Nematode destroying fungi in some soils of Mexico. cultivation and Identification of depredators and prey

Authors

  • Patria Lappe Laboratorio de Micología, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México. México, D.F., México
  • Miguel Ulloa Laboratorio de Micología, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México. México, D.F., México

DOI:

https://doi.org/10.33885/sf.1982.2.556

Abstract

This paper describes the depredator-prey and endoparasite-host relationships betvveen
certain species of fungí and nematodes, observed in various samples of Mexican
soils processed in the laboratory. These relationships were studied in vitro; five species
of nematode-destroyíng fungí were found, three of them depredators (Arthrobotrys conoides,
A. dactyloides and A. oligospora), and two endoparasites (Harposporium anguillulae
and Verticillium sp.). These fungal species are cited for México for the first time. The
species of attacked nematodes belong to the genera Rhabditis (free living) and Aphelenchus
(plant parasitic).
To isolate the fungí water-agar plates and dilute corn meal-agar plates (with and
without nematode bait) were used, either sprinkled with powdered soil or inoculated
with suspensions of soil and fungal spores obtained by differential centrifugation. Even
though the five species of nematode-destroying fungí developed in vitro along with their
prey, only the three species of Arthrobotrys were obtained in puré culture on V8-agar.
The nematodes were isolated in water-agar plates and dilute corn meal-agar plates
sprinkled with powdered soil, or by means of the Baermann's funnel; puré cultures of
the two genera were obtained on water-agar plates partially covered with powdered
peas.
In addition to reporting the fungus-nematode relationships, this paper presents
illustrations of the organisms involved, brief descriptions of the identified fungí, and
comments regarding their biológica! importance.

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How to Cite

Lappe, P., & Ulloa, M. (2016). Nematode destroying fungi in some soils of Mexico. cultivation and Identification of depredators and prey. Scientia Fungorum, 2(17), 99–113. https://doi.org/10.33885/sf.1982.2.556

Issue

No. 17 (1982): BSMM núm. 17 1982

Section

Original papers

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