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Books > Science & Mathematics > Biology, life sciences > Zoology & animal sciences > Invertebrates

Ordnung Coleoptera (LARVEN) (Paperback, 1978 ed.): B Klausnitzer Ordnung Coleoptera (LARVEN) (Paperback, 1978 ed.)
B Klausnitzer
R1,446 Discovery Miles 14 460 Ships in 18 - 22 working days

Seit der Herausgabe des umfassenden Werkes von GHJLAROV (1964) uber die boden- bewohnenden Insektenlarven hat sich unser Wissen uber Kaferlarven bedeutend erweitert. GHJLAROV fuhrt bei gleicher Auffassung der Familien in seinem Familien- schlussel 70 Taxa an (hier 93). Nach den Tabellen der einzelnen Familien sind durch sein Buch ca. 470 Gattungen bestimmbar (hier 653). Ausserdem wurden in den vorliegenden Band 16 Familien aufgenommen, fur die GHJLAROV keinen Gattungs- schlussel bringt. Es ist nicht moglich gewesen, Tabellen bis zur Art (wie bei GHJLA- ROV} aufzunehmen. Fur spater ist eine Fortfuhrung dieses Buches geplant, und es sollen Bestimmungstabellen bis zu den Arten geschaffen werden. Auf den ersten Blick mag es verwunderlich erscheinen, wenn Familien, die vor- wiegend in Pilzen leben (z. B. Mycetophagidae), Bewohner faulenden Holzes (z. B. Serropalpidae) oder Familien, die vorwiegend in der Kraut- und Strauchschicht leben (z. B. Ooccinellidae) in dieses Buch aufgenommen wurden. Tatsachlich ist es aber so, dass alle hier behandelten Familien in Material aus Bodenfallen mehr oder minder regelmassig gefunden werden. Die eigentlich nicht zur Fauna des Bodens oder der Bodenoberflache gehorenden Ooccinellidae wurden beispielsweise mit 15,4% aller Kaferlarven bei einer Untersuchung uber die epigaische Fauna von Fichtenwaldern nachgewiesen. Es wurde darauf verzichtet, dieser Arbeit eine ver- gleichende Morphologie der Coleopte;renlarven voranzustellen. Die wesentlichsten Bestimmungsmerkmale werden anschlieQend in einer kurzen Ubersicht erlautert. Ziel des vorliegenden Buches ist eine moglichst leichte Diagnose von Kaferlarven.

Insect Diapause (Hardcover): David L. Denlinger Insect Diapause (Hardcover)
David L. Denlinger
R1,613 Discovery Miles 16 130 Ships in 10 - 15 working days

Our highly seasonal world restricts insect activity to brief portions of the year. This feature necessitates a sophisticated interpretation of seasonal changes and enactment of mechanisms for bringing development to a halt and then reinitiating it when the inimical season is past. The dormant state of diapause serves to bridge the unfavourable seasons, and its timing provides a powerful mechanism for synchronizing insect development. This book explores how seasonal signals are monitored and used by insects to enact specific molecular pathways that generate the diapause phenotype. The broad perspective offered here scales from the ecological to the molecular and thus provides a comprehensive view of this exciting and vibrant research field, offering insights on topics ranging from pest management, evolution, speciation, climate change and disease transmission, to human health, as well as analogies with other forms of invertebrate dormancy and mammalian hibernation.

Precision Crop Protection - the Challenge and Use of Heterogeneity (Paperback, 2010 ed.): Erich-Christian Oerke, Roland... Precision Crop Protection - the Challenge and Use of Heterogeneity (Paperback, 2010 ed.)
Erich-Christian Oerke, Roland Gerhards, Gunter Menz, Richard A Sikora
R6,548 Discovery Miles 65 480 Ships in 18 - 22 working days

Precision farming is an agricultural management system using global navigation satellite systems, geographic information systems, remote sensing, and data management systems for optimizing the use of nutrients, water, seed, pesticides and energy in heterogeneous field situations. This book provides extensive information on the state-of-the-art of research on precision crop protection and recent developments in site-specific application technologies for the management of weeds, arthropod pests, pathogens and nematodes. It gives the reader an up-to-date and in-depth review of both basic and applied research developments. The chapters discuss I) biology and epidemiology of pests, II) new sensor technologies, III) applications of multi-scale sensor systems, IV) sensor detection of pests in growing crops, V) spatial and non-spatial data management, VI) impact of pest heterogeneity and VII) precise mechanical and chemical pest control.

