Pheromones have also been shown to play an important role in inter-sex behaviours in the Gryllidae family. \cite{TREGENZA_1997} was the first major study to prove the existence of cuticular pheromones in the Gryllus, by displaying the recognition of female pheromones on a live cricket and subsequent courting behaviour, and following alcohol wash of the female, a lack of courtship behaviour. This research was further expanded upon in \cite{Nagamoto_2005}, which explored the role of antennae and maxillary palpi in pheromone identification and subsequent behaviours, as well as emphasising the role age plays in pheromone secretion (Younger female crickets secreted a greater concentration of pheromones and elicited increased frequency of courtship behaviour in males).
From these previous studies, we predicted that the frequency agonistic displays would increase between sex-segregated male crickets, regardless of size difference under the presence of female scents.