Readers’ wildlife photos, now with moar biology

February 21, 2015 • 9:06 am

We have two more photos from reader Stephen Barnard in Idaho, who appears to still be alive despite his ownership of a new, high-powered sports car. His customary pair of eagles, Desi and Lucy, have returned as well, and appear ready to make more eaglets.

Yet another Red-tailed Hawk (Buteo jamaicensis) in flight:

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The bald eagles (Haliaeetus leucocephalus): Lucy (on the left) looks pregnant. It’s about that time. Last year she laid eggs in March. Desi is the male on the right.

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From reader Tim Anderson in Oz:

Here are two pictures of sunset looking west towards the town of Tumut, New South Wales:

TumutSunset

TumutSunset2

Reader Joe Dickinson sent some photographs called “More from Moorea.”

 Tours to see, touch, and snorkel with stingrays (Himantura fai?) and blacktip reef sharks (Carcharhinus limbatus) are widely offered in French Polynesia.  They often are in shallow water on sandy bottoms, so pretty good views are possible without going in the water. A snorkel mask and waterproof camera provide better clarity (photo #2).  The rays, in particular, are fully habituated to frequent visitors, so up close and personal contact is easy. Note the remora on the ray’s ventral surface in the second photo.  The sharks usually have one or more remoras either swimming just below catching a ride. I like the final photo for the distorted reflections from the surface.

sharks & rays2

sharks & rays3

Note that the remora’s “sucker” is on its dorsal (top) side, so the one on the shark is riding upside down, while the one on the ray is upright.

Before we go back to the photos, we have a brief biological announcement, for there’s an evolutionary lesson here.

The “sucker” of the remora is remarkable, for it’s simply a modified dorsal fin. That was first conjectured from its morphology, but is now supported by analyzing its development. The following photos and info are from London’s Natural History Museum.

First, here’s the sucker; isn’t it bizarre?

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Photo by Dave Johnson.

But it’s a modified fin. The reason we know its evolutionary history is that the “sucker” begins developing just like a normal dorsal fin, which you can see by comparing its development to that of the dorsal fin in a sucker-less fish. Here is a sharksucker (Remora sp.) in early development, with the bones stained red. The sucker begins developing just like a normal fin, complete with the fin spines. Bottom photo is closeup of spines:

sharksucker-normal-dorsal-470-118242-1
Photo by Ralph Britz

And then, as the Museum page notes, the structure begins growing and moving forward:

Then, over a series of small changes, the dorsal fin in the Remora begins to expand andshift towards the head.

By the time the Remora has reached around 30mm in length, the dorsal fin has become a fully formed 2mm sucking disc. It still has the components found in the dorsal fin, the tiny fin spines, spine bases and supporting bones, but the spine bases have greatly expanded.

So, the sucking disc is formed by a massive expansion of the dorsal fin through small changes while the fish is developing. It is not the result of the evolution of a completely new structure.

Here’s the diagram of the dorsal fin of a regular suckerless fish (a bass, Morone sp., top) with that of a remora (bottom). The equivalent (“homologous”) parts are given the same numbers. In the remora, the internal bases of the spines (#1) have gotten much longer, the plates anchoring the spines (#2) have become large platelike structures, and the spines themselves (#3) are the lateral structures in the sucker:

sharksucker-123-200-118237-1

 

Here’s the adult remora with the bones stained red. You can clearly see the bony spines, homologous to the regular dorsal-fin spines:

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Photo by Dave Johnson

So, as is usual in evolution, remarkable and useful new structures don’t arise out of nowhere: they’re simply modifications of things that were there before. One can only speculate about the steps taken by evolution to convert a dorsal fin into a sucker. If this is a product of natural selection, and it surely must be because of its complicated design and usefulness, then each intermediate step in the transition between a normal dorsal fin and the highly modified sucker fin must have been adaptive. I leave it to readers to think about how this might have happened gradually, with each modification conferring a reproductive advantage on individuals in the evolving lineage. (Hint: if you give up, read the article by Carl Zimmer highlighted by reader Glenn Butler in the comments.)