Sensory Systems and Communication in Arthropods - Including the First Comprehensive Collection of Contributions by Soviet... Sensory Systems and Communication in Arthropods - Including the First Comprehensive Collection of Contributions by Soviet Scientists (Paperback, Softcover reprint of the original 1st ed. 1990)
Wiese, Gribakin
R1,463 Discovery Miles 14 630 Ships in 18 - 22 working days
Insect Collection and Identification - Techniques for the Field and Laboratory (Paperback, 2nd edition): Timothy J. Gibb,... Insect Collection and Identification - Techniques for the Field and Laboratory (Paperback, 2nd edition)
Timothy J. Gibb, Christian Oseto
R2,073 Discovery Miles 20 730 Ships in 10 - 15 working days

Insect Collection and Identification: Techniques for the Field and Laboratory, Second Edition, is the definitive text on all aspects required for collecting and properly preparing specimens for identification. This book provides detailed taxonomic keys to insects and related arthropods, giving recent classification changes to various insect taxa, along with updated preservation materials and techniques for molecular and genomic studies. It includes methods of rearing, storing and shipping specimens, along with a supporting glossary. New sections provide suggestions on how insects and other arthropods can be used within, and outside, the formal classroom and examine currently accepted procedures for collecting insects at crime scenes. This book is a necessary reference for entomology professionals and researchers who seek the most updated taxonomy and techniques for collection and preservation. It will serve as a valuable resource for entomology students and professionals who need illustrative and detailed information for easy arthropod identification.

Protein Aggregation and Fibrillogenesis in Cerebral and Systemic Amyloid Disease (Paperback, 2012 ed.): J.Robin Harris Protein Aggregation and Fibrillogenesis in Cerebral and Systemic Amyloid Disease (Paperback, 2012 ed.)
J.Robin Harris
R5,306 Discovery Miles 53 060 Ships in 18 - 22 working days

This volume of the Subcellular Biochemistry series is the result of the long-standing research interest of the editor in the molecular mechanism underlying Alzheimer's disease and other amyloid diseases, indicated also by the earlier book in the series (Volume 38), devoted to Alzheimer's disease. The broad coverage within the present amyloidogenesis book represents an attempt to collate current knowledge relating to the proteins and peptides involved in most of the known amyloid diseases, together with some amyloid/fibril-forming proteins and peptides that are not involved in diseases. Thus, the range of topics included is comprehensive and furthermore it was thought appropriate to include both basic science and clinical presentation of the subjects under discussion.

The Phylogenetic System of Ephemeroptera (Paperback, Softcover reprint of the original 1st ed. 2004): Nikita Kluge The Phylogenetic System of Ephemeroptera (Paperback, Softcover reprint of the original 1st ed. 2004)
Nikita Kluge
R5,278 Discovery Miles 52 780 Ships in 18 - 22 working days

The fIrst draft version of this book, written in systematics of Neoptera) had two different editions English and named "Draft revision of supraspecies in Russian - in 1999 and in 2000 (Kluge 2000). taxa of Ephemeroptera (without Atalophlebiinae)," English version of this fIrst volume is also prepared, was prepared as an Internet publication in 1998; but not published yet. thanks to Dr. Michael Hubbard (Florida A & M Uni versity), it has been available from the web site "Ephemeroptera Galactica" since 1998. The second NEW TERMS, TAXA NAMES AND version, written in Russian and named "Revision of SYNONYMS supra-species taxa of Ephemeroptera (except for Atalophlebialfgl)," was prepared as an Internet publication in 2000; from 2001 till now it has been New terms: plesiomorphon (instead of wrongly available from the web site of Biological Faculty of used "plesion," p. 16); basitornal margin, tornoapical S-Petersburg University, http: //www. bio. pu. ruJwinl margin, amphitornal margin of wing or wing bud entomollKLUGEIEPHEMER -"content_. htm. Both (p. 31); tergalius (instead of formerly used "tergalia" versions contain the systematics of all mayflies or "tergalium," p. 35); caudalius, tricaudale, basitri except for Atalophlebialfgl. The present Volume 1 caudale, cercotractor (p. 38). does not contain the systematics of Turbanoculata For some morphological terms type taxa are (i. e. Baetidae auct. ) nor of all Leptophlebialfg1 (i. e. designated. Till now this was not practised, but in Leptophlebiidae auct."

