Rev 04/10/2023
Laimydorus Siddiqi, 1969
Note: the genus name is an anagram of Dorylaimus!
(Andrassy, 2009).
Aquatic and moist habitats. Several species reported from sandy sediments at the edges of rivers.
Categorized as omnivores (Yeates et al., 1993) and as a predator (Bilgrami and Gaugler (2005).
Feeding activities of the predatory nematodes Laimydorus baldus and Discolaimus major preying on Hirschmanniella oryzae were studied under laboratory conditions. Discolaimus major killed more prey, and fed and aggregated longer than L. baldus.
Predatory activities were greatest at 30◦C. Predators starved for 6 days detected prey rapidly and aggregated at the feeding site longest.
Predators were increasingly efficient at finding prey as prey density increased.
Prey search and predation abilities of L. baldus and D. major were governed regulated by temperature, prey density, starvation and prey incubation (Bilgrami and Gaugler, 2005). Predators starved for 10 days exhibited maximum response to the presence of prey. Predators detected prey kairomones at distances of 2-3 cm on agar plates (Pervez and Bilgrami, 2000),
Andrassy, I. 2009. Free-living Nematodes of Hungary III. Hungarian Natural History Museum, Budapest. 608p.
Bilgrami, A.L. and Gaugler, R. 2005. Feeding behaviour of the predatory nematodes Laimydorus baldus and Discolaimus major (Nematoda: Dorylaimida). Nematology 7:11-20.
Jimenez-Guirado, D. & Cadenas, M. J., 1985. Especies de Laimydorus Siddiqi, 1969 y descripcion de Chrysodorus longicaudatus gen. et sp. n. (Nematoda, Dorylaimidae) de la cuenca del R�o Guadalquivir. Misc. Zool., 9: 49-54.
Loof, P.A.A. 1996. Dichotomous and polytomous identification keys for females of the genera Prodorylaimus Andrassy, 1959 and Laimydorus Siddiqi, 1969 (Nematoda: Dorylaimoidea). Russian J. Nematology 4:7-28.
Pervez, R., Bilgrami, A.L. 2000. Some factors influencing chemoattraction behaviour of dorylaim predators, Laimydorus baldus and Discolaimus major towards prey kairomones. International Journal of Nematology 10:41-48.
Yeates, G.W., T. Bongers, R. G. M. De Goede, D. W. Freckman, and S. S. Georgieva. 1993. Feeding habits in soil nematode families and genera—An outline for soil ecologists. Journal of Nematology 25:315-331.
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