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Nests, Floral Preferences, and Immatures of the Bee Haetosmia Vechti (Hymenoptera, Megachilidae, Osmiini)
Herein we describe the nests (including structure, closure, orientation, and depth of cells) of the bee Haetosmia vechti Peters found nesting in Rehovot, Israel. The nesting biology of H. vechti mirrors the ancestral nesting biology within the Osmia group of the Osmiini. Nests in sandy soil consist of an excavated burrow, ending below in a small cluster of vertical cells. The cells possess firm walls of masticated leaf pulp of Centaurea procurrens Spreng. and Heliotropium suaveolens M. Bieb., and are covered with pebbles and sand grains. The last larval instar and pupa of Haetosmia vechti are described, as is its cocoon. The immature stages exhibit the basic features of megachilid bees, but ...
Wildbienenschutz - von der Wissenschaft zur Praxis
Wildbienen sind in Mitteleuropa mit knapp 750 Arten vertreten. Die starke Abnahme des Angebotes an Blüten und Kleinstrukturen in weiten Teilen Mitteleuropas führte in den vergangenen Jahrzehnten zu einem alarmierenden Rückgang der Wildbienenbestände. Um die Bestäubung der Wild- und Kulturpflanzen langfristig zu sichern, bedarf es nicht nur der Honigbiene, sondern auch einer artenreichen Wildbienenfauna, daher sind Massnahmen zur Erhaltung und Förderung der Wildbienen dringend notwendig. Der vorliegende Band informiert über die faszinierenden Lebensweisen der Wildbienen und arbeitet die umfangreiche wissenschaftliche Fachliteratur zu Fragen des Wildbienenschutzes auf. Daraus werden kon...
Cancer Epigenetics
Cancer Epigenetics: Biomolecular Therapeutics in Human Cancer is the only resource to focus on biomolecular approaches to cancer therapy. Its presentation of the latest research in cancer biology reflects the interdisciplinary nature of the field and aims to facilitate collaboration between the basic, translational, and clinical sciences.
The Biology of Cancer
Thoroughly updated and incorporating the most important advances in the fast-growing field of cancer biology, The Biology of Cancer, Second Edition, maintains all of its hallmark features admired by students, instructors, researchers, and clinicians around the world.The Biology of Cancer is a textbook for students studying the molecular and cellula
Handbook on Immunosenescence
This authoritative handbook covers all aspects of immunosenescence, with contributions from experts in the research and clinical areas. It examines methods and models for studying immunosenescence; genetics; mechanisms including receptors and signal transduction; clinical relevance in disease states including infections, autoimmunity, cancer, metabolic syndrome, neurodegenerative diseases, frailty and osteoporosis; and much more.
Beneficial Microorganisms in Agriculture, Food and the Environment
Microorganisms are widely used in various beneficial applications, including food, pest control, bioremediation, biodegradation, biofuel processes, and plant symbiosis and growth stimulation. This book provides an overview of the available methodology for safety assessments of microorganisms, including determination of their infectivity and whether they produce toxic or sensitizing substances. Also covered are the regulatory systems in risk assessment and management of microbial products, quarantine legislations, international treaties, the importance of public risk perception and risk reducti
The Climb Up to Hell
In the heart of the Swiss Alps stand the three majestic peaks of the Bernese Oberland, Europe's most famous mountain range. The highest, at 13,638 feet, is the Jungfrau. Next is the Mönch, at 13,465 feet. But it is the smallest, the Eiger, rising 13,038 feet above sea level, that is by far the deadliest. Called a "living" mountain for its constantly changing conditions-unpredictable weather, disintegrating limestone surfaces, and continuously falling rock and ice-its mile-high north wall is perhaps the most dangerous climb in the world. And that may be just what beckons elite Alpinists to scale the treacherous peak against the odds. In 1957, nearly forty years before the well-known Mount Ev...
