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Micoletzkya
''Micoletzkya'' is a genus of predatory bark-beetle-associated nematodes in the family Diplogastridae.〔Sudhaus, W. & von Lieven, A.F. 2003. A phylogenetic classification and catalogue of the Diplogastridae (Secernentea, Nematoda). J. Nematode Morphol. System. 6: 43–89.〕〔Mayer, W.E., Herrmann, M. & Sommer, R.J. 2009. (Molecular phylogeny of beetle associated diplogastrid nematodes suggests host switching rather than nematode-beetle coevolution. BMC Evol. Biol. 9: 212. )〕 The genus was named for the Austrian nematologist Henrich Micoletzky. As of 2013 it consists of 25 described species.〔Susoy, Vladislav; Kanzaki, Natsumi & Herrmann, Matthias. 2013. Description of the bark beetle associated nematodes ''Micoletzkya masseyi'' n. sp and ''M. japonica'' n. sp (Nematoda: Diplogastridae). Nematology 15: 213–231.〕 == Ecology and life history == Nematodes of ''Micoletzkya'' live in symbiosis with bark beetles.〔Rühm, W. 1956. Die Nematoden der Ipiden. Parasitologische Schriftenreihe No. 6: 1–437.〕 The hosts include economically important species across North America and Europe such as the mountain pine beetle ''Dendroctonus ponderosae'' and European spruce bark beetle ''Ips typographus''.〔〔Massey, C.L. 1974. Biology and taxonomy of nematode parasites and associates of bark beetles in the United States. Agriculture Handb U S Dep Agric No. 446: 1–233.〕〔Susoy, V. & Herrmann, M. (2014). (Preferential host switching and codivergence shaped radiation of bark beetle symbionts, nematodes of ''Micoletzkya'' (Nematoda: Diplogastridae). Journal of evolutionary biology 27 (5), 889-898. )〕 The life history of the nematodes is closely linked to that of their hosts. Infective (dauer) larvae of ''Micoletzkya'' attach themselves onto the body surface of a beetle for transmission and resume their development in host breeding galleries. In the bark beetle galleries, nematodes go through a few free-living generations, presumably feeding on beetle-associated microorganisms and other nematodes, after which dauer larvae develop and attach to newly emerging bark beetles for transmission.〔
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