{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T23:47:16Z","timestamp":1777420036295,"version":"3.51.4"},"reference-count":14,"publisher":"Cambridge University Press (CUP)","issue":"6","license":[{"start":{"date-parts":[[2004,5,13]],"date-time":"2004-05-13T00:00:00Z","timestamp":1084406400000},"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":[[2004,6]]},"abstract":"<jats:p>Substrate preferences, spatial aggregation patterns and seasonal dynamics in the egg laying of ectoparasitic<jats:italic>Argulus coregoni<\/jats:italic>were studied at a commercial fish farm in Finland. Pilot experiments showed that<jats:italic>A. coregoni<\/jats:italic>females selected specific types of substrates for egg laying. Significantly more<jats:italic>A. coregoni<\/jats:italic>eggs were laid on dark substrates than on light ones suggesting the use of visual cues. Therefore, egg-laying plates of dark colour were constructed for further experiments. Most<jats:italic>A. coregoni<\/jats:italic>eggs were deposited in locations in shadow and in the deepest water in a 2 m deep farming canal. Relatively more eggs were laid on bottom stones situated near each egg-laying trap than on artificial egg-laying plates indicating a preference for irregular stones in the deeper locations in the canal. The plates were located 20 cm above the bottom. However, a total of 5863<jats:italic>A. coregoni<\/jats:italic>egg clutches, corresponding approximately to 1\u00b75 million unhatched metanauplii, were successfully destroyed with the plates indicating that egg-laying traps can be used as an ecological control method against argulids in certain situations. For traps to be effective, ponds should not contain stones or any other hard substrata attracting female lice. The egg laying of<jats:italic>A. coregoni<\/jats:italic>in this study started on 5 July in 2001 and extended over 3\u00b75 months up to mid-October. The egg-laying pattern of<jats:italic>A. coregoni<\/jats:italic>population was unimodal, supporting the view that only a single<jats:italic>A. coregoni<\/jats:italic>generation occurred annually in Central Finland.<\/jats:p>","DOI":"10.1017\/s0031182004004986","type":"journal-article","created":{"date-parts":[[2004,5,13]],"date-time":"2004-05-13T08:58:33Z","timestamp":1084438713000},"page":"655-660","source":"Crossref","is-referenced-by-count":28,"title":["Seasonal dynamics of egg laying and egg-laying strategy of the ectoparasite<i>Argulus coregoni<\/i>(Crustacea: Branchiura)"],"prefix":"10.1017","volume":"128","author":[{"given":"T.","family":"HAKALAHTI","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A. F.","family":"PASTERNAK","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. T.","family":"VALTONEN","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2004,5,13]]},"reference":[{"key":"S0031182004004986_ref006","doi-asserted-by":"crossref","unstructured":"HERTER, K. (1927).Reizphysiologische Untersuchungen an der Karpfenlaus (Argulus foliaceus L.).Zeitschrift f\u00fcr Vergleichende Physiologie 5, 283\u2013370.","DOI":"10.1007\/BF00338018"},{"key":"S0031182004004986_ref009","doi-asserted-by":"publisher","DOI":"10.3354\/dao046123"},{"key":"S0031182004004986_ref003","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000015869"},{"key":"S0031182004004986_ref002","unstructured":"BAUER, O. N. (1959).The ecology of parasites of freshwater fish. In Parasites of Freshwater Fish and the Biological Basis of their Control. Bulletin of the State Scientific Research Institute of Lake and River Fisheries, vol. XLIX, pp. 3\u2013207.Translated from Russian: Israel Program for Scientific Translations Jerusalem 1962."},{"key":"S0031182004004986_ref014","doi-asserted-by":"publisher","DOI":"10.1139\/f96-306"},{"key":"S0031182004004986_ref001","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7998.1989.tb02506.x"},{"key":"S0031182004004986_ref008","unstructured":"MIKHEEV, V. N. , VALTONEN, E. T. & RINTAM\u00c4KI-KINNUNEN, P. (1998).Host searching in Argulus foliaceus L. (Crustacea: Branchiura): the role of vision and selectivity.Parasitology 116, 425\u2013430."},{"key":"S0031182004004986_ref004","doi-asserted-by":"publisher","DOI":"10.1111\/j.1095-8649.2002.tb02400.x"},{"key":"S0031182004004986_ref012","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000050721"},{"key":"S0031182004004986_ref010","unstructured":"PASTERNAK, A. F. , MIKHEEV, V. N. & VALTONEN, E. T. (2000).Life history characteristics of Argulus foliaceus L. (Crustacea: Branchiura) populations in Central Finland.Annales Zoologici Fennici 37, 25\u201335."},{"key":"S0031182004004986_ref011","unstructured":"POULIN, R. (1988). Evolutionary Ecology of Parasites. From Individuals to Communities .Chapman and Hall,London."},{"key":"S0031182004004986_ref005","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182003003196"},{"key":"S0031182004004986_ref007","unstructured":"MEYER-ROCHOW, V. B. , AU, B. & KESKINEN, E. (2001).Photoreception in fish lice (Branchiura): The eyes of Argulus foliaceus Linn\u00e9, 1978 and A. coregoni Thorell, 1865.Acta Parasitologica 46, 321\u2013331."},{"key":"S0031182004004986_ref013","doi-asserted-by":"publisher","DOI":"10.3147\/jsfp.15.43"}],"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182004004986","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,4,28]],"date-time":"2023-04-28T16:53:55Z","timestamp":1682700835000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182004004986\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,5,13]]},"references-count":14,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2004,6]]}},"alternative-id":["S0031182004004986"],"URL":"https:\/\/doi.org\/10.1017\/s0031182004004986","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,5,13]]}}}