information as to the kind of spawning cycle the populations undergo. For 

 example, are one or two modes of eggs spawned or is a mode of eggs matured and 

 gradually released? If the specimens were reproductively inactive this 

 information would be of interest and perhaps indicate the populations were 

 transitory and migrated into the area after spawning elsewhere. Other 

 factors, such as the possible existence of inadequate nutrition to permit 

 spawning in the study areas and the possibility of environmental pollution 

 inhibiting reproduction, need examining. These are questions that can only be 

 answered by additional collections, especially of spring specimens. 



