{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T14:15:56Z","timestamp":1792246556902,"version":"4.4.0"},"reference-count":44,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2009,1,21]],"date-time":"2009-01-21T00:00:00Z","timestamp":1232496000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2009,3]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>We analysed population dynamics of the louse<jats:italic>Antarctophthirus microchir<\/jats:italic>in pups of the South American sea lion,<jats:italic>Otaria flavescens<\/jats:italic>, at the Punta Le\u00f3n rookery (Argentina) over a period of 2 years. A total of 136 pups were aged and marked at the beginning of the lactation period ashore, then sampled for lice at different times within 30 days. Sampling was restricted to the chest and belly, two sites where lice were especially abundant. This concentration on ventral areas might protect lice from thermal stress in the austral summer. Infestation patterns in pups \u2a7d3 days old suggested that the potential for transmission increased from first nymphs to adults. Population trends of each instar with pup age, based on standardised values of abundance, were conserved between years, reflecting the basic dynamics of recruitment and reproduction. However, trends based on log-transformed abundances varied significantly between years; apparently, environmental conditions affected growth of lice populations differently each year. Stage-based deterministic models for population growth of<jats:italic>A. microchir<\/jats:italic>suggested generation times from 18 to 23 days. Accordingly, only 2 lice generations might be produced before pups start going to the sea. Shortening the cycle to accommodate a third generation might be risky, whereas a 2-generation cycle might at least result in larger females producing higher numbers of viable offspring.<\/jats:p>","DOI":"10.1017\/s0031182008005441","type":"journal-article","created":{"date-parts":[[2009,1,21]],"date-time":"2009-01-21T09:03:26Z","timestamp":1232528606000},"page":"293-303","source":"Crossref","is-referenced-by-count":22,"title":["Population dynamics of<i>Antarctophthirus microchir<\/i>(Anoplura: Echinophthiriidae) in pups from South American sea lion,<i>Otaria flavescens<\/i>, in Northern Patagonia"],"prefix":"10.1017","volume":"136","author":[{"given":"F. J.","family":"AZNAR","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. S.","family":"LEONARDI","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B.","family":"BER\u00d3N VERA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D. G.","family":"VALES","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"AMEGHINO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J. A.","family":"RAGA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E. A.","family":"CRESPO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2009,1,21]]},"reference":[{"key":"S0031182008005441_ref038","unstructured":"Reiczigel J. and R\u00f3zsa L. (2005). Quantitative Parasitology 3.0. Budapest. http:\/\/www.behav.org\/qp\/qp.htm."},{"key":"S0031182008005441_ref015","first-page":"641","article-title":"The hog louse, Haematopinus suis Linn\u00e9; its biology, anatomy and histology","volume":"51","author":"Florence","year":"1921","journal-title":"Cornell University, Agricultural Experimental Station Memoir"},{"key":"S0031182008005441_ref009","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000024525"},{"key":"S0031182008005441_ref045","first-page":"121","article-title":"Preference for covered nest sites and breeding success in Kelp Gulls Larus dominicanus","volume":"23","author":"Yorio","year":"1995","journal-title":"Marine Ornithology"},{"key":"S0031182008005441_ref008","volume-title":"Practical Nonparametric Statistics","author":"Conover","year":"1999"},{"key":"S0031182008005441_ref014","first-page":"1","article-title":"The sucking lice","volume":"1","author":"Ferris","year":"1951","journal-title":"Memoirs of the Pacific Coast Entomological Society"},{"key":"S0031182008005441_ref007","doi-asserted-by":"publisher","DOI":"10.1080\/01621459.1988.10478639"},{"key":"S0031182008005441_ref025","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-002-0630-7"},{"key":"S0031182008005441_ref044","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182098003072"},{"key":"S0031182008005441_ref010","doi-asserted-by":"publisher","DOI":"10.1139\/f04-105"},{"key":"S0031182008005441_ref031","first-page":"79","volume-title":"Marine Insects","author":"Murray","year":"1976"},{"key":"S0031182008005441_ref021","first-page":"504","article-title":"Ecology and morphological adaptation of the sucking lice (Anoplura, Echinophthiriidae) on the Northern fur seal","volume":"169","author":"Kim","year":"1975","journal-title":"Rapports et Proc\u00e8s Verbaux des R\u00e9unions du Conseil Permanent International pour l\u2032Exploration