How and Why Species Multiply: The Radiation of Darwin's Finches

Portada
Princeton University Press, 2011 M05 29 - 218 páginas

Charles Darwin's experiences in the Galápagos Islands in 1835 helped to guide his thoughts toward a revolutionary theory: that species were not fixed but diversified from their ancestors over many generations, and that the driving mechanism of evolutionary change was natural selection. In this concise, accessible book, Peter and Rosemary Grant explain what we have learned about the origin and evolution of new species through the study of the finches made famous by that great scientist: Darwin's finches.

Drawing upon their unique observations of finch evolution over a thirty-four-year period, the Grants trace the evolutionary history of fourteen different species from a shared ancestor three million years ago. They show how repeated cycles of speciation involved adaptive change through natural selection on beak size and shape, and divergence in songs. They explain other factors that drive finch evolution, including geographical isolation, which has kept the Galápagos relatively free of competitors and predators; climate change and an increase in the number of islands over the last three million years, which enhanced opportunities for speciation; and flexibility in the early learning of feeding skills, which helped species to exploit new food resources. Throughout, the Grants show how the laboratory tools of developmental biology and molecular genetics can be combined with observations and experiments on birds in the field to gain deeper insights into why the world is so biologically rich and diverse.

Written by two preeminent evolutionary biologists, How and Why Species Multiply helps to answer fundamental questions about evolution--in the Galápagos and throughout the world.

 

Comentarios de la gente - Escribir un comentario

Crítica de los usuarios - Marcar como inadecuado

ú

Contenido

01 Grant_112
1
02 Grant_1325
13
03 Grant_2634
26
04 Grant_3545
35
05 Grant_4664
46
06 Grant_6575
65
07 Grant_7691
76
08 Grant_92107
92
10 Grant_120136
120
11 Grant_137151
137
12 Grant_152162
152
13 Grant_163167
163
14 Grant_168174
168
15 Grant_175200
175
16 Grant_201209
201
17 Grant_210218
210

09 Grant_108119
108

Otras ediciones - Ver todas

Términos y frases comunes

Acerca del autor (2011)

Peter R. Grant and B. Rosemary Grant are professors emeriti at Princeton University. In recognition of their decades of work studying the ecology, behavior, genetics, and evolution of Darwin's finches, they were awarded the 2005 Balzan Prize and the 2009 Kyoto Prize.

Información bibliográfica