Download or read book The Orb weaver Genera Verrucosa Acanthepeira Wagneriana Acacesia Wixia Scoloderus and Alpaida North of Mexico Araneae Araneidae written by Herbert Walter Levi and published by . This book was released on 1976 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Orb weaving Spiders of Canada and Alaska written by Charles D. Dondale and published by NRC Research Press. This book was released on 2003 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orb-weaving spiders spin the wheel-shaped webs often seen on dewy mornings in meadows and hedges, or on the walls and the eaves of buildings. This manual provides descriptions, illustrations, and taxonomic keys for the identification of the 94 species of these spiders represented in Canada and neighbouring regions.
Download or read book Spiders Arachnida Araneae of Milbridge Washington County Maine written by Daniel T. Jennings and published by . This book was released on 2007 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Primary Sexual Characters in Animals written by Janet Leonard and published by Oxford University Press. This book was released on 2010-07-16 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book General Technical Report NRS written by and published by . This book was released on 2007 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spider Webs written by William Eberhard and published by University of Chicago Press. This book was released on 2020-12-22 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this lavishly illustrated, first-ever book on how spider webs are built, function, and evolved, William Eberhard provides a comprehensive overview of spider functional morphology and behavior related to web building, and of the surprising physical agility and mental abilities of orb weavers. For instance, one spider spins more than three precisely spaced, morphologically complex spiral attachments per second for up to fifteen minutes at a time. Spiders even adjust the mechanical properties of their famously strong silken lines to different parts of their webs and different environments, and make dramatic modifications in orb designs to adapt to available spaces. This extensive adaptive flexibility, involving decisions influenced by up to sixteen different cues, is unexpected in such small, supposedly simple animals. As Eberhard reveals, the extraordinary diversity of webs includes ingenious solutions to gain access to prey in esoteric habitats, from blazing hot and shifting sand dunes (to capture ants) to the surfaces of tropical lakes (to capture water striders). Some webs are nets that are cast onto prey, while others form baskets into which the spider flicks prey. Some aerial webs are tramways used by spiders searching for chemical cues from their prey below, while others feature landing sites for flying insects and spiders where the spider then stalks its prey. In some webs, long trip lines are delicately sustained just above the ground by tiny rigid silk poles. Stemming from the author’s more than five decades observing spider webs, this book will be the definitive reference for years to come.
Download or read book Spiders of Panama written by Nentwig and published by CRC Press. This book was released on 1993-01-01 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Ontogeny and Homology in the Male Palpus of Orb weaving Spiders and Their Relatives with Comments on Phylogeny Araneoclada Araneoidea Deinopoidea written by Jonathan A. Coddington and published by . This book was released on 1990 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Female Control written by William Eberhard and published by Princeton University Press. This book was released on 2019-12-31 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: A growing body of evidence has begun to reveal flaws in the traditional assumption of female passivity and lack of discrimination after copulation has begun. William Eberhard has compiled an impressive array of research on the ability of females to shape the outcome of mating. He describes studies of many different cryptic mechanisms by which a female can accept a male for copulation but nevertheless reject him as a father. Evidence from various fields indicates that such selectivity by females may be the norm rather than the exception. Because most post-copulatory competition between males for paternity is played out within the bodies of females, female behavior, morphology, and physiology probably often influence male success in these contests. Eberhard draws examples from a diversity of organisms, ranging from ctenophores to scorpions, nematodes to frogs, and crickets to humans. Cryptic female choice establishes a new bridge between sexual selection theory and reproductive physiology, in particular the physiological effects of male seminal products on female reproductive processes, such as sperm transport, oviposition, and remating. Eberhard interweaves his review of previous studies with speculation on the consequences of this theoretical development, and indicates promising new directions for future research.
Download or read book Spider Genera of North America written by Vincent D. Roth and published by . This book was released on 1993 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foraging Specializations in Orb weaving Spider written by Cader Wesley Olive and published by . This book was released on 1979 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Araneae pt 1 Family Araneidae written by and published by . This book was released on 1982 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evolution Comparative Morphology and Identification of the Eumaeine Butterfly Genus Rekoa Kaye Lycaenidae Theclinae written by Robert K. Robbins and published by . This book was released on 1991 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Bulletin written by and published by . This book was released on 1985 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annals of the Entomological Society of America written by and published by . This book was released on 1989 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology Predation Ecology and Significance of Spiders in Texas Cotton Ecosystems with a Key to the Species written by Robert Gale Breene and published by . This book was released on 1993 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Occasional Papers written by and published by . This book was released on 1979 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
