Figure 7
From: Two developmental switch points for the wing polymorphisms in the pea aphid Acyrthosiphon pisum
Comparison of flight-muscle breakdown between viviparous females (a, b) and males (c, d). Transverse planes of thoracic segments are shown. Left and right panels show whole and magnified images, respectively. Although the flight-muscles degenerated immediately before larviposition in viviparous females (b), no degeneration was observed in males even after mating (d). Arrowheads indicate degenerating muscles.