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This work was supported by Proyecto I +D +I CIBR - FITE 2021 Nuevas estrategias de control del escarabajo de la trufa en Teruel.

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Navarro-Rocha, JulianaAuthor

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May 5, 2024
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Compatibility of entomopathogenic nematodes and essential oils: A new step for integrated pest management of the truffle beetle

Publicated to:Biological Control. 190 105462- - 2024-02-13 190(), DOI: 10.1016/j.biocontrol.2024.105462

Authors: Julia, Ivan; de Herrera, Marina Seco; Morton, Ana; Garriga, Anna; Tapia, Daniel; Navarro-Rocha, Juliana; Garcia-del-Pino, Fernando

Affiliations

Ctr Invest & Tecnol Agroalimentaria Aragon, Zaragoza, Spain - Author
Inst Ciencias Agr, CSIC, Madrid, Spain - Author
Univ Autonoma Barcelona, Dept Biol Anim Biol Vegetal & Ecol, Fac Biociencies, Bellaterra, Barcelona, Spain - Author

Abstract

The European truffle beetle, Leiodes cinnamomeus, is the most important pest in black truffle (Tuber melanosporum) plantations. Entomopathogenic nematodes (EPNs) are promising biological control agents against L. cinnamomeus. Essential oils (EOs) are also recently being investigated for the control of the adults of this pest. Therefore, both control methods could be combined in Integrated Pest Management (IPM) programs to enhance their efficacy. However, limited information exists regarding the effects of the EOs on EPNs and so their compatibility. The aims of our work were to study the effects of three previously described insecticidal and nematicidal essential oils, Allium sativum, Mentha suaveolens, and Satureja montana, on the survival, infectivity, reproduction, and attraction behaviour of three EPN species: Steinernema feltiae, Steinernema carpocapsae and Heterorhabditis bacteriophora. Therefore, we conducted three experiments under laboratory conditions to observe the lethal and sublethal effects by direct contact, the lethal effect by fumigation, and the chemotaxis response. Allium sativum caused the highest mortality rates in all three EPN species at 24 and 72 h post application whether by direct contact (97-99%) or fumigation (40-42%), and it also reduced their infective capacity on Galleria mellonella. Satureja montana EO caused low mortality rates compared to A. sativum, but it was significantly more lethal (6-8%) than the control (0-3%) at 72 h in the direct contact assay. It also displayed repellent properties against S. feltiae and H. bacteriohora in the chemotaxis assay. In contrast, M. suaveolens EO exhibited minimal impact on the survival, infectivity and reproduction of all three EPN species. Therefore, our results suggest M. suaveolens oil may be the most compatible EO for use integrated with EPNs. Further validation under field conditions and in the presence of L. cinnamomeus is necessary to confirm the practical applicability of these findings.

Keywords

Allium sativumChemotaxisFeltiaeHeterorhabditidaeHeterorhabditis bacteriophoraInsecticidesMentha suaveolensSatureja montanaSteinernema carpocapsaeSteinernema feltiaeSteinernema-carpocapsaeVariability

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Biological Control due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 54/174, thus managing to position itself as a Q1 (Primer Cuartil), in the category Biotechnology & Applied Microbiology.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-07-12:

  • WoS: 3
  • Scopus: 4

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-07-12:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 14.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 17 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 4.05.
  • The number of mentions on the social network X (formerly Twitter): 6 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: http://hdl.handle.net/10532/6895