One more point: the sucker is so effective that in some places remoras are used to catch turtles—even large ones. They put a line around the remora’s tail, toss it into the water near a turtle, and it promptly heads for and fastens onto the turtle’s shell. (Remoras hate not being fastened to something.) Small turtles are simply reeled in with the fish, and large ones hauled near the boat where they can be harpooned.

Now back to our regular program: the blacktip sharks photographed by Joe:

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Caturday felid: Gusiversary!

February 21, 2015 • 7:30 am

Today happens to be exactly one year since reader Carol Piller adopted Gus the snow-white cat, a cat deliberately trapped in an outdoor cage last winter by a miscreant, and who, as a result, lost most of his ears to frostbite. But after the local humane society rescued him, Gus found a loving home, and has now become a gentle and sweet-tempered pet—and also the whitest cat I’ve ever seen. He goes outside, but local laws in Canada mandate that he be kept on a harness outside the house.

I nicknamed Gus the cat who is “earless and fearless,” and you can read my earlier posts about him here. His lack of ears makes him look somewhat like a Scottish Fold, but even more adorable.

In honor of Gusiversary, Carol, a musician, wrote and recorded a song in his honor, “White Cat Rag,” and made a video with photos of Gus. Here it is (you may remember her earlier music-and-photo masterpiece, “Hili and Cyrus”):

Some of Carol’s notes about Gus:

I don’t think I ever told you what happened the first day we had Gus. On the first morning after we brought him home there was absolutely no sign of him. We looked all over the house, under and in everything we could think of, but no cat. I had to go to work without knowing where he was and eight hours later, when I came home, there was still no sign him. By this point, I was imagining he had escaped the house. Another hour of desperate searching and I was standing in the basement in despair. Suddenly, I knew where he was. I looked at the bookshelf and there was just enough room to squeeze over the books and go in behind. Sure enough, when I reached in to feel, it was fuzzy! I took the photo called “hiding place” last month: Gus is looking into the very place where he hid that day. I wonder if he remembers.

“Hiding place”:

Hiding Place
“Gus is home” is the first picture I took of him. I must have been too excited because it’s so blurry.

Gus is home
Gus is so photogenic, I have way too many pictures of him. I’ve attached a few other favourites; don’t post them all. [JAC: I did!] “Perfect Gus” is my all-time best photo, I love it; it’s in the White Cat Rag too.

“Perfect Gus”:

Perfect Gus

“Gus has a question”:

Gus has a question

“Gus tongue”:

Gus Tongue

“Upside down”:

Upsidedown

“Gus toes”:

Toes Hair

Here are a few old YouTube videos that you can use if you like. I don’t know why Gus hated that tuft of grass so much! He eventually destroyed it. You always seemed partial to the catnip videos, so I added those especially for you.

Gus attacks a tuft of grass;

Gus enjoys catnip:

Gus is baked after eating catnip:

Happy Gusiversary!

Saturday: Hili dialogue

February 21, 2015 • 5:56 am

My iPhone informs me that it’s 19° F outside (-7 °C): positively tropical! Meanwhile in Dobrazyn, Hili is contemplating a swat, for apparently Sarah waved her hand to get Hili to assume a photogenic pose. She assumed the “pre-pounce” pose.

Hili: I’m looking for the right response.
A: To what?
Hili: To your aggressive hand waving.

(Photo: Sarah Lawson)
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In Polish:
Hili: Szukam właściwej odpowiedzi.
Ja: Na co?
Hili: Na twoje agresywne machanie ręką.(Zdjęcie: Sarah Lawson)

Leon’s mountain adventure: part quatre

February 20, 2015 • 4:00 pm

Leon the tabby is having a blast hiking in the snowy Polish mountains. When I asked how far this cat could actually walk in the snow, Malgorzata relayed my question to Elzbieta, Leon’s staff, and I have this answer:

Leon walked yesterday about 6 km. It took 1.5 hours. Then he demanded to be taken up.

That is amazing; I know of no other cat that would walk 6 km on a leash in the snow. And when Leon is “taken up”, he has a special compartment in Elzbieta’s backpack that is covered with a net so that he can see and breathe. Here’s his position in the backpack (I’m not sure if it’s worn in the front), with the net removed for better display of Leon. This picture was taken at my request:

Leon in backpack

Here are three more pictures of Leon’s Big Adventure, with the first having a monologue:

Leon: Now to the right and there is another kilometer to the hostel. Somebody has to be in charge of this expedition.

