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

A serotonergic 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 acanthocephalan, Profilicollis antarcticus. Suc...

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Autores principales:	ROJAS,JOSÉ MIGUEL, OJEDA,F. PATRICIO
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2005
Materias:	acanthocephalans biogenic amines HPLC parasite-host interaction parasite transmission
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200015
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spelling	oai:scielo:S0716-976020050002000152007-01-04Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatusROJAS,JOSÉ MIGUELOJEDA,F. PATRICIO acanthocephalans biogenic amines HPLC parasite-host interaction parasite transmission A serotonergic 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 acanthocephalan, 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. antarcticus. 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 hostsinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.38 n.2-3 20052005-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200015en10.4067/S0716-97602005000200015
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	acanthocephalans biogenic amines HPLC parasite-host interaction parasite transmission
spellingShingle	acanthocephalans biogenic amines HPLC parasite-host interaction parasite transmission ROJAS,JOSÉ MIGUEL OJEDA,F. PATRICIO Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
description	A serotonergic 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 acanthocephalan, 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. antarcticus. 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
author	ROJAS,JOSÉ MIGUEL OJEDA,F. PATRICIO
author_facet	ROJAS,JOSÉ MIGUEL OJEDA,F. PATRICIO
author_sort	ROJAS,JOSÉ MIGUEL
title	Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
title_short	Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
title_full	Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
title_fullStr	Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
title_full_unstemmed	Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus
title_sort	altered dopamine levels induced by the parasite profilicollis antarcticus on its intermediate host, the crab hemigrapsus crenulatus
publisher	Sociedad de Biología de Chile
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602005000200015
work_keys_str_mv	AT rojasjosemiguel altereddopaminelevelsinducedbytheparasiteprofilicollisantarcticusonitsintermediatehostthecrabhemigrapsuscrenulatus AT ojedafpatricio altereddopaminelevelsinducedbytheparasiteprofilicollisantarcticusonitsintermediatehostthecrabhemigrapsuscrenulatus
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Altered dopamine levels induced by the parasite Profilicollis antarcticus on its intermediate host, the crab Hemigrapsus crenulatus

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