10 Facts from How Men Age

AgeIn How Men Age, Richard Bribiescas is one of the first to bring evolutionary biology into the conversation of male aging, describing how it has contributed to the evolution of the human species as a whole. The book makes fascinating reading for anyone who has wondered about the purpose of male post reproductive years. From oxidative stress to loss of hormonal plasticity, here are a few things you may not have known about male aging:

1. Compared to other animals, the human life span is much longer than one would predict. Life span is usually correlated with female reproductive life span; that is, when females cease reproducing, it is usually a signpost that mortality for the species is imminent. However, in humans about a third of female life is post-reproductive.

2. Men tend to die at higher rates at younger ages than do women from infancy, through adulthood, and into old age, regardless of culture or environmental context.

3. Sex ratios in humans at birth are biased towards males, but the reason remains a mystery. There may be an unequal number of X- and Y-bearing sperm, the fertilization process might be somehow biased, or there might be an unequal attrition during gestation, all of the above, or something else entirely.

4. In males, muscle serves two purposes unique to their sex. It augments their ability to reproduce by supporting competition and attractiveness and it is an important source of overall energy regulation. More so than other types of muscle, skeletal muscle is sexually dimorphic, which means that relative mass, form, and function differ between men and women.

5. The type of muscles men tend to have are type II, which supports quick movements and bursts of strength. The muscle tends to be in their upper body, including in their shoulders, arms, and back.

6. Men lost muscle tone as they age because of declining testosterone, lower metabolic rates, and shifts in other areas of the hypothalamic-pituitary-testicular hormone axis.

7. After a certain age, men living more urbanized, sedentary lifestyles exhibit a more notable drop in testosterone compared to other men around the world.

8. Testosterone tends to peak in the second decade of life and then slowly decline until the age of 40, after which it is pretty much stable for the rest of a man’s life.

9. As men age, their bodies become less sensitive to environmental and energetic cues and less malleable and responsive to surrounding change. This loss of hormonal plasticity causes the body to become less efficient at putting on muscle and regulating fat accumulation.

10. Oxidative stress is one contributing factor to aging. Men tend to have higher metabolic rates than women, and therefore have the capacity to generate more oxidative stress over their lifetimes. This might contribute to shorter lifespans in men.

To delve into this engaging subject further, pick up a copy of How Men Age.

Bird Fact Friday – How are modern birds and mammals related?

From page 28 of Bird Brain:

Modern birds and mammals are separated by 300 million years of evolution. Their last common relative was a stem amniote, a creature with fully terrestrially adapted eggs, similar to a modern day amphibian. All modern families of mammals, reptiles, and birds evolved brains from the basic neural plan in this stem amniote.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Firefly Fact Friday – Why did fireflies’ light first evolve?

“Many poisonous or distasteful animals use bright coloration—often yellow, orange, red, and black—to warn off potential predators…. But firefly larvae are active mainly at night or underground, where such bright colors would be futile. A light in the darkness, on the other hand, would be quite noticeable. We also know that larval fireflies taste terrible…. So ample evidence suggests that fireflies’ bioluminescence first evolved to help baby fireflies ward of predators: like a neon warning sign, it blazed out “I’m toxic—stay away!” Millions of years would elapse before these larval lights got co-opted to become a courtship signal for adult fireflies.” p. 22

Silent Sparks: The Wondrous World of Fireflies 
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

Bird Fact Friday – Evolution

From page 14 of Better Birding:

Birds, like all animals, have evolved to take the best advantage of their environment. For example, the Northern Harrier glide and swoops low over fields and marshes, periodically flapping and hovering because that enables it to see the small rodents it preys on. Birds like wrens and rails are dark in plumage because they are most often found in dense habitats, the better to blend in with shadows. Species that make their home in the desert are often paler. The intuitive birder keeps these things in mind when looking for a specific species of bird out in the field.

