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Titolo:
Effects of Schistocephalus solidus infection on brain monoaminergic activity in female three-spined sticklebacks Gasterosteus aculeatus
Autore:
Overli, O; Pall, M; Borg, B; Jobling, M; Winberg, S;
Indirizzi:
Uppsala Univ, Dept Anim Dev & Genet, Evolutionary Biol Ctr, SE-75236 Uppsala, Sweden Uppsala Univ Uppsala Sweden SE-75236 Biol Ctr, SE-75236 Uppsala, Sweden Uppsala Univ, Dept Comparat Physiol, Evolutionary Biol Ctr, SE-75236 Uppsala, Sweden Uppsala Univ Uppsala Sweden SE-75236 Biol Ctr, SE-75236 Uppsala, Sweden Stockholm Univ, Dept Zool, SE-10691 Stockholm, Sweden Stockholm Univ Stockholm Sweden SE-10691 ool, SE-10691 Stockholm, Sweden Univ Tromso, Norwegian Coll Fisheries Sci, N-9037 Tromso, Norway Univ Tromso Tromso Norway N-9037 ll Fisheries Sci, N-9037 Tromso, Norway
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1474, volume: 268, anno: 2001,
pagine: 1411 - 1415
SICI:
0962-8452(20010707)268:1474<1411:EOSSIO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHARR SALVELINUS-ALPINUS; ARCTIC-CHARR; 3-SPINED STICKLEBACKS; INTERMEDIATE HOST; STRESS RESPONSES; SOCIAL-DOMINANCE; BEHAVIOR; SEROTONIN; FISH; GOLDFISH;
Keywords:
Gasterosteus aculeatus; host manipulation; monoamines; parasites; Schistocephalus solidus;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Overli, O Uppsala Univ, Dept Anim Dev & Genet, Evolutionary Biol Ctr, Norbyvagen 18A, SE-75236 Uppsala, Sweden Uppsala Univ Norbyvagen 18A Uppsala Sweden SE-75236 ala, Sweden
Citazione:
O. Overli et al., "Effects of Schistocephalus solidus infection on brain monoaminergic activity in female three-spined sticklebacks Gasterosteus aculeatus", P ROY SOC B, 268(1474), 2001, pp. 1411-1415

Abstract

The three-spined stickleback Gasterosteus aculeatus is an intermediate host of the tapeworm Schistocephalus solidus. Changes in predator avoidance, foraging and shoaling behaviour have been reported in sticklebacks infested with S. solidus, but the mechanisms underlying parasite-induced behaviouralchanges are not understood. Monoamine neurotransmitters are involved in the control of behaviour and central monoaminergic systems are sensitive to various stressors. Thus, the behavioural effects of S. solidus infestation might be a reflection of changes in brain monoaminergic activity in the stickleback host. The concentrations of 5-hydroxytryptamine (5-HT), dopamine (DA), norepinephrine (NE) and their metabolites 5-hydroxy-indoleacetic acid (5-HIAA), homovanilic acid (HVA) and 3-methoxy-4-hydroxyphenylglycol (MHPG) were measured in the telecephalons, hypothalami and brainstems of parasitized and non-parasitized female sticklebacks held in the laboratory. The ratios of 5-HIAA:5-HT were significantly elevated in both the hypothalami and brainstems of infected sticklebacks. The concentrations of 5-HT and NE were significantly reduced in the telencephalons of infected fish as compared with controls, but there was no elevation of metabolite concentrations. The results are consistent with chronic stress in infected fish, but may also reflect other alteration of neuroendocrine status resulting from parasite infection.

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Documento generato il 04/07/20 alle ore 14:08:42