Cardio-Respiratory Responses
of Fish to Hypoxia, Hypercarbia and Temperature
SYMPOSIUM PROCEEDINGS
Tadeu Rantin
Ana Kalinin
Don MacKinlay
International
Congress on the Biology of Fish
Tropical Hotel Resort,
Copyright © 2004
Physiology Section,
American Fisheries Society
All rights reserved
International Standard Book
Number(ISBN) 1-894337-53-0
Notice
This
publication is made up of a combination of extended abstracts and full papers,
submitted by the authors without peer review. The formatting has been edited
but the content is the responsibility of the authors. The papers in this volume
should not be cited as primary literature. The Physiology Section of the
American Fisheries Society offers this compilation of papers in the interests
of information exchange only, and makes no claim as to the validity of the
conclusions or recommendations presented in the papers.
For copies of these Symposium Proceedings, or the other 20 Proceedings in the Congress series, contact:
Don
MacKinlay, SEP DFO,
Website:
www.fishbiologycongress.org
PREFACE
The number and diversity of fish species is greater than in any other vertebrate class. Different species occupy a large variety of habitats that differ widely with respect to temperature, dissolved O2 and CO2, pH and other abiotic variables. Furthermore, these variables can fluctuate both seasonal and/or acutely. Since these variations can be unpredictable, fish must be able to sense the environmental changes, process theses information and trigger the appropriate compensatory responses to maintain their cardiovascular and respiratory homeostasis. Although the cardiorespiratory responses of fish to temperature, hypoxia and hypercarbia have been well studied in the last three decades, most of information arose from temperate species. There is a great variability in the descriptions of the mechanisms involved in cardio-respiratory responses to environmental changes. It is not clear to what extent this variability is correlated to habitat and mode of life in different species and, thus, to what extent it might represent selective adaptation. Thus, there is a growing concern about the compensatory mechanisms employed by tropical and neotropical fish, in which extent these mechanisms are common features for this vertebrate class, and if the variability of responses emerges from the phylogenetic backgraound.
This symposium, entitled Cardio-Respiratory Responses of Fish to Hypoxia, Hypercarbia and Temperature, intend not only to reexamine the current information and concepts, but also put together the most recent data, including information on tropical and neotropical species, focusing the mechanisms involved on the cardiovascular and respiratory control in fish and the consequences on the adaptation of these animals to their distinct environments.
Symposium Organizers:
Tadeu Rantin and Ana Kalinin,
Federal
Don MacKinlay, Fisheries and Oceans Canada
TABLE OF CONTENTS
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Complete Proceedings
A.L. Kalinin, F.T. Rantin, M.J. Costa.....................................................................
Costa, M.J.; Zanon, J.A.R.; Rantin, F.T.;
Tadeu Rantin..............................................................................................................
Tyson J. MacCormack...............................................................................................
Hamish Campbell, W. Davison, S. Egginton, L.
Sundin, E.W. Taylor and J. Turesson
Hemoglobin
Sickling in Boreal Fishes: An adaptation to the cold?
Hunt von Herbing, I. and Robert Cashon..............................................................
N. Joaquim..................................................................................................................
Leite, C.A.C., Florindo, L.H., Kalinin,
A.L., Milsom, W.K. & Rantin, F.