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Growth and emigration of third-stage larvae of hysterothylacium aduncum (nematoda: anisakidae) in larval herring clupea harengus

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Growth and emigration of third-stage larvae of hysterothylacium aduncum (nematoda: anisakidae) in larval herring clupea harengus

dc.contributor.author	Balbuena, Juan Antonio
dc.contributor.author	Karlsbakk, Egil
dc.contributor.author	Kvenseth, Anne Mette
dc.contributor.author	Saksvik, Monica
dc.contributor.author	Nylund, Are
dc.date.accessioned	2010-08-09T10:41:45Z
dc.date.available	2010-08-09T10:41:45Z
dc.date.issued	2000
dc.identifier.citation	BALBUENA DIAZ-PINES, Juan Antonio ; Karlsbakk, Egil ; Kvenseth, Anne Mette ; Saksvik, Monica ; Nylund, Are, 2000, Growth and emigration of third-stage larvae of hysterothylacium aduncum (nematoda: anisakidae) in larval herring clupea harengus, Journal of Parasitology, vol. 86, no. 6, p. 1271–1275	en
dc.identifier.uri	http://hdl.handle.net/10550/16784
dc.description.abstract	The growth and emigration of Hystherothylacium aduncum in laboratory-reared herring larvae Clupea harengus was studied. Experimental infections of 36-day-old herring larvae resulted in 126 hosts infected with 306 H. aduncum larvae. Regression analyses showed a significant worm emigration from the rectum to the head of the fish, accompanied by an increase in worm body length. The emigration was independent of worm intensity, which suggests an ontogenetic process. Some worms departed from this pattern by moving posteriorly or by penetrating into the muscle, and in 5 cases, the larvae were observed to leave living fish. This individual variation has not been observed in previous studies and might be explained by host signals related to condition or development stage. Indirect evidence suggested parasite-induced mortality in the tanks due to the emigrations because only 4 of the 126 infected fish survived 8 days postinfection; the emigration of H. aduncum affected vital organs, such as the heart and brain, and the larvae penetrating or leaving the host's tissues can cause extensive damage to the delicate herring larvae.	en
dc.language.iso	en	en
dc.subject	Growth ; Emigration ; Hysterothylacium aduncum larvae ; Larval herring clupea harengus	en
dc.title	Growth and emigration of third-stage larvae of hysterothylacium aduncum (nematoda: anisakidae) in larval herring clupea harengus	en
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS DE LA VIDA	en
dc.subject.unesco	UNESCO::CIENCIAS DE LA VIDA::Biología animal (Zoología) ::Parasitología animal	en
dc.identifier.idgrec	052716	en
dc.type.hasVersion	VoR	es_ES
dc.identifier.url	http://www.journalofparasitology.org/doi/pdf/10.1645/0022-3395%282000%29086%5B1271%3AGAEOTS%5D2.0.CO%3B2	en