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Thanks to Malgorzata for acting as an intermediary in Poland!

 

Red pandas frolic in the snow

February 20, 2015 • 3:25 pm

When I started graduate school, the red panda, Ailurus fulgens, was thought to be the closest living relative to the giant panda, mainly, I guess, because it sort of resembles the giant panda (both have a mask), lives in the same general area, and is arboreal, though it doesn’t eat bamboo.  In fact, it wasn’t even certain that the giant panda (Ailuropoda melanoleucans) was a bear, but that was settled with Vince Sarich’s aptly titled paper in Nature in 1973: “The giant panda is a bear.” (That’s one of the best paper titles I’ve ever seen.) Using immunological distances, Sarich showed that the giant panda was closely related to bears and much less closely related to red pandas or to the raccoon (the alternative theory, since raccoons also have masks).

We now know that the red panda (also insultingly called the “lesser panda”) is more closely related to weasels, raccoons, and skunks than to any bear, although it’s sufficiently unique to be the only species in its family (Ailuridae, though there’s some dispute about this, for higher-level classification is somewhat arbitrary). But here’s the phylogeny of several species showing the relationships I just described, as well as the approximate dates when the lineages diverged:

15_17MolecularPhylogeny-L copy

At any rate, the two species have another thing in common: both the greater and lesser pandas love to frolic in the snow. Here’s a recent video of red pandas having a high old time at the Cinncinnati Zoo:

h/t: Blue

Surprise! ISIS bans teaching evolution in schools

February 20, 2015 • 2:07 pm

This post is like telling people that Christians now worship Jesus. But I put it down for the record, for, after all, many Muslims accept evolution. It’s taught, for example, in Iranian public schools.

Nearly all devout Muslims, however, are human exceptionalists with respect to evolution: while they may accept other species of plants and animals as having evolved, humans are supposed to have been created directly by Allah. So it’s theoretically possible that ISIS could sanction the teaching of non-human evolution. But of course the chance of that happening is close to the chance of the Republicans enacting immigration reform in the U.S Congress.

At any rate, all we know about evolution and ISIS is this report from last September, detailing what ISIS decreed when it took over the Iraqui city of Mosul. As Talking Points Memo noted:

In Mosul, schools have been presented with a new set of rules, advertised in a two-page bulletin posted on mosques, in markets and on electricity poles. The statement, dated Sept. 5, cheered “good news of the establishment of the Islamic State Education Diwan by the caliph who seeks to eliminate ignorance, to spread religious sciences and to fight the decayed curriculum.”

The new Mosul curriculum, allegedly issued by al-Baghdadi himself, stresses that any reference to the republics of Iraq or Syria must be replaced with “Islamic State.” Pictures that violate its ultra-conservative interpretation of Islam will be ripped out of books. Anthems and lyrics that encourage love of country are now viewed as a show of “polytheism and blasphemy,” and are strictly banned.

The new curriculum even went so far as to explicitly ban Charles Darwin’s theory of evolution — although it was not previously taught in Iraqi schools.

That’s not much of a change, but the explicit ban means that ISIS, like some other Islamic countries, sees evolutionary biology as a threat to the faith. Other reforms include not just sex-segregated classes, but sex-segregated teachers, with men teaching boys and women teaching girls. And here’s some more changes:

The extremist-held Iraqi city of Mosul is set to usher in a new school year. But unlike years past, there will be no art or music. Classes about history, literature and Christianity have been “permanently annulled.”

The Islamic State group has declared patriotic songs blasphemous and ordered that certain pictures be torn out of textbooks.

God, what a soul-killer it must be to live in ISIS-controlled territory! It’s like North Korea without the starvation and fulsome worship of Dear Leader. There are no regimes that reject Enlightenment values more completely than the Islamic theocracies.

