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

Cephalopod Culture (Hardcover, 2014): Jose Iglesias, Lidia Fuentes, Roger Villanueva Cephalopod Culture (Hardcover, 2014)
Jose Iglesias, Lidia Fuentes, Roger Villanueva
R5,309 R4,988 Discovery Miles 49 880 Save R321 (6%) Ships in 10 - 15 working days

"Cephalopod Culture "is the first compilation of research on the culture of cephalopods. It describes experiences of culturing different groups of cephalopods: nautiluses, sepioids ("Sepia officinalis," "Sepia pharaonis," "Sepiella"" inermis," "Sepiella japonica"" Euprymna hyllebergi," "Euprymna tasmanica"), squids ("Loligo" "vulgaris," "Doryteuthis opalescens," " Sepioteuthis"" lessoniana") and octopods ("Amphioctopus aegina," "Enteroctopus megalocyathus," "Octopus maya," "Octopus"" mimus," "Octopus minor," "Octopus vulgaris," "Robsonella fontaniana"). It also includes the main conclusions which have been drawn from the research and the future challenges in this field. This makes this book not only an ideal introduction to cephalopod culture, but also a valuable resource for those already involved in this topic.

Beekeeping - From Science to Practice (Hardcover, 1st ed. 2017): Russell H. Vreeland, Diana Sammataro Beekeeping - From Science to Practice (Hardcover, 1st ed. 2017)
Russell H. Vreeland, Diana Sammataro
R1,974 Discovery Miles 19 740 Ships in 10 - 15 working days

This book will help beekeepers understand the fundamentals of beekeeping science. Written in plain and accessible language by actual researchers, it should be part of every beekeeper's library. The respective chapters not only present raw data; they also explain how to read and understand the most common figures. With topics ranging from honeybee nutrition to strains of Varroa resistant bees, from the effects of pesticide chemicals to understanding diseases, and including a discussion of venom allergies, the book provides essential "knowhow" that beekeepers will benefit from every time they inspect their hives. Further, each chapter ends with the author explaining how beekeepers can (or cannot) directly utilize the information to enhance their beekeeping operation. The text is structured to facilitate ease of use, with each author addressing the same four issues: 1) What are the specific purposes or goals of these experiments? Or more simply: what have these studies taught us? 2) How should a non-scientist read the data generated? 3) What are the key points in relation to practicing beekeepers' goals? 4) How can the data or techniques discussed be applied by beekeepers in their own apiaries? This approach allows readers to look up specific information quickly, understand it and even put it to use without having to read entire chapters. Further, the chapters are highly readable and concise. As such, the book offers a valuable guide and faithful companion for all beekeepers, one they can use day in and day out.

Invertebrate Embryology and Reproduction (Paperback): Fatma El-Bawab Invertebrate Embryology and Reproduction (Paperback)
Fatma El-Bawab
R3,432 Discovery Miles 34 320 Ships in 10 - 15 working days

Invertebrate Embryology and Reproduction deals with the practical and theoretical objectives of the descriptive embryology of invertebrates, along with discussions on reproduction in these groups of animals. It explains several morphological and anatomical expressions in the field and covers the embryology of invertebrate animals, starting from the Protozoa, to the Echinodermata, the Protochordate and Tunicates. These groups include economically important aquatic invertebrates, such as crustaceans, as well as medically important invertebrates and economic arthropods. Each chapter is preceded by the taxonomy of the discussed phylum and/or the species to enable the reader to locate the systematic position.

Earthworm Assisted Remediation of Effluents and Wastes (Hardcover, 1st ed. 2020): Sartaj Ahmad Bhat, Adarsh Pal Vig, Fusheng... Earthworm Assisted Remediation of Effluents and Wastes (Hardcover, 1st ed. 2020)
Sartaj Ahmad Bhat, Adarsh Pal Vig, Fusheng Li, Balasubramani Ravindran
R4,061 Discovery Miles 40 610 Ships in 18 - 22 working days

This book provides updated and comprehensive information on the effective functioning of earthworms used alone or in combination with other biological systems/microbes, as well as factors affecting the process and performance of vermiremediation under a range of conditions. It also compares earthworm assisted vermifiltration with other conventional biochemical methods. Presenting cutting-edge research on the earthworm assisted remediation of industrial and municipal effluents and sludges, along with its role in solid waste management (SWM), the book will benefit readers from the research community and industrial sector alike, familiarizing them with the latest remediation techniques for wastewater and different types of solid waste.

