Document Detail

Host searching in Argulus foliaceus L. (Crustacea: Branchiura): the role of vision and selectivity.
MedLine Citation:
PMID:  9614325     Owner:  NLM     Status:  MEDLINE    
In laboratory experiments the swimming behaviour of the ectoparasite Argulus foliaceus and its infection rates on juvenile perch (Perca fluviatilis) and roach (Rutilus rutilus) were examined. The highest infection rate and a preference for perch juveniles were obtained in darkness, the lowest infection rate and a lack of preference in the light, when aquaria with glass walls (high reflectivity) were used. In the light, when aquaria were lined with black plastic (low reflectivity) an intermediate level of infection for perch and the highest for roach was recorded. Under such conditions roach were significantly more heavily infected than perch; an attack rate 4 times greater was recorded for brighter (more reflective) roach juveniles than for perch. Within the aquaria with a low reflective interior parasites swam 4.4 times slower and were observed predominantly in the central area, while in the highly reflective aquaria fast swimming A. foliaceus were recorded mainly near the walls. The primary role of visual stimuli for the host search behavior of A. foliaceus in the light is suggested. Parasites can effectively use such stimuli only in the low reflective surroundings. Highly reflective glass aquarium walls produce numerous secondary local light sources, which cause fast, erratic parasite movements and prevent the efficient location of potential hosts.
V N Mikheev; E T Valtonen; P Rintamäki-Kinnunen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Parasitology     Volume:  116 ( Pt 5)     ISSN:  0031-1820     ISO Abbreviation:  Parasitology     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-07-09     Completed Date:  1998-07-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401121     Medline TA:  Parasitology     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  425-30     Citation Subset:  IM    
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.
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MeSH Terms
Crustacea / physiology*
Ectoparasitic Infestations / parasitology,  veterinary*
Fish Diseases / parasitology*
Fishes / parasitology*
Host-Parasite Interactions
Perches / parasitology
Species Specificity
Vision, Ocular

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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