Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island
The western flower thrips, Frankliniella occidentalis (Pergande), has been present on Reunion Island since 1987. The tomato spotted wilt virus, which is transmitted by F. occidentalis, was first observed on the island in 1991. Because of the strong threat to flower crops, we studied western flower thrips dynamics at a flower farm (900 m elevation) from 1993 to 1997. The population dynamics were monitored using sticky traps. The density of western flower thrips was studied through auto-correlograms and cross-correlograms with climatic data (temperature, relative humidity, rainfall). Thrips populations varied annually, typically due to temperature variation. Stepwise regression allowed us to fit a model of density increment including 2 climatic parameters: In (R) at lag = 0 and H at lag = ?3 (with R for rainfall, and H for relative humidity; 1 lag = 15 d) and auto-regressive moving average terms for residuals. It appeared the western flower thrips was present all year round on the site but density started to increase when temperatures reached 15°C. Nevertheless, the density decreased before the mean temperature reached its maximum. Heavy rainfall, involving submergence of pupae or high relative humidity, conditions which are favorable to an entomopathogen, could explain this early decrease.
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dig-cirad-fr-5595012023-07-18T09:46:35Z http://agritrop.cirad.fr/559501/ http://agritrop.cirad.fr/559501/ Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island. Boissot Nathalie, Reynaud Bernard, Letourmy Philippe. 1998. Environmental Entomology, 27 (6) : 1437-1443.https://doi.org/10.1093/ee/27.6.1437 <https://doi.org/10.1093/ee/27.6.1437> Researchers Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island Boissot, Nathalie Reynaud, Bernard Letourmy, Philippe eng 1998 Environmental Entomology H10 - Ravageurs des plantes The western flower thrips, Frankliniella occidentalis (Pergande), has been present on Reunion Island since 1987. The tomato spotted wilt virus, which is transmitted by F. occidentalis, was first observed on the island in 1991. Because of the strong threat to flower crops, we studied western flower thrips dynamics at a flower farm (900 m elevation) from 1993 to 1997. The population dynamics were monitored using sticky traps. The density of western flower thrips was studied through auto-correlograms and cross-correlograms with climatic data (temperature, relative humidity, rainfall). Thrips populations varied annually, typically due to temperature variation. Stepwise regression allowed us to fit a model of density increment including 2 climatic parameters: In (R) at lag = 0 and H at lag = ?3 (with R for rainfall, and H for relative humidity; 1 lag = 15 d) and auto-regressive moving average terms for residuals. It appeared the western flower thrips was present all year round on the site but density started to increase when temperatures reached 15°C. Nevertheless, the density decreased before the mean temperature reached its maximum. Heavy rainfall, involving submergence of pupae or high relative humidity, conditions which are favorable to an entomopathogen, could explain this early decrease. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/559501/1/559501.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/ee/27.6.1437 10.1093/ee/27.6.1437 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=211387 info:eu-repo/semantics/altIdentifier/doi/10.1093/ee/27.6.1437 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/ee/27.6.1437 info:eu-repo/semantics/reference/purl/http://esa.publisher.ingentaconnect.com/content/esa/envent/1998/00000027/00000006/art00019 |
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H10 - Ravageurs des plantes H10 - Ravageurs des plantes Boissot, Nathalie Reynaud, Bernard Letourmy, Philippe Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
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The western flower thrips, Frankliniella occidentalis (Pergande), has been present on Reunion Island since 1987. The tomato spotted wilt virus, which is transmitted by F. occidentalis, was first observed on the island in 1991. Because of the strong threat to flower crops, we studied western flower thrips dynamics at a flower farm (900 m elevation) from 1993 to 1997. The population dynamics were monitored using sticky traps. The density of western flower thrips was studied through auto-correlograms and cross-correlograms with climatic data (temperature, relative humidity, rainfall). Thrips populations varied annually, typically due to temperature variation. Stepwise regression allowed us to fit a model of density increment including 2 climatic parameters: In (R) at lag = 0 and H at lag = ?3 (with R for rainfall, and H for relative humidity; 1 lag = 15 d) and auto-regressive moving average terms for residuals. It appeared the western flower thrips was present all year round on the site but density started to increase when temperatures reached 15°C. Nevertheless, the density decreased before the mean temperature reached its maximum. Heavy rainfall, involving submergence of pupae or high relative humidity, conditions which are favorable to an entomopathogen, could explain this early decrease. |
format |
article |
topic_facet |
H10 - Ravageurs des plantes |
author |
Boissot, Nathalie Reynaud, Bernard Letourmy, Philippe |
author_facet |
Boissot, Nathalie Reynaud, Bernard Letourmy, Philippe |
author_sort |
Boissot, Nathalie |
title |
Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
title_short |
Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
title_full |
Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
title_fullStr |
Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
title_full_unstemmed |
Temporal analysis of western flower thrips (Thysanoptera : Thripidae) population dynamics on Reunion Island |
title_sort |
temporal analysis of western flower thrips (thysanoptera : thripidae) population dynamics on reunion island |
url |
http://agritrop.cirad.fr/559501/ http://agritrop.cirad.fr/559501/1/559501.pdf |
work_keys_str_mv |
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