{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T18:29:09Z","timestamp":1772908149655,"version":"3.50.1"},"reference-count":51,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[2011,4,18]],"date-time":"2011-04-18T00:00:00Z","timestamp":1303084800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2012,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>In this paper we report an investigation of the utility of coprological analysis as an alternative technique to study parasite specificity whenever host sampling is problematic; acanthocephalans from marine mammals were used as a model. A total of 252 scats from the South American sea lion, <jats:italic>Otaria flavescens<\/jats:italic>, and rectal faeces from 43 franciscanas, <jats:italic>Pontoporia blainvillei<\/jats:italic>, from Buenos Aires Province, were examined for acanthocephalans. Specimens of two species, i.e. <jats:italic>Corynosoma australe<\/jats:italic> and <jats:italic>C. cetaceum<\/jats:italic>, were collected from both host species. In sea lions, 78 out of 145 (37.9%) females of <jats:italic>C. australe<\/jats:italic> were gravid and the sex ratio was strongly female-biased. However, none of the 168 females of <jats:italic>C. cetaceum<\/jats:italic> collected was gravid and the sex ratio was not female-biased. Conversely, in franciscanas, 14 out of 17 (82.4%) females of <jats:italic>C. cetaceum<\/jats:italic> were gravid, but none of 139 females of <jats:italic>C. australe<\/jats:italic> was, and the sex ratio of <jats:italic>C. cetaceum<\/jats:italic>, but not that of <jats:italic>C. australe<\/jats:italic>, was female-biased. In putative non-hosts, the size of worms was similar to that from specimens collected from prey. Results suggest that both acanthocephalans contact sea lions and franciscanas regularly. However, <jats:italic>C. australe<\/jats:italic> and <jats:italic>C. cetaceum<\/jats:italic> cannot apparently reproduce, nor even grow, in franciscanas and sea lions, respectively. Coprological analysis may represent a useful supplementary method to investigate parasite specificity, particularly when host carcasses are difficult to obtain.<\/jats:p>","DOI":"10.1017\/s0022149x11000149","type":"journal-article","created":{"date-parts":[[2011,4,18]],"date-time":"2011-04-18T10:14:36Z","timestamp":1303121676000},"page":"156-164","source":"Crossref","is-referenced-by-count":26,"title":["Assessing host\u2013parasite specificity through coprological analysis: a case study with species of <i>Corynosoma<\/i> (Acanthocephala: Polymorphidae) from marine mammals"],"prefix":"10.1017","volume":"86","author":[{"given":"F.J.","family":"Aznar","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Hern\u00e1ndez-Orts","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.A.","family":"Su\u00e1rez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Garc\u00eda-Varela","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.A.","family":"Raga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.L.","family":"Cappozzo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2011,4,18]]},"reference":[{"key":"S0022149X11000149_ref2","doi-asserted-by":"publisher","DOI":"10.1139\/z94-094"},{"key":"S0022149X11000149_ref36","first-page":"89","volume-title":"Bases para la conservaci\u00f3n y el manejo de la costa uruguaya","author":"Morgades","year":"2006"},{"key":"S0022149X11000149_ref42","unstructured":"Reiczigel J. & R\u00f3zsa L. 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