Larry…Larry’s on the small side, and I initially only got a rough look at their morphology with a hand lens, and just today I got a good look under the scope. Larry’s a girl. Come on, people, I’m new at this — I’ll keep practicing at recognizing their sexes.
Males:
Fewer males. I don’t know whether it’s due to high mortality upon encountering females, or if it’s just sampling bias. They are smaller and harder to spot.
These are all wild caught adults, found in our garage and sun porch. Credit where credit is due: Mary found them all, and lately she’s been catching them herself. True story: I was just reading papers, and had put together a few vials and things to begin the process of spider catching, when she told me there was a lovely spider on the door of the sun room, and asked was it the right species? And of course it was, so I clumsily scooped up Amanda and took her to the lab. And now Mary has the search image for these spiders locked into her brain, and she prowls around and spots them with her eagle eyes, and I haven’t had to do a lick of work.
Bad news, everyone. Fred is dead. Betty ate him. I’m hoping he at least fulfilled his biological destiny before getting his guts sucked out.
More bad news: as I expected, baby spiders are murderous little cannibals, and there’s been a fair bit of fratricide going on, even though they had plenty of fruit flies strolling about. I’ve now separated them all and the survivors now have their own little chambers with their own little fruit fly to gnaw on.
I made a quick video update. Don’t watch it if you’ve got the arachnophobia.
Here’s a story about a lab that has a substantially greater investment in spider science than I do.
NOAA
Uh-oh. I just submitted my first grant application (a small, in-house grant to do pilot studies) for spider research. This might be getting serious.
In more routine news, I added a new fellow to my stable today: Larry. He’s now savoring a meal before I throw him to the loving mercies of the lady spiders.
In case you were curious about how to identify spider sex, I’ll explain below the fold.