Better Birding: Tips, Tools & Concepts for the Field
George L. Armistead and Brian L. Sullivan

Better BirdingBetter Birding reveals the techniques expert birders use to identify a wide array of bird species in the field—quickly and easily. Featuring hundreds of stunning photos and composite plates throughout, this book simplifies identification by organizing the birds you see into groupings and offering strategies specifically tailored to each group. Skill building focuses not just on traditional elements such as plumage, but also on creating a context around each bird, including habitat, behavior, and taxonomy—parts so integral to every bird’s identity but often glossed over by typical field guides. Critical background information is provided for each group, enabling you to approach bird identification with a wide-angle view, using your eyes, brain, and binoculars more strategically, resulting in a more organized approach to learning birds.

New video trailer for The Secret of Our Success by Joe Henrich

Henrich jacketThe premise of Survivor, in which 16 previously unacquainted humans were routinely abandoned in forbidding locations to brave the elements, was no doubt wildly popular because of the simple fact that we humans, on our own, are virtually helpless. We aren’t particularly adept at building shelter, fending off predatory animals, and the thought of having to procure a meal with nothing but our bare hands and our wits is enough to make many of us run for our nearest Whole Foods. How on earth have we managed to dominate the globe when we can’t survive in the wild? As Joseph Henrich points out, human groups are far less hopeless than lone individuals, and our collective brains have produced ingenious technologies, sophisticated languages, and complex institutions that have not only allowed us to inhabit diverse environments, but have actually shaped biology. Check out the trailer for his new book, The Secret of our Success: How Culture is Driving Human Evolution, Domesticating our Species, and Making Us Smarter.




Presenting the New Trailer for Beth Shapiro’s “How to Clone a Mammoth”

Should we clone extinct animals? Evolutionary biologist and “ancient DNA” researcher Beth Shapiro’s highly anticipated How to Clone a Mammoth: The Science of De-Extinction takes apart an idea that not so long ago seemed more fiction than science. Now, several teams of researchers are working to reconstruct the mammoth genome. How to Clone a Mammoth is making its debut with an array of coverage, including a feature in yesterday’s Sunday Times. From the article:

What excites some scientists, and disturbs others, is that the genome could one day become a template to recreate real mammoths — or something like them.
In her new book, How To Clone a Mammoth, Beth Shapiro of the University of California, an expert on ancient DNA, said: “If we really want to bring mammoths back to life, then we’re in luck, as far as DNA preservation goes. Some mammoths lived in places where their bones and carcasses were buried in permafrost, like being stuck in a freezer for 30,000-plus years.
“It’s in pretty shoddy condition, so hard to piece together, but if we sort through these tiny pieces, finding where they fit along the elephant genome, then we can slowly build a lot of the mammoth genome.”

We are delighted to share the book’s wonderful new trailer:


van Grouw’s Anatomy: The Unfeathered Bird in Scientific American

Who knew anatomy could be ‘sexy?’7-2 van Grouw

So says paleozoologist and science writer Darren Naish in describing the natural science world’s renewed interest in the field. But it’s not because Katrina van Grouw gives a ‘stripped-down’ look at avian remains; rather, it comes courtesy of stream-lined CT scanning and sophisticated 3D visualizations. Yet, Naish’s praise of Katrina van Grouw’s artful spin on ornithology in this behind-the-scenes look at her life and work is much more nuanced than all that fancy stuff. His article in Scientific American explores the all-encompassing passion of this world-class ornithologist, meanwhile loudly complimenting her new book for its precision in rendering every minute muscle, bone, and tendon of the creatures that fill its pages.

Naish doesn’t just jot down his observations from the sitting-room chair; he is given the walking tour, complete with a perusal into the eccentric couple’s inner- and out-sanctums. For example: Katrina and Hein van Grouw are proud owners of a muntjac deer skull collection, a business of ferrets (live ones, it must be noted), and an unsurprisingly vast treasury of mounted bird skeletons, all of which Naish ogles with palpable envy. In many ways, the home epitomizes the research executed for and presented in The Unfeathered Bird: brimming with ornithological insight and too full of artifacts to dismiss as mere decorative ploy.

