In article ,
enigma wrote:


i have a 62 acre farm, which i try to keep as organic as
possible... although i really need an organic chicken lice
remedy that works...
lee

Perhaps of interest?

Bill

J Econ Entomol. 2008 Apr;101(2):637-46.
Links

Temperature and humidity effects on off-host survival of the Northern
fowl mite (Acari: Macronyssidae) and the chicken body louse
(Phthiraptera: Menoponidae).
Chen BL, Mullens BA.
Department of Entomology, University of California, Riverside, CA 92521,
USA.

Off-host survival of the northern fowl mite, Ornithonyssus sylviarum
(Canestrini & Fanzago) (Acari: Macronyssidae), and the chicken body
louse, Menacanthus stramineus (Nitzsch) (Phthiraptera: Menoponidae), was
studied at 12 combinations of temperature (15, 21, 27, and 33 degrees C)
and humidity (31, 65, and 85% RH). Mite protonymphs and louse third
instars survived longer on average than the respective adult stages.
Higher temperatures significantly reduced survival of adult and immature
stages of both ectoparasites, whereas relative humidity had significant
effects on O. sylviarum (especially protonymphs) but not M. stramineus.
The LT50 values for adult northern fowl mites ranged from 1.9 (at 33
degrees C, 31%RH) to 8.3 d (at 15 degrees C, 85%RH), LT50 values for
mite protonymphs ranged from 2.0 (at 33 degrees C, 31%RH) to 18.1 d (at
15 degrees C, 85%RH), LT50 values for adult lice ranged from 0.5 (at 33
degrees C, 31%RH) to 1.7 d (at 15 degrees C, 65%RH), and LT50 values for
nymphal lice ranged from 1.2 (at 33 degrees C, 65%RH) to 3.3 d (at 21
degrees C, 31%RH). Maximum survival of the northern fowl mite was up to
35 d for adults and 29 d for protonymphs. Maximum survival for the
chicken body louse was 3.3 d for adults and 5.8 d for nymphs. The data
provide minimum guidelines for leaving poultry houses vacant long enough
to allow ectoparasites to die before introduction of subsequent new
flocks.
PMID: 18459434 [PubMed - in process

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