{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,17]],"date-time":"2026-05-17T22:53:31Z","timestamp":1779058411965,"version":"3.51.4"},"reference-count":15,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2009,4,6]],"date-time":"2009-04-06T00:00:00Z","timestamp":1238976000000},"content-version":"unspecified","delay-in-days":12180,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[1975,12]]},"abstract":"<jats:p>When measured 56 days postinfection the length, wet weight and dry-weight of <jats:italic>Hymenolepis diminuta<\/jats:italic> were all found to decrease with increasing number of cysticercoids given up to 20. The mean position of the worms in 10, 12 and 20 worm infections is significantly posterior to that of 1, 2 and 5 worm infections and the worms are attached over a wider area of the intestine.<\/jats:p><jats:p>Egg production by the worms was followed up to day 56 postinfection; the number of eggs produced per worm and even per rat decreased with increasing population density. Thus the best way to get most eggs and to maintain the parasite in the laboratory is to have rats infected with only one tapeworm.<\/jats:p><jats:p>Rats given 1\u201320 cysticercoids showed a mean recovery of 100\u201365%, while rats given 40\u2013200 cysticercoids showed a mean recovery ranging from 13 to 2%. In addition to \u2018normal\u2019 worms, defined as worms &gt; 10 mm, small, most probably destrobilated, worms were found. In the 50 and 100 cysticercoid infections, worm recoveries were, respectively, 8% \u2018normal\u2019, 16% small, and 2% \u2018normal\u2019, 5% small. From the significantly lower recovery from heavy infections it is concluded that a deleterious factor is operating during the 8 weeks after the infection.<\/jats:p>","DOI":"10.1017\/s0031182000047272","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T16:57:35Z","timestamp":1244221055000},"page":"517-523","source":"Crossref","is-referenced-by-count":41,"title":["Some influences of population density on <i>Hymenolepis diminuta<\/i> in rats"],"prefix":"10.1017","volume":"71","author":[{"given":"Carl Aage","family":"Hesselberg","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J\u00f8rn","family":"Andreassen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2009,4,6]]},"reference":[{"key":"S0031182000047272_ref012","doi-asserted-by":"publisher","DOI":"10.2307\/3277301"},{"key":"S0031182000047272_ref011","doi-asserted-by":"publisher","DOI":"10.1016\/0014-4894(57)90024-3"},{"key":"S0031182000047272_ref009","volume-title":"Tissue Cultures in Biological Research","author":"Penso","year":"1963"},{"key":"S0031182000047272_ref006","doi-asserted-by":"publisher","DOI":"10.2307\/3275418"},{"key":"S0031182000047272_ref005","doi-asserted-by":"publisher","DOI":"10.2307\/3275291"},{"key":"S0031182000047272_ref004","first-page":"127","article-title":"Effects of dietary modifications of host rats on the tapeworm Hymenolepis diminuta","volume":"15","author":"Hager","year":"1941","journal-title":"Iowa State College Journal of Science"},{"key":"S0031182000047272_ref003","first-page":"105","article-title":"The effects of number and age of worms on development of primary and secondary infections with Hymenolepis diminuta in rats, and an investigation into the true nature of \u2018premunition\u2019 in tapeworm infections","volume":"29","author":"Chandler","year":"1939","journal-title":"American Journal of Hygiene"},{"key":"S0031182000047272_ref002","first-page":"39","article-title":"Studies of the helminth fauna of Norway. VII. Growth, fecundity, and fertility of Diphyllobothrium norvegicum (Cestoda) in the golden hamster","volume":"13","author":"Br\u00e5ten","year":"1966","journal-title":"Nytt Magasin for Zoologi"},{"key":"S0031182000047272_ref008","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000045479"},{"key":"S0031182000047272_ref007","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000078094"},{"key":"S0031182000047272_ref015","doi-asserted-by":"publisher","DOI":"10.2307\/3276873"},{"key":"S0031182000047272_ref014","doi-asserted-by":"publisher","DOI":"10.1016\/0014-4894(61)90040-6"},{"key":"S0031182000047272_ref013","doi-asserted-by":"publisher","DOI":"10.2307\/3277014"},{"key":"S0031182000047272_ref010","doi-asserted-by":"publisher","DOI":"10.2307\/3273449"},{"key":"S0031182000047272_ref001","doi-asserted-by":"publisher","DOI":"10.1016\/0014-4894(51)90005-7"}],"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182000047272","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,28]],"date-time":"2019-05-28T21:39:27Z","timestamp":1559079567000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182000047272\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1975,12]]},"references-count":15,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1975,12]]}},"alternative-id":["S0031182000047272"],"URL":"https:\/\/doi.org\/10.1017\/s0031182000047272","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[1975,12]]}}}