Palp-Splaying Behavior and a Specific Mouthpart Site Associated with Active Water Vapor Uptake in Amblyomma americanum (Acari: Ixodidae)
Authors: Sigal, Marvin D.; Yoder, Jay A.; Needham, Glen R.
Source: Journal of Medical Entomology, Volume 36, Number 3, May 1999 , pp. 365-369(5)
Publisher: Entomological Society of America
Abstract:Ticks actively absorb water vapor from unsaturated air via their mouthparts. A wax technique was used to cover select areas of the mouthparts of the lone star tick, Amblyomma americanum (L.), to examine whether a specific site is involved in uptake. Covering dorsal, ventral, and distal regions failed to inhibit uptake, whereas wax applied to the proximal region, specifically the hypostome-cheliceral junction, blocked water absorption. A novel occurrence of a palp-splaying behavior was observed during hydrating conditions (93% RH), while ticks were motionless, compared with those held at desiccating conditions (63% RH), which were more active and the palps were not splayed.
Document Type: Research Article
Publication date: 1999-05-01
- Journal of Medical Entomology is published bimonthly in January, March, May, July, September, and November. The journal publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance. The journal is divided into the following sections: Morphology, Systematics, Evolution; Sampling, Distribution, Dispersal; Development, Life History; Population and Community Ecology; Behavior, Chemical Ecology; Population Biology/Genetics; Molecular Biology/Genomics; Neurobiology, Physiology, Biochemistry; Vector Control, Pest Management, Resistance, Repellents; Arthropod/Host Interaction, Immunity; Vector/Pathogen/Host Interaction, Transmission; Vector-Borne Diseases, Surveillance, Prevention; Direct Injury, Myiasis, Forensics; Modeling/GIS, Risk Assessment, Economic Impact. In addition to full-length research articles, the journal publishes interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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