Biological aspects of Chrysoperla externa (Hagen) preying on Oligonychus ilicis (McGregor) and Planococcus citri (Risso)

Authors

  • Marçal Pedro Neto Universidade Federal de Lavras - UFLA
  • César Freire Carvalho Universidade Federal de Lavras - UFLA
  • Paulo Rebelles Reis EPAMIG-CTSM/EcoCentro
  • Lenira Viana Costa Santa-Cecília IMA/EPAMIG-CTSM/EcoCentro
  • Brígida Souza Universidade Federal de Lavras - UFLA
  • Eliana Alcantra Universidade Federal de Lavras - UFLA
  • Rogério Antônio Silva EPAMIG-CTSM/EcoCentro

DOI:

https://doi.org/10.25186/cs.v3i2.78

Keywords:

lacewing, coffee-red-mite, mealybug, coffee plant, Coffea arabica

Abstract

The red mite Oligonychus ilicis (McGregor, 1917) and the mealybug Planococcus citri (Risso, 1813) are considered important pests of the coffee plant (Coffea arabica L.), causing yield losses. The predator Chrysoperla externa (Hagen, 1861) is associated with those pests. The objective of this work was to evaluate the development of the immature and adult phases of the predator fed, in the immature phase, on those coffee plant pests and their effects on both fecundity and survival rate of larvae, pupae and eggs in laboratory. The bioassays were carried out in the laboratory of the EcoCentro/CTSM-EPAMIG, Lavras, MG, at 25 ± 1ºC, 70 ± 10% of relative humidity and 12 hours´ photophase. The experimental design was completely randomized with 10 treatments representing the possible combinations of the diets: Anagasta kuehniella (Zeller, 1879) eggs as the standard food, mites and mealybugs, with 30 replicates. The preys were supplied either singly or associated between each other in each instar or alternated in the instars with eggs of A. kuehniella. Significant alterations occurred in weight, larval and pupal survival, when the larvae were fed with only one prey type or with the combination of mites plus mealybugs, compared to eggs of A. kuehniella.  It was demonstrated that O. ilicis e P. citri singly   supplied to larvae of C. externa, is not the food adequate for the development of larvae. Only the red mite as a food caused 100% of death of the lacewing’s larvae in the second instar.

Author Biographies

Marçal Pedro Neto, Universidade Federal de Lavras - UFLA

César Freire Carvalho, Universidade Federal de Lavras - UFLA

D.Sc., Professor Adjunto do Departamento Entomologia – Universidade Federal de Lavras/UFLA – Caixa Postal 3037 – 37200-000 Lavras, MG

Paulo Rebelles Reis, EPAMIG-CTSM/EcoCentro

EPAMIG-CTSM/EcoCentro – Caixa Postal 176 – 37200-000 Lavras, MG, Pesquisador do CNPq

Lenira Viana Costa Santa-Cecília, IMA/EPAMIG-CTSM/EcoCentro

IMA/EPAMIG-CTSM/EcoCentro, – Caixa Postal 176 – 37200-000 Lavras, MG, Bolsista da FAPEMIG

Brígida Souza, Universidade Federal de Lavras - UFLA

D.Sc., Professor Adjunto do Departamento Entomologia – Universidade Federal de Lavras/UFLA – Caixa Postal 3037 – 37200-000 Lavras, MG

Eliana Alcantra, Universidade Federal de Lavras - UFLA

Mestranda do Departamento Entomologia – Universidade Federal de Lavras/UFLA – Caixa Postal 3037 – 37200-000 Lavras, MG

Rogério Antônio Silva, EPAMIG-CTSM/EcoCentro

EPAMIG-CTSM/EcoCentro, – Caixa Postal 176 – 37200-000 Lavras, MG, Bolsista da FAPEMIG

Published

2008-12-27

Issue

Section

Articles