Abstract
The red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae) is an invasive and widely dispersed pest in the Neotropical region. It is a species of economic importance in coconut palm plantations, Cocos nucifera L. (Arecaceae), necessitating the search for new management alternatives with lower risks to human health and the environment. The aim of this study was to evaluate the acaricidal activity of ethanolic leaf extracts of “pepper” Pimenta dioica (L.) Merr. (Myrtaceae), “culantro” Eryngium foetidum L. (Apiaceae) and “basil” Ocimum basilicum L. (Lamiaceae) against R. indica under laboratory conditions. R. indica females were exposed to the plant extracts at dilutions of 0.25, 0.50, 0.75 and 1% (v/v). Each experimental unit consisted of a group of 10 female mites confined on a portion of coconut palm leaflet, previously impregnated with plant extract or distilled water (control). Each treatment consisted of a total of 100 mites (10 replicates). Mite mortality was recorded after 24, 48 and 72 h. The R. indica mortality percentages increased due to the increase in both the concentration of the extracts and the exposure time. All extracts at the 1% dilution and 72 h exposure time caused the highest mortality percentages: for P. dioica 92%, E. foetidum 81% and O. basilicum 77%. Fractions of total phenols and tannins were the most abundant compounds in the three plant extracts. Both groups of compounds could be primarily responsible for the acaricidal activity of these plant extracts against R. indica.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Red palm mite mortality rose with extract concentration and exposure time.
- Taxon
- R. indica
Raoiella indicae0 - Treatment
- concentration of the extractse0
- Outcome
- R. indica mortality percentagese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The R. indica mortality percentages increased due to the increase in both the concentration of the extracts and the exposure time.”
Claim · model-written summary
P. dioica extract at 1% dilution and 72 h caused 92% mite mortality.
- Taxon
- P. dioica
Pimenta dioicae0 - Treatment
- 1% dilution and 72 h exposure timee0
- Outcome
- mortality percentagese0
- Direction
- higheste0
- Value
- 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All extracts at the 1% dilution and 72 h exposure time caused the highest mortality percentages: for P. dioica 92%, E. foetidum 81% and O. basilicum 77%.”
Claim · model-written summary
E. foetidum extract at 1% dilution and 72 h caused 81% mite mortality.
- Taxon
- E. foetidum
_4.jpg?width=60)
Eryngium foetidume0 - Treatment
- 1% dilution and 72 h exposure timee0
- Outcome
- mortality percentagese0
- Direction
- higheste0
- Value
- 81%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_4.jpg?width=500)
Verbatim
e0“All extracts at the 1% dilution and 72 h exposure time caused the highest mortality percentages: for P. dioica 92%, E. foetidum 81% and O. basilicum 77%.”
Claim · model-written summary
O. basilicum extract at 1% dilution and 72 h caused 77% mite mortality.
- Taxon
- O. basilicum
Ocimum basilicume0 - Treatment
- 1% dilution and 72 h exposure timee0
- Outcome
- mortality percentagese0
- Direction
- higheste0
- Value
- 77%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All extracts at the 1% dilution and 72 h exposure time caused the highest mortality percentages: for P. dioica 92%, E. foetidum 81% and O. basilicum 77%.”
Claim · model-written summary
Total phenols and tannins were the most abundant fractions in the three extracts.
Verbatim
e0“Fractions of total phenols and tannins were the most abundant compounds in the three plant extracts.”