First isolation of a rhabdovirus from perch Perca fluviatilis in Switzerland
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First-year overwinter mortality in Eurasian perch (Perca fluviatilis L.)
The importance of overwinter mortality of 0+ perch (Perm fluviatilis L.) in central European lakes was estimated using a stochastic simulation model. The probability of overwinter mortality of a perch co hort was calculated by using a model developed for yellow perch (P. flavescens Mitchill). Winter duration from a long-term data set and the length of perch at the end of the first year from fi...
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Sperm production is a crucial factor for the potential reproductive success of males in many species (Nakatsuru & Kramer, 1982). Especially under strong sperm competition, higher sperm numbers in the ejaculates are likely to increase a male’s chance of fertilization (Parker et al., 1996). But sperm production is limited by physiological constraints, e.g. by testis size, which often depends on t...
متن کاملMetazoan Parasites of Perch Perca fluviatilis L. From Lake Sığırcı, Ipsala, Turkey
There has been no previous parasitological survey of perch Perca fluviatilis in Turkey. Consequently, the objectives of the present study were to investigate the metazoan parasite communities of perch and also to calculate infection parameters of the parasites in a eutrophic lake. A total of 52 perch were collected seasonally from Lake Sığırcı in Ipsala, Turkey, between April 2009 and February ...
متن کاملSelective predation by perch (Perca fluviatilis) on a freshwater isopod, in two macrophyte substrates
Rapporttyp Report category Licentiatavhandling x Examensarbete C-uppsats D-uppsats Övrig rapport _______________ Språk Language Svenska/Swedish x Engelska/English ________________ Titel Title Selective predation by perch (Perca fluviatilis) on a freshwater isopod, in two macrophyte substrates Författare Author Magnus Andersson Sammanfattning Abstract Recent studies show that populations of the ...
متن کاملOccurrence of parasitic ciliates (Protozoa) on perch (Perca fluviatilis) in Lake Vlasinsko
In the sample of 83 specimens of the perch (Perca fluviatilis L., 1758), caught on eight different sampling sites at the Vlasinsko Lake reservoir, in April–October 1993, 25 infested specimens were found. They were infested with the following species of parasitic ciliates: Trichodinella epizootica, Apiosoma robustum, Apiosoma piscicolum ssp. perci, Ichthyophthirius multifiliis, Chilodonella cypr...
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ژورنال
عنوان ژورنال: Diseases of Aquatic Organisms
سال: 2015
ISSN: 0177-5103,1616-1580
DOI: 10.3354/dao02908