 

h/t: Gregory

I didn’t make Censor of the Year :-(

February 20, 2015 • 11:20 am

I was so pleased last year to be named the Discovery Institute’s “Censor of the Year” for 2013, recognizing my activities in deep-sixing the teaching of intelligent design at Ball State University. And I hoped I could make it two in a row; after all, we did get the principal of Lebanon High School to stop praying at graduation. But, it seems, the Discovery Institute likes to construe “censorship” as “censorship of teaching creationism.” And so, the recipient of the 2014 Censor of the Year award is. . . . . Neil deGrasse Tyson!

But why on earth Tyson? After all, he doesn’t engage in overt anti-creationist activities, and keeps a low profile about his unbelief. His gig is promoting science, and he’s good at it.

Well, the Discovery Institute appears to equate “promoting science” with “censoring creationism,” for here’s their award statement:

Neil deGrasse Tyson, of course, stands out this year for his command of the aptly named Ship of the Imagination, which he piloted through 13 episodes of the revived Carl Sagan science series, Cosmos. As we documented here at ENV and in a book, The Unofficial Guide to Cosmos: Fact and Fiction in Neil deGrasse Tyson’s Landmark Science Series, Cosmos represented a highly imaginative rewrite of the history of science. It was designed to convey an impression that faith was always an obstacle to scientific discovery, that all legitimate scientific controversies are in the past, that skeptics of scientific orthodoxy today are fools or worse.

Censorship can involve implied or explicit threats — that’s Jerry Coyne’s style, not Dr. Tyson’s. [JAC: Yay!!! I get a mention!] The charming, avuncular, facile Neil Tyson is effective, far more so than other nominees this year, because he is so very likable. As a censor, he works with an airbrush. Clearly produced with an audience of impressionable young people in mind, and no doubt on its way to becoming a staple in school science classrooms, Cosmos tells a seductive story that leaves out complications and controversies around science, and casts materialism as the obvious inference from the scientific data.

Tyson stands out, too, for his commanding cultural authority at the moment. He’s a star! What other television series can you think of that opened with an endorsement by the President of the United States?

. . . Tyson broadcast his photoshopped narrative of science to millions. That alone wins him our nod as 2015 Censor of the Year. He also stands out, though, for further dubious achievements. As others have documented, lead by Sean Davis at The Federalist, Neil Tyson is a fabulist. He’s been caught multiple times bending and stretching the truth in a variety of contexts.

Despite his confirmed slipperiness, his prestige as the popular face of science in America remains undimmed. He’ll go on to tell his distorted story again, and again, and again, you can be sure. Behold, our Censor of Year!

The “fabulist” stuff turns largely on a date that Tyson mixed up and a quote he attributed to George W. Bush, which Bush indeed did say, but not at the time that Tyson described. Tyson in fact clarified that issue in a Facebook post.  Have a look, and see if you think he’s a “fabulist.” And even if he were (and he’s not), fabulism is not “censorship.” What the Discovery Institute objects to is Tyson’s presentation of evolution, which left out the “controversies” about science (i.e., intelligent design creationism), and his reliance on “materialism” (i.e., he neglected God the Intelligent Designer). And he’s popular, too! That must really burn the Discovery Institute’s onions! None of those clowns will ever be as popular or as admired as Tyson! They’re a captious and dour lot, absent any charisma: can you imagine Bill Dembski hosting a television show?

Well, I’m sorry not to have won this year, but you have to hand it to Tyson: he’s in good company!

Obama still refuses to describe Islamic terrorism as “Islamic”

February 20, 2015 • 9:45 am

If you’ve heard the speeches and comments about terrorism that President Obama has issued over the past week, you’ll have noticed an obvious omission: there’s virtually no mention of religion or Islam as a factor in the terrorist acts of individuals or groups like ISIS. When the President does mention religion, he disavows that it has any connection with terrorism, and avers that the supposedly Islamic motivations of terrorists “aren’t really Islamic.” The three-day conference on terrorism that Obama convened this week was called “Countering violent extremism.” The word “religious” might have been inserted before the last word.

