<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Stork,N. E.</style></author><author><style face="normal" font="default" size="100%">Christopher Henry Coutts Lyal</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Extinction or co-extinction rates</style></title><secondary-title><style face="normal" font="default" size="100%">Nature</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1993</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1993</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://phthiraptera.info/sites/phthiraptera.info/files/39415.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">366</style></volume><pages><style face="normal" font="default" size="100%">307</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><issue><style face="normal" font="default" size="100%">6453</style></issue><notes><style face="normal" font="default" size="100%">A short note pointing out that lice and possibly fleas may have a similar extinction rate to mamals due to their extreme host specificity, thus coextinction is a result of close coevolution. The extinction of the passenger pigeon and its louse fauna (Columbicola extinctus and Campanulotes defectus) is cited as an example.</style></notes></record></records></xml>