{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T10:56:15Z","timestamp":1781520975430,"version":"3.54.1"},"reference-count":35,"publisher":"FapUNIFESP (SciELO)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001665","name":"French National Research Agency","doi-asserted-by":"crossref","award":["ANR-2010 CESA 018 01"],"award-info":[{"award-number":["ANR-2010 CESA 018 01"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100001665","name":"French National Research Agency","doi-asserted-by":"crossref","award":["EBS-LAC n\u00ba A90281"],"award-info":[{"award-number":["EBS-LAC n\u00ba A90281"]}],"id":[{"id":"10.13039\/501100001665","id-type":"DOI","asserted-by":"crossref"}]},{"name":"UNICEF\/UNDP\/World Bank\/WHO Special Programmer for Research and Training in Tropical Diseases (TDR)\/International Development Research Centre","award":["ANR-2010 CESA 018 01"],"award-info":[{"award-number":["ANR-2010 CESA 018 01"]}]},{"name":"UNICEF\/UNDP\/World Bank\/WHO Special Programmer for Research and Training in Tropical Diseases (TDR)\/International Development Research Centre","award":["EBS-LAC n\u00ba A90281"],"award-info":[{"award-number":["EBS-LAC n\u00ba A90281"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Mem. Inst. Oswaldo Cruz"],"abstract":"<jats:p>BACKGROUND Persistent reinfestation of Triatoma infestans in the Gran Chaco undermines Chagas disease (CD) control. While insecticide resistance is a known factor, the fine-scale social and demographic structure of vector colonies remains poorly understood.  OBJECTIVES To analyse the micro-geographic genetic structure, mating systems, and demographic history of T. infestans in a rural community in the Bolivian Chaco.  METHODS We genotyped 381 individuals from three neighbouring structures (domiciliary and peridomestic) using eight highly polymorphic microsatellite loci (expected heterozygosity, HE = 0.675). Genealogical relationships were reconstructed using maximum likelihood (ML) analysis (COLONY), and demographic history was inferred through heterozygosity tests.  FINDINGS The infestation comprised 42 distinct full-sibling families nested within a single colony. We observed a stark dichotomy: two dominant families (&gt; 80 individuals) exhibited monogamy and signs of distinct demographic histories (one in expansion, one recovering from a bottleneck), while 40 minor families showed high promiscuity (polygyny\/polyandry). Finite growth rates varied significantly (\u03bb = 1.03 vs 1.22), evidencing active intra-colonial competition.  MAIN CONCLUSIONS Domestic populations are not random aggregates, but complex mosaics of coexisting lineages with different adaptive strategies. The dominance of monogamous families suggests a priority effect advantage, while the \"tail\" of promiscuous minor families represents a cryptic reservoir. Effective control must account for this structural resilience, as surviving minor lineages could rapidly recolonise the niche.<\/jats:p>","DOI":"10.1590\/0074-02760250355","type":"journal-article","created":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T10:36:23Z","timestamp":1781519783000},"source":"Crossref","is-referenced-by-count":0,"title":["Coexistence of monogamy and polygyny in Triatoma infestans: fine-scale genealogical structure reveals complex social structures within domestic colonies in the Bolivian Chaco"],"prefix":"10.1590","volume":"121","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-6335-1385","authenticated-orcid":false,"given":"Alex Juan","family":"Cornejo Pinto","sequence":"first","affiliation":[{"name":"Pan American Health Organisation\/World Health Organization,  Bolivia; Universidad Mayor de San Andr\u00e9s,  Bolivia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rolando","family":"S\u00e1nchez","sequence":"additional","affiliation":[{"name":"Universidad Mayor de San Andr\u00e9s,  Bolivia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fr\u00e9d\u00e9ric","family":"Lardeux","sequence":"additional","affiliation":[{"name":"Institut de Recherche pour le D\u00e9veloppement,  France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2026]]},"reference":[{"issue":"6","key":"ref1","first-page":"33","article-title":"Chagas disease in Latin America: an epidemiological update based on 2010 estimates","volume":"90","year":"2015","journal-title":"Wkly Epidemiol Rec"},{"key":"ref2","first-page":"123","article-title":"Revision of the Triatominae (Hemiptera, Reduviidae), and their significance as vectors of Chagas' disease","volume":"163","author":"Lent H","year":"1979","journal-title":"Bull Am Mus Nat Hist"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"e210015","DOI":"10.1590\/0074-02760210015","article-title":"Do the new triatomine species pose new challenges or strategies for monitoring Chagas disease? 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The importance of walking females","volume":"106","author":"Abrahan LB","year":"2011","journal-title":"Mem Inst Oswaldo Cruz"},{"issue":"4","key":"ref34","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1603\/0022-2585-41.4.614","article-title":"Active dispersal of Natural Populations of Triatoma infestans (Hemiptera: Reduviidae) in Rural Northwestern Argentina","volume":"41","author":"Vazquez-Prokopec GM","year":"2004","journal-title":"J Med Entomol"},{"issue":"1","key":"ref35","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/j.pt.2004.10.007","article-title":"Can wild Triatoma infestans foci in Bolivia jeopardize Chagas disease control efforts?","volume":"21","author":"Noireau F","year":"2005","journal-title":"Trends Parasitol"}],"container-title":["Mem\u00f3rias do Instituto Oswaldo Cruz"],"original-title":[],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S0074-02762026000105039&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T10:36:29Z","timestamp":1781519789000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S0074-02762026000105039&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":35,"alternative-id":["S0074-02762026000105039"],"URL":"https:\/\/doi.org\/10.1590\/0074-02760250355","relation":{},"ISSN":["1678-8060","0074-0276"],"issn-type":[{"value":"1678-8060","type":"electronic"},{"value":"0074-0276","type":"print"}],"subject":[],"published":{"date-parts":[[2026]]},"article-number":"e250355"}}