Xem 1-20 trên 288 kết quả Insects
  • In contrast to other animals, humans sense their world chiefly by vision, sound, and touch. We have, in general, a remarkably undeveloped sense of smell, and so it is not surprising that we fail to appreciate how important chemical signals are in the lives of other organisms. Chemical signals and cues serve insects in numerous ways, including sexual advertisement, social organization, defense, and finding and recognizing resources.

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  • Use of Fungi for Insect Control - Issues, Developments & Research Needs Entomopathogenic Fungi • Classification • Pathogenesis • Why fungi as BCA’s? • Commercialization • Registration • Some examples • Research Agriculture and Agriculture et Agri-Food Canada Agroalimentaire Canada

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  • An Ecosystem Approach provides a modern perspective of insect ecology that integrates two approaches traditionally used to study insect ecology: evolutionary and ecosystem. This integration substantially broadens the scope of insect ecology and contributes to prediction and resolution of the effects of current environmental changes, as these affect and are affected by insects. The third edition includes an updated and expanded synthesis of feedback and interactions between insects and their environment.

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  • The present work is a review of all the organisms thus far reported from Lebanese amber. Various paleoentomologists have contributed to the study of Lebanese amber insects. Studies by Paul Whalley, once at the British Museum, have been especially useful. However, works like ours are also made possible by those who go into the field and search for amber sites. Scientists are indebted to these individuals since, without their zeal, there would not be many scientific descriptions of amber fossils or books like the present one....

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  • This short book is about conserving insects, the most diverse and abundant animals that share our world. In particular, it is about the common focus of conserving individual species of insects. This so-called ‘fine filter’ (or ‘fine grain’) level of conservation parallels much conservation effort for better-understood groups of animals such as mammals and birds, for which species-focused conservation exercises are commonplace.

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  • Some say that ‘the cockroach’ will be the last species on Earth to survive. Then it has been calculated that one gravid aphid, left to reproduce with zero mortality, will, after one year, cover the globe with an aphid layer over 140 km thick. Not forgetting too, that flies and fleas vector disease. So, why should we even consider conserving insects? Quite simply, without insects, the likelihood is that the world as we know it would be radically changed in a matter of days. Besides, it is only a tiny minority of insects that harm our lives.

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  • The book ''An insect tale" with vivid images and detailed guidance will help students more interested in learning English vocabulary. The Pedagogy you English majors may use this document in teaching English to children. Invite you to consult.

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  • Tham khảo sách 'insect ecology an ecosystem approach', nông - lâm - ngư, nông nghiệp phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Pest and disease management continues to be an important challenge to the agricultural community. Confronted with the shifts in pest pressure and the rise in new pest and crop problems, coupled with public concern over pesticide use and more stringent environmental regulations, today’s crop producer must exhibit good stewardship and stay current with new technologies in order to produce high-quality crops in a profitable manner.

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  • Project Gutenberg's Social Life in the Insect World, by J. H. Fabre This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at Title: Social Life in the Insect World Author: J. H. Fabre Translator: Bernard Miall Release Date: May 8, 2006

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  • This book is part of the Green Chemistry series published by the Royal Society of Chemistry, and is designed to provide a modern overview of the current status of insecticides. We present the current approaches for insect pest control as green alternatives to classical agrochemicals, which should be of interest to a vast group of researchers: agrochemists, biochemists, chemists, toxicologists, etc. Throughout the book, the different approaches to pest control which involve ‘‘greener chemicals’’ in particular are emphasized.

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  • Chapter 7 INSECT SYSTEMATICS: PHYLOGENY AND CLASSIfiCATION Because there are so many guides to the identity and classification of birds, mammals, and flowers, it is tempting to think that every organism in the living world is known. However, if we compared different books, treatments will vary, perhaps concerning the taxonomic status of a geographical.

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  • T his second edition provides an updated and expanded synthesis of feedbacks and interactions between insects and their environment. A number of recent studies have advanced understanding of feedbacks or provided useful examples of principles. Molecular methods have provided new tools for addressing dispersal and interactions among organisms and have clarified mechanisms of feedback between insect effects.

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  • SECTION I ECOLOGY OF INDIVIDUAL INSECTS THE INDIVIDUAL ORGANISM IS A FUNDAMENTAL unit of ecology. Organisms interact with their environment and affect ecosystem processes largely through their cumulative physiological and behavioral responses to environmental variation. Individual success in finding and using necessary habitats and resources to gain reproductive advantage determines fitness.

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  • Chapter 1 THE IMPORTANCE, DIVERSITY, AND CONSERVATION OF INSECTS Curiosity alone concerning the identities and lifestyles of the fellow inhabitants of our planet justifies the study of insects. Some of us have used insects as totems and symbols in spiritual life, and we portray them in art and music.

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  • Chapter 8 INSECT BIOGEOGRAPHY AND EVOLUTION The insects have had a long history since the divergence of the Hexapoda from the Crustacea many millions of years ago. In this time the Earth has undergone much evolution itself, from droughts to floods, from ice ages to arid heat.

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  • Chapter 12 INSECT SOCIETIES The study of insect social behaviors is a popular entomological topic and there is a voluminous literature, ranging from the popular to the highly theoretical. The proliferation of some insects, notably the ants and termites, is attributed to the major change from a solitary lifestyle.

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  • Chapter 2 E XTERNAL ANATOMY Insects are segmented invertebrates that possess the articulated external skeleton (exoskeleton) characteristic of all arthropods. Groups are differentiated by various modifications of the exoskeleton and the appendages – for example, the Hexapoda to which the Insecta belong.

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  • Chapter 6 INSECT DEVELOPMENT AND LIFE HISTORIES In this chapter we discuss the pattern of growth from egg to adult – the ontogeny – and life histories of insects. The various growth phases from the egg, through immature development, to the emergence of the adult are dealt with.

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  • Chapter 15 MEDICAL AND VETERINARY ENTOMOLOGY Aside from their impact on agricultural and horticultural crops, insects impinge on us mainly through the diseases they can transmit to humans and our domestic animals. The number of insect species involved is not large, but those that transmit disease, cause wounds, inject venom.

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