11-31 



New Haven Harbor Station windowpane impingement levels were slightly 

 higher than at some of the Long Island Sound power plants (Millstone 

 [NUSCO, 1977], Shoreham [NYOSL, 1974]), but were about equal to those at 

 Norwalk. 



The ichthyoplankton collections in New Haven Harbor confirm 

 the observations of Moore (1947), Wheatland (1956), and Richards (1959) 

 that spawning occurs throughout the spring and early summer. The buoy- 

 ant eggs have been collected at densities ranging from 0.03 to 0.28 per 



3 

 m during May, the month of peak abundance. Peak larval densities 



ranging from 0.007 to 0.13 per m , have occurred in June. Data from 



other Long Island Sound power plants indicate similar densities of eggs 



and larvae. 



Cunnev (Tautogolabrus adspersus) 



i 

 Bigelow and Schroeder (1953) describe the cunner as a pre- 

 dominantly inshore, shallow-water, perch-like fish that is often found 

 congregating aro\ind wharves, wrecks, floats, and aquatic vegetation (eel 

 grass, seaweeds, etc.). Cunner feed on bivalves (particularly Mytilus 

 edulis) and other benthic organisms (011a, Bejda and Martin, 1975) . 

 They abound in sheltered settings such as those afforded by New Haven 

 Harbor. Younger, smaller individuals tend to be found farthest into the 

 deeper tidal creeks draining the salt marshes, and occasionally in rock 

 pools. 



Cunner are year-round residents and rarely stray far from 

 their place of birth. They remain active until the water temperature 

 drops below approximately 8°C, at which time they cease feeding and 

 become dormant (Dew, 1976; Green and Farwell, 1971) . The overwintering 

 period lasts 3 or 4 months and is typically spent beneath rocks or in 

 rock crevices; when disturbed from their repose, cunners tend to behave 

 as if dazed and disoriented (Dew, 1976) . 