“It is simply imperative that you get hold of this book if you consider yourself interested in bird anatomy and diversity, or in anatomy or evolution in general.”

Despite van Grouw’s untimely release from her position at a natural history museum, which resulted from her desire to produce the book, Naish commends her for transforming the inconvenience into a wonderful opportunity and looks longingly into the future toward her forthcoming book on domesticates.

The ethically sourced remains of dogs, cats, chickens and pigeons make the cut for the tour, but together, they’re just a small fraction of the never-ending plethora of both bizarre and mundane critters that comprise van Grouw’s professional interests; and we, like Naish, hope to see them all expressed thus in due time.

Katrina van Grouw is the author of:

7-2 Unfeathered The Unfeathered Bird by Katrina van Grouw
Hardcover | 2013 | $49.95 / £34.95 | ISBN: 9780691151342
304 pp. | 10 x 12 | 385 duotones/color illus. | eBook | ISBN: 9781400844890 | Reviews Table of Contents Introduction[PDF]

Quick Questions for Günter P. Wagner, author of Homology, Genes, and Evolutionary Innovation

Wagner_Homology_au photo jpgGünter P. Wagner is the Alison Richard Professor of Ecology and Evolutionary Biology at Yale University and a pioneer of the field of evolutionary developmental biology. He is the editor of The Character Concept in Evolutionary Biology. Dr. Wagner received training in biochemical engineering, zoology, and mathematics from the University of Vienna, Austria, where he completed his Ph.D. in zoology.

He then spent six postdoctoral years at the Max Planck Institutes for Biophysical Chemistry (Goettingen, Germany) and for Developmental Biology (Tübingen, Germany) before assuming a full professorship in the Biology department at Yale University. His research focuses predominantly on the study of homology, or character identity, one of the most difficult concepts in evolutionary biology. His latest book, Homology, Genes, and Evolutionary Innovation (Princeton) provides a fresh and compelling definition of homology and how it arises in evolution.

Now, on to the questions!

PUP: What inspired you to get into your field?
Günter P. Wagner: I received my initial scientific training in chemistry, and I still love chemistry. It is a beautiful system of ideas and practices with wide applicability and utility. Part of its beauty lies in the fact that chemistry can explain a vast array of facts from the combinatorial richness of a quite limited set of basic elements. In contrast, in biology we are confronted with a vast diversity of life forms that defy a simple combinatorial explanation. Biology has to deal with radically different kinds of things, from viruses to blue whales, where one cannot escape the conclusion that radically new things have originated in evolution: humans with culture and language from non-human primates, animals from single-celled organisms, and ultimately life from non-life. Understanding how these novel forms of existence can originate became my obsession in my professional life. This book is my answer – though a partial and limited one – to this question.

What do you think is the book’s most important contribution?
Homology, the notion that different organisms can be composed of corresponding building blocks, is one of the fundamental scientific concepts that also induce a lot of frustration among those who truly want to understand them. Homology shares this dubious distinction with concepts like species, gene, time, and space, to name a few. The frustration has one main source: the fact that it is hard to pin down how two homologous parts can be the same in spite of differences in shape, function, and underlying developmental genetic mechanisms. In particular linking character identity with our mechanistic understanding of development proved difficult. I think the main contribution of this book is to show that it is possible to forge such a link. I say possible, since it is likely that much of what I say in the book might be wrong, but it never the less shows that such a mechanistic understanding of homology is possible if we ask the right questions and give answers that are constrained by large amounts of empirical knowledge already available.

What is your next project?
I am thinking of writing a textbook on “Comparative Developmental Anatomy of Vertebrates” together with three colleagues. The idea is to recast the vast knowledge of the structure, variation, and development of the vertebrate body in light of the recent progress in comparative developmental biology and also in light of the ideas developed in this book.

