Jenkintown, an in-depth history and sightseeing guide
Posted by Grg in Rant/Rave, Tales from Stinkbug Manor on Tuesday, November 22, 2011
Continue Reading Jenkintown, an in-depth history and sightseeing guide
Awesome parasite tricks
Posted by Grg in Grg's Reference, Science Fandom, Science/Geek on Friday, September 9, 2011
While waiting for a photographer to set up this morning, I read a nifty PLoS ONE paper on parasitic wasps from some Czech researchers that might add a few good parasite examples to your cocktail party conversation bank. The chief example, of course, is the larva of the wasps themselves, who force their spider hosts to build the sort of snuggly web-den that they would normally do as they are preparing for winter. The researchers gather that the larva get the same advantage from the winter webs as the spiders do, namely protection from weather and predators. Then, presumably, the larva eat their hosts from within. Eh, don’t feel too bad. Unless you are a big fan of spiders, Neottiura bimaculata and Theridion varians are not the sort I’d hesitate to squish. But maybe that’s just me.
Interestingly, both spiders make different kinds of winterized webs, where N. bimaculata creates a dense wad of webbing while T. varians builds a cupola-like structure. So, despite the fact that the hosts are two distinct species who build two distinctly different types of webs, the wasp larva effects them in more or less the same way, presumably by tinkering with the same winterizing mechanism (yay evolution!).
The paper’s intro also provides a few good examples, which I’ll just paste here for reference:
Many parasites and parasitoids have evolved remarkable strategies to manipulate the behavior of their hosts in order to promote their own survival and reproduction [1], [2]. The behavioral manipulations described include altered phototaxis, changes in locomotion, and the alteration of foraging and defensive behaviors [2]–[19]. The most fascinating manipulations are those that lead to unnatural host behaviors. The parasitic trematode, Dicrocoelium dendriticum Rudolphi, forces its intermediate ant-host to move up onto blades of grass during the night and early morning. This action increases the ingestion of infected ants by grazing sheep, the final host [3]. Mermithid nematodes induce their terrestrial arthropod hosts to commit suicide by jumping into water, after which the hairworms desert the host to spend their adult stage in their natural habitat [8].
Behavioral manipulations often result in the induction of innate behaviors. Acanthocephalan, Polymorphus paradoxus (Connell & Corner), evokes evasive behavior in the amphipod intermediate host, Gammarus lacustris Sars, which is then eaten by ducks [4]. The braconid parasitoid, Glyptapanteles spp., makes their caterpillar host behave as a bodyguard of the parasitoid pupae [15]. The caterpillar stands bent over the parasitoid pupae and violently lashes out at approaching predators, resulting in reduced predation of parasitoid pupae.
Evidence for benefits of the host manipulations for the parasitoid has been gained from several host-parasitoid systems [9]–[12]. But there might be also costs involved. This has been rarely studied. Maure et al. [13] investigated bodyguarding of the braconid pupae, Dinocampus coccinellae (Schrank), by ladybird Coleomegilla maculate Timberlake. Laboratory experiments revealed that duration of bodyguarding suppressed predation by lacewings but also decreased the parasitoid fecundity.
You can find the entire article here, for free, because PLoS ONE is awesome like that.
Why I don’t go in the water: Great Scott, Great Lakes!
Posted by Grg in Don't Go In the Water on Tuesday, August 16, 2011
Why I don’t go into the water: Because even the land can kill you if you’re on the water.
Posted by Grg in Don't Go In the Water on Wednesday, August 10, 2011
Back up! Back up! Back up!
I’ve dreamed of kayaking in Alaska. I’ve also dreamed of getting snuffed out by a calving glacier.
Also: I adore how the Daily Mail can make an “article” out of stills from a YouTube video (linkies).
LinkDump: Camping
Posted by Grg in Dumb thoughts, Grg's Reference on Monday, August 8, 2011
We have a good new tent, a Coleman instant tent, in fact, but no tent on earth, I’m sure, could have withstood the rains we experienced that night. It rained hard. Then harder. Then harder still. Then harder yet. Eventually, the water began seeping in through the seams.
