CONTENTS 



Page 



Introduction 1 



1 Identity 1 



1.1 Nomenclature 1 



1.2 Taxonomy 1 



1.3 Morphology 2 



2 Distribution 3 



2.1 Total area 3 



2.2 Differential distribution 5 



2.3 Determinants of distribution changes 5 



2.4 Hybridization 5 



3 Bionomics and life history 5 



3.1 Reproduction 5 



3.2 Preadult phase 7 



3.3 Adult phase 9 



3.4 Nutrition and growth 9 



3.5 Behavior 10 



4 Population 11 



4.1 Structure 1 : 



4.2 Abundance and density (of population) i; 



4.3 Natality and recruitment 1 ; 



4.4 Mortality and morbidity 1 : 



4.5 Dynamics of population (as a whole) i; 



4.6 The population in the community and the ecosystem 1 ; 



5 Fishery 13 



5.1 Fishing equipment 13 



5.2 Fishing areas 13 



5.3 Fishing seasons 13 



5.4 Fishing operations and results 13 



6 Protection and management 13 



6.1 Regulatory (legislative) measures 13 



6.2 Control or alteration of physical features of the environment 17 



6.3 Control or alteration of chemical features of the environment .... 17 



6.4 Control or alteration of the biological features of the environment. . 17 



6.5 Artificial stocking 17 



Literature cited 17 



