Altered dopamine levels induced by the parasite <i>Profilicollis antarcticus</i> on its intermediate host, the crab <i>Hemigrapsus crenulatus</i>

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dc.contributor.authorRojas, JM
dc.contributor.authorOjeda, FP
dc.date.accessioned2025-01-21T01:07:17Z
dc.date.available2025-01-21T01:07:17Z
dc.date.issued2005
dc.description.abstractA scrotonergic pathway is apparently involved in parasite-host interactions. Previous studies conducted in our laboratory showed increased rates in oxygen consumption and alterations in body posture in the crab Hemigrapsus crenulatus parasitized by the acanthoceplialan, Profilicollis antarcticus. Such changes may be related to the functions described for biogenic amines in crustaceans. During the infective stage the acanthocephalans live freely in the hemocelomic cavity, suggesting that the possible alteration induced by biogenic amines may be related to their neurohormonal function in crustaceans. To test whether the presence of P. antarcticus produced neurohormonal changes in its intermediate host, H. crenulatus, we analyzed serotonin and dopamine levels in the host using HPLC with electrochemical detection. Two groups of 11 female crabs were studied one group was artificially inoculated with two cystacanths while the other was used as the control. Our results show a dramatic increase in hemolymph dopamine, but not serotonin in H. crenulatus parasitized by the acanthocephalan P. antarcticits. Our results, along with those reported by Maynard (1996), suggest a parasite-specific strategy involved in the behavior alteration caused by the acanthocephalans on their intermediate host. The use of a biogenic amine as a mechanism of interaction by the parasites gives them an endless number of alternative potential actions on their intermediate hosts.
dc.fuente.origenWOS
dc.identifier.eissn0717-6287
dc.identifier.issn0716-9760
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96305
dc.identifier.wosidWOS:000232626700015
dc.issue.numero2-3
dc.language.isoen
dc.pagina.final266
dc.pagina.inicio259
dc.revistaBiological research
dc.rightsacceso restringido
dc.subjectacanthocephalans
dc.subjectbiogenic amines
dc.subjectHPLC
dc.subjectparasite-host interaction
dc.subjectparasite transmission
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleAltered dopamine levels induced by the parasite <i>Profilicollis antarcticus</i> on its intermediate host, the crab <i>Hemigrapsus crenulatus</i>
dc.typeartículo
dc.volumen38
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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