Download or read book Odonata Biology of Dragonflies written by B.K. Tyagi and published by Scientific Publishers. This book was released on 2007-10-01 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dragonflies (Odonata), represented by over 6000 known species, are unique insects. In more than one feature they differ, at the very first glance, from all other insect superorders including their nearest allies, the mayflies (Ephemeropteroidea). The Zygoptera and Anisoptera, on the other hand, are the dominant groups. Being voracious predators in both immature (aquatic) and adult (aerial) stages they are important elements of all, except the drier (or high alpine) environments in temperate and tropical regions, occupying a position at the apex of the food chain of invertebrate life. Many dragonfly species are tested biological control agents for several disease-transmitting vector mosquitoes, especially Aedes species. They are also ideal organisms to be used as indicators of water pollution and contamination. Many species serve as intermediate hosts of fluke parasites of birds, and thus are important in the transmission of parasitic diseases, especially of domestic poultry and wild ducks. Because of their unique morphology and physiology, dragonflies are used extensively in the study of many biological phenomena. All these subjects are discussed in this unique book comprising twenty three articles written by expert odonatologists from different parts of the world. The book is written in a lucid and comprehensible language, and will likely be useful to both the professional and amateur alike.
Download or read book Dragonflies and Damselflies of the West written by Dennis Paulson and published by Princeton University Press. This book was released on 2009-04-13 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dragonflies and Damselflies of the West is the first fully illustrated field guide to all 348 species of dragonflies and damselflies in western North America. Dragonflies and damselflies are large, stunningly beautiful insects, as readily observable as birds and butterflies. This unique guide makes identifying them easy--its compact size and user-friendly design make it the only guide you need in the field. Every species is generously illustrated with full-color photographs and a distribution map, and structural features are illustrated where they aid in-hand identification. Detailed species accounts include information on size, distribution, flight season, similar species, habitat, and natural history. Dennis Paulson's introduction provides an essential primer on the biology, natural history, and conservation of these important and fascinating insects, along with helpful tips on how to observe and photograph them. Dragonflies and Damselflies of the West is the field guide naturalists, conservationists, and dragonfly enthusiasts have been waiting for. Covers all 348 western species in detail Features a wealth of color photographs Provides a color distribution map for every species Includes helpful identification tips Serves as an essential introduction to dragonflies and their natural history
Download or read book The Dragonflies of British Columbia written by Robert A. Cannings and published by . This book was released on 1977 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introducing the Dragonflies of British Columbia and the Yukon written by Robert A. Cannings and published by . This book was released on 2002 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birding and butterfly watching have been popular outdoor activities for decades. Now, dragonfly watching is catching on as a fascinating and enjoyable pursuit. Dragonflies are large, colorful insects with amazing and easily observed behavior. Noted entomologist Dr Robert Cannings introduces students, naturalists and outdoor enthusiasts to the world of dragonflies. In this compact book, he shows readers where to find dragonflies and how to watch and study them in the field. In the introduction, Dr Cannings outlines the natural history of these insects - their structure, life cycles, habitats and behavior. Then he describes the 88 species known in British Columbia and the Yukon, noting habitat preferences and distribution. To make identification easy, each description has one or more color photographs and comparisons with similar species.
Download or read book Dragonfly Genera of the New World written by Rosser W. Garrison and published by JHU Press. This book was released on 2006-09-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the Single Volume Reference/Science award of the Professional and Scholarly Publishing Awards given by the Association of American Publishers Dragonfly Genera of the New World is a beautifully illustrated and comprehensive guide to the taxonomy and ecology of dragonflies in North, Middle, and South America. A reference of the highest quality, this book reveals the striking beauty and complexity of this diverse order. Although Odonata—dragonflies and damselflies—are among the most studied groups of insects, until now there has been no reliable means to identify the New World genera of either group. This volume provides fully illustrated and up-to-date keys for all dragonfly genera with descriptive text for each genus, accompanied by distribution maps and 1,595 diagnostic illustrations, including wing patterns and characteristics of the genitalia. For entomologists, limnologists, and ecologists, Dragonfly Genera of the New World is an indispensable resource for field identification and laboratory research.
