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In temperate Argentina, the members of the <jats:italic>Culex pipiens<\/jats:italic> complex include <jats:italic>Cx. pipiens molestus<\/jats:italic>, <jats:italic>Cx. quinquefasciatus<\/jats:italic> and their hybrids. To characterize their blood feeding patterns, adult resting mosquitoes were collected monthly during the warm season in urban and rural equestrian fields. The availability of birds and domestic mammals per site was characterized. The blood source and the complex member were successfully identified for 89 specimens using PCR. Blood of 19 vertebrate species was isolated including four mammals (most common feeds from dog, <jats:italic>Canus lupus<\/jats:italic> 19% of the blood meals; and horse, <jats:italic>Equus caballus<\/jats:italic> 18%) and 15 birds (picazuro pigeon, <jats:italic>Patagioenas picazuro<\/jats:italic> 11%; eared dove, <jats:italic>Zenaida auriculata<\/jats:italic> 10%; chicken, <jats:italic>Gallus gallus<\/jats:italic> 9%). The Forage Ratio (FR), calculated as the proportion of feeds taken from a given host species with respect to that host availability in the environment, suggested preference for dog by all members of the complex (FR \u22654.5). On the contrary, FR values suggested avoidance for horse by <jats:italic>Cx. quinquefasciatus<\/jats:italic> and the hybrid (FR \u22640.8), and a use proportional to its abundance by <jats:italic>Cx. pipiens molestus<\/jats:italic> (FR\u00a0=\u00a01.1\u20131.2 in urban and rural sites, respectively). FR values suggesting preference were obtained for avian species of the orders Passeriformes (7 species in total) and Columbiformes (5) by all members of the complex (FR \u2265\u20093.3), whereas values for monk parakeet (<jats:italic>Myiopsitta monachus<\/jats:italic>, Psiitaciformes) suggested avoidance by <jats:italic>Cx. quinquefasciatus<\/jats:italic> in urban sites (FR\u00a0=\u00a00.4) and by <jats:italic>Cx. pipiens molestus<\/jats:italic> in rural sites (FR\u00a0=\u00a00.3) but not in urban sites (FR\u00a0=\u00a01.4). A mammal\u2010bird index (MBI, from \u22121 all avian to +1 all mammalian blood meals) was calculated for each member of the complex and urbanization category. Values were negative for <jats:italic>Cx. quinquefasciatus<\/jats:italic> (MBI<jats:sub>urban<\/jats:sub>\u00a0=\u2009\u22120.60, MBI<jats:sub>rural<\/jats:sub>\u00a0=\u2009\u22120.33) and positive for <jats:italic>Cx. pipiens molestus<\/jats:italic> (MBI<jats:sub>urban<\/jats:sub>\u00a0=\u20090.20, MBI<jats:sub>rural<\/jats:sub>\u00a0=\u20090.60), indicating a higher proportion of feeds taken on birds and mammals, respectively, regardless of the urbanization category. In temperate Argentina, the members of the <jats:italic>Cx. pipiens<\/jats:italic> complex fed both on horses and on birds, thus representing a real risk of transmission of arboviral encephalitides from avian enzootic cycles to horse epizootics.<\/jats:p>","DOI":"10.1111\/zph.13021","type":"journal-article","created":{"date-parts":[[2022,12,28]],"date-time":"2022-12-28T06:22:06Z","timestamp":1672208526000},"page":"256-268","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Blood feeding patterns of the <i>Culex pipiens<\/i> complex in equestrian land uses and their implications for arboviral encephalitis risk in temperate Argentina"],"prefix":"10.1111","volume":"70","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9779-2208","authenticated-orcid":false,"given":"Mar\u00eda Victoria","family":"Cardo","sequence":"first","affiliation":[{"name":"Ecolog\u00eda de Enfermedades Transmitidas por Vectores (2eTV) Instituto de Investigaci\u00f3n e Ingenier\u00eda Ambiental\u2010IIIA, UNSAM\u2010CONICET  San Mart\u00edn Provincia de Buenos Aires Argentina"},{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET)  Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"An\u00edbal Eduardo","family":"Carbajo","sequence":"additional","affiliation":[{"name":"Ecolog\u00eda de Enfermedades Transmitidas por Vectores (2eTV) Instituto de Investigaci\u00f3n e Ingenier\u00eda Ambiental\u2010IIIA, UNSAM\u2010CONICET  San Mart\u00edn Provincia de Buenos Aires Argentina"},{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET)  Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Constanza","family":"Mozzoni","sequence":"additional","affiliation":[{"name":"Fundaci\u00f3n Rewilding  Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8552-7503","authenticated-orcid":false,"given":"Marlene","family":"Kliger","sequence":"additional","affiliation":[{"name":"Ecolog\u00eda de Enfermedades Transmitidas por Vectores (2eTV) Instituto de Investigaci\u00f3n e Ingenier\u00eda Ambiental\u2010IIIA, UNSAM\u2010CONICET  San Mart\u00edn Provincia de Buenos Aires Argentina"},{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET)  Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dar\u00edo","family":"Vezzani","sequence":"additional","affiliation":[{"name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas (CONICET)  Buenos Aires Argentina"},{"name":"Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable, Facultad de Ciencias Exactas, UNCPBA\u2010CICPBA  Tandil Provincia de Buenos Aires Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,12,27]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00705-020-04929-4"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1590\/S0034-89101995000200004"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1590\/S0074-02761995000400007"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.vetmic.2013.08.013"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1863-2378.2008.01207.x"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.4269\/ajtmh.2006.75.2.0750251"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1186\/1756-3305-5-39"},{"issue":"4","key":"e_1_2_10_9_1","first-page":"356","article-title":"Study on the flying height of Aedes caspius and Culex pipiens females in the Po Delta area, Italy","volume":"13","author":"Bellini R.","year":"1997","journal-title":"Journal of the American Mosquito Control Association"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1093\/trstmh\/traa058"},{"key":"e_1_2_10_11_1","unstructured":"BIV \u2013 Bolet\u00edn Integrado de Vigilancia. 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