11-112 



TABLE n-6. SUBLETHAL EFFECTS OF DELIBERATE PROLONGED EXPOSURE TO 

 THERMAL PLUME CONDITIONS. (FROM de SYLVA, 1969 AND 

 KINNE, 1970). NEW HAVEN HARBOR ECOLOGICAL STUDIES 

 SUMMARY REPORT, 1979. 



1. Increased metabolism (e.g. respiration, heart beat, enzymatic 



activity, feeding and other body functions) 



2. Increased sensitivity to other physiological stress (in winter 



e.g. cold shock) 



3. Neurological responses (dulling of reaction to stimuli, dis- 



orientation, etc.) 



4. Shortening of duration of early life stages (e.g. early meta- 



morphosis) 



5. Out-of -phase reproduction and development 



6. Morphometric changes (e.g. smaller body size at comparable growth 



stage) 



7. Decreased growth rate and body mass 



8. Inactivation of thermally labile enzymes and processes dependent 



thereon (e.g. those which control melanism — the lightening 

 and darkening of body pigments) 



9. Increased incidence of disease/parasitism 



