NUMBER 40 * 2 9 



FIGURE 23. Model demonstrating regional temperature control of monthly growth in thickness and reproductive maturation in C. compac- 

 tuin, using the yearly temperature curve of Figure 22 (see text for complete description). (A) Regional temperature at 12-17 m depth for coastal 

 waters (the Gulf of Maine from Gulf of Maine Ocean Observing System buoys, mean of Penobscot and eastern shelf buoys, 2 and 20 m, 20 1 1 

 data, -1.0°C for samples from 1960s) and southern Labrador and NE Newfoundland summer data from 1964 and 2003-201 1 cruises of the 

 RA^ Alca ;, with winter estimated as -1.5°C when sea ice was present (from U.S. Navy Hydrographic Office Sailing Directions). (B) Expected 

 regional monthly growth rates derived from the curves in A and Figure 22, summed for yearly means. The expected time of conceptacle develop- 

 ment based on 100-i.nTi perithallial growth to reach expansion phase and 1 month for expansion and 1 month to maturity. Dashed horizontal 

 lines are conceptacle development time. Clathromorphwn nerenstratiim curves are added for comparison, but conceptacle development is not 

 shown (see text). 



