{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T18:21:04Z","timestamp":1793298064934,"version":"4.5.0"},"reference-count":20,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2009,4,6]],"date-time":"2009-04-06T00:00:00Z","timestamp":1238976000000},"content-version":"unspecified","delay-in-days":7735,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[1988,2]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>We examined dynamical factors that shape the distribution of the number of parasites\/host in constant or temporally varying environments, and with or without host-age dependent variation in host susceptibility and parasite mortality. We predict properties of the parasite distribution in the absence of density-dependent factors such as densitydependent mortality or recruitment and parasite-induced host mortality. These properties provide a criterion for the detection of density dependence in temporally variable systems with host-age dependent interactions. We have then introduced methods to estimate and statistically evaluate the effects of host age or size on the distribution of parasites\/host. The methods are based on a maximum likelihood protocol for linear and non-linear regression when data are negatively binomially distributed. We have illustrated the use of the theoretical results and statistical methods by re-analysing the data of Halvorsen &amp; Andersen (1984) on cestode infections in Norwegian arctic charr and by analysing new data on nematode infections in Caribbean <jats:italic>Anolis<\/jats:italic> lizards.<\/jats:p>","DOI":"10.1017\/s0031182000081762","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T12:11:33Z","timestamp":1244203893000},"page":"197-210","source":"Crossref","is-referenced-by-count":134,"title":["The relation between the number of parasites\/host and host age: population dynamic causes and maximum likelihood estimation"],"prefix":"10.1017","volume":"96","author":[{"given":"S. W.","family":"Pacala","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. P.","family":"Dobson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2009,4,6]]},"reference":[{"key":"S0031182000081762_ref020","volume-title":"Mathematical Ecology","author":"Pielou","year":"1977"},{"key":"S0031182000081762_ref019","doi-asserted-by":"publisher","DOI":"10.2307\/1941313"},{"key":"S0031182000081762_ref018","doi-asserted-by":"publisher","DOI":"10.1038\/280455a0"},{"key":"S0031182000081762_ref016","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000051805"},{"key":"S0031182000081762_ref015","doi-asserted-by":"publisher","DOI":"10.1007\/BF01989295"},{"key":"S0031182000081762_ref014","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000001244"},{"key":"S0031182000081762_ref013","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095-8649.1984.tb04878.x"},{"key":"S0031182000081762_ref012","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000051647"},{"key":"S0031182000081762_ref011","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000057401"},{"key":"S0031182000081762_ref002","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000047739"},{"key":"S0031182000081762_ref009","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000079890"},{"key":"S0031182000081762_ref005","doi-asserted-by":"publisher","DOI":"10.2307\/3933"},{"key":"S0031182000081762_ref017","doi-asserted-by":"publisher","DOI":"10.2307\/3934"},{"key":"S0031182000081762_ref010","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-68635-1_6"},{"key":"S0031182000081762_ref003","first-page":"204","volume-title":"Modern Parasitology","author":"Anderson","year":"1982"},{"key":"S0031182000081762_ref001","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000063587"},{"key":"S0031182000081762_ref004","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000055347"},{"key":"S0031182000081762_ref006","doi-asserted-by":"publisher","DOI":"10.1038\/280361a0"},{"key":"S0031182000081762_ref007","first-page":"1","volume-title":"Advances in Parasitology","volume":"24","author":"Anderson","year":"1985"},{"key":"S0031182000081762_ref008","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000071420"}],"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182000081762","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,20]],"date-time":"2019-05-20T16:26:15Z","timestamp":1558369575000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182000081762\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1988,2]]},"references-count":20,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1988,2]]}},"alternative-id":["S0031182000081762"],"URL":"https:\/\/doi.org\/10.1017\/s0031182000081762","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[1988,2]]}}}