Fig. 4. Restructuring of glycerophospholipid composition in thoracic muscle membranes of Pyrrhocoris apterus during field acclimatization between 23 October and 27 December. (A) Mean (± s.d.; N=6 independent samples) relative proportion of phosphatidylethanolamine (GPEtn) and phosphatidylcholine (GPChol) molecule (all species make 100% in total) in October. (B) The difference from the initial state at the end of the acclimatization period. The differences were statistically analyzed using unpaired two-tailed t-tests (*P<0.05; **P<0.001; ***P<0.0001).