Table 1. Annual sea scallop ■landings in the Quoddy Region, Washington County, and State of Maine, 

 19't8-57; catch refers to scallop meats 



LIFE HISTORY 

 Range and Distribution 



The range of the sea scallop is from 

 New Jersey to Labrador. It is espe- 

 cially abundant along the Maine coast 

 and on Georges Bank in depths of 10 

 to 100 fathoms. 



Spawning 



In Maine waters, the adult scallop 

 spawns between late August and early 

 October, with the peak occurring in 

 September. As with many other bivalve 

 species, fertilization takes place in 

 the water. 



Larval and Juvenile Development 



Baird (1953) has described the young, 

 approximately 1 mm. and larger, that 

 were found in many inshore areas of 

 Maine. These scallops were fixed to 

 bryozoans which, in turn, were attached 

 to the shells of scallops, both alive and 

 dead, or to shells of other mollusks. 

 Attachment of the scallops appears to 

 last fronn postpelagic settlement to 

 well into the second growing season. 

 Young scallops 4 to 9 mm. long have 



been frequently observed attached by 

 the byssus to shells (fig. 2). Scallops 

 larger than 9 nnm. are seldom fastened 

 by their by s sal threads. 



f 



Figure 2. --Approximately the smallest (4.5 mm.) and the 

 largest (9.6 mm.) juvenile scallops found attached by 

 byssus to adult scallops (Baird, 1953). 



