<?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%">Melanie Ruiz</style></author><author><style face="normal" font="default" size="100%">Rodrigo Alonso</style></author><author><style face="normal" font="default" size="100%">Malena Rospide</style></author><author><style face="normal" font="default" size="100%">Diana Belén Acosta</style></author><author><style face="normal" font="default" size="100%">Regino Cavia</style></author><author><style face="normal" font="default" size="100%">Juliana P. Sanchez</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Diversity and eco‐epidemiology of ectoparasites and &lt;i&gt;Rickettsia&lt;/i&gt; spp. associated with the opossums &lt;i&gt;Didelphis albiventris&lt;/i&gt; Lund in livestock farms from Argentinian Pampas region</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">ectoparasite-borne pathogens</style></keyword><keyword><style  face="normal" font="default" size="100%">intensive livestock</style></keyword><keyword><style  face="normal" font="default" size="100%">Opossum</style></keyword><keyword><style  face="normal" font="default" size="100%">zoonosis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2025</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Feb-17-2025</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://resjournals.onlinelibrary.wiley.com/doi/10.1111/mve.12796?af=R</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&lt;jats p=&quot;&quot;&gt;Many ectoparasite species serve as vectors for bacteria that are significant to both public and animal health, with wild, domestic and synanthropic mammals acting as reservoirs. However, limited information exists on the circulation and incidence of these vectors in Argentina. We examined the diversity, prevalence and abundance of ectoparasites, along with the presence of &lt;jats italic=&quot;&quot;&gt;Rickettsia&lt;/jats&gt; spp., of &lt;jats italic=&quot;&quot;&gt;Didelphis albiventris&lt;/jats&gt; Lund (Didelphimorphia, Didelphidae) within a rural landscape of the Pampas region, Argentina. We also analysed variations in ectoparasite populations concerning seasonality, livestock farm type and farmers&amp;#39; management practices. Seven species of hematophagous ectoparasites were collected, including mites (Mesostigmata, Laelapidae: &lt;jats italic=&quot;&quot;&gt;Laelaps echidninus&lt;/jats&gt; Berlese); ticks (Ixodida, Ixodidae: &lt;jats italic=&quot;&quot;&gt;Ixodes loricatus&lt;/jats&gt; Neumann); fleas (Siphonaptera, Rhopalopsyllidae: &lt;jats italic=&quot;&quot;&gt;Polygenis platensis&lt;/jats&gt; Jordan and Rothschild and &lt;jats italic=&quot;&quot;&gt;Polygenis rimatus&lt;/jats&gt; Jordan); Stephanocircidae: &lt;jats italic=&quot;&quot;&gt;Craneopsylla minerva wolffhuegeli&lt;/jats&gt; (Rothschild, Pulicidae: &lt;jats italic=&quot;&quot;&gt;Ctenocephalides felis&lt;/jats&gt; Bouch&amp;eacute;); and lice (Phthiraptera, Polyplacidae: &lt;jats italic=&quot;&quot;&gt;Polyplax spinulosa&lt;/jats&gt; Burmeister). Additionally, two bacteria were detected: &lt;jats italic=&quot;&quot;&gt;Rickettsia felis&lt;/jats&gt; Bouyer et al. (Rickettsiales, Rickettsiaceae) and &lt;jats italic=&quot;&quot;&gt;Rickettsia&lt;/jats&gt; sp. (Rickettsiales, Rickettsiaceae) were closely related to &lt;jats italic=&quot;&quot;&gt;Rickettsia bellii&lt;/jats&gt; Philip et al. (Rickettsiales, Rickettsiaceae). Fleas were the most prevalent and abundant group, with &lt;jats italic=&quot;&quot;&gt;C.&amp;thinsp;felis&lt;/jats&gt; showing the highest values of mean abundance and prevalence. Parasitological comparisons between dairy farms and feedlots revealed similar results, with comparable densities of &lt;jats italic=&quot;&quot;&gt;D.&amp;thinsp;albiventris&lt;/jats&gt; in both farm types. Ectoparasite abundance varied seasonally, peaking during the colder season. Regression analysis indicated higher ectoparasite infestation levels on farms with more dogs. The detection of pathogenic bacteria, coupled with the high prevalence and abundance of vectors, such as &lt;jats italic=&quot;&quot;&gt;C.&amp;thinsp;felis&lt;/jats&gt;, suggests a significant epidemiological risk in the region. The commensal behaviour of &lt;jats italic=&quot;&quot;&gt;D.&amp;thinsp;albiventris&lt;/jats&gt; facilitates it to thrive in areas modified by anthropogenic activity, positioning this species as a potential nexus between wild and domestic epidemiological cycles of parasites and emerging pathogens. Therefore, our findings suggest that &lt;jats italic=&quot;&quot;&gt;D.&amp;thinsp;albiventris&lt;/jats&gt; plays a key role in the transmission and maintenance of ectoparasites and ectoparasite‐borne bacteria within these ecosystems.&lt;/jats&gt;&lt;/p&gt;
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