PARSONS and TUCKER: FECUNDITY OF NORTHERN SHRIMP 



•T. MARYS BAY. 1974 



ST. MARYS BAY. 1971 



CARTVRXSHT CHANNEL. 1979- 



-CARTWRIBMT CHANNEL. I 902 



01 



i » 



3 



CHANNEL. 1992 



FORTUNE BAY. 1979- 



FORTUNE BAY. I 979 



Carapace length (mm) 



Figure 4.— Comparisons of northern shrimp fecundity be- 

 tween years from five different areas, based on predicted 

 values from equations in Table 1. 



Carapace length (mm) 



Based on the comparison of samples taken in 1982, 

 it was shown that the fecunity-length relationships 

 in three areas off Labrador were similar. Similar- 

 ity was not apparent in 1978 samples which showed 

 that fecundity in the Cartwright Channel was lower 

 than in the Hopedale Channel. This discrepancy in 

 results from Labrador is due to annual differences 

 demonstrated for both channels in 1978 and 1982 

 samples. 



The comparison by area for the 1978 data also 

 implied similarity between the Baffin Island and 

 Hopedale Channel samples. However, the size 

 ranges compared were not the same. Female shrimp 



ranged in size from 23.7 to 34.5 for the Baffin Island 

 sample in contrast to 21.7 to 29.0 for the Hopedale 

 Channel sample. These differences in size likely 

 reflect separate rates of growth and maturity in the 

 two areas. Therefore, from a biological viewpoint, 

 all three areas sampled in 1978 exhibited different 

 fecundity-length relationships. 



The differences between areas, described above, 

 can be considered in relation to the temperatures 

 present in these areas. The bottom temperature at 

 the sampling station off the southwest coast of New- 

 foundland was 6.2°C, the warmest of all areas 

 sampled (Table 1). The temperature recorded in 



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