Darwin’s pet tortoise

February 12, 2014 • 4:24 pm

by Greg Mayer (addendum below)

Darwin lived in the country, and had many animals– for companionship, work, and research. For companions, his chief pets were d*gs (my favorite of Darwin’s d*gs was Bob), but he also had a tortoise that he brought home from James (Santiago) Island in the Galapagos. It has been claimed (most notably by the late Steve Irwin of Crocodile Hunter fame) that this tortoise later made its way to Australia, where it was named Harriet and lived to be about 175 years old. I always thought this story had dubious links in its chain of evidence, and Paul Chambers, in A Sheltered Life: The Unexpected History of the Giant Tortoise, after an exhausting examination, considered the story untrue.

A Galapagos tortoise from James (Santiago) Island, once owned by Charles Darwin. BM(NH) 1874.6.1.6, formerly 37.8.13.1.
A Galapagos tortoise from James (Santiago) Island, once owned by Charles Darwin. BM(NH) 1874.6.1.6, formerly 37.8.13.1.

Unbeknownst to me, four years ago Aaron Bauer and Colin McCarthy revealed the true fate of Darwin’s tortoise: it’s in the Natural History Museum in London, which is pretty much where you would have expected it to wind up. Henry Nicholls in the Guardian, in a Darwin Day tortoise piece, reminds us all of this fact, telling some of the details of the specimen’s history and rediscovery.

McCarthy, at the time the herpetology collection manager, found it in a store room in March of 2009, while preparing a list of Darwin specimens in the collection. Its original registration number shows it was catalogued on August 13, 1837, so it lived only a relatively short while after getting to England.

I am not at all surprised that it turned up at the Natural History Museum, nor that it was lost track of. The big, older, museums have large collections, and earlier curation policies were not up to today’s standards. There’s an old story, perhaps apocryphal, that a British paleontologist once submitted a grant application to fund an expedition to the basement of the museum!

According to Nicholls, you get to see the tortoise as part of the “Spirit Collection Tour” at the museum. “Spirit” refers not to the departed specimens’ souls, but to their method of preservation: in spirits. (Such specimens are called  “alcoholics”, which causes some initial confusion when referring to them in front of a non-museum audience).

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Bauer, A.M. and C.J. McCarthy. 2010. Darwin’s pet Galápagos tortoise, Chelonoidis darwini, rediscovered. Chelonian Conservation and Biology 9:270-276. abstract

Chambers, P. 2004. A Sheltered Life: The Unexpected History of the Giant Tortoise. John Murray, London (American edition, 2006, by Oxford University Press, New York). OUP

Addendum: In response to a reader’s request, I append a photo of Bob (as well as much of the rest of the Darwin family) at Down House ca. early 1860s.

Darwin's dog Bob, lying on ground below window.
Darwin’s dog Bob, lying on ground below window.

Flower mimicry FTW

February 12, 2014 • 4:09 pm

We simply must have some mimicry for Darwin Day, for mimetic animals provided some of the earliest evidence for natural selection.

This picture, by the ace photographer Igor Siwanowicz, is of a flower-mimicking mantid.  The hornswaggled pollinators get eaten, of course.

Can you spot the mantid? 🙂

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From Twitter via Matthew Cobb ~

Giant tortoises FTW

February 12, 2014 • 3:10 pm

What better way to conclude Darwin Day than with some pictures of giant tortoises—not from the Galápagos, mind you, but an independently evolved case of island gigantism on Aldrabra in the Indian Ocean. The pictures come from biologist and reader Dennis Hansen from the Institute of Evolutionary Biology and Environmental Studies in Zurich. His explanation:

I’m currently stuck on Mahe Island, Seychelles, waiting for a nasty storm to clear so we can fly a tiny plane to Assumption & get over to Aldabra Atoll. It being Darwin Day, I thought I would share some non-avian wildlife photos with you, of giant Aldabra tortoises. Although not as morphologically diverse as their relatives on Galapagos, they nevertheless vary substantially in shell shape/size (even though the atoll last emerged from the sea only around 80,000 years ago, the most recent of many ‘versions’ of Aldabra). See attached for a selection of black & white photos (all done from digital colour images in Photoshop, using the Silver Efex Pro plugin from Nik Software). While I like giant tortoise photos in colour, I love the way black & white brings out the graphical qualities, and how it seems to underscore just how large they are.

If you like giant tortoises, art, islands, rewilding, or combinations thereof, you can also check out our art & science project.

Cheers & happy Darwin Day!

You can read more about this species (Aldabrachelys gigantea) here.

