Photosensitization of Eretmapodites quinquevittatus Theobald (Diptera: Culicidae) eggs and larvae with Photofrin II.

Abstract

The susceptibility of Eretmapodites quinquevittatus eggs and larvae to photosensitization with Photofrin II (PII) was determined. Hatching rates of eggs (5 min to 2 h after oviposition with no PII exposure) exposed to solutions of PII (90 micrograms/ml) in the dark for 12 h, before photoirradiation for 72 h. were very similar to those of untreated controls (P > 0.05). Hatching rates of eggs (5 min after oviposition with no PII exposure) exposed to PII (90 micrograms/ml) and photoirradiated simultaneously for 72 h were significantly lower than for untreated controls (P < 0.05). Permeability of the egg to PII diminishes as the eggs age and the serosal cuticle becomes mature. Eretmapodites quinquevittatus larvae were killed after exposure to PII (90 micrograms/ml) that had been previously photoirradiated for 1-11 days. The effect was age and size related. First-instar to early 3rd-instar larvae were killed when exposed to PII (90 micrograms/ml) with no photoirradiation.

• Authors: A M Helleck, W K Hartberg, R S Baldridge
• Journal: Journal of the American Mosquito Control Association (J Am Mosq Control Assoc) Vol. 13 Issue 3 Pg. 292-5 (Sep 1997) ISSN: 8756-971X [Print] United States
• PMID: 9383775 (Publication Type: Journal Article)

Chemical References

• Photosensitizing Agents
• Dihematoporphyrin Ether

Topics

• Animals
• Dihematoporphyrin Ether
• Diptera (growth & development, radiation effects)
• Female
• Larva
• Light
• Photosensitizing Agents