Spot the orange pygmy seahorse

December 5, 2015 • 1:15 pm

by Matthew Cobb

This brief video shows the amazing camouflage of this tiny fish (yes, seahorses are fish; what else would they be?), and explores how scientists have been studying their reproduction and growth.

JAC: This is one way to determine whether a trait (yellow color) is hardwired genetically, or is simply part of the organism’s “norm of reaction”—in  this case an evolved developmental program which can code for different but still adaptive outcomes in different environments (in this case, different color and ornamentation). It would be a nice experiment to rear the babies in a variety of different backgrounds, just to see how different they can become. It’s possible that, like octopuses, they can match a whole panoply of different substrates.

One issue: The video implies that the tubercles grown by the baby seahorses on purple sea fans matched the bumps on those sea fans. But I don’t see any difference in the shape of the tubercles induced by living on orange vs. purple sea fans. Maybe I’m wrong, but the video implies that mimicry can affect not only color, but tubercle shape.

h/t Simon Singh

Matthew Cobb chooses the five best books on the history of science

December 5, 2015 • 12:01 pm

Our own Matthew Cobb has just appeared on the Five Books site, where Jo Marchant interviews him about his five choices for “best books in the history of science”. (I think he really means the five best books that are accessible to the layperson.) It’s a good interview, and Matthew sounds very smart, which he is; but I don’t often encounter him in academic mode so I was doubly impressed. Here are his choices; only the first was obvious to me:

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I’ll refer you to the Five Books site to read the whole Q&A, but I’ll show just two bits:

Your day job is as a geneticist studying the sense of smell but you also write and translate history books. What is it that draws you to history and, in particular, the history of science?

It’s a bit of a cliché, but if we don’t understand where we’ve come from, it’s very hard to know where we are going. Just as Dobzhansky said, “nothing in biology makes sense except in the light of evolution,” I don’t think much makes sense about all aspects of human culture, including science, unless you know something about its history and where it came from.

I’m not sure I agree with all that, for if you study science in general, you often learn about the history of your field as part of your studies—or at least about the sequential development of ideas. So, for instance, if you pick up a good evolution textbook, it will talk about Darwin, Wallace, the Modern Synthesis and so on. And even to the extent that a budding scientist doesn’t learn this, it’s not going to impede her work. There are surely plenty of genome biologists, for instance, who don’t know about the work of Avery, MacLeod, and McCarty in the 1940s. That was fantastic research, but you don’t need to know how they figured out that the hereditary material was a nucleic acid to do modern work in genomics. On this one point, then, I take issue with Matthew, though I’m going to tell him I’m writing this and invite him to discuss these issues—and address readers’ comments and questions—in the comments below.

One bit I like a lot is Matthew’s implicit dismissal of the idea that there are ways of knowing other than science, for if the humanities were another “way of knowing,” then knowledge in those fields would be progressive (I’m probably projecting a bit here):

Is there anything particular about science where its history tends to get ignored? It’s important to understand the history — because that’s how we know what we know, right?

The key thing about scientific knowledge is that science is cumulative: we now know more about the world, in a better way, than we did 100 years ago. That doesn’t hold for artistic creation. So, for example, we can’t prove that Keats was a better writer than Shakespeare. ‘Better’ doesn’t really mean anything in that context. Science is progressive, in that it builds upon previous knowledge.

I’d go further: the understanding and analysis of literature hasn’t much progressed, in the sense of giving us knowledge about humanity, in the past several centuries. We get fads like postmodernism, but they come and go, leaving no new “knowledge” in their wake. Yes, the human condition has changed, and literature documents and embroiders it, but insofar as understanding facts about humans and their behavior, well, science broadly construed* is the only game in town.

Finally, Matthew gives us a hint about his next book, buried in his discussion of Galen and the World of Knowledge:

The book I’m writing at the moment is about the brain and how we know what we know about this amazing structure. I needed to understand some of the earliest studies into brain function, in particular those by Galen, who did a series of remarkable and extremely distressing experiments proving that the brain controlled movement.

Now I’m sure readers will have their own history-of-science books to suggest for this list. One I mentioned to Matthew was Horace Freeland Judson’s The Eighth Day of Creation, a fantastic history of molecular genetics, but Matthew told me he thought it too technical for the lay reader. I disagree. Feel free to ask questions or make comments below, but go look at Matthew’s choices and his reasons for making them.

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What I mean by “science broadly construed” is a combination of repeatable and testable empirical observations, doubt, and reason.