Phylogeography and Population Genetics in Crustacea (Paperback): Christoph Held, Stefan Koenemann, Christoph D. Schubart Phylogeography and Population Genetics in Crustacea (Paperback)
Christoph Held, Stefan Koenemann, Christoph D. Schubart
R1,322 Discovery Miles 13 220 Ships in 10 - 15 working days

Recently, technological progress and the rise of DNA barcoding efforts have led to a significant increase in the availability of molecular datasets on intraspecific variability. Carcinologists and other organismal biologists, who want to use molecular tools to investigate patterns on the scale of populations, face a bewildering variety of genetic markers, analytical methods, and computer programs from which to choose. A modern overview of population genetic and phylogeographic studies, Phylogeography and Population Genetics in Crustacea offers insights to guide research on intraspecific genetic variation in crustaceans. Combining theory and case studies of current best practices, the book helps researchers select methods of analysis and interpret their results. The theoretical chapters discuss the potential of currently used and upcoming molecular markers in the context of marine non-model species. They also gather practical tips and address the effect of seldom-discussed sources of error, such as spatial and temporal variation, stochasticity, and choice of statistical parameters. Case studies of marine and limnic crustaceans from around the world highlight the importance and diversity of sources of population structure in intraspecific variation. Written by an international team of 46 leading experts, the book showcases the use and analysis of molecular markers, including mitochondrial and nuclear DNA sequence data, coding and non-coding sequences, microsatellites, and cytogenetics. It gives researchers and students a valuable summary of current knowledge on the processes that shape genetic variability and geographic distribution patterns in space and time.

Biotechnological Approaches for Pest Management and Ecological Sustainability (Paperback): Hari C. Sharma Biotechnological Approaches for Pest Management and Ecological Sustainability (Paperback)
Hari C. Sharma
R2,073 Discovery Miles 20 730 Ships in 10 - 15 working days

Due to increasing problems occurring from massive applications of pesticides, such as insect resistance to pesticides, the use of biotechnological tools to minimize losses from insect pests has become inevitable. Presenting alternative strategies for alleviating biotic stresses, Biotechnological Approaches for Pest Management and Ecological Sustainability explores how the modern tools of biotechnology can be used in pest management for sustainable crop production, the biosafety of transgenic crops, and environmental conservation. This comprehensive work covers a gamut of issues ranging from host plant resistance to insect pests to the application of molecular approaches for pest management. It discusses phenotyping transgenic plants, mapping populations for insect resistance, physico-chemical and molecular markers associated with insect resistance, the potential of insect-resistant transgenic crops for pest management, and the use of biotechnological tools for diagnosing insects and monitoring insect resistance to insecticides. The author examines how genetic engineering can be used to produce robust natural enemies and more virulent strains of entomopathogenic microbes. He also studies issues related to gene flow, resistance to transgenes and selection markers, the biosafety of food derived from genetically engineered plants, and the potential application of molecular tools for solving some of the intricate pest problems in the future. Focusing on how to make the development and deployment of biotechnology-derived products for pest management safe and cost-effective, this book will enable readers to make informed decisions on genetically engineered organisms for pest management and sustainable crop production.

North American Psocoptera (Paperback): Edward L. Mockford North American Psocoptera (Paperback)
Edward L. Mockford
R2,007 Discovery Miles 20 070 Ships in 10 - 15 working days

North American Psocoptera provides a complete review of the 28 families, 78 genera and 287 species of the order Psocoptera found in the United States and Canada. This comprehensive book contains keys to all of the known taxa of Psocoptera which have been found in the study area, including three genera named as new. Not only are the native and established species included, but also those which have been taken at ports of entry in human commerce. The book contains differential diagnoses of the taxa above species level. For each named species there is an account consisting of synonymy, recognition features, relationships, distribution, and habitat. Included are 119 pages of illustrations, glossary, bibliography and index.

