Laboratory evaluation of the effectiveness of the entomopathogen; Isaria farinosa, on citrus mealybug, Planococcus citri

Demirci F., Mustu M., Kaydan M. B., Ulgenturk S.

JOURNAL OF PEST SCIENCE, cilt.84, sa.3, ss.337-342, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 84 Sayı: 3
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1007/s10340-011-0350-9
  • Dergi Adı: JOURNAL OF PEST SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.337-342
  • Anahtar Kelimeler: Citrus mealybug, Isaria farinosa, Entomopathogen, Planococcus citri, FUNGUS NEOZYGITES-FUMOSA, BEAUVERIA-BASSIANA, CASSAVA MEALYBUG, PSEUDOCOCCIDAE, FUMOSOROSEA, HEMIPTERA, HOMOPTERA, PESTS
  • Çukurova Üniversitesi Adresli: Hayır

Özet

Citrus mealybug Planococcus citri (Risso) (Hemiptera: Pseudococcidae) is one of the main pests on citrus trees. Biological control of the pest is based on the release of hymenopterous parasitoids and coccinellid predators at present. The effectiveness of entomopathogen fungus Isaria farinosa (Holmsk.) Fries ([Sordariomycetes: Hypocreales] (Syn: Paecilomyces farinosus), as an alternative biological control agent on citrus mealybug, was investigated using four different inoculum densities and different relative humidities (RH). The entomopathogen caused 89.39% mortality in ovisacs, 84.07% mortality in second larval stage, 84.53% mortality in adult females, and 78.71% mortality in first larval stage at 95% RH and at 1 x 10(8) conidia ml(-1) inoculum concentration. Percent mortalities were between 50 and 60 in ovisac, first and second larval stage at 95% RH and at 1 x 10(7) conidia ml(-1). Percent mortality was decreased parallel to the decrease in humidity level and inoculum densities; however, the fungus caused significant infection in 70% and 80% RH. These results demonstrated that the effectiveness of the entomopathogen is promising for biocontrol of citrus mealybug.