{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T23:38:06Z","timestamp":1791157086406,"version":"4.1.0"},"reference-count":0,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2000,11,9]],"date-time":"2000-11-09T00:00:00Z","timestamp":973728000000},"content-version":"unspecified","delay-in-days":39,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2000,10]]},"abstract":"<jats:p>The sex ratio of adult worms has been observed biased towards males in <jats:italic>Schistosoma mansoni<\/jats:italic> under natural conditions. \nThe origin of this bias is unknown. This paper determines whether males are more infective than females under controlled \nexperimental bisexual conditions, and hence if the sex ratio is male-biased as a consequence of this. The male and female \ncercarial infectivities in uni- and bisexual vertebrate host infections using a range of controlled cercarial sex ratios were \nstudied. The results showed that, in experimental unisexual infections, male cercariae were more infective than females, \nand that in experimental bisexual infections, male cercarial infectivity was similar to that of female, irrespective of cercarial \nsex ratio. Furthermore, cumulative male and female cercarial infectivity was maximal when sex ratio was equilibrated. The \nunbiased sex ratios obtained in our experimental bisexual infections are discussed in terms of behavioural and\/or \nbiochemical male\u2013female interaction. Alternative explanations of the natural biased sex ratio are proposed.<\/jats:p>","DOI":"10.1017\/s0031182099006393","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T09:30:22Z","timestamp":1027762222000},"page":"379-383","source":"Crossref","is-referenced-by-count":46,"title":["Experimental observations on the sex ratio of adult \n<i>Schistosoma mansoni<\/i>, with comments on the \nnatural male bias"],"prefix":"10.1017","volume":"121","author":[{"given":"J.","family":"BOISSIER","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.","family":"MON\u00c9","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2000,11,9]]},"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182099006393","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,8]],"date-time":"2019-05-08T16:15:41Z","timestamp":1557332141000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182099006393\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2000,10]]},"references-count":0,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2000,10]]}},"alternative-id":["S0031182099006393"],"URL":"https:\/\/doi.org\/10.1017\/s0031182099006393","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[2000,10]]}}}