Biological Synopsis of Smallmouth Bass (Micropterus Dolomieu)
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Biological Synopsis of Smallmouth Bass (Micropterus dolomieu) T.G. Brown, B. Runciman, S. Pollard, A.D.A. Grant, and M.J. Bradford Fisheries and Oceans Canada Science Branch, Pacific Region Pacific Biological Station 3190 Hammond Bay Road Nanaimo, B.C. V9T 6N7 CANADA 2009 Canadian Manuscript Report of Fisheries and Aquatic Sciences 2887 Fisheries and Oceans Peches et Oceans +1 Canada Canada Canada Canadian Manuscript Report of Fisheries and Aquatic Sciences Manuscript reports contain scientific and technical information that contributes to existing knowledge but which deals with national or regional problems. Distribution is restricted to institutions or individuals located in particular regions of Canada. However, no restriction is placed on subject matter, and the series reflects the broad interests and policies ofthe Department ofFisheries and Oceans, namely, fisheries and aquatic sciences. Manuscript reports may be cited as full publications. 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Les numeros I a 900 de cette serie ont ete publies a titre de manuscrits (serle biologique) de I'Office de biologie du Canada, et apres Ie changement de la designation de cet organisme par decret du Parlement, en 1937, ont ete classes comme manuscrits (serie biologique) de l'Office des recherches sur les pecheries du Canada. Les numeros 901 a 1425 ont 1516 publies a titre de rapports manuscrits de l'Office des recherches sur les pecheries du Canada. Les numeros 1426 a 1550 sont parus a titre de rapports manuscrits du Service des peches et de la mer, minisrere des Peches et de I'Environnement. Le nom actuel de la serie a 6t6 etabli lors de la parution du numero 1551. Les rapports rnanuscrits sont produits a l'echelon regional, mais numerotes a l'echelon national. Les demandes de rapports seront satisfaites par l'etablissement auteur dont Ie nom figure sur la couverture et la page du titre. Les rapports epuises seront foumis contre retribution par des agents commerciaux. Canadian Manuscript Report of Fisheries and Aquatic Sciences 2887 2009 BIOLOGICAL SYNOPSIS OF SMALLMOUTH BASS (Micropterus dolomieu) by T. G. Brown, B. Runciman, S. Pollard, A. D. A. Grant, and M.J. Bradford Fisheries and Oceans Canada Science Branch, Pacific Region Pacific Biological Station 3190 Hammond Bay Road Nanaimo, B.C. V9T 6N7 CANADA ii © Her Majesty the Queen in Right of Canada, 2009 Cat. No. Fs 97-4/ 2887E ISSN 0706-6473 Correct citation for this publication: Brown, T.G., Runciman B., Pollard, S., Grant, A.D.A., and Bradford, M.J. 2009. Biological synopsis of smallmouth bass (Micropterus dolomieu). Can. Manuscr. Rep. Fish. Aquat. Sci. 2887: v + 50 p. iii TABLE OF CONTENTS ABSTRACT .....................................................................................................................V RESUME.........................................................................................................................V 1.0 INTRODUCTION...................................................................................................... 1 1.1 NAME, CLASSIFICATION AND IDENTIFIERS .................................................... 1 1.2 DESCRIPTION ..................................................................................................... 2 1.2.1 Taxonomy ...................................................................................................... 3 2.0 DISTRIBUTION........................................................................................................ 3 2.1 GLOBAL NATIVE DISTRIBUTION ....................................................................... 3 2.2 NATIVE DISTRIBUTION IN CANADA .................................................................. 4 2.3 NON-NATIVE DISTRIBUTION ............................................................................. 4 2.4 MODES OF INVASION ........................................................................................ 5 2.4.1 Authorized introductions................................................................................. 5 2.4.2 Live bait.......................................................................................................... 5 2.4.3 Illegal introductions ........................................................................................ 6 2.4.4 Natural dispersal ............................................................................................ 6 3.0 BIOLOGY AND NATURAL HISTORY ...................................................................... 6 3.1 AGE AND GROWTH ............................................................................................ 6 3.2 PHYSIOLOGICAL TOLERANCES ....................................................................... 8 3.2.1 Temperature .................................................................................................. 8 3.2.2 Water discharge, velocity and clarity............................................................ 10 3.2.3 pH ................................................................................................................ 11 3.2.4 Oxygen......................................................................................................... 11 3.3 REPRODUCTION............................................................................................... 11 3.3.1 Water conditions .......................................................................................... 12 3.3.2 Spawning behaviour..................................................................................... 13 3.3.3 Survival and predation ................................................................................. 13 3.4 FEEDING AND DIET.......................................................................................... 14 3.4.1 Juvenile diet ................................................................................................. 14 3.4.2 Adult diet ...................................................................................................... 15 3.5 HABITAT REQUIREMENTS............................................................................... 16 3.5.1 General habitat ............................................................................................ 16 3.5.2 Spawning habitat ......................................................................................... 17 3.6 INTERSPECIFIC INTERACTIONS..................................................................... 17 3.7 BEHAVIOUR AND MOVEMENTS...................................................................... 17 3.7.1 Spawning migrations.................................................................................... 17 3.7.2 Home range ................................................................................................. 18 iv 3.7.3 Diel movements and schooling .................................................................... 18 3.7.4 Swimming speed.......................................................................................... 19 3.7 DISEASES AND PARASITES ............................................................................ 19 3.7.1 Infection rates for introduced fish ................................................................. 20 3.7.2 Worms.......................................................................................................... 20 3.7.3 Viral hemorrhagic septicemia....................................................................... 21 4.0 USE BY HUMANS.................................................................................................. 21 4.1 RECREATIONAL FISHING ................................................................................ 21 4.2 COMMERCIAL FISHING...................................................................................