Labropoulou et al : Habitat selection and diet of juvenile Pagrus pagrus 



501 



3.5 



3 

 2.5 



2 

 1.5 



1 

 0.5 







20-40m 



SPRINCi 

 40-60m 60-80m >80m 



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n 



1 



f-i^^^H 1 ^ 



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Size classes 



SUMMER 



3.5 



3 



~. 2.5 



+ 2 



Z 



M 1.5 



o 



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0.5 

 



20-40m 



n 



40-60m 



60-80m 



>80m 



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Size classes 

 WINTER 



3.5 



3 

 2.5 - 



2 

 1.5 



1 

 0.5 







20-40m 



40-60m 



60-80m 



>80m 



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Size classes 



Figure 3 



Seasonal distribution of the abundance of Pagrus pagrus size classes from the Cretan conti 

 nental shelf LoglA'+ll = the average logarithm of number of individuals per nmi-. 



and March, when U. tipica dominated (Fig. 6, A 

 and B). 



Relationship of length of predator to length of prey 



Significant positive correlations were found between 

 the size of red porgy and the mean size of prey con- 

 sumed (P<0.001, r-=0.85, n = 169). Furthermore, 

 analysis of variance on the mean prey sizes consumed 

 by the three size classes revealed significant differ- 



ences (F=93.7, P<0.001). The 0-year fish exploited 

 prey with smallest mean size (18 ±6.6 mm), 1-year 

 fish consumed prey 26.2 ±5.4 mm, and 2-year fish 

 fed on the largest prey (41.6 ±5.8 mm). 



Discussion 



Juvenile red porgy on the Cretan continental shelf 

 tend to occur in shallows (20-50 m), where the sub- 



