Viral-enhancing activity of an optical brightener for Spodoptera littoralis (Lepidoptera : Noctuidae) nucleopolyhedrovirus

Toprak U., Susurluk H., Oktay Gurkan M.

BIOCONTROL SCIENCE AND TECHNOLOGY, cilt.17, sa.4, ss.423-431, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 17 Sayı: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1080/09583150701213737
  • Dergi Adı: BIOCONTROL SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.423-431
  • Anahtar Kelimeler: Spodoptera littoralis, baculovirus, optical brightener, NUCLEAR POLYHEDROSIS-VIRUS, GYPSY-MOTH LEPIDOPTERA, LYMANTRIIDAE BACULOVIRUS, PSEUDOPLUSIA-INCLUDENS, FLUORESCENT BRIGHTENER, INSECTICIDAL ACTIVITY, ARMYWORM LEPIDOPTERA, COTTON, ENHANCEMENT, PROTECTANTS
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

The effect of an optical brightener on the insecticidal activity of a Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae) nucleopolyhedrovirus (SpliNPV) were examined in three instars of S. littoralis. LD50 values of the SpliNPV were reduced from 33 to < 5, 73 to 5.7 and 342 321 to 288 412 occlusion bodies for second, third and fourth instars, respectively, by the addition of 1% Tinopal UNPA-GX. Relative potencies were > 66, 12.8, and 1.2 for second-. third- and fourth-instar S. littoralis larvae, respectively. Relative mortality between the treatments with and without the brightener decreased from third- to fourth-stage larvae. In terms of speed of kill, the ST50 values of the baculovirus-infected larva were reduced from 210 to 159, 213 to 147, and 207 to 165 h for second-, third- and fourth-instar larvae, respectively, by the addition of the optical brightener at biologically equivalent doses.