1. Differential influence of Pomphorhynchus laevis (Acanthocephala) on brain serotonergic activity in two congeneric host species
- Author
-
Marie-Jeanne Perrot-Minnot, Luke S Tain, Frank Cézilly, Biogéosciences [UMR 6282] [Dijon] (BGS), Centre National de la Recherche Scientifique (CNRS)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Department of Biomedical Sciences, University of Sheffield [Sheffield], Postdoctoral grant from the Conseil Régional de Bourgogne, Biogéosciences [Dijon] ( BGS ), and AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS )
- Subjects
Light ,MESH : Serotonin ,[SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology ,MESH : Host-Parasite Interactions ,5-HT ,Introduced species ,biological invasion ,MESH : Behavior, Animal ,Gammarus spp ,host manipulation ,Acanthocephala ,MESH: Amphipoda ,MESH: Behavior, Animal ,[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology, environment/Symbiosis ,MESH : Light ,Parasite hosting ,MESH: Animals ,biology ,Behavior, Animal ,Ecology ,MESH : Acanthocephala ,[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] ,Brain ,MESH : Amphipoda ,Agricultural and Biological Sciences (miscellaneous) ,[ SDV.BID.EVO ] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] ,[ SDV.NEU.NB ] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology ,General Agricultural and Biological Sciences ,Research Article ,[ SDV.MP.PAR ] Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology ,Serotonin ,Zoology ,MESH: Host-Parasite Interactions ,Host-Parasite Interactions ,MESH: Brain ,Species Specificity ,Gammarus roeseli ,MESH : Species Specificity ,MESH: Species Specificity ,Animals ,[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology ,Amphipoda ,Host (biology) ,MESH: Acanthocephala ,biology.organism_classification ,MESH: Light ,Gammarus pulex ,Pulex ,MESH : Brain ,Pomphorhynchus laevis ,MESH: Serotonin ,MESH : Animals ,[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis - Abstract
The physiological mechanisms by which parasites with complex life cycles manipulate the behaviour of their intermediate hosts are still poorly understood. In Burgundy, eastern France, the acanthocephalan parasitePomphorhynchus laevisinverses reaction to light in its amphipod hostGammarus pulex, but not inGammarus roeseli, a recent invasive species. Here, we show that this difference in manipulation actually reflects a difference in the ability of the parasite to alter brain serotonergic (5-HT) activity of the two host species. Injection of 5-HT in uninfected individuals of both host species was sufficient to inverse reaction to light. However, a difference in brain 5-HT immunocytochemical staining levels between infected and uninfected individuals was observed only inG. pulex. Local adaptation of the parasite to the local host species might explain its inability to manipulate the behaviour and nervous system of the invasive species.
- Published
- 2007