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Author : Martin Baehr,Barbara Baehr
Publisher : Unknown
Page : 96 pages
File Size : 54,8 Mb
Release : 1993
Category : Hersiliidae
ISBN : 3923871694
Author : Petar Beron
Publisher : Springer
Page : 987 pages
File Size : 44,8 Mb
Release : 2018-07-27
Category : Science
ISBN : 9783319744186
This volume merges all geographical and paleogeographical data on all groups of the arachnofauna. The book features topics such as the ecological factors, climate and other barriers that influence the distribution of arachnida. It also elaborates on the characteristics of the distribution such as arachnida at high altitude (e.g. Himalaya), in caves, in polar regions and highlights differences between the arachnofauna of e.g. Mediterranean regions vs Central Europe, West African vs Indomalayan and more. Furthermore, amongst other topics the volume also includes chapters on the systems of arachnida, fossil orders, dispersal and dispersion, endemics and relicts, regional arachnogeography, cave and high altitude arachnida.
Author : David Penney,Paul A. Selden,Paul Selden
Publisher : Siri Scientific Press
Page : 130 pages
File Size : 54,7 Mb
Release : 2011
Category : Amber fossils
ISBN : 9780955863653
Compared to insects, fossil spiders have received only scant attention in the literature. Previously, the only works available were numerous scientific papers, many published in foreign languages. Most of these are basic descriptive taxonomic works, with very few considering broader biological concepts. Despite a significant increase in the discovery and description of fossil spiders within the last quarter Century this void remained unfilled. Thus, this short monograph aims to achieve several objectives. Firstly, to provide general and up to date background information on the overall importance and diversity of fossils spiders, including an indication of those groups for which the taxonomy is spurious and in need of reassessment. Secondly, to discuss the techniques available for working with fossil spiders and some of the problems encountered by palaeoarachnologists, including bias and limitations of the spider fossil record. Thirdly, the overall evolutionary history of spiders is summarized in the form of an evolutionary tree, which is subsequently used to address key issues of broad interest, such as origins, diversifications and extinctions, including the effects of mass extinctions and predator-prey co-radiations. Finally, the contribution that fossil data can make to understanding the past and present biogeography of the order is considered. This book should be of interest to both amateur and professional arachnologists and palaeontologists and will also serve as a general palaeontological reference work for neonologists studying extant spiders.
Author : Janet Leonard,Alex Cordoba-Aguilar
Publisher : Oxford University Press
Page : 552 pages
File Size : 42,7 Mb
Release : 2010-07-16
Category : Science
ISBN : 0199717036
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.
Author : P. A. Sebastian,K. V. Peter
Publisher : Universities Press
Page : 642 pages
File Size : 45,7 Mb
Release : 2009
Category : Spiders
ISBN : 9788173716416
Author : Paul Selden
Publisher : Unknown
Page : 374 pages
File Size : 55,5 Mb
Release : 1998
Category : Arachnida
ISBN : CHI:54964213
Author : Channa N. B. Bambaradeniya
Publisher : IUCN
Page : 321 pages
File Size : 54,8 Mb
Release : 2006
Category : Nature
ISBN : 9789558177518
Author : Anonim
Publisher : Unknown
Page : 420 pages
File Size : 55,7 Mb
Release : 2005
Category : Entomology
ISBN : MINN:31951P00965290S
Author : Barbara York Main
Publisher : Unknown
Page : 288 pages
File Size : 49,7 Mb
Release : 1995
Category : Nature
ISBN : CORNELL:31924073147690
Author : Anonim
Publisher : Unknown
Page : 328 pages
File Size : 42,5 Mb
Release : 2005
Category : Biodiversity
ISBN : CORNELL:31924101530289
Author : Anonim
Publisher : Unknown
Page : 404 pages
File Size : 54,8 Mb
Release : 2007
Category : Animals
ISBN : UCSD:31822009795758
Author : Anonim
Publisher : Unknown
Page : 1484 pages
File Size : 40,9 Mb
Release : 1998
Category : English imprints
ISBN : UOM:39015046780428
Author : Anonim
Publisher : Unknown
Page : 898 pages
File Size : 41,5 Mb
Release : 2007
Category : Animals
ISBN : UOM:39015072688289
Author : Friedhelm Krupp,V. Mahnert
Publisher : Unknown
Page : 572 pages
File Size : 53,7 Mb
Release : 2004
Category : Animals
ISBN : MINN:31951D020618684
Author : Anonim
Publisher : Unknown
Page : 572 pages
File Size : 41,8 Mb
Release : 1998
Category : Zoological surveys
ISBN : PSU:000054350380
