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Fig. 5 | BMC Evolutionary Biology

Fig. 5

From: Rival seminal fluid induces enhanced sperm motility in a polyandrous ant

Fig. 5

Effects of the different compartments of A. echinatior queen reproductive tract on sperm motility. (a) Fluid sampled from the final sperm storage organ of queens (spermatheca) activated a higher proportion of spermatozoa than the bursa copulatrix pre-storage organ (F1,105 = 25.90, P < 0.0001) and these effects were proportional to (b) higher sperm velocity in spermathecal fluid as expressed by PC1 (F1,105 = 5.71, P = 0.0187). However, linearity in sperm motility (c) was equally enhanced in spermathecal and bursa copulatrix fluids (F1,105 = 0.01, P = 0.93). Bars show mean ± SE and levels not connected by the same letter were significantly different in post-hoc Student’s t tests

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