LARGE INFESTATION OF CHESTNUTS BY CYDIA MOTHS IN MADEIRA ISLAND: MONITORIZATION OF CYDIA SPLENDANA POPULATIONS WITH PHEROMONE LURES

D. Aguin-Pombo, A. Arraiol, A.M. Franquinho Aguiar, E. Freitas, G. Angeli
Chestnut fruits represent an important economic income for local populations of Madeira Island. In the last years, chestnut fruits have been heavily attacked by an unknown moth species. Since Cydia splendana—a carpophagous species common to chestnut fruits—has been reported to Madeira, three different commercial pheromones lures (Agrisense, Tomagro and Oecos) have been used to monitorize this species in three different localities. The subtropical conditions on this island seem to affect the phenology of populations. Large numbers of C. splendana were sampled from August to mid November, but the period of flight activity was longer than in continental areas. The peak of flight activity was comparatively late from the end of August to beginning of September. Oecos was the most efficient pheromone lure in the three localities studied. The infestation rates of fruits were large and varied from 13 to 40% but coloration and chetotaxia of larvae did not correspond to C. splendana. The variation observed in larvae in these structures can represent either patterns of intraspecific variation or the co-existence of different species. Further morphological studies should be done.
Aguin-Pombo, D., Arraiol, A., Franquinho Aguiar, A.M., Freitas, E. and Angeli, G. (2008). LARGE INFESTATION OF CHESTNUTS BY CYDIA MOTHS IN MADEIRA ISLAND: MONITORIZATION OF CYDIA SPLENDANA POPULATIONS WITH PHEROMONE LURES . Acta Hortic. 784, 175-180
DOI: 10.17660/ActaHortic.2008.784.27
https://doi.org/10.17660/ActaHortic.2008.784.27
Madeira, chestnuts, infestation, pheromone lures, Cydia splendana
English

Acta Horticulturae