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| Titel: |
Viral-enhancing activity of an optical brightener for Spodoptera littoralis (Lepidoptera: Noctuidae) nucleopolyhedrovirus |
| Auteur: |
Toprak, Umut Susurluk, Hilal Gurkan, M. Oktay |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 17 (2007) nr. 4 pagina's 423-431 |
| Jaar: |
2007 |
| Inhoud: |
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. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 10 gevonden artikelen
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