de la Mer"},{"key":"S0031182008005441_ref034","doi-asserted-by":"publisher","DOI":"10.1071\/ZO9650437"},{"key":"S0031182008005441_ref040","doi-asserted-by":"publisher","DOI":"10.1214\/088342304000000756"},{"key":"S0031182008005441_ref005","first-page":"1143","volume-title":"Encyclopedia of Marine Mammals","author":"Cappozzo","year":"2002"},{"key":"S0031182008005441_ref028","doi-asserted-by":"publisher","DOI":"10.1071\/ZO9630173"},{"key":"S0031182008005441_ref024","doi-asserted-by":"crossref","DOI":"10.1007\/b98858","volume-title":"Local Regression and Likelihood","author":"Loader","year":"1999"},{"key":"S0031182008005441_ref032","doi-asserted-by":"publisher","DOI":"10.1016\/0020-7519(87)90040-3"},{"key":"S0031182008005441_ref027","doi-asserted-by":"publisher","DOI":"10.1071\/ZO9610001"},{"key":"S0031182008005441_ref006","first-page":"275","article-title":"The life history and habits of the buffalo louse, Haematopinus tuberculatus (Burmeister) Lucas","volume":"31","author":"Chaudhuri","year":"1961","journal-title":"Indian Journal of Veterinary Science and Animal Husbandry"},{"key":"S0031182008005441_ref004","doi-asserted-by":"publisher","DOI":"10.1163\/156853988X00539"},{"key":"S0031182008005441_ref017","doi-asserted-by":"publisher","DOI":"10.1046\/j.1420-9101.1999.00117.x"},{"key":"S0031182008005441_ref018","doi-asserted-by":"publisher","DOI":"10.1016\/S0261-3794(99)00028-1"},{"key":"S0031182008005441_ref043","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-4632.2005.02418.x"},{"key":"S0031182008005441_ref023","doi-asserted-by":"publisher","DOI":"10.3354\/dao01823"},{"key":"S0031182008005441_ref033","doi-asserted-by":"publisher","DOI":"10.1071\/ZO9690179"},{"key":"S0031182008005441_ref002","doi-asserted-by":"publisher","DOI":"10.2307\/3284227"},{"key":"S0031182008005441_ref039","doi-asserted-by":"publisher","DOI":"10.1645\/0022-3395(2000)086[0228:QPISOH]2.0.CO;2"},{"key":"S0031182008005441_ref001","first-page":"32","article-title":"A new method for non-parametric multivariate analysis of variance","volume":"26","author":"Anderson","year":"2001","journal-title":"Austral Ecology"},{"key":"S0031182008005441_ref003","first-page":"201","article-title":"The breeding cycle of the southern sea lion, Otaria byronia","volume":"1","author":"Campagna","year":"1985","journal-title":"Marine Mammal Science"},{"key":"S0031182008005441_ref011","doi-asserted-by":"publisher","DOI":"10.1198\/016214505000000033"},{"key":"S0031182008005441_ref012","doi-asserted-by":"publisher","DOI":"10.1086\/281737"},{"key":"S0031182008005441_ref013","first-page":"471","article-title":"Contributions towards a monograph of sucking lice. Part VII","volume":"2","author":"Ferris","year":"1934","journal-title":"Stanford University Publications University Series, Biological Sciences"},{"key":"S0031182008005441_ref019","doi-asserted-by":"publisher","DOI":"10.1093\/aesa\/64.1.280"},{"key":"S0031182008005441_ref022","first-page":"224","volume-title":"Immature Insects","author":"Kim","year":"1987"},{"key":"S0031182008005441_ref029","first-page":"241","volume-title":"Antarctic Biology","author":"Murray","year":"1964"},{"key":"S0031182008005441_ref030","first-page":"185","article-title":"Ectoparasites of Antarctic seals and birds","volume":"1","author":"Murray","year":"1967","journal-title":"Proceedings of the Symposium on Pacific-Antartic Sciences, Japanese Antarctic Research Expeditions, Jare Scientific Reports. Special Issue"},{"key":"S0031182008005441_ref035","doi-asserted-by":"publisher","DOI":"10.1071\/ZO9650761"},{"key":"S0031182008005441_ref026","doi-asserted-by":"publisher","DOI":"10.1038\/182404b0"},{"key":"S0031182008005441_ref036","volume-title":"Chewing and Sucking Lice as Parasites of Mammals and Birds","author":"Price","year":"1997"},{"key":"S0031182008005441_ref037","doi-asserted-by":"publisher","DOI":"10.1002\/sim.1320"},{"key":"S0031182008005441_ref041","doi-asserted-by":"publisher","DOI":"10.1071\/AR9500465"},{"key":"S0031182008005441_ref042","volume-title":"The Evolution of Life Histories","author":"Stearns","year":"1992"},{"key":"S0031182008005441_ref020","first-page":"2027","article-title":"Louse populations of the Northern fur seal (Callorhinus ursinus)","volume":"33","author":"Kim","year":"1972","journal-title":"The American Journal of Veterinary Research"}],"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182008005441","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,5,23]],"date-time":"2023-05-23T17:40:57Z","timestamp":1684863657000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182008005441\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,1,21]]},"references-count":44,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2009,3]]}},"alternative-id":["S0031182008005441"],"URL":"https:\/\/doi.org\/10.1017\/s0031182008005441","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,1,21]]}}}