| The survival prediction of Amblyseius swirskii fed on pollen grains of ornamental roses |
| Paper ID : 1082-IPCA5 (R1) |
| Authors |
|
Nima Sedaghatzadeh1, Shima Rahmani *2 1Department of Plant Protection, Science and Research Branch, Islamic Azad University, Tehran, Iran. 2Department of Plant Protection, Science and Research Branch, Islamic Azad University |
| Abstract |
| Pollen grains from Rosaceae plants have been shown to promote the survival and development of generalist phytoseiid predatory mites, such as Amblyseius swirskii Athias-Henriot. This study examined the effect of five ornamental roses’ pollen, including China rose, Damask rose, Avalanche rose, Iceberg rose, and Samurai rose on the age-stage life expectancy of this mite. The experiments were started with the cohorts of 24-h eggs in every treatment and conducted under controlled conditions at a temperature of 25 ± 2°C, with a relative humidity of 60 ± 10% and a photoperiod of 16 hours. In the control group, the mites were fed eggs and immature stages of Tetranychus urticae Koch. Results indicated that newly laid eggs of A. swirskii fed on Damask and Samurai rose pollen were likely to survive for 39.1 and 39.65 days, respectively. This value for the mites that preyed on T. urticae was 37.96 days. Those mites’ eggs on day 0 in the treatments of China rose, Avalanche rose, and Iceberg rose pollens were expected to survive 36, 31.6, and 36 days, respectively. In all treatments, the phytoseiid mites (both sexes) lived for 46-53 days. The females fed on Samurai and Avalanche rose pollen grains emerged on the 6th day with a life expectancy of 33.64 and 28.29 days, respectively. However, in the treatments of China rose, Damask rose, Iceberg rose pollens, and T. urticae, the females emerged on the 5th day, and this value was assessed as 35.47, 36.68, 35.47, and 31.33 days, respectively. It was concluded that all ornamental roses’ pollens were appropriate for the survival and development of A. swirskii. These pollen grains can be promising candidates for mass rearing of the predator or alternative food while released into the greenhouses or fields. |
| Keywords |
| life expectancy, predatory mite, Phytoseiidae, diet, Rosaceae |
| Status: Abstract Accepted |