A Master of Science History - Essays in Honor of Charles Coulston Gillispie (Paperback, 2012 ed.): Jed Z. 'Buchwald A Master of Science History - Essays in Honor of Charles Coulston Gillispie (Paperback, 2012 ed.)
Jed Z. 'Buchwald
R4,735 Discovery Miles 47 350 Ships in 18 - 22 working days

New essays in science history ranging across the entire field and related in most instance to the works of Charles Gillispie, one of the field's founders.

Machine Learning in Medicine - Part Two (Paperback, 2013 ed.): Ton J. Cleophas, Aeilko H. Zwinderman Machine Learning in Medicine - Part Two (Paperback, 2013 ed.)
Ton J. Cleophas, Aeilko H. Zwinderman
R1,408 Discovery Miles 14 080 Ships in 18 - 22 working days

Machine learning is concerned with the analysis of large data and multiple variables. However, it is also often more sensitive than traditional statistical methods to analyze small data. The first volume reviewed subjects like optimal scaling, neural networks, factor analysis, partial least squares, discriminant analysis, canonical analysis, and fuzzy modeling. This second volume includes various clustering models, support vector machines, Bayesian networks, discrete wavelet analysis, genetic programming, association rule learning, anomaly detection, correspondence analysis, and other subjects. Both the theoretical bases and the step by step analyses are described for the benefit of non-mathematical readers. Each chapter can be studied without the need to consult other chapters. Traditional statistical tests are, sometimes, priors to machine learning methods, and they are also, sometimes, used as contrast tests. To those wishing to obtain more knowledge of them, we recommend to additionally study (1) Statistics Applied to Clinical Studies 5th Edition 2012, (2) SPSS for Starters Part One and Two 2012, and (3) Statistical Analysis of Clinical Data on a Pocket Calculator Part One and Two 2012, written by the same authors, and edited by Springer, New York.

The Biology of Imaginal Disks (Paperback, Softcover reprint of the original 1st ed. 1972): H Ursprung, R. Noethiger The Biology of Imaginal Disks (Paperback, Softcover reprint of the original 1st ed. 1972)
H Ursprung, R. Noethiger
R1,389 Discovery Miles 13 890 Ships in 18 - 22 working days

~o working hypothesis amounts to much until it has been tested on suitable material. Indeed, the choice of an appropriate experimental system has often been the key to the solution of a problem. The present volume is devoted to insect imaginal disks. These groups of larval cells are the primordia of precisely characterized adult counterparts, without apparent function in larvae. At the onset of metamorphosis, the subtle interplay of hormonal signals brings growth to a halt, and differentiation begins. In the fruitfly, a host of mutations are known to affect the development of disks; these provide ample material for analysis. It was largely ERNST HADORN'S ingenuity that directed the attention of many scientists around the world to this promising experimental system, and to him this volume is dedicated. All the contributors have been associated with him at one time or another, as graduate students, postdoctoral fellows, or colleagues. Each author has attempted to cover comprehensively the topic assigned to him. This has inevitably led to some overlapping, for which the editors should be blamed, not the authors, as this results from the way the topic was subdivided at the outset. We believe this volume will be a welcome sourcebook for the specialist in the field, and a provocative monograph for the uninitiated scientist interested in the exciting area of cell determination.

Bees and Wasps (Paperback): Oswald H.Latter Bees and Wasps (Paperback)
Oswald H.Latter
R693 Discovery Miles 6 930 Ships in 10 - 15 working days

Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. Bees and Wasps by Oswald H. Latter was first published in 1913. Containing an engaging guide to British species of Hymenoptera, the text will remain of value to anyone with an interest in entomology and the history of science.

The Flea (Paperback): Harold Russell The Flea (Paperback)
Harold Russell
R664 Discovery Miles 6 640 Ships in 10 - 15 working days

Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. The Flea by Harold Russell was first published in 1913. The text contains a variety of information regarding fleas, much of which had only recently been discovered by zoologists at the time of publication.

Pearls (Paperback): W.J. Dakin Pearls (Paperback)
W.J. Dakin
R665 Discovery Miles 6 650 Ships in 10 - 15 working days

Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. Pearls by W. J. Dakin was first published in 1913. The book presents a biologically-focused summary of the key facts regarding pearls, pearl fishing and pearl formation.