I may post more later, but now–for reference–some useful links for next time:
1. My knot tying skills aren’t what they should be…this I know. I quit Boy Scouts just as we were getting heavily into the knot thing. Hopefully, I can pick up a few pointers here at iwillknot.com.
2. While it is nice to see the stars, I think a rain fly (despite what Coleman says) could be useful. I had planned to put a tarp up above the tent, but the site we ended up on didn’t have many trees. I think I need to put together a kit like this tarp and home-built pole collection from this camping how-to site. I like the use of galvanized spikes as stakes, perhaps with washers to grip the rope better. I may just fork out the cash for tarp poles instead of making my own, though.
3. We had great fun at the Swatara State Park’s fossil pit, and collected some wee fossil shells and what I am hoping is part of a trilobite. Its all late Ordovician-era, about 450 million years ago–more than old enough to blow our minds. I might investigate other local PA fossil-hunting locales. If so, these groups might help, but many of the links are outdated. Apparently, there are some outcroppings in Deer Lake, PA that might be worth visiting with the kids. It could also be a nice stop on the way to the Yeungling brewery tour.
UPDATE: For far, far future reference: small camping trailers. I particularly like the small Casita and Scamp trailers, with fold-down bunks to sleep four.
Why I don’t go into the Japanese water…
Posted by Grg in Don't Go In the Water on Friday, July 1, 2011
But watch this and wonder no more about where Japanese artists get their inspiration.
Why I don’t go in the water: a whale of tail
Posted by Grg in Don't Go In the Water on Monday, June 27, 2011
13-year-old NSW boy was knocked out and suffered a broken collarbone after a humpback whale swept its tail across the boat he was on.
Draw Hall, from Maclean near Grafton in the northern NSW, was fishing with his parents near Brooms Head on Sunday morning when a pod surfaced nearby.
One of the mammals lifted its tail and swept it over the five-metre long boat from bow to stern, hitting Drew, The Daily Examiner reported today.
Note to self: Out of Office Replies, aka FailMail
Posted by Grg in Dumb thoughts, Sincere Apologies on Wednesday, June 15, 2011
Second point, don’t use Mac Mail’s Rules without thinking too hard about it. Between the time I set the message and made it back into my house an hour later, Mac Mail e-mailed replied to every message in my inbox since February.
Oy.
Testing Blogsy on iPad
Posted by Grg in Grg's Reference on Wednesday, June 8, 2011
Will I be able to post a picture of Benny? Lets see after the jump…
The Second (Third? Fourth?) Coming of the Golden Fleece Awards
Posted by Grg in Dumb thoughts, Grg's Reference, Rant/Rave, Science Fandom, Science/Geek on Thursday, June 2, 2011
Why? Because research often sounds funny. Really. Why else would Palin attack fruit fly research? For the ignorant, it sounds pretty damn frivolous. For the rest of us, its pretty embarrassing to watch.
Now I’m not saying that there’s not waste in government, or even waste in research funding. There probably is. In fact, I’m willing to go as far as say–without any evidence at hand one way or the other–that there probably is waste in federal research funding. Someone, somewhere at the National Science Foundation or National Institutes of Health, is funding a research program that they know, in their heart of hearts, will not advance the human body of knowledge one iota. Shocking, I know.
If only Coburn was actually pursuing something like that. No, he’s doing what Proxmire and others did before him, searching through the reams of research grant summaries produced by places like NSF to pick ones that sound silly or frivolous. Its easy enough to do, but will just as likely backfire on you. Again, ask Palin.
You can also ask Mark Sanford. Before Mark was a governor and a famed Appalachian explorer, he was a Republican Congresscritter of the Revolution of ’94 sort. In 1998, he played the same Golden Fleece game, searching the abstract databases of the National Science Foundation (which had become freely online) for funny-sounding award summaries.
