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Tri-trophic interactions of soil mite Sancassania polyphyllae (Acari: Acaridae) with fungal biocontrol agents
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Harun Cimen ,
Ibrahim Cakmak ,
Selcuk Hazir
Ecosphere, Volume: 16, Issue: 12, Start page: e70469
Swansea University Author:
Mustapha Touray
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© 2025 The Author(s). Ecosphere published by Wiley Periodicals LLC on behalf of The Ecological Society of America. This is an open access article under the terms of the Creative Commons Attribution License.
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DOI (Published version): 10.1002/ecs2.70469
Abstract
Mycophagous invertebrates can significantly impact the efficacy of fungal biocontrol agents; yet the interaction between these agents and Sancassania polyphyllae (Acari: Acaridae), commonly found in soil ecosystems, remains poorly understood. Our study demonstrates that Sa. polyphyllae mites feed on...
| Published in: | Ecosphere |
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| ISSN: | 2150-8925 2150-8925 |
| Published: |
Wiley
2025
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa71042 |
| Abstract: |
Mycophagous invertebrates can significantly impact the efficacy of fungal biocontrol agents; yet the interaction between these agents and Sancassania polyphyllae (Acari: Acaridae), commonly found in soil ecosystems, remains poorly understood. Our study demonstrates that Sa. polyphyllae mites feed on fungus-infected insect cadavers as well as the mycelium and spores of Trichoderma afroharzianum and Metarhizium brunneum in pure cultures. Mite feeding activity was greater on Trichoderma than Metarhizium pure cultures, possibly due to Metarhizium's acaricidal effects, which impacted mite activity. Furthermore, mite feeding on fungus-infected insect cadavers caused visible damage to the integument. This feeding behavior significantly impacted fungal sporulation, a key factor in biocontrol efficacy. In both the M. brunneum-infected Galleria groups and the Tr. afroharzianum-infected Galleria groups, mite numbers increased over time, peaking around 9–11 days post-infection before slightly declining or plateauing. Notably, the fungi-infected insect tissue consistently exhibited significantly higher mite numbers than the pure cultures group at several time points. In dual-culture assays, Sa. polyphyllae mites preferentially fed on Fusarium oxysporum over Tr. afroharzianum. The presence of Fusarium may influence mite behavior and potentially reduce their impact on Trichoderma. This preference, possibly nutritional, requires further investigation. Consequently, Trichoderma's suppression of Fusarium in soil could significantly impact the food resources available to soil-dwelling mites like Sa. polyphyllae. Further research is needed to determine the nutritional basis of this feeding preference. |
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| Keywords: |
Astigmata, biological control, entomopathogenic fungi, infection, mycoparasitic fungi, Sancassania |
| College: |
Faculty of Science and Engineering |
| Funders: |
Aydin Adnan Menderes University. Grant Number: FEF-22014 |
| Issue: |
12 |
| Start Page: |
e70469 |