The Life-Story of Insects (Paperback, Revised): G. H. Carpenter The Life-Story of Insects (Paperback, Revised)
G. H. Carpenter
R664 Discovery Miles 6 640 Ships in 10 - 15 working days

Originally published during the early part of the twentieth century, the Cambridge Manuals of Science and Literature were designed to provide concise introductions to a broad range of topics. They were written by experts for the general reader and combined a comprehensive approach to knowledge with an emphasis on accessibility. The Life-Story of Insects by G. H. Carpenter was first published in 1913. The book contains an informative account of the facts and meanings of insect transformations, allowing scope for further entomological investigation in the field.

Annotated Catalogue of African Grasshoppers - Supplement (Paperback): H.B. Johnston Annotated Catalogue of African Grasshoppers - Supplement (Paperback)
H.B. Johnston
R1,484 Discovery Miles 14 840 Ships in 10 - 15 working days

Mr Johnston's Annotated Catalogue of African Grasshoppers (Cambridge, 1956) presented a complete list of all species recorded from Africa up to the end of 1953. A bibliography of almost 1000 titles was used and summaries after each species gave full references to published descriptions, synonyms, figures and data on distribution, ecology, habits and economic importance. This Supplement continues the index up to the end of 1965, and also includes a few important papers published early in 1966. Since 1953, acridologists have paid considerable attention to the African fauna, and 416 new species and subspecies have been described. The control of pests such as grasshoppers and locusts is closely related to their biology, and so research must be based on a knowledge of taxonomy and systematics. Like the original Catalogue, the Supplement will be a fantastic work of reference for acridologists throughout the world.

Synthetic Biology - From iGEM to the Artificial Cell (Paperback, 2014 ed.): Manuel Porcar, Juli Pereto Synthetic Biology - From iGEM to the Artificial Cell (Paperback, 2014 ed.)
Manuel Porcar, Juli Pereto
R1,360 Discovery Miles 13 600 Ships in 18 - 22 working days

Synthetic Biology (SB) is a revolutionary discipline with a vast range of practical applications, but is SB research really based on engineering principles? Does it contributing to the artificial synthesis of life or does it utilise approaches sufficiently advanced to fall outside the scope of biotechnology or metabolic engineering? This volume reviews the development of SB and includes the major milestones of the discipline, the 'top-down' and 'bottom-up' approaches towards the construction of an artificial cell and the development of the "iGEM" competition. We conclude that SB is an emerging field with extraordinary technological potential, but that most research projects actually are an extension of metabolic engineering since the complexity of living organisms, their tight dependence on evolution and our limited knowledge of the interactions between the molecules, actually make life difficult to engineer.

Genetic Mechanisms of Speciation in Insects - Symposia held at the XIVth International Congress of Entomology, Canberra,... Genetic Mechanisms of Speciation in Insects - Symposia held at the XIVth International Congress of Entomology, Canberra, Australia August 22-30, 1972, sponsored by the Australian Academy of Science and the Australian Entomological Society (Paperback, Softcover reprint of the original 1st ed. 1974)
M.J.D. White
R1,391 Discovery Miles 13 910 Ships in 18 - 22 working days

Two Symposia on speciation in insects held at the Fourteenth International Congress of Entomology (Canberra, Australia, August 22-30, 1972) are included in this volume. The first, on the more general topic of Genetic Analysis of Speciation Mechanisms, includes four papers on speciation in various groups of Diptera and Orthopteroid insects. The second symposium was devoted to the topic of Evolution in the Hawaiian Drosophilidae; it deals with the explosive speciation of a group of flies with specialized ecological requirements in the complex ecolOgical habitats provided by a recent tropical volcanic archipelago. The Hawaiian Symposium, organized by Professor D. Elmo Hardy, is the latest outcome of a major collaborative research project involving over 20 scientists and about 125 technical assistants over a period of ten years. Some recent books on evolution have taken the standpoint that the funda mental genetic mechanism of speciation is relatively uniform and stereotyped and, in particular, that the 'allopatric' model of its geographic component is universally valid. Certainly, this has been a rather generally accepted viewpoint on the part of students of vertebrate speciation. Workers on speciation in insects have tended, in general, to be less dogmatic and more willing to consider a variety of alternative models of speciation. Thus, in the present volume, several contributions adopt viewpoints which are unorthodox or novel. Only time will tell whether their conclusions will turn out to have been soundly based."

