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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Oviposition traits generate extrinsic postzygotic isolation between two pine sawfly species

Fig. 4

N. pinetum and N. lecontei females differed in their egg-laying pattern. a On average, N. pinetum females laid fewer eggs per needle than N. lecontei females. b On average, N. pinetum females spaced eggs farther apart than N. lecontei females. c Across all egg-bearing needles (EBN), N. pinetum females cut preslits less often than N. lecontei females. All comparisons were significant at P < 0.05. d Representative oviposition pattern of N. lecontei females: many, closely spaced eggs per needle. e Representative oviposition pattern of N. pinetum females: few, widely spaced eggs per needle. f A preslit (indicated by an arrow) cut by a N. lecontei female on a P. banksiana seedling (photos by R.K. Bagley)

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