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Ditylenchus laurae sp. n. (Tylenchida: Anguinidae) from Poland – a new species of the D. dipsaci complex associated with a water plant, Potamogeton perfoliatus L.

In: Nematology
Authors:
Andrzej Tomasz Skwiercz1University of Warmia and Mazury, Prawocheńskiego 17, 10-722 Olsztyn, Poland

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Franciszek Wojciech Kornobis2Department of Zoology, Institute of Plant Protection – National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland

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Grażyna Winiszewska3Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679, Poland

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Arnika Przybylska4Interdepartmental Laboratory of Molecular Biology, Institute of Plant Protection – National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland

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Aleksandra Obrępalska-Stęplowska4Interdepartmental Laboratory of Molecular Biology, Institute of Plant Protection – National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland

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Magdalena Gawlak5Institute of Plant Protection – National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland

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Sergei A. Subbotin6Center of Parasitology of A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskii Prospect 33, Moscow 117071, Russia
7Plant Pest Diagnostic Center, California Department of Food and Agriculture, 3294 Meadowview Road, Sacramento, CA 95832, USA

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The genus Ditylenchus consists of more than 60 species, some of which are plant parasites. In this paper we report on Ditylenchus laurae sp. n. from Poland, a new species associated with the aquatic plant, Potamogeton perfoliatus L. Ditylenchus laurae sp. n. is characterised by a long and slender body with L = 1881 (1523-2095) μm and 1875 (1690-2089) μm, a = 88.8 (72.5-102.5) and 89.7 (71.9-97.9), stylet length = 10.8 (9.6-12.1) μm and 8.3 (7.7-9.0) μm, tail length = 117.2 (103.5-126.7) μm and 102.4 (98.3-113.6) μm in females and males, respectively; four incisures, rounded stylet knobs, long basal bulb (about ten times as long as wide), post-vulval uterine sac from 4.3-5.6 vulval body diam. long, and mucronate tail. Characterisation using the ITS rRNA, COI and hsp90 gene sequences was conducted and a phylogenetic analyses revealed that D. laurae sp. n. belongs to the D. dipsaci complex.

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