Spineless Wonders

Maybe it’s the movies, maybe it’s the blue alien eyes, but invertabrates have always fascinated me.

In theory I’m interested in getting hands on with the little guys (or those that aren’t so little) – but there are two hangups here.

Issue #1:

I have a love hate relationship with the ocean. I love looking at it. I hate being in it. (I blame that on watching too many Peter Benchely movies as a kid). And since a fear of the water makes exploring the wide world of cephalopods difficult, I’ve sort of written off marine biologist as a career path.

But exploring the ocean through the pages of a book is a different story. It’s something I’ve done as a kid and something I continue to do as an adult.

For example, did you know the esophagus of a squid passes through the middle of it’s brain? Cool! And there’s tons more interesting facts about cephalopods … like octopuses navigating through mazes. And squids ejecting ink to form a false bioluminescent body, which  fools predators into thinking the ink IS the squid.

Issue #2:

I have trouble sitting still. I blink a lot. My hands shake. I’ve tried to mount slides of fruit flies and bed bugs – I do a poor job. And my reaction speed sucks. Put me in a lake, give me a net and tell me to catch dragonflies and I’ll catch one or two damselflies, if I’m lucky. (Damselflies are the sluggish things that basically float there, begging to be caught.)

But that’s not all on me. Dragonflies are like the fighter jets of the lake. They look menacing, but are actually quite docile. They don’t sting. And they actually serve a great purpose for anyone who’s visited a lake without bug repellent - killing mosquitoes!

Scientists have observed dragonflies eating up to 300 mosquitoes per day. Thus the nickname “mosquito hawk.”

I’m too tired to write more facts. Read Conniff’s book if you want more, okay? Alrighty then.


Mr. Smarty Plants in danger?

Plant poaching was a topic we lightly addressed today.

It’s becoming a problem for carnivourus plants in the United States, particularlty for Venus Fly Traps in North Carolina, where roadside stands sell the plants on the black market.

The state department of agriculture is working to address the issue, but admits its policy is lax. Fines are relatively low ($200) and arrests are exceedingly rare.

Poaching is just one problem. Toxic runoff and nitrogen depletion are bigger issues.

Carnivorous plants like the venus fly trap are notoriously picky. Their considerable eccentricities have confined their native area to small slivers of land in the Carolinas, where nutriet-depleted soil mingles with boggy conditions and lots of sunlight.

Fewer than 150,000 plants live in the wild in roughly 100 known sites, and the number is dwindling.

Will they be able to adapt and survive?

Scary: We’re all walking blind …

… No really.
According to an article published in New Scientist, the average human loses about 6 seconds of information per minute due to blinking.
That’s pretty amazing considering how the numbers add up. Take, for example, a typical person with a waking time of about 16 hours. Using the 6 second rule, they’re missing out on a staggering 96 minutes of visual information every day. Math nerds, feel free to check me on this, but I think I did the equation right.
So what’s going on when your waking brain is on a visual holiday? Well, I’d like to think it’s the special time when elves from the parallel 11th dimension visit our world, steal our shoes and Slim Jims and roast bratwurst sausages on our grills, but … unfortunately it seems the actual answer is a bit simpler. Your brain’s just trying to process all that visual data it’s taking in.
And most humans process this visual data in remarkably similar ways. The study, conducted by researchers at the University of Tokyo, discovered that, in groups, people tend to unconsciously adapt collective blinking patterns.
Researchers studied subjects during movies and found they tended to blink nearly in unison. They would hold back their eyelids during intense action sequences so as not to miss a moment, but when the drama died down, they’d nearly all breathe (or blink, in this case) a collective sigh of relief.
Oh and on a sidenote, if you feel scandalized about the rising price of movie tickets – here’s some more salt to rub in the wound. You know that 150-minute film you paid $10.50 for? Well you’re going to miss about 15 minutes of it due to blinking. Sorry.

Journal Reference: http://rspb.royalsocietypublishing.org/