Someday, when I’m a real boy, I’ll be better at photography

Mary, again…she was out in the garage, and spotted a pair of P. tep. getting frisky. The male kept approaching the female and waving his forelegs for attention, and Mary told me I should capture some of the action (she’s an amateur pornographer, too? She can do everything). Of course I rushed out to set up a tripod and my biggest lens to see if I could get some real wildlife photography. Unfortunately, this was the best I could do.

That’s the lady spider, near the center right; her suitor is the darker, smaller spot to the left. That’s all the oomph my Canon t5i with the EFS 17-85mm lens has. It’s not enough. This is what I’m using to photograph spiders outside the lab.

The big thing hanging off the end is a nice bright LED ring light.

If I want to get any good at this, I know I’m going to have to practice, practice, practice, but I’m also going to need a better lens. Any photography experts out there want to give me some advice? I’ve been eyeing the Tokina at-X 100mm f/2.8 PRO D Macro Lens, or maybe these Macro Lens Extension Tubes which are much more in my price range, although I wouldn’t just stack lenses in my microscope to get a magnified image, so I’m a little leery. I’ve also read that the Canon EF 100mm f/2.8L IS USM Macro Lens is kind of optimal for my purposes, but that’s way out of my price range.

Actually, everything is out of my price range, because I’ve still got that vile SLAPP suit hanging over my head. If that would go away, maybe I’d have a little room in my budget.

But hey, advice and dreams are free, right? Aim me in the right direction.

Mary has been busy, too

In addition to rescuing her stranded man from airports, Mary has been scouting around for spiders in my absence, and caught a few around the house. This is Parasteatoda tepidariorum, the species I work with in the lab, and she has gone straight into the colony.

P.tep is my favorite: so common, but so interesting.

Welcome to the universe, Larry!

Perhaps you recall the majestic Larinioides I found at Pomme de Terre park almost two weeks ago? It laid a large pink egg sac in the container we had it in, as a present before we released it back into the wild.

Today, or perhaps last night, they started hatching. Here’s a baby Larinioides spiderling, freshly emerged, and looking a bit stunned.

They’re back in the incubator until I see that a few more hatch out, and then they’ll be released to the world.

Doctors discover plasticity! Shock horror!

Teenagers are acquiring bone abnormalities from cell phone use! It’s the perfect story, combining contempt for social media and technology and young people with an apparent appropriate comeuppance for those sins.

Mobile technology has transformed the way we live — how we read, work, communicate, shop and date.

But we already know this.

What we have not yet grasped is the way the tiny machines in front of us are remolding our skeletons, possibly altering not just the behaviors we exhibit but the bodies we inhabit.

New research in biomechanics suggests that young people are developing hornlike spikes at the back of their skulls — bone spurs caused by the forward tilt of the head, which shifts weight from the spine to the muscles at the back of the head, causing bone growth in the connecting tendons and ligaments. The weight transfer that causes the buildup can be compared to the way the skin thickens into a callus as a response to pressure or abrasion.

The phenomenon is called an EEOP, or enlarged external occipital protuberance, and in a study of 1200 people, they found that about a third have this feature…and that it is more common in men and younger people. They assume from the differences in frequency at different ages that this is an emerging, recent change, which may be reasonable, but I’d like to see a better analysis of the causes.

The authors also assume that this is an undesirable change, with loaded language and an attempt to imply this feature causes serious problems.

Alarmingly, a survey of university staff and students revealed that participants spend an average of 4.65 hours/day using a hand held mobile device, and that 68% of the participating students reported neck pain.

Why is mobile device use alarming? Also note: they do not show a correlation between the presence of EEOPs and neck pain. We’re simply supposed to assume there’s a causal relationship, I guess, between exostoses and this vaguely defined term, “neck pain”. They have not shown that these bony bumps are a problem, but they are ready to raise the alarm.

Clearly, our findings should raise concern as morbidity and disability due to musculoskeletal disorders impose increasing physical, social and financial burdens on individuals and societies. Accordingly, the mitigation of poor postural habit through prevention intervention may be prudent.

Again, they have not demonstrated morbidity or disability. They’ve found that lots of people have these “bumps” that are easily detectable in x-rays, and maybe it’s because people are peering at their cell phones or playing the video games, so there must be a problem. They’ve only shown that the phenomenon exists!

To which I would point out the example used in the Washington Post article: hard work causes a healthy plastic response by your tissues, building up calluses. Are we alarmed by the growth of calluses in working people? Or do we recognize that this is a normal protective response by our bodies to environmental stresses? If you adopt an unusual posture in your work, your bones, cartilages, and tendons also mold themselves to fit.

They also show that 40% of college-age people are exhibiting this “problem”. I’d say that if it’s that common, while these same people seem to be functioning well and are actively and voluntarily engaging in the activity that putatively causes it, it probably isn’t a problem. It may also become the new normal. When over half the population expresses it, will doctors change their diagnoses and note of the new minority, “Oh, you’re missing your occipital exostosis. I’m going to recommend some physical therapy to build it up”?

Finally, one peculiarity here is that they’re jumping all over this possibly entirely benign phenomenon. Rather than focusing on college students using cell phones, I wonder what musculo-skeletal distortions are affecting people who are doing stoop labor, or other repetitive tasks in their work. Perhaps someone can put together an alarmist paper showing the plastic responses in the bones of menial laborers, expressing concern for the unfortunate spinal problems of those people. After all, if you’re horrified that students spend 5 hours a day looking at their phones, you should be experiencing raging apoplexy about farm workers spending 8-10 hours a day bent over, picking crops.

Nah, those people don’t matter.

Spider meeting is done

Waaah. I just have the closing banquet tonight, and then tomorrow is a long travel day home. So what did I learn?

  • Spiders are cool, but I guess I already knew that.
  • Spiders are a jillion times more complicated than I thought, and I’ve got a lot to learn.
  • Spider meetings are small and cozy and nice.
  • I’ve made a list of a dozen experiments that I think are doable by undergrads, and will provide interesting information.
  • I need to get home to start putting these ideas to work.

I guess that’s a pretty good outcome for a meeting, to end it inspired and better informed than I was at the beginning.

Next year AAS2020 will be held in Davis, California. I’m hoping I can fit it into my budget.

That makes it official

I was at dinner with a group of arachnologists last night, and I was surprised when I mentioned that I was from Minnesota and was then told that I was one of the only two arachnologists in the state. I was firstly startled at actually being told I was an arachnologist since I’m still trying to get a good grasp of the field, and secondly surprised that they’re so rare (would you believe there are only 500 people in the International Society of Arachnology?). He qualified it by saying that I was one of two people who had officially registered with the American Arachnology Society, from which I learned a few things.

If you want to be an arachnologist on paper, it’s easy — just send in your membership dues.

If you are a real arachnologist in Minnesota, with skills and expertise and deep knowledge, rather than a wanna-be like me, you’re behind. Send in your membership dues. Otherwise, people will keep mistaking me for you.

Otherwise, if you want to become a real arachnologist, here’s an article on the subject. It recommends starting in childhood and your teenage years, which is a little worrisome, since I waited until I was 61 to start. But you can do it! Unfortunately, unlike being an arachnologist on paper, it’s going to take a lot of hard work.