Author: Herbert Walter LeviPublisher:
ISBN:
Category : Achaearanea
Languages : en
Pages : 163
Book Description
The Spider Genera Achaearanea, Theridion and Sphyrotinus from Mexico, Central America and the West Indies (Araneae, Theridiidae)
Author: Herbert Walter LeviPublisher:
ISBN:
Category : Achaearanea
Languages : en
Pages : 163
Book Description
“The” Spider Genera Achaearanea, Theridion and Sphyrotinus from Mexico, Central America and the West Indies (Araneae: Theridiidae)
Author: Herbert Walter LeviThe Spider Genera Achaearanea, Theridon and Sphyrotinus from Mexico, Central America and the West Indies
Author: Herbert W. LeviSpiders of Panama
Author: NentwigPublisher: CRC Press
ISBN: 9781877743184
Category : Science
Languages : en
Pages : 284
Book Description
in collaboration with Bruce Cutler and Stefan Heimer The available information, personal observations, and study of one facet of the beauties of the tropical rain forest of Panama is gathered into a much needed volume which includes the physical, biological, and spider environment of Panama. The complete list of known Panama spiders with literature references and a key to the families and most genera provides the user with an up-to-date guide to this fauna. With over 350 illustrations, numerous charts, graphs, and tables, the coverage of this volume goes far beyond the geographical boundary of the study, making it useful to all students of spiders.
Dominican Amber Spiders
Author: David PenneyPublisher: Siri Scientific Press
ISBN: 0955863600
Category : Amber
Languages : en
Pages : 178
Book Description
Spider Genera of North America
Author: Vincent D. RothPublisher:
ISBN:
Category : Arachnida
Languages : en
Pages : 212
Book Description
Focus on Biodiversity Research
Author: Jan SchwartzPublisher: Nova Publishers
ISBN: 9781600213724
Category : Science
Languages : en
Pages : 340
Book Description
Biological diversity, or "biodiversity," refers to the variety of all life on earth, and the complex relationships among living things, and between living things and their environment. Biodiversity includes genetic variety, species diversity, and variability in communities, ecosystems and landscapes. Biodiversity sustains the environments in which we live and on which our lives and those of every other living creature on Earth depend. Thanks to biodiversity, we are able to obtain such necessary goods as food, clothing, medicine, and fuel. Equally important are the ecosystem services that biodiversity provides, such as clean air and drinkable water. Conservation scientists have identified a number of universal threats to biodiversity: habitat loss and degradation, invasive species, pollution, overpopulation, overexploitation and consumption, and global climate change. This book examines critical issues in this field from researchers around the globe.
The Evolution of Primary Sexual Characters in Animals
Author: Janet LeonardPublisher: Oxford University Press
ISBN: 0199717036
Category : Science
Languages : en
Pages : 550
Book Description
Primary sexual traits, those structures and processes directly involved in reproduction, are some of the most diverse, specialized, and bizarre in the animal kingdom. Moreover, reproductive traits are often species-specific, suggesting that they evolved very rapidly. This diversity, long the province of taxonomists, has recently attracted broader interest from evolutionary biologists, especially those interested in sexual selection and the evolution of reproductive strategies. Primary sexual characters were long assumed to be the product of natural selection, exclusively. A recent alternative suggests that sexual selection explains much of the diversity of "primary" sexual characters. A third approach to the evolution of reproductive interactions after copulation or insemination has been to consider the process one of sexual conflict. That is, the reproductive processes of a species may reflect, as does the mating system, evolution acting on males and on females, but in different directions. In this volume, authors explore a wide variety of primary sexual characters and selective pressures that have shaped them, from natural selection for offspring survival to species-isolating mechanisms, sperm competition, cryptic female choice and sexual arms races. Exploring diverse reproductive adaptations from a theoretical and practical perspective, The Evolution of Primary Sexual Characters will provide an unparalleled overview of sexual diversity in many taxa and an introduction to the issues in sexual selection that are changing our view of sexual processes.
The Spider Genus Theridula in North and Central America and the West Indies
Author: Herbert Walter LeviA List of New North American Spiders
Author: Beatrice R. VogelPublisher:
ISBN:
Category : Spiders
Languages : en
Pages : 200
Book Description