<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">P</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Contribuci</style></title><secondary-title><style face="normal" font="default" size="100%">Investigaciones de la Biosfera</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Occurrence; Phthiraptera; Spanish</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year></dates><volume><style face="normal" font="default" size="100%">1</style></volume><pages><style face="normal" font="default" size="100%">35-41</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Between 1985 and 1992, 304 falconiform birds of 2l species were surveyed for ectoparasites, mainly chewing lice (Insecta: Phthiraptera). The genera (and in most cases, the species) of the louse populations were determined, both qualitatively and quantitatively. The mean prevalence obtained reached almost 42%, the number of parasites ranging from 1 to 324 (mean value=30.1+44.1 lice/host parasitized). Data on seasonal prevalenee, intensity of parasitism, and location on the host are presented. The moult of birds was the only factor studied affecting significantly the prevalence and intensity of parasitism.</style></abstract><accession-num><style face="normal" font="default" size="100%">42932</style></accession-num><notes><style face="normal" font="default" size="100%">Journal</style></notes></record></records></xml>