Eur. J. Entomol. 120: 182-186, 2023 | DOI: 10.14411/eje.2023.023

Assemblage of entomopathogenic fungi infesting immature stages of Noctuidae (Lepidoptera): High diversity but low effect on host populationsShort Communication

Robin GIELEN ORCID...1, Tiit TEDER ORCID...1, 2, Kadri PÕLDMAA ORCID...3, Toomas TAMMARU ORCID...1
1 Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, J. Liivi 2, EE-50409 Tartu, Estonia; e-mails: robin.gielen@ut.ee, tiit.teder@ut.ee, toomas.tammaru@ut.ee
2 Department of Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Praha 6 - Suchdol, CZ-16521, Czech Republic
3 Department of Botany, Institute of Ecology and Earth Sciences, University of Tartu, J. Liivi 2, EE-50409 Tartu, Estonia; e-mail: kadri.poldmaa@ut.ee

Populations of herbivorous insects are considered to be primarily regulated by natural enemies. However, little is known about the ecological role of entomopathogenic fungi. There is very little data on the diversity and prevalence of fungal pathogens in natural insect populations. In this study, the percentage mortality attributable to fungal pathogens for the immature stages of three noctuid moths feeding inside the stems of the herbaceous plant, Typha latifolia, were determined. The average percentage mortality caused by fungal pathogens was around 8%, with the value never exceeding 20% at any of the studied sites. As many as ten species of fungi were identified in the 52 infected larvae/pupae collected, this high diversity is consistent with the results of comparable studies. The prevalence of fungal infections did not correlate with host population density or performance of the host insects. This study contributes to the emerging generalisation that populations of insects commonly harbour diverse assemblages of pathogenic fungi, but with low overall prevalence. A significant contribution of these antagonists to regulating insect populations is unlikely.

Keywords: Population dynamics, mortality, insect pathogens, survival, parasitoids

Received: January 20, 2023; Revised: May 2, 2023; Accepted: May 2, 2023; Published online: June 5, 2023  Show citation

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GIELEN, R., TEDER, T., PÕLDMAA, K., & TAMMARU, T. (2023). Assemblage of entomopathogenic fungi infesting immature stages of Noctuidae (Lepidoptera): High diversity but low effect on host populations. EJE, 120, Article 182-186. https://doi.org/10.14411/eje.2023.023
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    References

