The Ptarmigan's Dilemma
An Exploration into How Life Organizes and Supports Itself
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- $14.99
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- $14.99
Publisher Description
Winner of the 2010 Lane Anderson Award
Drawing on breakthrough research in evolution, genetics, and on their extensive work in the field and lab, wildlife biologists John and Mary Theberge explain for non-scientists the real facts of life.
Birds that suddenly grow gall bladders, when their species has none. Moose with antlers so big they encumber their movement through the forest. Butterflies that risk extinction by overwintering en masse. These are just a few stories the Theberges tell in their examination of what the mechanisms of evolution are and how they work. With examples from the very latest discoveries in genetics and ones they have made in their own field work, The Ptarmigan's Dilemma is a ground-breaking explanation of evolution for non-scientists.
By marrying the separate sciences of ecology and genetics, the Theberges paint a picture far richer than either discipline can alone of how, for almost 4 billion years, life on Earth has evolved into the rich diversity that's under threat today. Along the way, they explain just what "the survival of the fittest" really means, how dramatic evolutionary changes can take place in just one generation, and how our too-little knowledge of or interest in how life on Earth organizes and supports itself is rapidly making us a danger to ourselves.
PUBLISHERS WEEKLY
In this thoughtful but overlong volume, part field memoir and part scientific overview, married naturalists John and Mary Theberges (Wolves and Wilderness) probe the relationship between evolution and ecology with the provocative questions that have driven much of their 30-year careers: "How is life's marvelous self-organization accomplished? When and why might it fail?" Distinguishing the twin aspects of natural selection-the pressure for survivability and the pressure (in males) to attract sexual attention from females-the duo show how it "is not sufficient by itself to explain the existence of order." Rather, order and complexity spring from the most basic laws of matter, apparent in "sand ripples on a beach" or "chemical reactants"; the Theberges push the theory that "phenotype plasticity" at the most basic levels allow animals with identical genes to develop into separate subspecies, a process analogous to the differentiation of stem cells into various tissues (liver, skin, muscle). The duo also unpacks the ecological challenges for the human species (food shortage, pollution, overpopulation, etc.), warning that we may have passed the point of sustainability.
