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Table 1.

Effect of head and thorax removal on induction and termination of cryptobiosis in larvae of P. vanderplanki

NLarvae recovered (%)Time for recovery (h)
Intact 25 25 (100) 0.5±0a 
—Head 20 19 (95) 5.6±1.5b 
—Head and thorax 4 (50) 6.7±2.2b 
NLarvae recovered (%)Time for recovery (h)
Intact 25 25 (100) 0.5±0a 
—Head 20 19 (95) 5.6±1.5b 
—Head and thorax 4 (50) 6.7±2.2b 

The intact or treated larvae were completely dried over 3 days after incubation in water for 1 day. They were judged as surviving when they could move their body after rehydration.

Values are means±S.D.

The larvae that turned black (having presumably died before complete dehydration) were eliminated from the data.

a,b

The different letters indicate a significant difference between values(Mann—Whitney U test; P<0.05).

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