Factors affecting engorgement behavior in the salt marsh horse fly, Tabanus nigrovittatus Macquart (Diptera: Tabanidae)
Downer, K.E.; Nachman, R.J.; Stoffolano, J.G.
Journal of Insect Behavior 20(4): 403-412
Female Tabanus nigrovittatus were field collected and used in laboratory experimentation to explore physiological and behavioral factors that affect engorgement. Previous studies showed sulfakinins act as feeding satiety factors in insects. This study demonstrates that sulfakinins have differing effects on engorgement that is dependent on the feeding technique used in the laboratory. The satiety effect of sulfakinin on flies engorging using the blood-soaked Kimwipep feeding technique is not in agreement with previous experiments using an alternate feeding technique with artificial membranes. This study is the first to demonstrate that the temperature of blood is a significant factor for engorgement in this species. Also, the percentage of flies engorging is significantly different depending on the feeding technique used.