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The occurrence and distribution of Trichodorus and Paratrichodorus spp. (Nematoda: Trichodoridae) in the Slovak Republic

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The occurrence of trichodorids in a selected range of biotopes (fields and gardens, grassland, vineyards, orchards, forests, river banks and bushland) and their geographical distribution were studied throughout Slovakia. From a total of 684 soil samples collected, trichodorids were recovered from 225 (= 33%). Although members of the family Trichodoridae were present in more than 50% of the samples from forests and river bank vegetation, the prevalence of these nematodes in other biotopes was less than 20%. Six Trichodorus species (T. primitivus, T. similis, T. sparsus, T. variopapillatus, T. viruliferus and an undescribed species) and two Paratrichodorus species (P. macrostylus and P. pachydermus) were identified. T. sparsus was the most frequently occurring species (58% of all trichodorid records); the prevalence of the other seven species each accounted for less than 10% of the records. Individual trichodorid species showed an association with characteristic types of vegetation; e.g., T. sparsus was the dominant species in forest biotopes, T. similis preferred grassland, and T. variopapillatus wet soil associated with river bank vegetation. With the exception of T. sparsus and P. macrostylus, which occurred in various types of soil (sandy to loamy-clay), the other trichodorid species were found exclusively in lighter soils (sandy to loamy-sandy). T. variopapillatus is reported from the Slovak Republic for the first time and the records of P. macrostylus occurring in various biotopes in Slovakia extends the information on geographical distribution and ecology of this rare species.

Vorkommen und Verbreitung von Trichodorus und Paratrichodorus spp. (Nematoda: Trichodoridae) in der Slowakischen Republik - Das Vorkommen von Trichodoriden in verschiedenen Biotoptypen (Acker und Garten, Grasland, Weinberge, Obstanlagen, Walder und Flussufer) und ihre geographische Verbreitung in der Slowakei wurden untersucht. In 225 (= 33%) von 684 untersuchten Bodenproben waren Trichodoriden nachweisbar. Wahrend in mehr als 50% der Proben aus Waldern und von Flussufern Arten der Familie Trichodoridae vorkamen, lag der Anteil 'positiver' Proben bei anderen Biotopen unter 20%. Sechs Trichodorus Arten (T. primitivus, T. similis, T. sparsus, T. variopapillatus, T. viruliferus und eine unbeschriebene Art) und zwei Paratrichodorus Arten (P. macrostylus, P. pachydermus) wurden nachgewiesen. T. sparsus wurde am haufigsten gefunden (58% aller TrichodoridenNachweise); der Anteil der ubrigen sieben Arten lag jeweils unter 10%. Einzelne Arten zeigten eine Bevorzugung bestimmter Vegetationstypen. So war T. sparsus die dominante Art in Waldbiotopen, T. similis bevorzugte Grasland und T. variopapillatus nasse Boden unter Flussufervegetation. Mit Ausnahme von T. sparsus und P. macrostylus, die in verschiedenen Bodenarten (sandig bis lehmigtonig) auftraten, wurden die ubrigen Arten ausschliesslich in leichten, sandigen bis sandig-lehmigen Boden gefunden. T. variopapillatus wird erstmals fur die Slowakische Republik gemeldet. Die Feststellung von P. macrostylus in verschiedenen Biotopen in der Slowakei erweitert unsere Kenntnisse uber die geographische Verbreitung und Okologie dieser seltenen Art.

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/content/journals/10.1163/156854199508586
1999-10-01
2016-12-08

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