Infestation index of Drosophila suzukii (Diptera: Drosophilidae) in small fruit in southern Brazil / Índice de infestação de Drosophila suzukii (Diptera: Drosophilidae) em pequenas frutas no sul do Brasil
Arq. Inst. Biol
;
87: e0432018, 2020. tab, graf
Artículo
en Inglés
| LILACS, VETINDEX
| ID: biblio-1118052
ABSTRACT
The spotted-wing drosophila, Drosophila suzukii Matsumura, is considered the main insect pest of small fruit in the world. Identifying susceptible hosts is essential to develop management strategies. The aim of this study was to verify the level of D. suzukii infestation in blackberry, blueberry, strawberry, cattley guava and Surinam cherry fruits cultivated in the southern region in Brazil, and to determine the infestation index (II) per fruit. The studies were carried out during two harvests (2015/16 and 2016/17) in three areas with organic cultivation of small fruit. The highest level of D. suzukii natural infestation was observed in blackberry (40 to 65% infestation), and strawberry (approximately 30% infestation) fruits. In contrast, blueberries were less preferred (< 7% infestation). For native fruit of the region (cattley guava and Surinam cherry), it was also verified infestation of the fly, demonstrating they are hosts for multiplication in the off-season periods of the other crops. In relation to II, blackberry and Surinam cherry provided a higher average number of insects per gram of fruit (≈ 1.6 adults of D. suzukii). In contrast, blueberries and cattley guava had the lowest insect ratio per gram of fruit (≈ 0.7 adults per gram). The period between late spring to mid-autumn was considered ideal for the pest occurrence in the field. The knowledge of natural infestation levels is essential for understanding the behavior of the pest in the field, which will assist in the design of management strategies.(AU)
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Drosophila
/
Frutas
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Arq. Inst. Biol
Año:
2020
Tipo del documento:
Artículo
Institución/País de afiliación:
Empresa Brasileira de Pesquisa Agropecuária/BR
/
Universidade Federal de Pelotas/BR
Similares
MEDLINE
...
LILACS
LIS