Marine Decapod Crustacea - A Guide to Families and Genera of the World (Hardcover): Gary C. B. Poore, Shane T Ahyong Marine Decapod Crustacea - A Guide to Families and Genera of the World (Hardcover)
Gary C. B. Poore, Shane T Ahyong
R6,674 Discovery Miles 66 740 Ships in 10 - 15 working days

The authors are two of the best taxonomic experts in crustacean decapods, who have established the actual taxonomy and systematic of numerous and important groups of decapods. They have introduced new views and approaches on the taxonomy, phylogeny and biogeography of these crustaceans. This international edition adds diagnoses and identification keys to all world families and genera: this information simply doesn't exist in any other book. During the last decade, the world register of marine species (WORMS) has created the list of known species and promoted the publication of numerous compilations on crustacean decapods. However, except specialists of each taxa, very few colleagues can identify correctly the new families and genera - there are no keys to these new groups. This book is the first to contain these world keys and is therefore a life rope for students, marine biologists, taxonomists and naturalists. The mixture of taxonomic line drawings, color illustrations and images of real-life specimens is extremely helpful for identification, especially when working in the field.

Insect Cell Culture Engineering (Paperback): Mattheus F. A. Goosen Insect Cell Culture Engineering (Paperback)
Mattheus F. A. Goosen
R2,035 Discovery Miles 20 350 Ships in 10 - 15 working days

Consolidating and expanding current, fundamental notions of virology and animal cell cultivation, this practical reference examines the development of insect cell culture techniques for the production of recombinant proteins and insect pathogenic viruses.;Resolving on-the-job problems such as sparging cell damage and reduced infectivity cells, Insect Cell Culture Engineering: includes special introductory material as well as background information on insect pathogenic viruses, the molecular biology of baculoviruses and bioreactor design; offers advice on how to save time when deciding which insect cell line, bioreactor and medium to exploit; discusses the preparation of mathematical modelling in animal cell culture; addresses the concerns associated with insect cell immobilization and the use of serum-free culture media; provides insights into the protective effects of polymer additives and insect cell gene expression in pharmaceutical research; and analyzes process scale-up and reactor design.;Bridging the gap between laboratory research and pilot plant scale insect culture/baculovirus technology, Insect Cell Culture Engineering is designed as a reference for biochemical and bioprocess engineers, bioprocess technologists, biochemists, molecular and cell biologists, microbiologists, and upper-level undergraduate and graduate students in these disciplines.

Invertebrate Paleontology (Mesozoic) of Israel and Adjacent Countries with Emphasis on the Brachiopoda (Hardcover): Howard B.... Invertebrate Paleontology (Mesozoic) of Israel and Adjacent Countries with Emphasis on the Brachiopoda (Hardcover)
Howard B. Feldman
R2,515 Discovery Miles 25 150 Ships in 10 - 15 working days

This book consists of a series of papers that help to unravel the taxonomy of the phylum Brachiopoda and describe associated marine communities in the Levant. These faunas inhabited shallow shelf environments near the boundary of the Indo-African and Tethyan faunal realms near the Jurassic equator along the southern Tethyan margin. This research is part of a long term project that aims to delineate the distribution of brachiopods across faunal realm boundaries and reconstruct the biogeographic history of the region. The work provides a more detailed analysis of the endemism that is characteristic of the faunas of northern Sinai, the Negev and Jordan, and will also aid in the construction of a biogeographic framework for Jurassic strata in the Middle East. It represents an important contribution to our knowledge of the evolution of modern marine communities because their roots lie in the ecological diversifications of the Jurassic.

The Biology and Fisheries of the Slipper Lobster (Paperback): Kari L. Lavalli, Ehud Spanier The Biology and Fisheries of the Slipper Lobster (Paperback)
Kari L. Lavalli, Ehud Spanier
R2,056 Discovery Miles 20 560 Ships in 10 - 15 working days

Written by international experts, The Biology and Fisheries of the Slipper Lobster provides comprehensive coverage of the known biology, ecology, behavior, physiology, evolutionary history, and genetics of the numerous species in the family Scyllaridae. It covers fishing methods and regulations, size and composition of catches, fisheries management, and distribution of those particular species that are targeted species or by-products of other fisheries. The book takes a comparative approach to understanding fisheries in different regions of the world and examines management plans that have failed and those that have succeeded.

