JAMIESON and CAMPBELL: SCALLOP FISHING IMPACT ON LOBSTERS 



both commercial fishing operations and in our study 

 are assumed to be similar. If 2.6% of the lobsters 

 observed are retained or injured, with 50% of these 

 lobsters killed, then the total number of lobsters 

 estimated to be destroyed by commercial scallop 

 fishing in 1980 was 22 lobsters. If each lobster weigh- 

 ed 0.5 kg and was valued at $6.60 kg"\ then the 

 loss would be about $73. In comparison, at $8.27 

 kg"^ of scallop meat in May, 1980 (Jamieson et al. 

 1981c), the scallop landings from these two fished 

 areas had an estimated value of $12,483. 



If lobster abundance was as high as that in the un- 

 fished area, i.a, 3.03 lobsters/1000 m^, then 139 

 lobsters, with a value of $460, would have been 

 destroyed. In both instances, this loss is negligible 

 in comparison to the values of the lobster and scallop 

 fisheries. These conclusions are in agreement with 

 the observations of Scarratt (1973) and Pringle and 

 Sharp (1980) in their assessments of the impact of 

 Irish moss raking on lobster populations. 



ACKNOWLEDGMENTS 



We thank M. Beattie, D. Duggan, S. Hamet, M. 

 Lundy, D. R. Maynard, and N. Witherspoon for 

 diving assistance; Captains E. Wedge and M. Ellis 

 of chartered vessels for their help and advice; D. J. 

 Scarratt and J. D. Pringle for their support and 

 manuscript review, and in particular, R. Chandler, 

 M. Etter, D. R. Maynard, and J. D. Pringle for coor- 

 dinating field studies and/or assistance in data 

 analyses. 



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