By Dietland Müller-Schwarze (auth.), Robert E. Johnston, Dietland Müller-Schwarze, Peter W. Sorensen (eds.)
The box of olfactory learn and chemical conversation is within the early phases of progressive swap, and lots of features of this revolution are mirrored within the chapters during this booklet. therefore, it's going to serve admirably as an up to date reference. First, a variety of vertebrate teams and species are represented. moment, there are first-class experiences of particular subject matters and theoretical methods to communique by way of 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 enthusiastic about endocrine responses in mice, and the talk over human pheromones. 3rd, there are fascinating new findings awarded in different particular subject components, reminiscent of the chemis test of pheromones in quite a lot of species (salamanders to elephants), the chemistry of proteins that keep watch over the discharge of pheromones, the molecular biology and body structure of detection, coding and reaction to scent indications, the consequences of expertise on sensitivity to odors, the function of genes of the immune procedure in scent construction and in human mate selection, the functionality and notion of smell over-marks, the popularity of people and family through odors, the impression of odors on predator-prey interactions, and using odors to assist regulate pests. This ebook is an offshoot of the 8th foreign Symposium on Chemical Sig nals in Vertebrates, held at Cornell college in Ithaca, big apple, July 20-25, 1997, hosted and arranged by means of Bob Johnston.
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Extra resources for Advances in Chemical Signals in Vertebrates
1. Introduction The goldfish mating system appears typical of many other non-territorial species in Family Cyprinidae. Spawning substrate (aquatic vegetation) and increased water temperature trigger a preovulatory surge of gonadotropin II (GtH II) in mid-photophase with ovulation occurring late in scotophase (Stacey, Cook & Peter, 1979). Ovulated females are sexually active and attractive to groups of males which compete for spawning access throughout a spawning period lasting several hours. , 1994a).
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.
However, there is evidence that a mixture of these two PGFs is important for biological function, for only when exposed to a mixture of both PGFs do males increase GtH II (Sorensen, Chamberlain & Stacey, 1989). 4. 3) and is best examined by directly comparing these attributes in related species. Here we discuss indirect evidence pertaining to the goldfish, as no studies have been conducted to directly assess such specialization. At present, we see little evidence for specialized pheromone production in goldfish, which in the preovulatory period release several dozen sex steroids, with AD, 17,20j3P, 17,20j3P-20S as relatively minor components of total steroid output (Sorensen & Scott, 1994).
Advances in Chemical Signals in Vertebrates by Dietland Müller-Schwarze (auth.), Robert E. Johnston, Dietland Müller-Schwarze, Peter W. Sorensen (eds.)