Assessing the Overwintering and Impact of Augmentorium on Populations of the Samba Wasp (Ganaspis kimorum) in Maine
Notice bibliographique
Résumé
The invasive spotted-wing drosophila (Drosophila suzukii) is a significant global pest of soft-skinned fruit, causing substantial economic losses due to its ability to oviposit in ripening fruit. Unlike other Drosophila species, D. suzukii females possess a serrated ovipositor, allowing them to lay eggs in intact fruit, leading to rapid infestations and increased management challenges. Originally native to Asia, D. suzukii was first detected in North America in 2008 in California and rapidly spread across the United States and Canada, becoming a serious agricultural threat. Traditional control methods rely heavily on chemical insecticides, which have contributed to resistance development and raised environmental concerns. As a result, sustainable management strategies, including biological control, have gained increasing attention. One of the most promising biocontrol agents for D. suzukii is Ganaspis kimorum, a larval parasitoid native to Asia with high host specificity. Based on the quarantine studies in Switzerland and California, including the host specificity studies of the G1 group, a petition submitted to USDA APHIS was approved for the release of the G. kimorum in the US. Overwintering is a critical phase in the life cycle of G. kimorum, as its ability to survive cold temperatures determines its long-term establishment and effectiveness as a biological control agent against D. suzukii. Successful establishment of G. kimorum in new environments depends on its overwintering survival and effective augmentation in agricultural landscapes. This study investigates the overwintering potential of G. kimorum in Maine through field and laboratory experiments assessing the impact of temperature, microhabitat conditions, and exposure duration. Field trials with soil-buried diapausing revealed significant declines, however low and persistent survival was observed out to 120 days in the field. To enhance G. kimorum populations, we evaluated the efficacy of augmentorium cages—tent-like structures designed to sequester D. suzukii-infested fruit while allowing parasitoid escape. Mesh trials determined the optimal mesh size to maximize G. kimorum emergence while preventing D. suzukii escape. Augmentorium field trials demonstrated significant temporal variation in parasitism rates, with peak parasitism occurring early in the season. Additionally, fruit collection outside the cage from untreated blueberry fields confirmed the presence of G. kimorum, suggesting that augmentorium cages successfully released the parasitoid and contributed to increasing its population in the field. Temperature differences between outside and the augmentorium cages also suggested microclimatic effects on parasitoid survival and efficacy. By integrating overwintering ecology with augmentorium-based biocontrol, this study provides critical insights into the long-term sustainability of G. kimorum as a biological control agent. These findings inform integrated pest management (IPM) strategies aimed at reducing D. suzukii populations while supporting beneficial parasitoid communities in temperate agroecosystems.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».