{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T06:16:01Z","timestamp":1773382561922,"version":"3.50.1"},"reference-count":60,"publisher":"Cambridge University Press (CUP)","issue":"5","license":[{"start":{"date-parts":[[2013,1,24]],"date-time":"2013-01-24T00:00:00Z","timestamp":1358985600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2013,4]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Within southern Africa, the widely distributed four-striped mouse genus (<jats:italic>Rhabdomys<\/jats:italic>) is parasitized by, amongst others, the specific ectoparasitic sucking louse,<jats:italic>Polyplax arvicanthis<\/jats:italic>. Given the presence of significant geographically structured genetic divergence in<jats:italic>Rhabdomys<\/jats:italic>, and the propensity of parasites to harbour cryptic diversity, the molecular systematics of<jats:italic>P. arvicanthis<\/jats:italic>was investigated. Representatives of<jats:italic>P. arvicanthis<\/jats:italic>were sampled from<jats:italic>Rhabdomys<\/jats:italic>at 16 localities throughout southern Africa. Parsimony and Bayesian gene trees were constructed for the mitochondrial COI, 12S rRNA, 16S rRNA and nuclear CAD genes. Our findings support the existence of 2 genetic groups within<jats:italic>P. arvicanthis<\/jats:italic>separated by at least 25% COI sequence divergence, which is comparable to that observed among recognized<jats:italic>Polyplax<\/jats:italic>species. We therefore propose that these 2 genetic lineages probably represent distinct species and that the apparent absence of clear morphological differences may point to cryptic speciation. The 2 taxa have sympatric distributions throughout most of the sampled host range and also occasionally occur sympatrically on the same host individual. The co-occurrence of these genetically distinct lineages probably resulted from parasite duplication via host-associated allopatric divergence and subsequent reciprocal range expansions of the 2 parasite taxa throughout southern Africa.<\/jats:p>","DOI":"10.1017\/s003118201200217x","type":"journal-article","created":{"date-parts":[[2013,1,24]],"date-time":"2013-01-24T12:46:22Z","timestamp":1359031582000},"page":"604-616","source":"Crossref","is-referenced-by-count":13,"title":["The sympatric occurrence of two genetically divergent lineages of sucking louse,<i>Polyplax arvicanthis<\/i>(Phthiraptera: Anoplura), on the four-striped mouse genus,<i>Rhabdomys<\/i>(Rodentia: Muridae)"],"prefix":"10.1017","volume":"140","author":[{"given":"NINA","family":"DU TOIT","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"SONJA","family":"MATTHEE","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"CONRAD A.","family":"MATTHEE","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2013,1,24]]},"reference":[{"key":"S003118201200217X_ref58","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-3113.2005.00323.x"},{"key":"S003118201200217X_ref57","doi-asserted-by":"publisher","DOI":"10.1017\/S1367943005001915"},{"key":"S003118201200217X_ref56","volume-title":"PAUP: Phylogenetic Analysis Using Parsimony (and Other Methods)","author":"Swofford","year":"2000"},{"key":"S003118201200217X_ref53","doi-asserted-by":"publisher","DOI":"10.1098\/rsbl.2011.0105"},{"key":"S003118201200217X_ref51","doi-asserted-by":"publisher","DOI":"10.1101\/gr.083188.108"},{"key":"S003118201200217X_ref49","doi-asserted-by":"publisher","DOI":"10.1093\/sysbio\/sys029"},{"key":"S003118201200217X_ref48","doi-asserted-by":"publisher","DOI":"10.2307\/2411436"},{"key":"S003118201200217X_ref47","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pbio.0020340"},{"key":"S003118201200217X_ref46","volume-title":"Tracer v1\u00b75","author":"Rambaut","year":"2007"},{"key":"S003118201200217X_ref44","volume-title":"Parasite Biodiversity","author":"Poulin","year":"2004"},{"key":"S003118201200217X_ref42","volume-title":"Collapse 1.2: Describing Haplotypes from Sequence Alignments","author":"Posada","year":"2004"},{"key":"S003118201200217X_ref41","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182011000679"},{"key":"S003118201200217X_ref40","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-7519(01)00199-0"},{"key":"S003118201200217X_ref39","volume-title":"The Simple Fool's Guide to PCR","author":"Palumbi","year":"1991"},{"key":"S003118201200217X_ref38","volume-title":"Tangled Trees: Phylogeny, Cospeciation, and Coevolution","author":"Page","year":"2003"},{"key":"S003118201200217X_ref35","doi-asserted-by":"publisher","DOI":"10.1017\/S003118201000168X"},{"key":"S003118201200217X_ref34","first-page":"1494","volume-title":"Mammal Species of the World. 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