Factors Affecting Engorgement Behavior in the Salt Marsh Horse Fly, <Emphasis Type="Italic">Tabanus nigrovittatus</Emphasis> Macquart (Diptera: Tabanidae) |
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Authors: | K E Downer R J Nachman Jr" target="_blank">J G StoffolanoJr |
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Institution: | (1) Department of Plant, Soil and Insect Sciences, Division of Entomology, University of Massachusetts, Amherst, MA 01003, USA;(2) Area Wide Pest Management Research, Southern Plains Agricultural Research Center, USDA, College Station, TX 77845, USA;(3) USDA-APHIS, 1398 W Truck Rd., Otis ANGB, MA 02545, USA |
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Abstract: | 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 Kimwipe® 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. |
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Keywords: | Sulfakinins temperature engorgement feeding techniques horse flies |
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