<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Biology of <italic>Fictor composticola</italic> has been studied on <italic>Aphelenchus avenae in vitro.</italic> It reproduces by amphimixis, embryonic development is completed in 24 - 27 h and life cycle in 3 - 4 days. Fusion of sperm and egg pronuclei occurs in the uteri. Pulsation of median oesophageal bulb and pressing of lips against egg shell is seen just prior to hatching but teeth seem to play no role in this process. No moulting occurs inside the egg shell and the first stage juvenile hatches out. Female and male undergo mating upon addition of water in the culture plates and continue to swim in copula for a considerable time. A female lays 1.6 - 4.0 eggs in 24 h while feeding upon <italic>A. radicicolus.</italic> Predation and reproduction is affected by the temperature and 25 - 35 °C is the optimum range for these phenomena. Process of feeding as recorded with a CCTV attached to a compound microscope is described. <italic>F. composticola</italic> engulfs small preys; sucks the intestinal contents while holding them or cuts the body wall of large-sized preys and then feeds on prolapsed organs. Two sexes differ in their efficiencies of predation, a female on an average kills 53 <italic>A. avenae</italic> as compared to 11 by a male in 24 h. <italic>F. composticola</italic> feeds and reproduces on mycophagous nematodes and juveniles of root- knot, cyst and citrus nematodes but does not prey upon adult nematodes having coarsely annulated cuticle. Cannibalism in this species is also observed. <italic>F. composticola</italic> and <italic>Seinura paratenuicaudata</italic> prey upon each other. Biocontrol potential of <italic>F. composticola</italic> for managing nematode problems in button mushroom and agricultural crops has also been discussed.</p></abstract>

Biology of Fictor composticola has been studied on Aphelenchus avenae in vitro. It reproduces by amphimixis, embryonic development is completed in 24 - 27 h and life cycle in 3 - 4 days. Fusion of sperm and egg pronuclei occurs in the uteri. Pulsation of median oesophageal bulb and pressing of lips against egg shell is seen just prior to hatching but teeth seem to play no role in this process. No moulting occurs inside the egg shell and the first stage juvenile hatches out. Female and male undergo mating upon addition of water in the culture plates and continue to swim in copula for a considerable time. A female lays 1.6 - 4.0 eggs in 24 h while feeding upon A. radicicolus. Predation and reproduction is affected by the temperature and 25 - 35 °C is the optimum range for these phenomena. Process of feeding as recorded with a CCTV attached to a compound microscope is described. F. composticola engulfs small preys; sucks the intestinal contents while holding them or cuts the body wall of large-sized preys and then feeds on prolapsed organs. Two sexes differ in their efficiencies of predation, a female on an average kills 53 A. avenae as compared to 11 by a male in 24 h. F. composticola feeds and reproduces on mycophagous nematodes and juveniles of root- knot, cyst and citrus nematodes but does not prey upon adult nematodes having coarsely annulated cuticle. Cannibalism in this species is also observed. F. composticola and Seinura paratenuicaudata prey upon each other. Biocontrol potential of F. composticola for managing nematode problems in button mushroom and agricultural crops has also been discussed.

Biology and predatory attributes of a diplogasterid nematode, <italic>Fictor composticola</italic> Khan <italic>et al.</italic>, 2008

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Biology and predatory attributes of a diplogasterid nematode,  Khan , 2008

Biology of Fictor composticola has been studied on Aphelenchus avenae in vitro. It reproduces by amphimixis, embryonic development is completed in 24 - 27 h...

Biology and predatory attributes of a diplogasterid nematode, Fictor composticola Khan et al., 2008

Publié en ligne: 02 févr. 2015

Pages: 50 - 57

Reçu: 15 juil. 2014

Accepté: 10 oct. 2014

DOI: https://doi.org/10.1515/helmin-2015-0009

Mots clés
reproduction, feeding preferences, prey range, biology, cannibalism

© 2015 Institute of Parasitology, SAS, Košice

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Biology and predatory attributes of a diplogasterid nematode, Fictor composticola Khan et al., 2008

Publié en ligne: 02 févr. 2015

Pages: 50 - 57

Reçu: 15 juil. 2014

Accepté: 10 oct. 2014

DOI: https://doi.org/10.1515/helmin-2015-0009

Mots clésreproduction, feeding preferences, prey range, biology, cannibalism

© 2015 Institute of Parasitology, SAS, Košice

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
reproduction, feeding preferences, prey range, biology, cannibalism