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Table 3.

Seasonal variations of mitochondrial densities in a standardized cell volume of 1 μm3 in body wall tissue of Arenicola marina; winter animals maintained at 1°C, winter animals acclimated at 10°C and summer animals maintained at 10°C

Mitochondria per mean cell volume (1 μm3)
Winter animalsAcclimated winter animalsSummer animals
68±7* 48±11 (12) 43±14 
48±6 (14) 47±15 (14) 44±12 (4) 
42±10 (18) 53±10 (18)  
48±9 (22) 50±14 (22)  
 55±14 (27)  
 44±15 (31)  
Mitochondria per mean cell volume (1 μm3)
Winter animalsAcclimated winter animalsSummer animals
68±7* 48±11 (12) 43±14 
48±6 (14) 47±15 (14) 44±12 (4) 
42±10 (18) 53±10 (18)  
48±9 (22) 50±14 (22)  
 55±14 (27)  
 44±15 (31)  

Data are means ± s.d.; N=7-27 cells from three different animals. Numbers in brackets indicate weeks of maintenance at habitat temperature or acclimation temperature (10°C).

*

Significantly different from all other values (P<0.027);Pearson correlation: P<0.001. ANOVA; Newman-Keuls test

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