Source, optimal dose concentration and longevity of trail pheromone in two Monomorium ants (Formicidae: Hymenoptera)
Workers of Monomorium lepineyi and Monomorium bicolor secrete trail pheromones from their venom glands. The Dufour’s gland and the hind gut secretions have no effect on the trail pheromone activity in M. lepineyi, while in M. bicolor the secretions have an inhibitory effect. The optimal dose of the trail- following in each of the mentioned two species was found to be 1.0 and 0.1 poison gland equivalent/30 cm trail, respectively. Although the concentration of the optimal dose in the two species is different, the longevity of each is nearly the same as the pheromone lasts 120 min.
This study describes for the first time the necrophagous Diptera attracted to rabbit carcasses in three distinct
habitats in Riyadh, Kingdom of Saudi Arabia (KSA). A mean number of 1,427…
Because they may demonstrate characteristics of the environment where a body has been laying prior to the
discovery, flies are insects of forensic interest. We investigated the fly abundance…
Objective: This study was designed to characterize the DNA polymorphisms of the melanocortin-1 receptor (MC1R) gene in indigenous Saudi Arabian sheep breeds exhibiting different color coats,…