NY Times has first front-page editorial in 95 years: it’s about gun control

December 5, 2015 • 11:00 am

The last time the New York Times had an editorial on its front page was in 1920. And that 95 year old piece was a complaint that Warren Harding had become the Republican Presidential candidate (granted, he turned out to be a dreadful President).  Now the Paper of Record has done it again this morning, clearly aiming to call public attention to the epidemic of gun violence in America. As another Times piece notes, this was a decision by publisher Arthur Ochs Sulzberger:

In a statement, the publisher of The Times, Arthur Sulzberger Jr., said the paper was placing an editorial on Page 1 for the first time in many decades “to deliver a strong and visible statement of frustration and anguish about our country’s inability to come to terms with the scourge of guns

“Even in this digital age, the front page remains an incredibly strong and powerful way to surface issues that demand attention,” Mr. Sulzberger said. “And, what issue is more important than our nation’s failure to protect its citizens?”

I’m fully behind Sulzberger and the editorial, called “End the gun epidemic in America,” and, after long cogitation about this issue, and seeing the bad behavior of legislators and gun proponents, have lost patience with those who either say that it’s futile to tackle this issue, or defend American’s untrammeled right to own guns. It’s not futile—not if American stood up to the National Rifle Association, and the “right” to own guns is, in my view, based on a complete misreading of the Second Amendment, regardless of what the Supreme Court says. It’s right there in the Bill of Rights:

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

What part of “well regulated Militia” don’t you understand, gun aficionados? In my view, we need to go to the British system: no handguns and very strict regulation of rifles (no semiautomatic weapons, either). Is Britain rife with shootings by criminals taking advantage of unarmed citizens? Hardly: it has one of the world’s lowest rates of gun homicide. Now everybody will point out the cultural differences between the U.S. and Britain. And you know what? I don’t care. Stricter control of guns is the only way to stop the murders, suicides, and accidental killings that have become an everyday occurrence in America. We’re getting jaded about this—jaded to the point where we see gun control as a futile endeavor.

Here’s what the Times said in its front-page editorial, which I reproduce in full (my emphasis):

All decent people feel sorrow and righteous fury about the latest slaughter of innocents, in California. Law enforcement and intelligence agencies are searching for motivations, including the vital question of how the murderers might have been connected to international terrorism. That is right and proper.

But motives do not matter to the dead in California, nor did they in Colorado, Oregon, South Carolina, Virginia, Connecticut and far too many other places. The attention and anger of Americans should also be directed at the elected leaders whose job is to keep us safe but who place a higher premium on the money and political power of an industry dedicated to profiting from the unfettered spread of ever more powerful firearms.

Readers’ wildlife videos

December 5, 2015 • 8:15 am

Today we have “readers’ videos” rather than photos, and the reader is Tara Tanaka, whose superb videos of a hunting red egret and wood ducks fledging were posted not long ago. Today we have two more short videos; Tara’s notes are indented. The first shows egg theft by female wood ducks:

After the Pileated [woodpecker; Dryocopus pileatus] created the cavity this past spring, Wood Duck hens started laying eggs in it.  I have video on that shows one, then another hen enter the cavity, then as soon as the first one lays her egg and leaves, the second on emerges with the egg in its bill.  I’ve observed and videoed that behavior one more than one occasion.

There was a lot of Wood Duck activity for some time, but then I saw a steady stream of fire ants entering the cavity, so I don’t think a hen could have successfully incubated eggs.   In September I saw three baby gray squirrels playing in the tree, running in and out of the cavity.  I realized that they had been born in the cavity and were just beginning to explore outside of their cozy home.  Hours of video of the three babies is some that I’ve yet to cull, but I did find this clip (I slowed some of it down) of one of them grabbing a bug out of mid-air and eating it.  This squirrel used to sleep with its head hanging out of the cavity, and I think it’s the same one I later videoed that has lost an eye.

I had no idea a squirrel, much less a baby one, could snatch insects out of the air. But here’s the evidence:

 

“Goodbye”

December 5, 2015 • 7:30 am

I came across this song while futzing around on YouTube, and realized that I hadn’t heard it in a coon’s age. Looking it up, I discovered that “Goodbye” was actually written by Paul McCartney, though it was never released by either McCartney or the Beatles, and recorded by Paul only as a demo (see below). It was a big hit for Mary Hopkin (b. 1950) in the spring of 1969—my prime rock and roll years—and was written as a followup to Hopkin’s immensely popular song, “Those were the days,” released the year before. (That song, too, had a complex history, including its melody being used in a commercial for gefilte fish. Hopkins’s version was produced by McCartney.)

One of many songs written by the Beatles and given away to others, “Goodbye” made it to #2 on the UK charts, but only #13 on the US Billboard Hot 100 chart. It’s a lovely song, quite catchy.

Hopskin’s version is the first below, but you’ll need to compare it to McCartney’s demo recording for her, which I think is better in several ways. First, though, listen to her own release, and read these notes from YouTube:

 For the recording, Hopkin sang and performed acoustic guitar, while McCartney played bass guitar, an acoustic guitar introduction and solo, along with lap-slapping percussion and drums. Backing vocals, horns and strings, in Hewson’s arrangement, were overdubbed. The session was filmed by Apple’s Tony Bramwell for a promotional clip. In the footage, Hopkin can be seen miming to the song inside the studio, combined with shots of her and McCartney, smoking a cigarette and finger-popping, in the control room listening to a playback.

