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- Title
Effect of food deprivation on response of the mite,Dermanyssus gallinae, to heat.
- Authors
Kilpinen, O.; Mullens, B. A.
- Abstract
Freshly blood-fed adult females of the chicken miteDermanyssus gallinaeDeGeer (Acari: Dermanysidae) were food-deprived during 1, 2–3, 8–10, 14–16 and 22–23 days. These mites were tested in groups of 10 to determine their sensitivity to a heat cue delivered for a 60 s period under controlled laboratory conditions (24°C, simulated dark conditions of 2 lx). Immobile mites were videotaped and start of activation (for individual mites) and percentage of mites activated in the 60 s period were related to temperature changes. Mites were activated with temperature gradients as low as 0.003–0.005°C/s. Mites that had fed the previous day had a significantly lower activation (20%) than other groups. Activation was highest at 2–3 days (60%) and 8–10 days (75%) post-feeding. Activation declined significantly to 45% at 14–16 days and to 30% at 22–23 days post-feeding. Activation patterns probably reflect mite physiological condition and declining responsiveness to heat cues concomitant with starvation and higher risks associated with activation in the prolonged absence of a host.
- Subjects
CHICKEN-mite; TICKS as carriers of disease; ARACHNIDA as carriers of disease; LARVAE; MITES; INSECT pests
- Publication
Medical & Veterinary Entomology, 2004, Vol 18, Issue 4, p368
- ISSN
0269-283X
- Publication type
Article
- DOI
10.1111/j.0269-283X.2004.00522.x