S. Turillazzi, PROTECTION OF BROOD BY MEANS OF DUFOURS GLAND SECRETION IN 2 SPECIES OF STENOGASTRINE WASPS, Ethology, ecology and evolution, (3), 1994, pp. 37-41
Two preliminary experiments on Parischnogaster jacobsoni and Liostenog
aster flavolineata tested the hypothesis that the secretion from Dufou
r's gland helps protect the immature brood, both when used to cover th
e eggs and as an ant guard. An indirect protective function of the sec
retion for eggs has been demonstrated in the second species, while whe
n used as an ant guard the secretion of the first species efficiently
repelled ants tested with a double choice device.