And here’s Bramwell’s promotional clip, way cool:

Now McCartney’s demo, with these notes:

To assist Hopkin in learning the song, McCartney recorded a solo demo at his home, 7 Cavendish Road, London, in February 1969 The song [Hopkins’s version] was arranged by Richard Hewson, who had also orchestrated “Those Were the Days,”and produced, along with its flip side, “Sparrow”, by Paul McCartney on 1 March 1969 at Morgan Studios in Willesden. To better match Hopkin’s voice, the key was raised from C major to E major. The recording was Apple’s first official double-A-side, and the first Apple record to feature a full-fledged picture sleeve.

If you knew that this song was written by one of the Beatles, and you also knew the Beatles, you’d immediately realize that it was McCartney’s song because of its lightness and lack of dark undertones. The tuba reminds me of the Sergeant Pepper album (1967, the album that catalyzed my atheism), while the vocal noodling around resembles McCartney’s at the end of “Rocky Raccoon” (1968). This demo is superb, and you’ll notice a few of the words were changed in the Hopkin version:

 

Saturday: Hili dialogue

December 5, 2015 • 5:03 am

It’s Saturday, and I’m learning from experience that this is the worst day to post things that people will read, though I’m not quite sure why. (Someone suggested that people trawl the internet more often when they’re at work.) I may ratchet back on serious posting on Saturdays (Sundays are better) unless I hear otherwise. On this day in history, Kirk Douglas was born in 1916, making him exactly 99 today (and he’s still with us!), while the paleoanthropologist Mary Leakey died in 1996.  Meanwhile in Dobrzyn, Hili is taking it out on the sofa for the bizarre reason that it never showed her mercy (but it did, for it gives her a comfy place to sleep!). Sometimes Hili baffles me. . .

A: Hili, have mercy on this sofa.
Hili: The rule of reciprocity applies in such situations.
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In Polish:
Ja: Hili, miej litość nad tą sofą.
Hili: W takich sprawach obowiązuje reguła wzajemności.

 

Perseverance produces the perfect kingfisher photo—after six years of trying and 720,000 shots

December 4, 2015 • 2:45 pm

I like to end the work week with either a felid or another beast, and this is a nice one. Sometimes even The Daily Fail has some good stuff. This is one of them:

A photographer who used to watch kingfishers as a boy with his grandfather spent six years and took 720,000 photos trying to get the perfect shot of the bird in memory of his late relative.

Alan McFadyen, 46, was taken by his grandfather Robert Murray to see the kingfisher nesting spot at the beautiful lakeside location near Kirkcudbright, Scotland, 40 years ago.

As he grew up, Mr McFadyen never forgot his boyhood visits and so when he took up photography six years ago, he decided to make the spot the focus of his attention, taking hundreds of photos per day trying to capture a kingfisher’s flawless dive.

To me, this is the money shot, but there are other great ones below:

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Since the kingfisher nest was flooded each year by the tidal water, Mr McFadyen dug a hole in the bank and filled it with clay to make a more sustainable nest for the birds.

For six long years, Mr McFadyen returned a few times a week – averaging 100 days a year – to photograph the kingfishers as they dived into the lake.

The father-of-three clocked up more than 4,200 hours and took around 720,000 photos before he got the perfect shot of the kingfisher doing a flawless dive into the water, without even a splash.

Mr McFadyen, from the Dumfries and Galloway area of Scotland, said: ‘There are not many people in the world who have got this shot. Kingfishers dive so fast they are like bullets so taking a good photo requires a lot of luck – and a lot of patience.

‘The photo I was going for of the perfect dive, flawlessly straight, with no splash required not only me to be in the right place and get a very lucky shot but also for the bird itself to get it perfect.

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Visiting twice a day, about 100 days a year, Mr McFadyen would usually shoot around 600 pictures per session. Over the six years, he believes he accumulated around 720,000 pictures – but felt only a small fraction were any good.

Mr McFadyen said: ‘As a small boy of about six I remember my grandfather taking me to see the kingfisher nest and I just remember being completely blown away by how magnificent the birds are.

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Despite getting his ‘perfect’ picture, Mr McFadyen does not intend to stop photographing kingfishers any time soon.

Mr McFadyen said: ‘Just because I have now got this shot, I’m never going to stop going to this spot and snapping the kingfishers. It’s a very relaxing place and I just love it. But I’m not sure how I can ever beat this picture.

‘I have already started taking my eight-year-old son Leighton along with me and he spotted a kingfisher for the first time just last week so my dream is for him to take it up too.’

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h/t: Moto, Hempenstein