The Ecology of Malaria Vectors (Hardcover): Jacques Derek Charlwood The Ecology of Malaria Vectors (Hardcover)
Jacques Derek Charlwood
R5,354 Discovery Miles 53 540 Ships in 10 - 15 working days

This practical book covers all aspects of the biology of malaria vectors, with notes on the vectors of dengue. It is the first work in this field to concentrate on mosquitoes, rather than covering all disease vectors. Authored by renowned field entomologist Jacques Derek Charlwood, it disseminates his vast experience working on mosquito biology, ecology and the evaluation of new vector control tools across five continents over the past 40 years. Covering all aspects from classification and systematics, population dynamics, vector control, to surveillance and sampling, epidemics, and a selection of case histories, the book also considers genetics and resistance, Aedes biology, and malaria and dengue models. It is designed to fill the gap between very specialized texts and undergraduate books on general disease vectors, and is ideal as a textbook for postgraduate courses in entomology and mosquito vectors of disease.

Biointensive Integrated Pest Management in Horticultural Ecosystems (Hardcover, 2014 ed.): P. Parvatha Reddy Biointensive Integrated Pest Management in Horticultural Ecosystems (Hardcover, 2014 ed.)
P. Parvatha Reddy
R6,334 Discovery Miles 63 340 Ships in 18 - 22 working days

Through Green Revolution in late 1960s, India achieved self-sufficiency in food production, but still the country has not achieved self-sufficiency in production of horticultural crops. Most of the growth in food production during the green revolution period is attributed to the use of higher levels of fertilizers and pesticides which are continuing to destroy stable traditional ecosystems. The challenge before the crop protection scientist is to increase yields from the existing land without harming the environment and resource base. This can be achieved by adopting eco-friendly Biointensive Integrated Pest Management (BIPM) strategy.

BIPM incorporates ecological and economic factors into agricultural system design and decision making, and addresses public concerns about environmental quality and food safety. The benefits of implementing BIPM can include reduced chemical input costs, reduced on-farm and off-farm environmental impacts, and more effective and sustainable pest management. An ecology-based IPM has the potential of decreasing inputs of fuel, machinery, and synthetic chemicals-all of which are energy intensive and increasingly costly in terms of financial and environmental impact. Such reductions will benefit the grower and society.

The present book deals with the most recent biointensive integrated approaches for pest management utilizing components such as bioagents predators, parasitoids and pathogens (bacteria, fungi, viruses)], botanicals (biofumigation, oil cakes, FYM, compost, crop residues, green manuring and other organic amendments), arbuscular mycorrhizal fungi, physical methods (hot water treatment of planting material, soil solarization), cultural methods (crop rotation, summer ploughing, fallowing, intercropping, pruning, mulching, spacing, planting date, trap cropping, "etc."), biorational chemicals (pheromones) and resistant cultivars. This book can serve as a useful reference to policy makers, research and extension workers, practicing farmers and students. The material can also be used for teaching post-graduate courses."

International Horseshoe Crab Conservation and Research Efforts: 2007- 2020 - Conservation of Horseshoe Crabs Species Globally... International Horseshoe Crab Conservation and Research Efforts: 2007- 2020 - Conservation of Horseshoe Crabs Species Globally (Hardcover, 1st ed. 2022)
John T. Tanacredi, Mark L. Botton, Paul K S Shin, Yumiko Iwasaki, Siu Gin Cheung, …
R6,622 Discovery Miles 66 220 Ships in 10 - 15 working days

The first International Conference on Horseshoe Crab's Conservation conducted at Dowling College, USA, (2007) and it's proceedings published by Springer in 2009, prompted the continued research and conservation efforts presented at subsequent conferences and colloquium in Hong Kong, Taiwan, (2011); San Diego, CA, (2014), (CERF); Japan, Sasebo (2015) and an accepted inclusion for a special session on Horseshoe Crabs at the 2017 CERF Conference held in Providence, RI, USA. All these aforementioned conferences contributed manuscripts, posters, workshop "position papers", and oral presentations the majority of which have not been published in total. In 2015, Carmichael et al. had published by Springer the majority of manuscripts from the 2011 Hong Kong / Taiwan conference. However, workshop results and all subsequent presentations and workshops were not. The Japan conference presented over 40 papers alone. A collection of all workshop summaries, poster presentations and new manuscript submittals (San Diego, CA; Sasebo, Japan; and Providence, RI) as well as products prepared for the IUCN World Congress in Hawaii, (2016), are included potential contributions for review in this compilation now available for global distribution in this Springer Nature publication.The "Proceedings of International Conferences on the Biology and Conservation of Horseshoe Crabs", thus contains over 50 manuscripts and a diversified collection of documents, photos and memorabilia covering all four of the horseshoe crab species globally: their biology, ecology evolution, educational, and societal importance. This book exposes the impacts that humans have imposed on all four of these species, revealing through the coordinated effort of horseshoe crab scientists with the IUCN, of the worldwide need for a clear conservative effort to protect these paleo- survival organisms from a looming extinction event. Biologists, conservationists, educators, and health professionals will all welcome this book not only for exploration of its pharmacological interest, but also for the mystery of their longevity. This book also clarifies the future research needs and the conservation agenda for the species worldwide. Anyone working or studying estuaries on a global scale, will need to obtain this seminal work on horseshoe crabs.

