Abstract
Members of the family Tylenchidae are highly abundant in soil habitats, including agricultural settings, where they play key ecological roles. In the present study, we identified three Tylenchidae species, namely Basiria bhabi, Coslenchus acceptus, and Filenchus vulgaris, using integrative taxonomy. The detailed morphological and morphometric characteristics, distribution, and host associations of each species were also discussed. Phylogenetic analyses of these populations with other Tylenchidae nematodes indicated the presence of divergent lineages in Filenchus and Basiria, whereas Coslenchus appeared to be a monophyletic genus. Herein, we aim to grow awareness about this common but least studied group of nematodes. The species reported in this study are new records for Canada, revealing that the identified nematode diversity in our cultivated areas is relatively underrepresented. Our analyses also provided greater taxonomic resolution and captured rare taxa that might have been missed or misidentified in prior nematode inventory surveys. These findings will add to our understanding of the nematofauna of southern Alberta, thereby providing a more complete picture of existing nematode diversity present in the fields of this highly cultivated region.
Highlights
IntroductionThe nematode family Tylenchidae Örley [1] is exceptionally diverse in soil habitats
We carefully examined the three Tylenchidae species found in southern Alberta and performed morphological and molecular analyses to confirm their identities
The Canadian populations of B. bhabi, C. acceptus, and F. vulgaris obtained in this study the family
Summary
The nematode family Tylenchidae Örley [1] is exceptionally diverse in soil habitats Members of this family have high ecological significance and prominence in both agricultural and natural systems [2,3,4]. The taxonomic placement of Tylenchidae in terms of feeding behavior is controversial [6,7], since the feeding habits and food preferences of the majority of tylenchid genera are unknown. Members of this family are either regarded as root hair/epidermal feeders [3], fungivores [8], or herbivores [9], or are generally referred to as plant associates [10]
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