Flea Biology and Control - The Biology of the Cat Flea Control and Prevention with Imidacloprid in Small Animals (Paperback,... Flea Biology and Control - The Biology of the Cat Flea Control and Prevention with Imidacloprid in Small Animals (Paperback, Softcover reprint of the original 1st ed. 2001)
Friederike Kramer, Norbert Mencke
R1,385 Discovery Miles 13 850 Ships in 18 - 22 working days

1 Fleas are wingless insects with a laterally compressed body of about 1.5-4 mm length. Like all insects they possess six legs and three body segments. Taxonomically they belong to the order Siphonaptera (Eckert et al. 2000) (Table 1). This family contains several species and subspecies. Fleas represent one of the most important ectoparasites (Mehl- horn 2000; Mehlhorn et al. 2001b). At the moment there are more than 2000 described species and subspecies throughout the world (Borror et al. 1981). These species belong to the families Pulicidae, including Pulex spp., Ctenocephalides spp., Spilopsyllus spp. and Archaeopsyllus spp., or the familia Ceratophyllidae with the genuses Ceratophyllus or Nosopsyllus to mention only some of the most important veterinary and human representatives. Fleas have a history of about 60 million years and were already found on prehistoric mammals. While becoming parasitic the original exterior of the two-wing insects, also designated as the order Diptera, has changed by losing the wings in the adults, whereas the larval form still has similarity with the larva of the order Diptera (Strenger 1973). About 95% of the -2000 different flea species parasitize on mammals, 5% live on birds. Table 1. Taxonomy of fleas Systematic Taxonomy Phylum Arthropoda Tracheata (=Antennata) Subphylum Classis Insecta (Hexapoda) Ordo Siphonapterida Familia Pulicidae Familia CeratophyUidae Genus Ctenocephalides. Genus Ceratophyllus. Nosopsyllus Pulex.

The Leafcutter Ants - Civilization by Instinct (Paperback): Bert Hoelldobler, Edward O. Wilson The Leafcutter Ants - Civilization by Instinct (Paperback)
Bert Hoelldobler, Edward O. Wilson
R493 Discovery Miles 4 930 Ships in 9 - 17 working days

The Leafcutter Ants is the most detailed and authoritative description of any ant species ever produced. With a text suitable for both a lay and a scientific audience, the book provides an unforgettable tour of Earth's most evolved animal societies. Each colony of leafcutters contains as many as five million workers, all the daughters of a single queen that can live over a decade. A gigantic nest can stretch thirty feet across, rise five feet or more above the ground, and consist of hundreds of chambers that reach twenty-five feet below the ground surface. Indeed, the leafcutters have parlayed their instinctive civilization into a virtual domination of forest, grassland, and cropland from Louisiana to Patagonia. Inspired by a section of the authors' acclaimed The Superorganism, this brilliantly illustrated work provides the ultimate explanation of what a social order with a half-billion years of animal evolution has achieved."

Imms' General Textbook of Entomology - Volume 2: Classification and Biology (Paperback, 10th ed. 1977. Softcover reprint... Imms' General Textbook of Entomology - Volume 2: Classification and Biology (Paperback, 10th ed. 1977. Softcover reprint of the original 10th ed. 1977)
O.W. Richards, R.G. Davies
R2,829 Discovery Miles 28 290 Ships in 18 - 22 working days

seem as appropriate now as the original balance was when Dr A. D. Imms' textbook was first published over fifty years ago. There are 35 new figures, all based on published illustrations, the sources of which are acknowledged in the captions. We are grateful to the authors concerned and also to Miss K. Priest of Messrs Chapman & Hall, who saved us from many errors and omissions, and to Mrs R. G. Davies for substantial help in preparing the bibliographies and checking references. London O. W. R. R. G. D. May 1976 Part III THEORDERSOFINSECTS THE CLASSIFICATION AND PHYLOGENY OF INSECTS The classification of insects has passed through many changes and with the growth of detailed knowledge an increasing number of orders has come to be recognized. Handlirsch (1908) and Wilson and Doner (1937) have reviewed the earlier attempts at classification, among which the schemes of Brauer (1885), Sharp (1899) and Borner (1904) did much to define the more distinctive recent orders. In 1908 Handlirsch published a more revolutionary system, incorporating recent and fossil forms, which gave the Collembola, Thysanura and Diplura the status of three independent Arthropodan classes and considered as separate orders such groups as the Sialoidea, Raphidioidea, Heteroptera and Homoptera. He also split up the old order Orthoptera, gave its components ordinal rank and regrouped them with some of the other orders into a subclass Orthopteroidea and another subclass Blattaeformia.

