A readily comprehensible guide for biologists, field taxonomists and interested laymen to one of the oldest problems in biology: the species problem. Written by a geneticist with extensive experience in field taxonomy, this practical book provides the sound scientific background to the problems arising with classifying organisms according to species. It covers the main current theories of specification and gives a number of examples that cannot be explained by any single theory alone.
Mục lục
Foreword
Preface
Introduction
Are species constructs of the human mind?
Why is there a species problem?
What are traits in taxonomy?
Diversity within the species: polymorphisms and the polytypic species
Biological species as a gene-flow community
The cohesion of organisms through genealogical lineage (cladistics)
Outlook
Glossary
Giới thiệu về tác giả
Currently a professor in Dusseldorf, Germany, Werner Kunz studied biology, chemistry, and physics in Munster and spent two postdoc years at Yale University in New Haven, U.S.A. Although he was educated as a zoologist, he switched to Drosophila genetics and worked on chromosomes and ribosomal DNA. He later changed his field of interest again, carrying out research into molecular parasitology, and for the past ten years has been participating in the teaching of philosophy of science. Professor Kunz continues the hobby he began at a very early age, photographing birds and butterflies as a field biologist all over the globe.
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