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A Multivariate Study of Tylenchus Bastian 1865 (Nematoda, Tylenchidae) and Some Related Genera

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For more content, see Nematology.

In a multivariate analysis of the subfamilies Tylenchinae (Orley, 1880) Marcinowsky, 1909 and Psilenchinae Paramonov, 1967, 136 individual nematodes were assessed using 34 characters. For 99 of the nematodes the information was taken from the literature, while for the remaining 37, slides of nematodes collected from a peat bog in the West of Ireland was the source of data. A principle coordinate analysis showed that the species formed a homogeneous cluster and only in Aglenchus (Andrássy, 1954) Meyl, 1961 was there a tendency for the members of one genus to separate from those of other genera. There were some very high similarity coefficients both between species within a genus and between species from different genera. Some of the factors causing difficulties in the taxonomy of the group are discussed.

Affiliations: 1: Zoology Department, Trinity College, Dublin 2, Ireland


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