Author: J. A. BarrientosPublisher:
ISBN:
Category : Arachnida
Languages : en
Pages : 104
Book Description
Actas X Congreso Internacional de Aracnologia, Jaca (España), Septiembre 1986
Author: J. A. BarrientosPublisher:
ISBN:
Category : Arachnida
Languages : en
Pages : 104
Book Description
Actas X Congreso Internacional de Aracnologia, Jaca (España), Septiembre 1986
Author: Harvestmen
Author: Ricardo Pinto-da-RochaPublisher: Harvard University Press
ISBN: 9780674023437
Category : Nature
Languages : en
Pages : 624
Book Description
The 25 authors provide a much-needed synthesis of what is currently known about these relatives of spiders, focusing on basic conceptual issues in systematics and evolutionary ecology, making comparisons with other well-studied arachnid groups, such as spiders and scorpions. --from publisher description.
Zoological Record
Author: The Zoological Record
Author: Revue Suisse de zoologie
Author: 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.
Scorpions of the World
Author: Roland StockmannPublisher:
ISBN: 9782913688117
Category : Scorpions
Languages : en
Pages : 565
Book Description
Biogeography and Ecology of Turkmenistan
Author: V. FetPublisher: Springer Science & Business Media
ISBN: 9401111162
Category : Science
Languages : en
Pages : 654
Book Description
remnants of gene pools of these species. Badghyz Natural Reserve, established in 1941, became a refuge for the last existing population of the Turkmen onager (Equus hemionus onager) and a unique pistachio woodland. A new generation oflocal Turkmen scientists, many of whom were trained by the Russian researchers in the graduate schools of Moscow and Leningrad arose from the 1930s through the 1950s. The Turkmen Academy of Sciences and its journal, Proceedings (including the monthly biological series), served to record the results of diverse biological studies in the republic. While basic science in the Middle Asian republics rather gained from the Russian "colonial" influence, natural resources, in contrast, were severely damaged by the Soviet way of handling the economy and social issues. Severe environmental problems have been inherited by the now independent Turkmenistan, including overgrazed desert pastures, deforested mountains, depleted water resources, accumulated pesticides in cotton fields, declining populations of endangered species of animals and plants, and - worst of al- progressing, human-caused desertification (Kharin this volume). In order to approach a solution to these problems, scientists and officials in the republic will need the close attention and help of the international scientific community.
Scorpions 2001
Author: Gary A. PolisPublisher:
ISBN:
Category : Scorpions
Languages : en
Pages : 428
Book Description