[Photoreactions of the littoral trematode Renicola thaidus (Trematoda: Renicolida)].
The behavioral response of Renicola thaidus cercariae (Renicolidae) to the light has been studied. The positive photo reaction was observed during the first hour of the cercariae free-living period (after shedding from the mollusc). Six hour old cercariae did not show any direct photo reaction. Temporal presence of the positive photo reaction promotes a wider spatial distribution of R. thaidus cercariae. This fact may increases a probability of successful finding and infection of the second intermediate host--bivalves such as the blue mussels. Besides, the more random distribution of infection in bivalve host populations is achieved. This circumstance increases a probability of infected bivalve to be eaten by the final hosts--seabirds.
Prokof'ev
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D000818:Animals; D001522:Behavior, Animal / Q000528:radiation effects*; D007814:Larva / Q000502:physiology; D008018:Life Cycle Stages; D008027:Light; D008974:Mollusca / Q000469:parasitology; D012623:Seawater / Q000469:parasitology*; D012800:Siberia; D013997:Time Factors; D014200:Trematoda / Q000469:parasitology / Q000502:physiology*