Displacement of Aphytis chrysomphali by Aphytis melinus, parasitoids of the California red scale, in the Iberian Peninsula

  • Juan Ramon Boyero Unidad de Entomología. Centro IFAPA de Churriana. Cortijo de la Cruz, 29140 Málaga
  • Jose Miguel Vela Unidad de Entomología. Centro IFAPA de Churriana. Cortijo de la Cruz, 29140 Málaga
  • Eva Wong Unidad de Entomología. Centro IFAPA de Churriana. Cortijo de la Cruz, 29140 Málaga
  • Carlos Garcia Ripoll Unidad de Entomología. Centro de Protección Vegetal y Biotecnología. IVIA. Ctra. Moncada-Náquera km 4,5. 46113 Moncada (Valencia)
  • Maria Jesús Verdú Unidad de Entomología. Centro de Protección Vegetal y Biotecnología. IVIA. Ctra. Moncada-Náquera km 4,5. 46113 Moncada (Valencia)
  • Alberto Urbaneja Unidad de Entomología. Centro de Protección Vegetal y Biotecnología. IVIA. Ctra. Moncada-Náquera km 4,5. 46113 Moncada (Valencia)
  • Pilar Vanaclocha Unidad de Entomología. Centro de Protección Vegetal y Biotecnología. IVIA. Ctra. Moncada-Náquera km 4,5. 46113 Moncada (Valencia)
Keywords: biological control, Aonidiella aurantii, climatic conditions, Encarsia perniciosi

Abstract

Parasitoids are the main natural enemies of the California red scale, Aonidiella aurantii (Maskell) and on occasion can regulate their populations. To increase their effectiveness, inoculative or augmentative releases of parasitoids are promoted. Previous to the implementation of any release strategy an important and necessary step is to acquire knowledge on the parasitoid fauna associated with this key phytophagous pest. Parasitoids were surveyed and quantified in Spanish citrus orchards between 2005 and 2009. Aphytis melinus DeBach (87.1%) resulted as the dominant species, followed by Aphytis chrysomphali (Mercet) (15.9%), Encarsia perniciosi (Tower) (2.4%) and Aphycus hederaceus (Westwood) (0.004%). Overall, higher levels of parasitism were recorded in fruit than in twigs. Scales in fruit were parasitized at similar levels by the different parasitoid species whereas E. perniciosi was more active in twigs. Data eventually reveal the recent displacement of A. chrysomphali by A. melinus. The implications of these results on the biological control of A. aurantii are discussed and this information will be useful in the decision of IPM strategies for this pest.

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Published
2014-02-20
How to Cite
Boyero, J. R., Vela, J. M., Wong, E., Garcia Ripoll, C., Verdú, M. J., Urbaneja, A., & Vanaclocha, P. (2014). Displacement of Aphytis chrysomphali by Aphytis melinus, parasitoids of the California red scale, in the Iberian Peninsula. Spanish Journal of Agricultural Research, 12(1), 244-251. https://doi.org/10.5424/sjar/2014121-5266
Section
Plant protection