Titlebook: Respiration and metabolism of embryonic vertebrates; Satellite Symposium Roger S. Seymour Book 1984 Dr W. Junk Publishers, Dordrecht 1984

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Factors controlling the rate of incubation water loss in bird eggs,state of hydration at the end of incubation, presumably needed for optimal hatching success, an egg must lose a total amount of H.O equal to 18% of its initial mass, given an overall O. uptake of 102 ml · g. (Hoyt and Rahn, 1980). Field observations show that on average 15% of initial egg mass is lo

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Regulation of oxygen affinity of embryonic blood during hypoxic incubation,oglobin, from high to low ATP levels, is initiated at an earlier stage, so that hypoxic embryos of 9 days of incubation have an O. affinity comparable to that of 14 day old normal embryos. The striking increase of the O. affinity of hypoxic blood is best correl­ated to the fall of the ATP concentration and a significant increase of red cell pH.

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Book 1984s to present the comparative physiology of gas exchange, water balance and energet­ ics of developing vertebrate embryos. contributions were invited from leading research workers in an attempt to represent the forefront of investigation of all vertebrate classes and to promote a broadly comparative

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Adult and embryonic metabolism in birds and the role of shell conductance,tabolic rate at pre-IP appears to be precisely matched in each species to shell conductance so that similar air cell O.. and CO., tensions are found across a wide spectrum of embryonic size and incubation period. These values are ca. 100 and 40 torr for . , and . , respec­tively, at the pre-IP stage of development.

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meeting was to present the comparative physiology of gas exchange, water balance and energet­ ics of developing vertebrate embryos. contributions were invited from leading research workers in an attempt to represent the forefront of investigation of all vertebrate classes and to promote a broadly co

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Functional morphology of gills in larval amphibians, flows. In . gills blood flows through exchange sites comprising a double sheet of capillary space where the mathematics of sheet flow probably apply..In both species, the gills are regarded as being important sites of aquatic gas exchange..Branchial shunts linking afferent and efferent branchial arteries are present in both species.