Insecta, Homoptera, Aphididae .
Description, Biology, Life Cycle, Damage, Common Names, Images
Holocyclic, dioecious, aphid with peach or plum) (*) as primary hosts. Secondary hosts are mainly annual herbaceous plants; in southern areas, parthogenetic females overwintering on their secondary hosts.
- The biology of M. persicae varies with climatic conditions, especially temperature. Fertility drops rapidly at temperatures over 30°C, and in glasshouses, individuals disperse.
- Longevity of adults: 3 months at 5°C, 10 days at 25°C.
- Longevity of nymphs: 21 days at 10°C, 7 days at 25°C.
- Average fertility: 80 nymphs per female (wingless forms lay more eggs than winged forms).
(in temperate areas) (*) :.
- Winter eggs hatch in April, giving rise to the fundatrix, a viviparous parthenogenetic wingless female.
- The fundatrix produces ca. 40 nymphs which become either winged or wingless adults.
- After 3 generations, only winged forms are produced, which fly to secondary host plants (because of the plant's physiological state and of intraspecific competition): primary host plants are without aphids from 15th May or 10th June according to climatic conditions.
- Several generations of viviparous parthenogenetic females (both winged and wingless) are produced successively on the secondary host plants.
- Sexuparous winged forms appearing from early September to late November fly back onto the primary host. They give birth to sexual females.
- At the same time, males are produced on the secondary host plants.
- Mating takes place in late October.
- Winter eggs are deposited at the bases of buds. They hatch in April.
Because M. persicae is a sap-feeding insect, it causes both direct (leaf curling) (*) and indirect damage (mainly as vector of viruses such as cucumber virus I, lettuce mosaic virus (LMV)). In glasshouses, it can transmit both viruses to various plant species (melon, marrow, tomato, egg plant, red pepper) and to wild plants which will act as reservoirs.
When aphids invade from outside, several foci of attack may result in an averall infestation.
This very polyphagous aphid can attack almost all protected crops. In the fields, it can damage rape, potato, cabbage, spinach, lettuce, chicory and also peach.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.