Once a Wolf

September 15, 2018

Oxford human genetics professor Sykes, best known for Seven Daughters of Eve, has gone to the dogs. Here he tracks the evolutionary journey of Canis lupus to Canis familiaris, which likely started with someone, somewhere adopting some cute pups. Not just about figuring out Fido's origins; dog evolution is intimately entwined with human evolution.

Copyright 2018 Library Journal, LLC Used with permission.

January 1, 2019
How did wolves evolve into dogs? Sykes (Genetics/Oxford Univ.; The Nature of the Beast, 2015, etc.) reviews the state of the art on matters canine and lupine.Past studies of canine evolution have relied on osteological and archaeological evidence, but since 2005, the fully sequenced dog genome has been available, allowing, among other things, for "re-drawing the evolutionary tree of dog breeds constructed with mitochondrial DNA over twenty years previously." Five years later, writes the author, a new family tree was published, with all 64 breeds--even the Chihuahua--pointing back to the wolf. Some of those breeds are "ancient," such as the Basenji and Samoyed; others are quite recent. Making those breeds required domestication, for which Sykes finds no evidence before about 50,000 years ago--still far earlier than previous studies have projected. Like other scholars, the author locates that origin in shared hunting, a process that may have altered humans as much as dogs in "the unstoppable current of natural selection." Scholarly argument persists over whether the original raw materials of the dog were really wolves and not coyotes, jackals, hyenas, and other canids. Sykes charts the development of the Carnivora before settling, persuasively, on the scenario of Paleolithic hunters working in concert with wolves to bring down large game such as bison. The author goes on to examine some of the mutations that subsequently allowed human breeders to select for certain characteristics, whether the ridge of the ridgeback or the pigmentation of the bull terrier (with a passing nod to the heterochromia exhibited by David Bowie's Ziggy Stardust). Melanism, hyperuremia, progressive rod-cone retinal degeneration: The author's discussion can be densely technical at times but never enough to render the text inaccessible to those without a background in genetics and population dynamics. Moreover, he closes by looking outside of nature to find the nurture connected to our love of dogs, that "amazing psychic symbiosis."Scientifically inclined dog lovers will find this a trove of information and provocation.

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March 1, 2019

Sykes (human genetics, Oxford; The Seven Daughters of Eve) presents an easy-to-understand, scientific explanation for the genetic origins of dogs. He uses dogs' evolution from wolves, as proven in a pivotal 1997 paper published in Science magazine, as the jumping-off point to discuss pertinent genetic issues, such as the inheritability of diseases and the genesis of different dog breeds. Though Sykes describes himself as "not a dog person," he includes a series of interviews conducted by his wife with dog owners that detail their relationships with their beloved pets, which serves as a nice counterpoint to the preceding technical content. Reading this is like having your own personal geneticist explain complex research papers in a way that is both comprehensible and fascinating. Heavily peppered with references to scientific papers that have documented the research on dog genetics, this also serves as a wealth of further reading material. VERDICT Rich in accessible analogies that deftly explain complex scientific concepts, this is a must-read for anybody who has wondered about the origins of humans' best friend.--Diana Hartle, Univ. of Georgia Science Lib., Athens

Copyright 2019 Library Journal, LLC Used with permission.