Crustacea and Arthropod Relationships (Paperback): Stefan Koenemann, Ronald Jenner Crustacea and Arthropod Relationships (Paperback)
Stefan Koenemann, Ronald Jenner
R2,059 Discovery Miles 20 590 Ships in 10 - 15 working days

Compared to other arthropods, crustaceans are characterized by an unparalleled disparity of body plans. Traditionally, the specialization of arthropod segments and appendages into distinct body regions has served as a convenient basis for higher classification; however, many relationships within the phylum Arthropoda still remain controversial. Can Crustacea even be considered a monophyletic group? If so, then which are their closest relatives within the Arthropoda? The answers to questions such as these will play a key role in understanding patterns and processes in arthropod evolution, including the disappearance of certain body plans from the fossil record, as well as incidences of transition from aquatic to terrestrial environments. Crustacea and Arthropod Relationships, written by a team of internationally recognized experts, presents a wide variety of viewpoints, while offering an up-to-date summary of recent progress across several disciplines. With rich detail and vibrancy, it addresses the evolution and phylogenetic relationships of the Arthropoda based upon molecular, developmental, morphological, and paleontological evidence. Volume 16 is the first in the series to not be exclusively dedicated to discussions specific to crustaceans. While it is still crustaceo-centric, the focus of this volume has been extended to include other groups of arthropods along with the Crustacea. This wider focus offers challenging opportunities to evaluate higher-level relationships within the Arthropoda from a carcinologic perspective. This volume is dedicated to the career of Frederick R. Schram, the founding editor of CrustaceanIssues in 1983, in recognition of his many stimulating and wide-ranging contributions to the evolutionary biology of arthropods in general, and of crustaceans in particular.

Evolution in the Dark - Adaptation of Drosophila in the Laboratory (Paperback, 2014 ed.): Naoyuki Fuse, Tasuku Kitamura,... Evolution in the Dark - Adaptation of Drosophila in the Laboratory (Paperback, 2014 ed.)
Naoyuki Fuse, Tasuku Kitamura, Takashi Haramura, Kentaro Arikawa, Michio Imafuku
R1,562 Discovery Miles 15 620 Ships in 18 - 22 working days

How organisms come to possess adaptive traits is a fundamental question for evolutionary biology. Although it is almost impossible to demonstrate evolution in the laboratory, this issue can be approached by using an unusual organism, Dark-fly: "Drosophila melanogaster" kept in complete darkness for 57 years through 1,400 generations, which corresponds to 28,000 years in terms of human generations. Has Dark-fly adapted to an environment of total darkness? If so, what is the molecular nature of the adaptation? In "Evolution in the Dark," the remarkable findings from the Dark-fly project performed at Kyoto University are presented. It was found that Dark-fly did not have poor eyesight, but rather exhibited higher phototaxis ability and displayed lengthened bristles on the head that function as tactile receptors. Circadian rhythms were weakened but still retained in Dark-fly. With recent progress in genome science enabling researchers to perform whole genome sequencing for Dark-fly, a large number of mutations were identified including genes encoding a light receptor, olfactory receptors, and enzymes involved in neural development. The Dark-fly project is a simple but very long-term experiment. Combined with advanced techniques in genetics and genomics, it is a valuable tool for understanding the molecular nature of adaptive evolution."

The Lives of Bees - The Untold Story of the Honey Bee in the Wild (Hardcover): Thomas D. Seeley The Lives of Bees - The Untold Story of the Honey Bee in the Wild (Hardcover)
Thomas D. Seeley
R1,105 R958 Discovery Miles 9 580 Save R147 (13%) Ships in 18 - 22 working days

How the lives of wild honey bees offer vital lessons for saving the world's managed bee colonies Humans have kept honey bees in hives for millennia, yet only in recent decades have biologists begun to investigate how these industrious insects live in the wild. The Lives of Bees is Thomas Seeley's captivating story of what scientists are learning about the behavior, social life, and survival strategies of honey bees living outside the beekeeper's hive-and how wild honey bees may hold the key to reversing the alarming die-off of the planet's managed honey bee populations. Seeley, a world authority on honey bees, sheds light on why wild honey bees are still thriving while those living in managed colonies are in crisis. Drawing on the latest science as well as insights from his own pioneering fieldwork, he describes in extraordinary detail how honey bees live in nature and shows how this differs significantly from their lives under the management of beekeepers. Seeley presents an entirely new approach to beekeeping-Darwinian Beekeeping-which enables honey bees to use the toolkit of survival skills their species has acquired over the past thirty million years, and to evolve solutions to the new challenges they face today. He shows beekeepers how to use the principles of natural selection to guide their practices, and he offers a new vision of how beekeeping can better align with the natural habits of honey bees. Engagingly written and deeply personal, The Lives of Bees reveals how we can become better custodians of honey bees and make use of their resources in ways that enrich their lives as well as our own.

