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Author : L. SOMME
Release : 1989
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Adaptations of terrestrial arthropods to the alpine environment by : L. SOMME
Download or read book Adaptations of terrestrial arthropods to the alpine environment written by L. SOMME. This book was released on 1989. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John L. Cloudsley-Thompson
Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 608/5 ( reviews)
Book Synopsis Evolution and Adaptation of Terrestrial Arthropods by : John L. Cloudsley-Thompson
Download or read book Evolution and Adaptation of Terrestrial Arthropods written by John L. Cloudsley-Thompson. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended as a textbook for 3rd year undergraduate students, as well as postgraduate students. It comprises a review of the current opinion regarding the evolution and adaptation of terrestrial arthropods, beginning with the paleontological, embryological, morphological and physiological evidence. The implication of size is then considered in relation to life on land. A discussion of insect phylogeny and the origin of flight is followed by an account of evolutionary trends in reproduction. Further chapters cover adaptations to extreme environments, dispersal and migration, defensive mechanisms and, finally, present arguments for the success of the terrestrial arthropods in general.
Author : Lauritz Somme
Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 838/5 ( reviews)
Book Synopsis Invertebrates in Hot and Cold Arid Environments by : Lauritz Somme
Download or read book Invertebrates in Hot and Cold Arid Environments written by Lauritz Somme. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: A comparison of the adaptations made by invertebrates in polar deserts with those of temperate and subtropical deserts. These regions represent some of the most hostile environments on earth, demanding an array of strategies for survival. Polar species are well adapted to the cold and have to cope with arid conditions due to low precipitation and lack of liquid water during the winter. Similarly, temperate desert invertebrates have adapted to dry conditions and are also exposed to low winter temperatures. Terrestrial arthropods maintain their water-balance through behavioural and physiological adaptations. Tardigrades and nematodes are remarkable in their ability to shed all their water before entering a state of anhydrobiosis only to be revived when moisture once again becomes available.
Author : Katsuhiro Konno
Release : 2020-03-25
Genre : Medical
Kind : eBook
Book Rating : 408/5 ( reviews)
Book Synopsis Arthropod Venom Components and Their Potential Usage by : Katsuhiro Konno
Download or read book Arthropod Venom Components and Their Potential Usage written by Katsuhiro Konno. This book was released on 2020-03-25. Available in PDF, EPUB and Kindle. Book excerpt: Thousands of arthropod species, ranging from arachnids (spiders and scorpions) to hymenopterans (ants, bees, and wasps) and myriapods (centipedes), are venomous and use their venoms for both defense and predation. These venoms are invariably harmful to humans, and some may cause serious injuries, e.g., those from scorpions, spiders, and wasps. Arthropods’ venoms are also known as rich sources of biologically active compounds and have attracted the attention of toxin researchers for years. In this century, venom component analysis has progressed considerable due to the advances in analytical techniques, in particular, mass spectrometry and next-generation deep (DNA and RNA) sequencing. As such, proteomic and peptidomic analyses using LC–MS have enabled the full analysis of venom components, revealing a variety of novel peptide and protein toxins sequences and scaffolds, potentially useful as pharmacological research tools and for the development of highly selective peptide ligands and therapeutic leads, like chlorotoxin. Due to their specificity for numerous ion-channel subtypes, including voltage- and ligand-gated ion channels, arthropod neurotoxins have been investigated to dissect and treat neurodegenerative diseases and control epileptic syndromes. This Special Issue collects information on such progress, encouraging contributions on the chemical and biological characterization of venom components, not only peptides and proteins, but also small molecules, their mechanisms of action, and the development of venom-derived peptide leads.
Author : Laszlo Nagy
Release : 2012-12-06
Genre : Science
Kind : eBook
Book Rating : 679/5 ( reviews)
Book Synopsis Alpine Biodiversity in Europe by : Laszlo Nagy
Download or read book Alpine Biodiversity in Europe written by Laszlo Nagy. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: The United Nations Conference on the Environment and Development (UNCED), held in Rio de Janeiro in 1992, spawned a multitude of pro grammes aimed at assessing, managing and conserving the earth's biological diversity. One important issue addressed at the conference was the mountain environment. A specific feature of high mountains is the so-called alpine zone, i. e. the treeless regions at the uppermost reaches. Though covering only a very small proportion of the land surface, the alpine zone contains a rela tively large number of plants, animals, fungi and microbes which are specifi cally adapted to cold environments. This zone contributes fundamentally to the planet's biodiversity and provides many resources for mountain dwelling as well as lowland people. However, rapid and largely man-made changes are affecting mountain ecosystems, such as soil erosion, losses of habitat and genetic diversity, and climate change, all of which have to be addressed. As stated in the European Community Biodiversity Strategy, "the global scale of biodiversity reduction or losses and the interdependence of different species and ecosystems across national borders demands concerted international action". Managing biodiversity in a rational and sustainable way needs basic knowledge on its qualitative and quantitative aspects at local, regional and global scales. This is particularly true for mountains, which are distributed throughout the world and are indeed hot spots of biodiversity in absolute terms as well as relative to the surrounding lowlands.