Freshwater Bivalve Ecotoxicology (Paperback): Jerry L. Farris, John H. van Hassel Freshwater Bivalve Ecotoxicology (Paperback)
Jerry L. Farris, John H. van Hassel
R2,112 Discovery Miles 21 120 Ships in 10 - 15 working days

Responding to the growing need for an aggressive yet conservative approach to evaluating mussel populations, Freshwater Bivalve Ecotoxicology provides a collective review of the techniques and approaches for assessing contaminant impact on freshwater ecosystems. The editors incorporate coverage of research topics and management issues from a cross-section of scientists in the field. They explore current advances in general monitoring of population responses to stressors, fundamental concepts of ecotoxicology specific to burrowing bivalves, and useful insights that offer direction and priority for resolving specific problems challenging protection and conservation efforts. This book lays the groundwork with discussions of topics such as impact assessment, toxicokinetics, biomarkers, and pollution tolerance. The authors then explore fundamental concepts surrounding responses measured in freshwater bivalves as a consequence of chemical exposures or accumulated contaminants in target organs or tissues. They highlight the difficulties encountered with the laboratory culture of these organisms for toxicity testing or other controlled experiments, and examine the use of surrogate test organisms to relate sensitivities of response and reduce pressure on already impacted fauna. The book also reviews innovative field research using in situ bivalve toxicity testing, discusses effects-oriented tissue contaminant assessment, and concludes with threefour specific laboratory or combined field/laboratory ecotoxicology studies. A summary of methods from more than 75 laboratory toxicity studies conducted with freshwater mussels, the book provides an overview of a standardized method for conducting water-only acute and chronic laboratory toxicity tests with glochidia juvenile freshwater mussels. It focuses on studies that report measured contaminant treatments, had robust experimental designs, including replication of control and contaminant treatments, and were publish

Handbook of Pest Management (Paperback): John R. Ruberson Handbook of Pest Management (Paperback)
John R. Ruberson
R2,172 Discovery Miles 21 720 Ships in 10 - 15 working days

"Provides a detailed summary of pest management principles and techniques, outlining a broad selection of critical issues regarding current practice and future technology in this area. Discusses the role of soils, weather, and surrounding habitats in regulating pest occurrence and severity."

Biology and Ecology of Edible Marine Bivalve Molluscs (Hardcover): Ramasamy Santhanam Biology and Ecology of Edible Marine Bivalve Molluscs (Hardcover)
Ramasamy Santhanam
R3,858 Discovery Miles 38 580 Ships in 10 - 15 working days

This comprehensive volume provides a plethora of first-hand information on the diversity, biology, and ecology of edible marine bivalve molluscs. It covers the biology of edible marine bivalves; profiles about 180 species, providing information on their habitat, distribution, morphology, food and feeding, reproduction, conservation status, etc.; discusses their nutritional values; examines their pharmaceutical value; and looks at their diseases and parasites. This abundance of knowledge is presented in an easy-to-read style with informative illustrations. Marine bivalve molluscs play important roles in the marine ecosystems by filtering water and serving as habitat and prey for a variety of sea life. This diverse group of species, estimated at around 9,200, inhabits virtually the entire world's oceans, from the balmy tropics to the sub-zero Arctic, and from deep oceans to sandy and rocky shorelines. Among the marine bivalves, a total of 180 species (including mussels, oysters, scallops, cockles, and clams) have long been a part of the diet of coastal human populations. Many species of marine bivalves are also commercially important for other purposes, such as pearls and shells for jewelry and decoration. The volume, part of the Biology and Ecology of Marine Life book series, will be of great use to students and researchers in fisheries science, marine biology, aquatic biology, and zoology.