To be honest, I did the same thing. I interned in the NSF’s Office of Legislative and Public Affairs (OLPA, which I always liked to say as Opa! They learned quickly to keep me away from the dishes.) As a pioneer in open-access government-type stuff, NSF put all their approved grant information online, which was pretty keen in the 90s. As an intern, I was not encumbered by a particular PR “beat” and was given free reign to cover whatever I found interesting, as long as the professional public information officers didn’t mind. I scanned through the award listings and came up with cool stuff like “supermassive” black holes and “doppler on wheels.”
Sanford did the same thing and came up with a remarkable rant on federal funding for ATM research. He wanted to slice almost $200 million from the budget, citing waste on ATM research and other silly things. Only he (or his staffer) didn’t bother to read beyond the headline, if they did, they would have realized that the award abstract referred to Asynchronous Transfer Mode, the switching technique that made your lightning fast dorm room ISDN connection so much faster than your parent’s Compuserve account. Cue the sad trombone. (Side note: Sadtrombone.com is apparently defunct so I’ll do it myself: Wah wah wah waaaaah.)
In fairness to Republicans, it was Sanford’s Michigan colleague Vern Ehlers who pointed out Sanford’s error, quashing the budget hack. (Check out this little note in the Bulletin of the Atomic Scientists.)
Even more recently, Rep. Adrian Smith of Nebraska, tried to play the Golden Fleece game. Last year, Rep. Smith called for folks to search through NSF’s award database to find other funny-sounding stuff like:
$750,000 to develop computer models to analyze the on-field contributions of soccer players and $1.2 million to model the sound of objects breaking for use by the video game industry. Help us identify grants that are wasteful or that you don’t think are a good use of taxpayer dollars.
Of course, both projects were taken drastically out of context. the soccer study was really a look at smart-swarming, that is how teams can come together to collaborate on complex problems. The “sound of objects breaking” was created for the study of how to recreate realistic noises in a virtual environment, say for search-and-rescue or the military, perhaps? Again, its a bit of irony. The NSF attempts to be responsible with our money, showing us precisely where the dollars are going, only for some political hack to come along, take the work out of context, and use it to further his own political agenda.
Oh, bother.
NSF, which only spends about 5 percent of its budget on administrative costs*, is getting nailed by political hacks for a) openly posting its award information (which is probably mandated by now) and b) funding scientists who often use imprecise or “clever” language in their award application titles and abstracts.
So, Coburn, you want to cut waste? Fine, but realize that federal funding for research is the backbone of our economy. Every new technical advance, therapeutic drug, surgical technique, material and technology we’ve seen in the last 50 years owes its very existence to agencies like the NSF and NIH. Every step forward we’ve made in medicine, technology and industry began in some academic laboratory with government dollars. Research funding is every bit a part of our infrastructure as our roads and bridges (which could also use a little bit of money now that I think of it).
Maybe you could take a little fiscal pride in that Tom, my friend, and a little less happy-dancing over the amount of farm subsidies your rake in for Oklahoma each year.
The fact is, NSF and NIH subject grant applications to peer review. That is, the agencies gather teams of scientists to review the grant applications made by other scientists. The NSF was started that way nearly 60 years ago as a way of making a science of science funding, whereas scientific projects would otherwise be funded through political largesse and budgetary earmarks. In other words, its the opposite of pork.
Money is scarce–only about 1 in 10 grants are ever given funding–so the pressure is on to fund high-impact, low-risk work. (If anything, there is a good argument to be made for funding high-risk work, but that’s not what I’m ranting about today.) Grants that get funding rarely get funded on the first go-around, and a lot of work goes into making sure the money is spent wisely. Note: I can’t think of anywhere else in the Federal government where people work so hard to make sure that taxpayer money is spent well. Correct me if I’m wrong.
Further reading:
(An interesting essay regarding a recent American Association of Anthropology kerfluffle that’s tangentially-related.)
* Best proof I can find is here, a report from 4 years ago. I admit, its a little outdated, but I’ve got work to do…