After that conference, Obama gave a good example of his circumlocution, which I find not only embarrassing but duplicitous:

“Leading up to this summit, there’s been a fair amount of debate in the press and among pundits about the words we use to describe and frame this challenge, so I want to be very clear about how I see it,” the president said. “Al Qaeda and ISIL and groups like it are desperate for legitimacy. They try to portray themselves as religious leaders, holy warriors in defense of Islam.”

But Mr. Obama said that “we must never accept the premise that they put forward, because it is a lie.” The operatives of Al Qaeda and the Islamic State, also known as ISIS or ISIL, “are not religious leaders — they’re terrorists,” he said.

The lie here is not from ISIS, but from Obama. This mendacity is starting to anger me, for it’s an obvious avoidance of an obvious cause. ISIS and the murderers in Denmark and Paris are palpably motivated largely—if not solely—by their religious beliefs. They say so!  And ISIS and Al-Qaeda are indeed “holy warriors in defense of Islam,” even if we don’t like how they conceive of Islam or what they’re doing to defend it.

Yet Obama won’t admit it this out of either deference for religion or, as noted below, fear of angering Muslim states that are our allies; and it’s all starting to look pretty ridiculous. The ex-mayor of New York City, Rudy Gulianai, described Obama as “not loving America” because of this avoidance, and while that’s completely stupid, even cooler heads are beginning to fault the President for studiously avoiding the topic of Islam. The criticism has become so pervasive that the New York Times had a front-page article about it yesterday, “Faulted for avoiding ‘Islamic’ labels to describe terrorism, White House cites a strategic logic.”

The problem:

[Obama] and his aides have avoided labeling acts of brutal violence by Al Qaeda, the so-called Islamic State and their allies as “Muslim” terrorism or describing their ideology as “Islamic” or “jihadist.”

With remarkable consistency — including at a high-profile White House meeting this week, “Countering Violent Extremism” — they have favored bland, generic terms over anything that explicitly connects attacks or plots to Islam.

Obama aides say there is a strategic logic to his vocabulary: Labeling noxious beliefs and mass murder as “Islamic” would play right into the hands of terrorists who claim that the United States is at war with Islam itself. The last thing the president should do, they say, is imply that the United States lumps the world’s 1.5 billion Muslims with vicious terrorist groups.

The other reason, of course, is that we don’t want to piss off our Muslim “allies” like Lebanon, Egypt, and Saudi Arabia by supposedly impugning the dominant religion of those nations.

Both reasons seem nonsensical to me. The second can easily be defused if Obama just called such terrorism a manifestation of “a murderous and brutal strain of Islam,” which lets all the non-murderous and non-brutal Muslims off the hook. The first rationale—that if we call ISIS a form of Islamic terrorism it will further inflame them and bring them recruits—is equally ludicrous. ISIS already admits that it’s an Islamic organization. Are we supposed to believe that if Obama states that ISIS is what it admits to being, but then qualifies that by saying that most Muslims deplore its violence, his statement will nevertheless bring a stream of recruits to ISIS and other organizations?

But what is gained by calling a Muslim a Muslim? The critics make these arguments:

But Mr. Obama’s verbal tactics have become a target for a growing chorus of critics who believe the evasive language is a sign that he is failing to look squarely at the threat from militant Islam. The vague phrasing, they say, projects uncertainty and weakness at a time when extremists claiming to fight for Islam threaten America and its interests around the world.

“Part of this is a semantic battle, but it’s a semantic battle that goes to deeper issues,” said Peter Wehner, a veteran of the past three Republican administrations and a senior fellow at the Ethics and Public Policy Center. “Self-deception is not a good idea in politics or international affairs. We’re lying to ourselves, and the world knows it.”

While the most vehement criticism has come from Mr. Obama’s political opponents on the right, a few liberals and former security officials have begun to echo the criticism.

“You cannot defeat an enemy that you do not admit exists,” Michael T. Flynn, a retired Army lieutenant general and director of the Defense Intelligence Agency from 2012 to 2014, told a House hearing last week. “I really, really strongly believe that the American public needs and wants moral, intellectual and really strategic clarity and courage on this threat.”

Akbar Ahmed, chairman of Islamic studies at American University and author of a book on Islam in America, said he supported the Obama administration’s care in avoiding a counterproductive smear of all Muslims. But he said the president sometimes seemed to bring an academic approach to a visceral, highly politicized discussion.

