4.2 Abundance and density 45 



4.21 Average abundance 45 



*4.22 Changes in abundance 

 *4.23 Average density 

 *4.24 Changes in density 



4.3 Natality and recruitment 48 



4.31 Reproduction rates 48 



*4.32 Factors affecting reproduction 



4.33 Recruitment 48 



4.4 Mortality and morbidity 48 



*4.41 Mortality rates 



4.42 Factors causing or affecting mortality 48 



*4.43 Factors affecting morbidity 

 *4.44 Relation of morbidity to mortality rates 

 *4.5 Dynamics of population 



*4.6 The population in the community and the ecosystem 



5 Exploitation 48 



5.1 Fishing equipment 48 



5.11 Gears 48 



5.12 Boats 50 



5.2 Fishing areas 51 



5.21 General geographic distribution 51 



5.22 Geographic ranges 51 



5.23 Depth ranges 51 



*5.24 Conditions of the grounds 



5.3 Fishing seasons 52 



5.31 General pattern of seasons 52 



5.32 Dates of beginning, peak, and end of season 52 



5.33 Variation in date or duration of season 52 



5.4 Fishing operation and results 53 



5.41 Effort and intensity 53 



5.42 Selectivity 53 



5.43 Catches 54 



Literature cited • • • 57 



•No inlormation available. 



