Search results for "Argulus foliaceus"

showing 5 items of 5 documents

Behavioural adaptations of argulid parasites (Crustacea: Branchiura) to major challenges in their life cycle.

2015

Fish lice (Argulus spp.) are obligate ectoparasites, which contrary to most aquatic parasites, retain the ability to swim freely throughout the whole of their life. In fish farms, they can quickly increase in numbers and without effective control cause argulosis, which results in the reduced growth and survival of their fish hosts. The morphology of Argulus spp, including their sensory organs, is suitable for both parasitism and free-swimming. By spending a considerable amount of time away from their host, these parasites risk being excessively dispersed, which could endanger mating success. Here we present a review of recent studies on the behaviour of Argulus spp, especially the aggregati…

Aggregative behaviourFish farmingPopulationArgulus coregoniZoologyParasitismReviewHost SpecificityHost-Parasite InteractionsFish DiseasesBehavioural tacticsAnimalsMatingeducationSwimmingeducation.field_of_studyLife Cycle StagesbiologyObligateBehavior AnimalBranchiuraEcologyHost (biology)ReproductionFishesLice InfestationsVectorsbiology.organism_classificationArgulus foliaceusInfectious DiseasesArguloidaFish ectoparasitesHost searchingParasitologyArgulus foliaceusParasitesvectors
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Light-mediated host searching strategies in a fish ectoparasite, Argulus foliaceus L. (crustacea: branchiura).

2000

Argulus foliaceus, an obligate fish ectoparasite, can search for its hosts in both light and dark conditions and uses vision in the light. We have examined what searching mode is used at night, when the infection rate was at its highest, and which stimuli produced by the fish are most important. A change of illumination produced a clear difference in the searching behaviour of adult Argulus females. The mean swimming speed and the area explored were 3-4 times higher in the dark, when the parasite employed a cruising search strategy. This changed to an ambush (hover-and-wait) strategy in the light. The swimming activity is accompanied by changes in metabolic costs; the activity of the electr…

LightZoologyEctoparasitic InfestationsHost-Parasite InteractionsElectron TransportFish DiseasesCrustaceaCyprinidaeAnimalsSwimmingPerchbiologyBranchiuraEcologyAquatic animalDarknessbiology.organism_classificationArgulus foliaceusInfectious DiseasesPercidaePerchesDarknessAnimal Science and ZoologyParasitologyFemaleRutilusFood DeprivationParasitology
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Host searching in Argulus foliaceus L. (Crustacea: Branchiura): the role of vision and selectivity.

1998

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…

PerchbiologyBranchiuraEcologyFishesZoologyEctoparasitic Infestationsbiology.organism_classificationCrustaceanArgulus foliaceusHost-Parasite InteractionsFish DiseasesInfectious DiseasesPercidaeSpecies SpecificityPerchesCrustaceaCyprinidaeJuvenileAnimalsAnimal Science and ZoologyParasitologyRutilusSwimmingVision OcularParasitology
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Host specificity of Argulus coregoni (Crustacea: Branchiura) increases at maturation.

2007

SUMMARYWe tested the hypothesis that host specificity in ectoparasites does not depend exclusively on the features of the host but also on surrounding habitats, using 2 fish ectoparasites, Argulus coregoni and A. foliaceus (Crustacea: Branchiura), occurring sympatrically in Finnish lakes. Although these parasites are considered to be of low specificity, we found that the larger of the 2 species, A. coregoni developed a pronounced preference for salmonid hosts at the beginning of maturation (defined by the presence of copulating specimens). Argulus foliaceus infects a much wider range of fish hosts. We showed that specialization of A. coregoni on salmonids does not necessarily result from in…

Time FactorsOntogenyPopulationCyprinidaeEctoparasitic InfestationsHost-Parasite InteractionsFish DiseasesSpecies SpecificityParasite hostingAnimalseducationFinlandLightingeducation.field_of_studybiologyEcologyBranchiurabiology.organism_classificationCrustaceanArgulus foliaceusOxygenInfectious DiseasesHabitatArguloidaOncorhynchus mykissAnimal Science and ZoologyParasitologyRainbow troutParasitology
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Behavioural adaptations of argulid parasites (Crustacea: Branchiura) to major challenges in their life cycle

2015

Fish lice (Argulus spp.) are obligate ectoparasites, which contrary to most aquatic parasites, retain the ability to swim freely throughout the whole of their life. In fish farms, they can quickly increase in numbers and without effective control cause argulosis, which results in the reduced growth and survival of their fish hosts. The morphology of Argulus spp, including their sensory organs, is suitable for both parasitism and free-swimming. By spending a considerable amount of time away from their host, these parasites risk being excessively dispersed, which could endanger mating success. Here we present a review of recent studies on the behaviour of Argulus spp, especially the aggregati…

vectorsaggregative behaviourArgulus coregonibehavioural tacticsfish ectoparasitesArgulus foliaceushost searching
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