“Dealing with the intellectual challenges was the reward, not the obstacle, in this project.”

What was the best piece of advice you ever received?
Be myself! In the sciences there is an enormous pressure to conform, which is in part necessary to make science the coherent communal effort that it is. But it also has the potential to kill creativity and thus the search for answers where there have not even been good questions before.

What was the biggest challenge involved with bringing this book to life?
Certainly the biggest challenge was to find a way to have the focus and the continuity of effort for writing the book, while at the same time running a lab, teaching courses, and responding to the needs of the University. It is not so much time, per se, that is hard to come by – but a predictable continuity of quality time for thinking and writing. Dealing with the intellectual challenges was the reward, not the obstacle, in this project.

Why did you write this book?
The topic of homology and innovation has fascinated me for many decades, but at one point I had to accept that the subject matter was way too complex to adequately be dealt with even in a very long article. The complexity of the subject results from the large amount of factual, relevant information and from the many facets it has from genetics, developmental biology, anatomy, and evolutionary biology, and even philosophical issues. There was no way I could deal with this in any other format than in a book.


Günter P. Wagner is the author of:

5-29 Wagner Homology, Genes, and Evolutionary Innovation by Günter P. Wagner
Hardcover | 2014 | $60.00 / £41.95 | ISBN: 9780691156460
496 pp. | 6 x 9 | 25 halftones. 105 line illus. 4 tables. | eBook | ISBN: 9781400851461 |Reviews Table of Contents Introduction[PDF]

Quick Questions for Peter and Rosemary Grant

Grant and Grant_ In Search ofPeter R. Grant and B. Rosemary Grant are both emeritus professors in the Department of Ecology and Evolutionary Biology at Princeton University. They are the co-authors of How and Why Species Multiply: The Radiation of Darwin’s Finches and co-editors of In Search of the Causes of Evolution: From Field Observations to Mechanisms (both Princeton).

B. Rosemary Grant received her B.Sc. (with Honors) from Edinburgh University in Scotland, and completed her Ph.D. at Uppsala University, in Sweden. Peter Grant received his B.A. (with Honors) from Cambridge University, England, completed his Ph.D. at the University of British Columbia, Canada, and completed his Post-doctoral Fellowship at Yale University in New Haven, Connecticut. Their combined research efforts continue to offer “unparalleled insights into ecological and evolutionary changes in natural environments,” and in 2013, the couple was awarded the Margaret Morse Nice Prize by the Wilson Ornithological Society.

Now, on to the questions!

PUP: What inspired you to get into your field?
Peter and Rosemary Grant: Early experience followed by stimulating teachers. Before the age of five, we had each enjoyed the English countryside: the lake district of the north in Rosemary’s case and south of London in mine. Some of our earliest memories are similar, such as the thrill of finding a fossil, catching a butterfly, and smelling a flower. Much later as undergraduates we had inspiring teachers, and many of them. Foremost among them were the Edinburgh geneticists C.H. Waddington and D.G. Facloner (for Rosemary) and Yale ecologist G.E. Hutchinson (for me).

There is widespread misunderstanding about evolution; that it occurs extremely slowly….The idea that animals as large as birds might evolve before our eyes is not so well known.

What was the most influential book you’ve read?
Each of us read Charles Darwin’s Origin of Species at an important stage in our lives. This magisterial book opened our eyes to an understanding of the natural world that is within reach with careful observation, experiment, and logical reasoning, It is extraordinarily rich in insights, and repays re-reading, even with people like us who are older than Darwin when he died!

Why did you write this book?
Having written numerous papers in the specialized scientific literature, as well as three books on our research, we believed the time had come to synthesize all we had done and learned by following the fates of finches on Daphne for 40 years. We also wanted to explain and illustrate the excitement of scientific discovery to a broader audience than the professional biologists who might have read our more technical papers. Finally, we wanted to inspire and encourage students who might wish to study the workings of nature in remote places unaffected by humans, but who are not sure if and whether this can be done.

