Download e-book for kindle: Advances in Chemical Signals in Vertebrates by Dietland Müller-Schwarze (auth.), Robert E. Johnston,

By Dietland Müller-Schwarze (auth.), Robert E. Johnston, Dietland Müller-Schwarze, Peter W. Sorensen (eds.)

ISBN-10: 1461371457

ISBN-13: 9781461371458

ISBN-10: 1461547334

ISBN-13: 9781461547334

The box of olfactory study and chemical communique is within the early phases of progressive switch, and lots of points of this revolution are mirrored within the chapters during this publication. therefore, it's going to serve admirably as an updated reference. First, a variety of vertebrate teams and species are represented. moment, there are first-class studies of particular issues and theoretical techniques to verbal exchange via odors, together with chapters on sign specialization and evolution in mammals, the evolution of hormonal pheromones in fish, alarm pheromones in fish, chemical repellents, the chemical signs occupied with endocrine responses in mice, and the debate over human pheromones. 3rd, there are intriguing new findings offered in different particular subject parts, reminiscent of the chemis­ attempt of pheromones in quite a lot of species (salamanders to elephants), the chemistry of proteins that regulate the discharge of pheromones, the molecular biology and body structure of detection, coding and reaction to smell indications, the consequences of expertise on sensitivity to odors, the position of genes of the immune method in scent construction and in human mate selection, the functionality and conception of odor over-marks, the popularity of people and family members by means of odors, the impact of odors on predator-prey interactions, and using odors to assist keep an eye on pests. This ebook is an offshoot of the 8th foreign Symposium on Chemical Sig­ nals in Vertebrates, held at Cornell college in Ithaca, long island, July 20-25, 1997, hosted and arranged through Bob Johnston.

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4). These scenarios all suggest that fish may have 'unused' olfactory sensitivity to hormonal products (or portions of products) which their conspecifics no longer produce. If true, then were an individual of such a species to release a new product(s) which stimulated these 'unused' receptors, that individual (and the products it produced) might be favored by receivers because the addi- Evolution and Specialization of Fish Hormonal Pheromones 33 tion of the new product would make its odor unusually stimulatory.

2. Signal Elaboration. 4). This process involves the production of new products and sensitivity to them, thus requiring co-evolution of the physiology and behavior of signal donors and receivers. Production of such elaborated mixtures could (but need not) involve specialized glands. Several extra-gonadal structures have been proposed to produce pheromones in fish (Nelson, 1964; Laumen, Pern & Blum, 1974), but the identities of the putative pheromones are unknown. Signal elaboration as defined above might arise via two routes, the Good Genes or Runaway Selection Hypotheses (Figure 3), both involving mate choice and co-evolution of receiver and donor.

The nature and importance of extrinsic factors is expected to vary greatly between species and situations. Such factors may be complex and can be associated with both intraspecific and interspecific interactions as well as environmental factors. 2). g. 4]). Although we discuss intrinsic and extrinsic factors separately, they undoubtedly function together to drive the evolution of hormonal pheromones through a dynamic web of ecological, physiological and genetic relationships unique to each system.

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Advances in Chemical Signals in Vertebrates by Dietland Müller-Schwarze (auth.), Robert E. Johnston, Dietland Müller-Schwarze, Peter W. Sorensen (eds.)

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