142 



Fishery Bulletin 97(1), 1999 



35'N 



A July 1, 1993 



35'N 



30'N 



25'N 



20'N 



15-N 



10'N 







30"N 



25'N 



20"N 



15'N 



U 0.5-1 

 O >1 



165"E 170'E 175'E 180" 175"W 170'W 165"W 160'W 155'W 150'W 145'W 



10'N 



35"N 



30'N 



25'N 



20"N 



15'N 



B July 1, 1994 



% of total 

 • > - 0.05 



35"N 



30'N 



25-N 



20"N 



15'N 



0.05 - 0.25 

 I o 0.25-0.5 

 IO'nI O 0.5-1 



O >i 



165'E 170"E 175'E 180' 175'W 170'W 165"W 160'W 155"W 150'W 145'W 



Figure 8 



Simulated spatial distribution of 5000 lar\ au .^65 days after release at Necker on i Ai 

 1 July 1993, iB) 1 July 1994, and (Cll July 1995, with an eddy diffusion rate of 500 

 m-/sec. Solid circles denote Oahu. Maro, and Midway Islands, and the star marks 

 Necker Island. 



10"N 



port important to the spatial disti'ibution of larvae 

 lLipciu.s et al., in press). 



However, it is important to remember that larval 

 abundance is necessai-y but not always sufficient for 

 good recruitment and that other factors, such as habi- 

 tat and predators, may also be important. Further, work 

 to improve the input parameter,? and to validate these 

 simulation results is certainly needed. For example, 

 the results are certainly sensitive to the lar-val depth 

 distribution as a function of larval age. Because these 

 simulations pioduce near-real time spatial distribu- 



tions, larval surveys could be designed to sample lar- 

 vae in areas where the simulations show high and low 

 lai'val densities in order to evaluate the model results. 

 The model results can also be evaluated by comparing 

 bank-specific recruitment index time series against 

 estimated recruitment to the fi.shery three years later. 

 Further, genetic studies based on DNA analyses may 

 be more sensitive than the earlier electrophoi'etic stud- 

 ies in testing the apparent lack of mixing between re- 

 gions of the archipelago suggested by these simulations. 

 Given the hypothesis that ti'ansport was generally from 