Microbial Pest Control (Paperback): Sushil Khetan Microbial Pest Control (Paperback)
Sushil Khetan
R2,043 Discovery Miles 20 430 Ships in 10 - 15 working days

A complete overview of the technologies and products for microbial-based pest control. It documents the use of genetically altered Bt and transgenic crops, microbial formulations, and synergistic interactions of microbials with synthetic chemicals, as well as the management of Bt foliar applications and Bt genes in transgenic crops. The book includes case studies and pathogen, products and manufacturers indices.

Proceedings of the 4th International Symposium on Trichoptera, Clemson, South Carolina, 11-16 July 1983 (Hardcover): John C.... Proceedings of the 4th International Symposium on Trichoptera, Clemson, South Carolina, 11-16 July 1983 (Hardcover)
John C. Morse
R7,908 Discovery Miles 79 080 Ships in 18 - 22 working days
Area-Wide Control of Insect Pests - From Research to Field Implementation (Hardcover): M. J. B. Vreysen, A.S. Robinson, J.... Area-Wide Control of Insect Pests - From Research to Field Implementation (Hardcover)
M. J. B. Vreysen, A.S. Robinson, J. Hendrichs
R11,496 Discovery Miles 114 960 Ships in 10 - 15 working days

Insect pests are becoming a problem of ever-more biblical proportions. This new textbook collates a series of selected papers that attempt to address various fundamental components of area-wide insect pest control. Of special interest are the numerous papers on pilot and operational programs that pay special attention to practical problems encountered during program implementation. It 's a compilation of more than 60 papers authored by experts from more than 30 countries.

Processionary Moths and Climate Change : An Update (Hardcover, 2015 ed.): Alain Roques Processionary Moths and Climate Change : An Update (Hardcover, 2015 ed.)
Alain Roques
R5,232 R4,911 Discovery Miles 49 110 Save R321 (6%) Ships in 10 - 15 working days

Because of its peculiar biology, its negative impacts on forestry, and its urticating larvae affecting human and animal health, pine processionary moth has largely been studied in many European countries during the last century. However, knowledge remained scattered and no synthesis has ever been published. Since the IPCC retained the moth as one of the two insect indicators of climate change because of its expansion with warming up, filling this gap became increasingly important. Led by INRA, this book associates 101 authors from 22 countries of Europe, Minor Asia and North Africa, combining all the concerned research fields (entomology, ecology, genetics, mathematical modelling, medical and veterinary science, pest management) in a multidisciplinary approach to understand and model the processes underlying past, present and future moth expansion and to propose adapted management methods. Besides, the major biological patterns of the related processionary species are also detailed.

Medical and Veterinary Entomology (Paperback, 3rd edition): Gary R. Mullen, Lance A. Durden Medical and Veterinary Entomology (Paperback, 3rd edition)
Gary R. Mullen, Lance A. Durden
R2,741 R2,347 Discovery Miles 23 470 Save R394 (14%) Ships in 10 - 15 working days

The first and second editions of Medical and Veterinary Entomology, edited by Gary R. Mullen and Lance A. Durden, published in 2002 and 2009, respectively, have been highly praised and become widely used as a textbook for classroom instruction. This fully revised third edition continues the focus on the diversity of arthropods affecting human and animal health, with separate chapters devoted to each of the taxonomic groups of insects and arachnids of medical or veterinary concern, including spiders, scorpions, mites, and ticks. Each chapter includes sections on taxonomy, morphology, life history, and behavior and ecology, with separate sections on those species of public-health and veterinary importance. Each concludes with approaches to management of pest species and prevention of arthropod-borne diseases. The third edition provides a comprehensive source for teaching medical and/or veterinary entomology at the college and university level, targeted particularly at upper-level undergraduate and graduate/postgraduate programs. In addition to its value as a student textbook, the volume has appeal to a much broader audience, specialists and non-specialists alike. It provides a key reference for biologists in general, entomologists, zoologists, parasitologists, physicians, public-health personnel, veterinarians, wildlife biologists, vector biologists, military entomologists, the general public and others seeking a readable, authoritative account on this important topic.

