Insecticidal and antibacterial effects of some essential oils against the poultry pest Alphitobius diaperinus and its associated microorganisms
Alphitobius diaperinus is a worldwide poultry pest which causes several problems, including the dispersion of pathogenic microorganisms. This study aimed to evaluate the insecticidal activity of five essential oils (EOs) against A. diaperinus and their antimicrobial activity against some pathogenic...
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Published in | Journal of pest science Vol. 93; no. 1; pp. 403 - 414 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Alphitobius diaperinus
is a worldwide poultry pest which causes several problems, including the dispersion of pathogenic microorganisms. This study aimed to evaluate the insecticidal activity of five essential oils (EOs) against
A. diaperinus
and their antimicrobial activity against some pathogenic bacteria transmitted by this insect and against the mesophilic bacteria present on its external surface. The chemical composition of the EOs was determined, with the major components being: α-thujone in
Aloysia polystachya
EO; limonene in
Citrus sinensis
EO; 1,8-cineole in
Eucalyptus globulus
EO; terpinolene and thymol in
Origanum vulgare
EO; and eugenol in
Syzygium aromaticum
EO. The EO of
A. polystachya
showed the highest fumigant activity (LC
50
= 27.25 µL/L of air), followed by
E. globulus
EO (LC
50
= 36.49 µL/L of air). The EOs of
S. aromaticum
,
O. vulgare
, and
A. polystachya
revealed high contact toxicity, with LC
50
values of 0.052, 0.128, and 0.135 µL/cm
2
, respectively. In addition, EOs obtained from
O. vulgare
and
S. aromaticum
strongly inhibited the growth of
Escherichia coli
and
Staphylococcus aureus
and significantly reduced the microbial load of the insect.
Syzigium aromaticum
and
O. vulgare
affected both insects and bacteria, making them promising candidates to replace synthetic insecticides or to be incorporated into current strategies for the management of
A. diaperinus
, and also helping to reduce the bacteria associated with this coleopteran. To our knowledge, this is the first report of the insecticidal activity of the five selected EOs on
A. diaperinus
adults, as well as the effect of EOs on the microbial load of insects. |
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ISSN: | 1612-4758 1612-4766 |
DOI: | 10.1007/s10340-019-01141-5 |