“Obama’s reaching a point where he may have to ditch this almost scholastic position,” Mr. Ahmed said. “He sounds like a distinguished professor in the ivory tower, and he may have to come down into the hurly-burly of politics.”

I also agree that we shouldn’t smear all Muslims in this battle, for most Muslims say they deplore this violence. (I have to add, though, that many who don’t participate in the violence nevertheless seem to celebrate it, as evidenced by celebrations in much of the Arab world after terrorist attacks on the West. It’s only when the Islamic violence hits close to home, as it did with the Egyptian Copts murdered in Libya and the Jordanian pilot burned alive, that these states swing into action.)

Obama has turned into a political Reza Aslan, denying the obvious.

So if we admit that we’re fighting extremist Islam, will that help us defeat them? I’m not sure, though Graeme Wood argues that we can’t defeat an enemy if we don’t understand or admit what’s motivating them. But I do value truth above lies, or at least Obama’s deceptive circumlocutions, and it’s not clear that admitting who we’re fighting, and what they’re fighting for (they want a caliphate, for crying out loud!) will hurt us. Further as Peter Bergen notes in the CNN piece described below, admitting that terrorism has an Islamic cause makes it more urgent for us to press Muslim nations to address that explicitly and criticize the forms of Islam that breed violence and hatred.

And there’s a greater issue: the coddling of religion by refusing to admit that it can spawn horrors like ISIS. If we keep imputing the bad things that religion does to other causes, like colonialism or poverty, we’ll never make progress toward ridding the world of harmful superstition. (And, as I always argue, to rid the world of superstition we must also rid it of the social dysfunction that breeds religion.) It is those on the fence about faith who need to clearly see its consequences, and the more we point out the connection between faith and harmful behavior, the faster we’ll rid the world of those delusions.

*******

Speaking of the supposed nonreligious causes of terrorism, you can read a frank analysis that issue, and of of the religious roots of Islamic terrorism, in an article by CNN national security analyst Peter Bergen: “Nonsense about terrorism’s ‘root causes‘”. After showing that terrorism (and the leadership of organizations like ISIS) is by and large a middle-class operation, not usually driven by poverty or disenfranchisement, Bergen goes after Obama’s duplicity:

So if it’s clearly not deprivation that is driving much Islamist terrorism, what is?

For that we must turn to ideology, specifically religious ideology. And this is where the Obama administration has to perform some pretzel logic. It is careful to explain that the war on ISIS is not a war on Islam and that ISIS’ ideology is a perversion of the religion. Fair enough. But the administration seems uncomfortable with making the connection between Islamist terrorism and ultra-fundamentalist forms of Islam that are intolerant of other religions and of other Muslims who don’t share their views to the letter.

ISIS may be a perversion of Islam, but Islamic it is, just as Christian beliefs about the sanctity of the unborn child explain why some Christian fundamentalists attack abortion clinics and doctors. But, of course, murderous Christian fundamentalists are not killing many thousands of civilians a year. More than 80% of the world’s terrorist attacks take place in five Muslim-majority countries — Afghanistan, Iraq, Nigeria, Pakistan and Syria — and are largely carried out by groups with Islamist beliefs.

. . . The Taliban and other Islamist terrorist groups are not, of course, secular organizations. To treat them as if they were springs from some combination of wishful thinking, PC gone crazy and a failure to accept, in an increasingly secularized era, that some will kill in the name of their god, an all-too-common phenomenon across human history.

Bergen is clear about the implication of this recognition for our foreign policy:

ISIS sees itself as the vanguard army that is bringing back true Islam to the world. This project is of such cosmic importance that they will break any number of eggs to make this omelet, which accounts for their murderous campaign against every ethnic group, religious group and nationality that they perceive as standing in their way. ISIS recruits also believe that we are in the end times, and they are best understood as members of an Islamist apocalyptic death cult.

What does that mean for policy makers? It means that the only truly effective challenges to this reasoning must come from Islamic leaders and scholars who can make the theological case that ISIS is an aberration. This, too, is an Islamic project; it is not a jobs project.

h/t: Brygida