POWER and McCLEAVE: SIMULATION OF THE NORTH ATLANTIC DRIFT OF ANGUILLA 



leptocephali would simply have continued to spread, 

 with those moving west and north gradually entering 

 the Gulf Stream. This simulation result agreed with 

 the "moderate to rich" catches of 1-group European 

 eel leptocephali reported by Tesch et al. (1979) as 

 being present north of lat. 26°N and between Ber- 

 muda and Europe. Such gradual dispersal also 

 makes it not surprising that the European eel spends 

 3 yr as a leptocephalus before reaching Europe. 



In summary, the simulations have reproduced the 

 important features of the leptocephalus drift migra- 

 tion. Some of the features, such as the patch forma- 

 tion offshore of Florida, were previously un- 

 suspected, but seem highly plausible when con- 

 sidered in combination with the hydrographic data 

 and the leptocephalus collection data for that region. 

 This patch, and the remainder of the predicted lep- 

 tocephalus distribution, remains to be verified by in- 

 tensive and systematic sampling. 



ACKNOWLEDGMENTS 



We thank Robert C. Kleckner, John M. Ringo, 

 Bruce D. Sidell, Irving L. Kornfield, John R. Moring, 

 and the journal reviewers for their comments and 

 criticisms. Computer time was provided by Comput- 

 ing and Data Processing Services, University of 

 Maine. Funding for this research was provided by the 

 National Science Foundation (Grant OCE77- 19440) 

 and by the National Geographic Society. 



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