Handbook of Genetics - Volume 1 Bacteria, Bacteriophages, and Fungi (Paperback, Softcover reprint of the original 1st ed.... Handbook of Genetics - Volume 1 Bacteria, Bacteriophages, and Fungi (Paperback, Softcover reprint of the original 1st ed. 1974)
Robert C. King
R4,119 Discovery Miles 41 190 Ships in 18 - 22 working days

The purpose of this and future volumes of the Handbook of Genetics is to bring together a collection of relatively short, authoritative essays or annotated compilations of data on topics of significance to geneticists. Many of the essays will deal with various aspects of the biology of certain species selected because they are favorite subjects for genetic investigation in nature or the laboratory. Often there will be an encyclopedic amount of information available on such a species, with new papers appearing daily. Most of these will be written for specialists in a jargon that is be wildering to a novice, and sometimes even to a veteran geneticist working with evolutionarily distant organisms. For such readers what is needed is a written introduction to the morphology, life cycle, reproductive be havior, and culture methods for the species in question. What are its par ticular advantages (and disadvantages) for genetic study, and what have we learned from it? Where are the classic papers, the key bibliographies, and how does one get stocks of wild type or mutant strains? The chapters devoted to different species will contain information of this sort. Only a few hundreds of the millions of species available to biologists have been subjected to detailed genetic study. However, those that have make up a very heterogeneous sample of the living world."

Encyclopedia of South American Aquatic Insects: Hemiptera - Heteroptera - Illustrated Keys to Known Families, Genera, and... Encyclopedia of South American Aquatic Insects: Hemiptera - Heteroptera - Illustrated Keys to Known Families, Genera, and Species in South America (Paperback, 2011 ed.)
Charles W. Heckman
R8,873 Discovery Miles 88 730 Ships in 18 - 22 working days

Hemiptera - Heteroptera encompasses the three well-defined suborders of the true bugs which are adapted to an aquatic or littoral habitat. The book begins with a section on the biology these insects and provides illustrations of the basic features of their morphology and outlines the larval development. Brief outlines of the ecological and zoogeographical peculiarities of the three aquatic suborders are presented individually, and various methods for observing, collecting, preserving, rearing, and examining specimens are discussed. Most of the book is devoted to keys for the identification of adults to species, and notes are provided that will help recognize the known larvae. Unlike most other aquatic insects, the larval instars of the heteropteran species closely resemble the adults in their morphology, preferred habitats, and feeding habits. Therefore, distinguishing features of those relatively few larvae which have been described in detail are usually mentioned in the keys to the adults rather than being included in separate keys. In addition to the most important features for determining the individual species, many keys include additional notes on the morphology, which is intended to give the user a better chance of recognizing specimens of species not yet known to science. After the currently recognized name of each species, the known range is provided. Regions of the world outside of South America, South American countries, and the states of Brazil from which the species has been reported are listed. Following the range information, major synonyms previously used for the species in the literature are provided. If subspecies have been described and are still recognized as such, they are also discussed. Finally, if the status of the species is regarded as uncertain because of a poor description, strong resemblance to another species, or any other reason, a note is added that a detailed study will be necessary to clarify the status of the taxon. Taxonomic revisions in the book itself are strictly avoided. To provide the user of the keys with maximum assistance in making reliable identifications, the book is richly illustrated with pen and ink drawings of thousands of individual morphological structures arranged in 820 figures. The book is intended to make a significant impact toward popularizing the study of South American water bugs by assembling and condensing the information in hundreds of individual publications on the group, which appeared in many books and journals published in many different countries over the past 200 years. Some of these works are very difficult to obtain in South America, and their lack creates serious impediments to systematic, ecological, and zoogeographical research. In the more than 730 titles appearing in the bibliography, the original descriptions and revisions of almost all South American species can be found.

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Robert W. Sussman, Audrey R Chapman Paperback R1,498 Discovery Miles 14 980
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