Newman et al.: Variability in the population structure of Lutjanus adetu and L quinquelineatus 



327 



a" 

 u 



.5 



3 5 

 3 



2 5 

 2 



I 5 

 1 



1)5 



1(1 15 2(1 25 3D 



Lodestonc 



y = 3.408-0. 153 x 



r2 



0.711 



(ages 4-22 years only) 



15 20 25 30 



Kelso 



l) 5 10 15 2(1 25 3(1 



Age (years) 



Figure 7 



Catch curves, based on observed ages, for L. quinquelineatus among reefs. 



this method was not expected to reduce variability 

 among age classes in the present study. 



However, the mortality rates of L. quinquelineatus 

 at Lodestone Reef were not significantly different 

 between successive years (Fig. 8). This result sug- 

 gests that the variable mortality rates and hence 

 survivorship of these species among reefs may be 



relatively consistent through time. Similarly, Doherty 

 and Fowler ( 1994a) suggested that mortality sched- 

 ules were consistent (not constant) across space and 

 time for two damselfish species from the positive cor- 

 relations that were present between spatial and tem- 

 poral variation in recruitment and subsequent abun- 

 dance. Therefore, the observed differences in mor- 



