Effects of Aphid Prey on Larval Development and Mortality of Adalia bipunctata and Coccinella septempunctata (Coleoptera: Coccinellidae)

Abstract

Developmental time and mortality rate of Adalia bipunctata (L.) and Coccinella septempunctata L. (Coleoptera: Coccinellidae) were determined when feeding on five aphid species. Metopolophium dirhodum (Walker), Sitobion avenae (F.), Rhopalosiphum padi (L.), Hyalopterus pruni (Geoffr.) and Myzus cerasi F. (Homoptera: Aphididae) are widespread in Tekirdağ, Turkey. Tests were carried out in a controlled environmental chamber (25±1°C temperature, 65±5% relative humidity and 16 h light:8 h dark period). Developmental times for A. bipunctata and C. septempunctata larvae varied significantly depending on species of aphid prey (P<0.05). Development time (±S.E.) varied from 17.50±0.84 to 20.83±1.60 days for C. septempunctata and 16.7±0.76 to 20.7±1.03 days for A. bipunctata. Mortality of A. bipunctata (50%) and C. septempunctata (63%) were highest on H. pruni.

Keywords:

• Adalia bipunctata
• Coccinella septempunctata
• Metopolophium dirhodum
• Sitobion avenae
• Rhopalosiphum padi
• Myzus cerasi
• Hyalopterus pruni prey
• development
• mortality rate

Acknowledgments

The authors would like to thank Dr. Ivo Hodek (Czech Republic) for pertinent comments on the manuscript and concerning interesting literature and to Professor Muhsin Doğaroğlu, Tekirdağ, Turkey for language improvements.