    1. Abarenkov K., Tedersoo L., Nilsson R.H., Vellak K., Saar I., Veldre V., Parmasto E., Prous M., Aan A., Ots M. et al. 2010: PlutoF - a Web Based Workbench for Ecological and Taxonomic Research, with an Online Implementation for Fungal ITS Sequences: Evolutionary Bioinformatics. URL: https://doi.org/10.4137/EBO.S6271 Go to original source...
    2. Barta M. & Cagáò L. 2003: Entomophthoralean fungi associated with the common nettle aphid (Microlophium carnosum Buckton) and the potential role of nettle patches as reservoirs for the pathogens in landscape. - Anz. Schädlingsk. 76: 6-13. Go to original source...
    3. Bates D., Mächler M., Bolker B. & Walker S. 2015: Fitting linear mixed-effects models using lme4. - J. Stat. Softw. 67: 1-48. Go to original source...
    4. Dallas T.A., Carlson C.J., Stephens P.R., Ryan S.J. & Onstad D.W. 2022: insectDisease: programmatic access to the Ecological database of the world's insect pathogens. - Ecography 2022: e06152, 6 pp. Go to original source...
    5. Elkinton J.S., Bittner T.D., Pasquarella V.J., Boettner G.H., Liebhold A.M., Gould J.R., Faubert H., Tewksbury L., Broadley H.J., Havill N.P. & Hajek A.E. 2019: Relating aerial deposition of Entomophaga maimaiga conidia (Zoopagomycota: Entomophthorales) to mortality of gypsy moth (Lepidoptera: Erebidae) larvae and nearby defoliation. - Environ. Entomol. 48: 1214-1222. Go to original source...
    6. Estonian Land Board 2022: Web Maps. Geoportal of Estonian Land Board. URL: https://geoportaal.maaamet.ee/eng (last accessed 28 Nov. 2022).
    7. Georgieva M., Takov D., Georgiev G., Pilarska D., Pilarski P., Mirchev P. & Humber R. 2014: Studies on non-target phyllophagous insects in oak forests as potential hosts of Entomophaga maimaiga (Entomophthorales: Entomophthoraceae) in Bulgaria. - Acta Zool. Bulgar. 66: 115-120. Go to original source...
    8. Gielen R., Meister H., Tammaru T. & Põldmaa K. 2021: Fungi recorded on folivorous Lepidoptera: High diversity despite moderate prevalence. - J. Fungi 7: 25, 8 pp. Go to original source...
    9. Gielen R., Põldmaa K. & Tammaru T. 2022a: In search of ecological determinants of fungal infections: A semi-field experiment with folivorous moths. - Ecol. Evol. 12: e8926, 12 pp. Go to original source...
    10. Gielen R., Robledo G., Zapata A.I., Tammaru T. & Põldmaa K. 2022b: Entomopathogenic fungi infecting lepidopteran larvae: A case from entral Argentina. - Life 12: 974, 9 pp. Go to original source...
    11. Hesketh H., Roy H.E., Eilenberg J., Pell J.K. & Hails R.S. 2010: Challenges in modelling complexity of fungal entomopathogens in semi-natural populations of insects. - BioControl 55: 55-73. Go to original source...
    12. Hochberg M.E. & Ives A.R. 2000: Parasitoid Population Biology. Princeton University Press, Princeton, NJ, 384 pp. Go to original source...
    13. Kõljalg U., Nilsson H.R., Schigel D., Tedersoo L., Larsson K.-H., May T.W., Taylor A.F.S., Jeppesen T.S., Frøslev T.G., Lindahl B.D. et al. 2020: The taxon hypothesis paradigm - On the unambiguous detection and communication of taxa. - Microorganisms 8: 1910, 25 pp. Go to original source...
    14. Lacey L.A., Grzywacz D., Shapiro-Ilan D.I., Frutos R., Brownbridge M. & Goettel M.S. 2015: Insect pathogens as biological control agents: Back to the future. - J. Invertebr. Pathol. 132: 1-41. Go to original source...
    15. Peterson R.K.D., Davis R.S., Higley L.G. & Fernandes O.A. 2009: Mortality risk in insects. - Environ. Entomol. 38: 2-10. Go to original source...
    16. Poitevin C.G., Porsani M.V., Poltronieri A.S., Zawadneak M.A.C. & Pimentel I.C. 2018: Fungi isolated from insects in strawberry crops act as potential biological control agents of Duponchelia fovealis (Lepidoptera: Crambidae). - Appl. Entomol. Zool. 53: 323-331. Go to original source...
    17. Põldmaa K., Bills G., Lewis D.P. & Tamm H. 2019: Taxonomy of the Sphaerostilbella broomeana-group (Hypocreales, Ascomycota). - Mycol. Progress 18: 77-89. Go to original source...
    18. Price P.W., Denno R.F., Eubanks M.D., Finke D.L. & Kaplan I. 2011: Insect Ecology: Behavior, Populations and Communities. 1st ed. Cambridge University Press, Cambridge, UK, 816 pp. Go to original source...
    19. R Core Team 2021: R: A language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, URL: https://www.R-project.org/
    20. Teder T. & Tammaru T. 2002: Cascading effects of variation in plant vigour on the relative performance of insect herbivores and their parasitoids: Cascading effects and population dynamics. - Ecol. Entomol. 27: 94-104. Go to original source...
    21. Teder T., Tammaru T. & Pedmanson R. 1999: Patterns of host use in solitary parasitoids (Hymenoptera, Ichneumonidae): field evidence from a homogeneous habitat. - Ecography 22: 79-86. Go to original source...
    22. Teder T., Tammaru T. & Kaasik A. 2013: Exploitative competition and coexistence in a parasitoid assemblage. - Popul. Ecol. 55: 77-86. Go to original source...
    23. Vega F.E. 2018: The use of fungal entomopathogens as endophytes in biological control: a review. - J. Forest Res. 110: 4-30. Go to original source...
    24. Vega F.E. & Kaya H.K. 2012: Insect Pathology. 2nd ed. Academic Press, Cambridge, MA, 508 pp.

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