Nematophagous fungi (Orbiliales) capturing, destroying and feeding on the histotrophic larvae of Haemonchus contortus (Nematoda: Trichostrongylidae)
DOI:
https://doi.org/10.33885/sf.2011.3.1078Keywords:
nematode-trapping fungi, Arthrobotrys, MonacrosporiumAbstract
This research was aimed at investigating the predatory behavior of three
nematophagous fungi against the histotrophic larvae of H. contortus (L ). Infective larvae (L ) 4 3
of H. contortus were used for comparison. Three nematophagous fungi were isolated from
soil and identified as Arthrobotrys oligospora, A. musiformis and Monacrosporium
thaumasium. Two series of agar plateswere used to grow the three NF. Two hundred
histotrophic or infective larvae of H. contortus were added to series 1 plates and series 2
plates, respectively, and kept at room temperature. The reduction in larval population was
estimated by comparing the mean number of larvae recovered from both series. Capture
rates of infective larvae were as follows: A. oligospora 90.3%, A. musiformis 97%, and M.
thaumasium 62.3% (P>0.0001). In comparison, the predatory capture rates of t the
histotrophic larval populations were as follows: A. oligospora 63.3%; A. musiformis 73.2%
and M. thaumasium 69.2% (P>0.0003). The lowest capture rate of histotrophic larvae was
observed with A. oligospora and A. musiformis
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