Download or read book Dragonfly Nymphs of North America written by Kenneth J. Tennessen and published by Springer. This book was released on 2019-03-11 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is the first of its kind devoted entirely to the dragonfly nymphs of North America north of Mexico, the focus being accurate identification of the 330 species of Anisoptera that occur in the region. Nymphal external morphology is described and illustrated in detail, and all terms needed to navigate the dichotomous keys are defined. Species are tabulated with references that provide the most detailed, accurate descriptions for each; species that are inadequately described are so indicated. The key separating the seven families in the region contains several new characters. The families are then covered separately: Aeshnidae (13 genera), Gomphidae (17 genera), Petaluridae (2 genera), Cordulegastridae (2 genera), Macromiidae (2 genera), Corduliidae (7 genera), and Libellulidae (29 genera). Each family is further characterized, followed by a generic key. A drawing of the habitus and diagnostic details for each genus are provided, along with additional diagnostic remarks and notes on habitat and life cycle; for each genus, a map shows its geographic distribution in North America. Full-grown nymphs of all known species of each genus are keyed and diagnosed; characters that apply to earlier instars are noted. Morphological variation in character states was analyzed in order to assess the reliability of previously utilized characters and to discover new characters. Most of the characters used to distinguish all levels of taxa are illustrated; a total of 702 figures, comprising 1,800 original drawings, along with selected photographs where necessary for clarity, accompany the keys. Measurements of total length, head width, and other variables for each species are provided in tables. Difficulties with past keys and descriptions, including errors, omissions and other shortcomings, are addressed. The importance of nymph characters in helping solve generic and specific distinctions and their role in phylogenetic studies is emphasized. Methods for collecting, rearing, and preserving dragonfly nymphs and exuviae are presented. The final chapter discusses research opportunities on North American Anisoptera nymphs, including taxonomic needs, studies on structure and function, life history and microhabitat, water quality indices and conservation efforts. The habitus drawings of all genera are arranged according to family in five plates (Appendix I); although the book is intended as a lab manual, these plates conveniently allow for comparison based on nymph shape making field identification to genus possible in many cases. Appendix II contains a brief history of dragonfly nymph studies in North America. A glossary and an index to scientific names are included.
Download or read book Conservation of Dragonflies written by Michael J. Samways and published by CABI. This book was released on 2024-06-11 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dragonflies are among the most familiar and popular of all insects, deeply embedded in human cultural history. They are iconic and tell us much about the environments in which we and they live. Their conservation is an important part of biodiversity conservation. One modern dragonfly species is listed as extinct, with many others currently threatened. It is now essential to increase conservation efforts towards saving these threatened species, with strategies now available for doing this. Recovery of dragonfly populations goes hand in hand with improvements to both freshwater conditions and bank vegetation quality. In contrast, some other dragonfly species have benefitted greatly from human transformation of the landscape, with artificial ponds in particular, increasing the population levels of many species. In turn, climate change is seeing many geographical range shifts. Conservation of Dragonflies: Sentinels for Freshwater Conservation is for naturalists, citizen scientists, entomologists and conservation scientists, as well as practitioners and policy makers around the world.
Download or read book The Odonata of Canada and Alaska The Anisoptera three families by E M Walker P S Corbet written by Edmund Murton Walker and published by . This book was released on 1953 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book British Columbia Dragonflies Odonata written by Francis Cecil Whitehouse and published by . This book was released on 1941 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Odonata of Canada and Alaska General The Zygoptera written by Edmund Murton Walker and published by . This book was released on 1953 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The North American Dragonflies of the Genus Aeshna written by Edmund Murton Walker and published by . This book was released on 1912 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Insects of California written by Robert Leslie Usinger and published by Univ of California Press. This book was released on with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Insects of California with Keys to North American Genera and California Species written by Robert L. Usinger and published by Univ of California Press. This book was released on 2024-03-29 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1956. This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived
Download or read book Methods for Collection and Analysis of Aquatic Biological and Microbiological Samples written by and published by . This book was released on 1989 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forests and Dragonflies written by Worldwide Dragonfly Association and published by Pensoft Publishers. This book was released on 2006 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Odonata of Canada and Alaska The Anisoptera written by Edmund Murton Walker and published by . This book was released on 1958 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dragonflies of North America written by James George Needham and published by . This book was released on 2000 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
