Author: Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 384
Book Description
Annales Zoologici Fennici
Author: The Chironomidae
Author: P.D. ArmitagePublisher: Springer Science & Business Media
ISBN: 9401107157
Category : Science
Languages : en
Pages : 579
Book Description
The dipteran family Chironomidae is the most widely distributed and frequently the most abundant group of insects in freshwater, with rep resentatives in both terrestrial and marine environments. A very wide range of gradients of temperature, pH, oxygen concentration, salinity, current velocity, depth, productivity, altitude and latitude have been exploited, by at least some chironomid species, and in grossly polluted environments chironomids may be the only insects present. The ability to exist in such a wide range of conditions has been achieved largely by behavioural and physiological adaptations with relatively slight morphological changes. It has been estimated that the number of species world-wide may be as high as 15000. This high species diversity has been attributed to the antiquity of the family, relatively low vagility leading to isolation, and evolutionary plasticity. In many aquatic ecosystems the number of chironomid species present may account for at least 50% of the total macroinvertebrate species recorded. This species richness, wide distribution and tolerance to adverse conditions has meant that the group is frequently recorded in ecological studies but taxonomic difficulties have in the past prevented non-specialist identification beyond family or subfamily level. Recent works, including genetic studies, have meant that the family is receiving much more attention globally.
Shrews, Chromosomes and Speciation
Author: Jeremy B. SearlePublisher: Cambridge University Press
ISBN: 1108759513
Category : Science
Languages : en
Pages : 499
Book Description
The chromosome complement (karyotype) often differs between related mammalian species (including humans vs chimpanzees), such that evolutionary biologists muse whether chromosomal difference is a cause or a consequence of speciation. The common shrew is an excellent model to investigate this problem because of its many geographical races (potential species) differing chromosomally, and its several sibling species (recently speciated forms) that are also chromosomally different. This system is an exceptional opportunity to investigate the role of chromosomes in speciation and this volume reflects detailed research following these approaches. Highlights include the demonstration that chromosomal re-arrangements can be associated with complete loss of gene flow and thus speciation and that selection within species hybrid zones may lead to de-speciation rather than speciation. This book represents an extraordinarily detailed consideration of the role of chromosomes in speciation in one astonishing species, providing insights to those interested in mammalian diversity, chromosomal evolution and speciation.
Issues in Life Sciences: Zoology: 2011 Edition
Author: Publisher: ScholarlyEditions
ISBN: 1464964386
Category : Science
Languages : en
Pages : 2398
Book Description
Issues in Life Sciences: Zoology / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Life Sciences—Zoology. The editors have built Issues in Life Sciences: Zoology: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Life Sciences—Zoology in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Life Sciences: Zoology: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Genetic Research on Commercially Exploited Fish Species in Nordic Countries
Author: Publisher: Nordic Council of Ministers
ISBN: 9289315083
Category : Fish culture
Languages : en
Pages : 156
Book Description
Maintaining Biodiversity in Forest Ecosystems
Author: Malcolm L. HunterPublisher: Cambridge University Press
ISBN: 9780521637688
Category : Nature
Languages : en
Pages : 720
Book Description
Discusses the ways in which we can continue to benefit from forests, while conserving their biodiversity.
Advances in Marine Biology
Author: Publisher: Academic Press
ISBN: 0080579418
Category : Science
Languages : en
Pages : 693
Book Description
Advances in Marine Biology
Forensic Entomology
Author: Jeffery Keith TomberlinPublisher: CRC Press
ISBN: 1466572418
Category : Law
Languages : en
Pages : 448
Book Description
The use of forensic entomology has become established as a global science. Recent efforts in the field bridge multiple disciplines including, but not limited to, microbiology, chemistry, genetics, and systematics as well as ecology and evolution. The first book of its kind, Forensic Entomology: International Dimensions and Frontiers provides an inc
Bibliographies and Literature of Agriculture
Author: Ecology of Populations
Author: Esa RantaPublisher: Cambridge University Press
ISBN: 9781139448529
Category : Nature
Languages : en
Pages : 400
Book Description
The theme of the book is the distribution and abundance of organisms in space and time. The core of the book lies in how local births and deaths are tied to emigration and immigration processes, and how environmental variability at different scales affects population dynamics with stochastic processes and spatial structure and shows how elementary analytical tools can be used to understand population fluctuations, synchrony, processes underlying range distributions and community structure and species coexistence. The book also shows how spatial population dynamics models can be used to understand life history evolution and aspects of evolutionary game theory. Although primarily based on analytical and numerical analyses of spatial population processes, data from several study systems are also dealt with.