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Podcast with The Thinking Atheist

February 12, 2014 • 2:24 pm

I much enjoyed my 1.25-hour interview with Seth Andrews, the “Thinking Atheist”. As you know, he used to be a dyed-in-the-wool Christian and broadcaster of Jesus stuff, but became an atheist. He now runs one of the best godless podcasts around.

Last night we talked almost solely about evolution, with Seth throwing creationist objections at me and asking me to respond. There was then about a half hour of reader call-ins, several of which weren’t really questions but “testimonies.” (I’ve learned that atheist radio broadcasts often have callers who just want to recount their “deconversion” which is fine, because I understand how important it is for them to find affirmation.)

The interview has been slightly edited and now posted for posterity; you can download it here but it’s also on YouTube, which I’ll embed below.

Seth was great.

h/t: Amy

My letter to Charles Darwin on his birthday

February 12, 2014 • 1:15 pm

In 2009, shortly after WEIT came out, I was asked by the BBC to write a letter to Charles Darwin and read it on the air. The letter was supposed to convey my sentiments to the old chap and bring him up to date on what had happened to evolutionary biology since he became food for his beloved earthworms. That letter later appeared on the Oxford University Press blog, which has given The New Republic permission to reprint it today.

If you want to read it, and what I thought important to tell the deceased sage, go to the New Republic‘s column:, “It’s Charles Darwin’s 205th birthday and people still don’t accept evolution: A letter to the man behind the theory.”  I’ll just give you the first paragraph:

My Dear Mr. Darwin,

Happy 200th birthday! I hope you are as well as can expected for someone who has been dead for nearly 130 years. I suppose that your final book, the one about earthworms, has a special significance for you these days. Are the worms of Westminster Abbey superior to the ones you studied so carefully in the grounds of your home at Downe in Kent? They’ve certainly mulched some distinguished people over the years!

There’s a lot more.

South Carolina lawmaker dilutes evolution in state science standards

February 12, 2014 • 11:35 am

Yes, it’s South Carolina, and yes, it’s a Republican. That spells death for evolution on Darwin Day. As the Charleston Journal and Courier reports, the South Carolina Education Oversight Committee has removed from the state science standards, at the behest of REPUBLICAN state senator Mike Fair, any mention of natural selection as a fact. His approach, one the benighted Committee apparently approves, is to “teach both sides and let the kids sort it out.” That, of course, is a tactic of creationists who can’t get their views taught any other way. As the paper notes:

“Natural selection is a direct reference to Darwinism,” Fair said after the meeting. “And the implication of Darwinism. is that it is start to finish.”

Fair argued South Carolina’s students are learning the philosophy of natural selection but teachers are not calling it such. He said the best way for students to learn is for the schools to teach the controversy.

“To teach that natural selection is the answer to origins is wrong,” Fair said. “I don’t have a problem with teaching theories. I don’t think it should be taught as fact.”

Ultimately, the committee approved all measures except that clause, which now gets sent back to the committee level for review. State Superintendent of Education Mick Zais said after the meeting he was not surprised by the debate that took place.

“This has been going on here in South Carolina for a long a time,” Zais said. “We ought to teach both sides and let students draw their own conclusions.”

Indeed. And while they’re at it, why not teach homeopathy and spiritual healing in health class, and astrology and ESP in psychology class. Let the students draw their own conclusions.

Curiously, one of the people fighting this bill is Robert Dillon from the College of Charleston, the same man who reproved me rudely in public for saying that science and religion are incompatible after a debate he had set up on that very topic (my emphasis below):

Meanwhile, a debate taken up by an advocacy group against the use of the word “critically” when it comes to the standards of natural selection and climate change was largely ignored. College of Charleston biology professor Robert Dillon said in a previous interview the use of “critically” on two pages of the entire packet means more than it appears.

“They’re trying to make evolution appear controversial, they’re trying to make it somehow different,” said Dillon previously. “Well, it is controversial, but the controversy is political or religious, it’s not scientific. It’s this richly symbolic situation.”

I approve Dillon’s battle, but he really should recognize now that the controversy is religious (played out, of course through politics), and that means that, for many of his fellow South Carolinians, evolution and religion are indeed at odds!

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Mike Fair, bent on purging the truth from science class

h/t: Barry

Bill Nye on the joy of scientific discovery

February 12, 2014 • 9:39 am

In this two-minute excerpt from his debate with Ken Ham, Bill Nye channels Carl Sagan and talks about the excitement of discovery. It’s quite eloquent, though I suspect it’s been edited from a number of his remarks.  And I could do without the grandiose music.

Regardless, I think Nye should be saying stuff like this in lectures and not debates.  Perhaps he will.