نتایج جستجو برای: head louse
تعداد نتایج: 169100 فیلتر نتایج به سال:
The salmon louse (Lepeophtheirus salmonis (Krøyer, 1837)) is a parasitic copepod that can, if untreated, cause considerable damage to Atlantic salmon (Salmo salar Linnaeus, 1758) and incurs significant costs to the Atlantic salmon mariculture industry. Salmon lice are gonochoristic and normally show sex ratios close to 1:1. While this observation suggests that sex determination in salmon lice i...
there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...
Thomomydoecus minor is an ectoparasitic chewing louse that lives in intimate association with the pocket gopher Thomomys bottae. Chewing lice are wingless, obligate, host specific parasites that spend their entire life cycle on the fur of their host. Pocket gophers are fossorial and asocial, cut off for most of their lives even from members of their own species. Thus, the life histories of both...
BACKGROUND Pediculus capitis (Anoplura: Pediculidae) or head louse is an obligate ectoparasite transmitted mainly through physical contact. This study was conducted to survey the prevalence of head lice infestation rate and some risk factors in Primary School pupils, in Khajeh City East Azerbaijan Province, Iran METHODS We selected 20 primary schools of Khajeh City during 2008 and 2009. Total...
conclusions the overall infestation rate in the present study is probably one of the lowest infestation rates in iran and in the region. it appears necessary to examine pupils by trained persons for early detection of infestation. results according to the obtained results, pediculosis spp. prevalence was 2% among male and female students of khorramshahr primary schools; it was 2.6% in females a...
Background and Objective: Head louse (Pediculus humanus capitis) is one of the most important parasites in humans and applying permethrin is the standard method for its control. Continuous application of this chemical increases the probability of permethrin resistance and gradually the addition of alternative substances is necessary. The aim of this study was evaluation of the efficacy of eucal...
Seventy-three nyalas (Tragelaphus angasii) in the Umfolozi, Mkuzi and Ndumu Game Reserves in northeastern KwaZulu-Natal were examined for arthropod parasites during 1983 and 1984. In addition, six animals were examined during 1994. Ten ixodid tick species, two louse species and a louse fly species were recovered. The nyalas were good hosts of all stages of development of Boophilus decoloratus, ...
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