02149nas a2200181   4500008004100000245010500041210006900146260001300215300001200228490000700240520147900247100002601726700003101752700002701783700003001810700002901840856009801869       2011                        eng d00aPhthiraptera (Arthropoda, Insecta) in Gallus gallus from isolated and mixed backyard rearing systems0 aPhthiraptera Arthropoda Insecta in Gallus gallus from isolated a  cJan-2011  a17 - 210 v203 a<p>The objectives were to identify the species of chewing lice (Mallophaga) at different body sites in chickens (Gallus gallus), in isolated and mixed rearing systems, and to determine the dynamics and structure of the louse populations collected. The prevalences were 100 and 35% for chickens in the isolated and mixed systems, respectively. The species recorded were: Menopon gallinae, Menacanthus stramineus, Goniodes gigas, Goniocotes gallinae and Lipeurus caponis. The chickens in the isolated system presented more lice than did the ones in the mixed system. The most prevalent species were M. gallinae (30.58 and 62.31%) and L. caponis (29.12 and 14.49%), in the isolated and mixed systems, respectively. The preferential sites of parasitism were the dorsum, venter and wings among the chickens in the isolated system, while among the ones in the mixed system, the preferential sites were the dorsum and venter. The mean intensity of infestation in the isolated system was 111.4 for males and 19.1 for females, while in the mixed system it was 80 for males and 6.75 for females. The amplitudes of the infestation were 1-226 for males and 1-22 for females in the isolated system, while in the mixed system, the amplitudes were 1-111 and 1-8, respectively. It can be concluded that chickens reared in the isolated system harbor a greater number of lice than do chickens in the mixed system. However, the kind of rearing system does not prevent louse infestations.</p>
1 aSantos, Ana, Clara G.1 aRodrigues, Albério, Lopes1 aSantos, Sandra, B. Dos1 aLima, Roberto, César Ara1 aGuerra, Rita, de Maria S  uhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612011000100004&lng=en&tlng=en