Reproduction and Development in Annelida - Series on: Reproduction and Development in Aquatic Invertebrates (Hardcover): T. J... Reproduction and Development in Annelida - Series on: Reproduction and Development in Aquatic Invertebrates (Hardcover)
T. J Pandian
R5,341 Discovery Miles 53 410 Ships in 10 - 15 working days

This book is a concise informative elucidation of all aspects of reproduction and development in annelids covering from arenicola to tubifex. Annelids flourish between 4,900 m depth to 2,000 m altitude; some of them occur in unusual habitats like hydrothermal vents and subterranean aquatic system (stigobionts). A few have no gut and acquire adequate nutrients through osmotrophism and/or engaging symbiotic microbes. In the absence of exoskeleton to escape predation, the 17,000 speciose annelids have explored bewildering modes of reproduction; not surprisingly, 42-47% of them are brooders. With 13,000 species, polychaetes are gonochores but some 207 species of them are hermaphrodites. Clitellates are all hermaphrodites; of them, 76 species are parthenogens, of which 56 are earthworms. Regenerative potency of annelids ranges from an organ to an entire worm from a single 'seminal' segment. The head, tail and both together can be regenerated 21, 42 and 20 times, respectively. However, the potency is limited to ~1% of polychaetes and < 2% of oligochaetes. In oligochaetes, the chloragogue temporally separates regeneration and reproduction but sedentary polychaetes undertake them together at the reduced reproductive output. Only 79 polychaete and 111 oligochaete species have the potency for clonal reproduction. Within families, the potency ranges from 2% in spionids to 54% in naidids. Epitoky, a spectacular and unique phenomenon, involves the transformation from benthic to meroplanktonic reproductive morphism. It occurs in 106 errant polychaete species. The larger glycerides, nereidids and eunicids use muscular energy to climb < 50 m vertical distance. But the small phyllodocids and cteniodrilids may reduce buoyancy to climb 1,000-4,000 m vertical distance. Heterogamatic sex determination is reported to occur only in six polychaete species, although karyotype is known for 83 annelid species. In temperate polychaetes, a dozen neuroendocrines, arising mostly from the 'brain' regulates reproductive cycle. A complete chapter devoted to vermiculture, (i) recognizes the fast-growing candidate species, (ii) distinguishes 'layers' from 'brooders', (iii) indicates that the harvest of oligochaetes may reduce the input of nitrogenous fertilizer in the ricefield, and (iv) explores the scope for increasing wealth from waste.

Revival: Insect-Plant Interactions (1992) - Volume IV (Paperback): Elizabeth A. Bernays Revival: Insect-Plant Interactions (1992) - Volume IV (Paperback)
Elizabeth A. Bernays; Contributions by Neil S. Cobb, Suzanne Koptur, Louis M. Schoonhoven, Gwendolyn L Waring, …
R1,195 R1,130 Discovery Miles 11 300 Save R65 (5%) Ships in 10 - 15 working days

This is the fourth volume of a series devoted to providing a comprehensive review of the study of plant-eating insects, covering topics ranging from biochemistry to ecology and evolution. Volume IV examines the status of mutualism, using the fig-insect interaction; phytosterols as important components of adaptive syndromes in herbivorous insects; methods utilized by plant-eating insects to detect compounds that deter feeding, including the various codes and how and why they vary; and the nature and significance of extrafloral nectaries in plants. The book also covers the varied roles of quinolizidines in plants, in addition to reviewing the controversial arena of plant stress and insect performance. Insect-Plant Interactions, Volume IV, is an important reference work for entomologists, zoologists, ecologists, and other scientists involved in studies with insect-plant interactions.

Insect-Plant Interactions (1990) - Volume II (Paperback): Elizabeth A. Bernays Insect-Plant Interactions (1990) - Volume II (Paperback)
Elizabeth A. Bernays
R1,299 Discovery Miles 12 990 Ships in 10 - 15 working days

Insect-Plant Interactions is a series devoted to reviews across the breadth of the topic from cellular mechanisms to ecology and evolution. Articles are selected from areas of particular current interest or subjects that would especially benefit from a new review. It is hoped that the interdisciplinary selection in each volume will help readers to enter new fields of insect-plant interactions.

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