What was the most interesting thing you learned from writing this book?
Perhaps many scientists make the last observation and then start writing a book without returning to their scientific material. This is not what happened in our case. As we developed the main argument in the book about how new species are formed we were stimulated to improve the way we expressed the main ideas, to think along new lines, and to ask new questions. In a few instances those questions led us back to the files of data, to new analyses, and to a greater appreciation of the role of hybridization in evolution.

We are collaborating with no less than five different groups in pursuing evolutionary questions with the data we have collected.

What do you think is book’s most important contribution?
There is widespread misunderstanding about evolution; that it occurs extremely slowly and therefore cannot be studied in a person’s lifetime. This was the view of Charles Darwin. Many biologists and others now know that this is not correct. For example, evolution occurs in the bacteria that cause illness in us, such as streptococcus bacteria in hospitals, and in insects and weedy plants that are agricultural pests. We do our best to control our biological enemies and persecutors, and they evolve in ways that repeatedly thwart us. The idea that animals as large as birds might evolve before our eyes is not so well known, yet our study in the entirely natural world of Daphne Major island has revealed this does in fact happen when there is a change in the environment, and it takes place over a period as short as a year, and repeatedly.

PUP: How did you come up with the title or jacket?
The title is the essence of the book. That was an easy choice. The jacket was the brain-child of a designer employed by Princeton University Press. We already had a strong image for the cover with a picture of Daphne taken at sea level. However, the designer improved on this by picking one of our photographs taken from the land and cropped it creatively to present of visualization of what it is like to actually be on the island.

What is your next project?
Not sure. Our involvement in finch research has not ended with the publication of the book. We are collaborating with no less than five different groups in pursuing evolutionary questions with the data we have collected. We are also thinking about returning to the island to check on the birds, to see who has survived and who has not, and to find out what has happened to the new lineage of finches whose ups and downs we followed for thirty years.




Peter R. Grant and B. Rosemary Grant are the authors of:

5-23 Grant 40 Years of Evolution: Darwin’s Finches on Daphne Major Island by Peter. R. Grant and B. Rosemary Grant
Hardcover | 2014 | $49.50 / £34.95 | ISBN: 9780691160467
432 pp. | 6 x 9 | 44 color illus. 129 line illus. 21 tables. |
eBook | ISBN: 9781400851300 | Reviews  Table of Contents[PDF]  Chapter 1[PDF]

New Biology Catalog!

Be among the first the check out our new biology catalog!

Of particular interest is The Princeton Guide to Evolution, a forthcoming comprehensive, concise, and authoritative reference to the major subjects and key concepts in evolutionary biology, from genes to mass extinctions. Edited by a distinguished team of evolutionary biologists, with contributions from leading researchers, the guide contains some 100 clear, accurate, and up-to-date articles on the most important topics in seven major areas: phylogenetics and the history of life; selection and adaptation; evolutionary processes; genes, genomes, and phenotypes; speciation and macroevolution; evolution of behavior, society, and humans; and evolution and modern society.

For further reading, check out John Tyler Bonner’s Randomness in Evolution. In this concise, elegantly written book, he makes the bold and provocative claim that some biological diversity may be explained by something other than natural selection.

Also be sure to note Daphne J. Fairbairn’s Odd Couples: Extraordinary Differences between the Sexes in the Animal Kingdom. While we joke that men are from Mars and women are from Venus, our gender differences can’t compare to those of other animals. Looking at some of the most amazing creatures on the planet, Odd Couples sheds astonishing light on what it means to be male or female in the animal kingdom.

We’ll also see you at the Society for the Study of Evolution’s annual meting June 21-25 in Snowbird, Utah at booth 14. Please join us Saturday, June 22 at 7:30 p.m. for a reception in celebration of the publication of Odd Couples: Extraordinary Differences between the Sexes in the Animal Kingdom and our forthcoming The Princeton Guide to Evolution. Meet the authors and editors, and enjoy wine and cheese!