Ten insecticide formulations. including five ear tags containing pyrethroids, were tested against field populations of Tabanus abactor Philip. The most effective insecticide was the 1.0% pcrmethrin pour-on which caused greater than 55% mortality of exposed specimens through 2 weeks. The 10% permcthrin ear tag produced 79 and 55% mortality of T. abaclor 2 and 3 weeks after application, respectiv...

A horse-baited trap and a mobile insect sorting table were used to conduct an arthropod survey for potential vectors of Potomac Horse Fever in southern Maryland and northern Virginia. The trap and table worked effectively for the live collection and sorting of haemophagous Diptera such as: Simulium spp., Stomoxys calcitrans, Musca autumnalis, Tabanus spp. and Chrysops spp. during the diurnal co...

This paper documents the horse fly fauna collected in lowland rainforest in the southwesternmost part of French Guiana (Mitaraka). During this "Our Planet Revisited" survey nine tabanid species were recorded from French Guiana for the first time: Chrysops ecuadorensis Lutz, C. incisus Macquart, Catachlorops amazonicus Henriques & Gorayeb, Chlorotabanus flagellatus Krolow & Henriques, Cryptoylus...

Serotonin is an important neuromessenger used in a variety of signaling pathways throughout the animal kingdom. In insects, serotonin has been demonstrated to mediate feeding and feeding-related behaviors. In this study, serotonin antibody was localized in cells and processes throughout the central nervous system (CNS) and midgut of female horse fly Tabanus nigrovittatus Macquart. In the CNS, i...

The possible involvement of salivary gland extract (SGE) from horse flies in modifying hyperpolarization and relaxation via alterations in functional properties of sarcolemmal Na,K-ATPase in the host tissue was tested in vitro by application of various amounts of SGE from Hybomitra bimaculata.SGE in the amount of 3 µg proteins representing approximately the equivalent of one salivary gland of H...