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QuantiPest

Natural enemies of the rosy apple aphid

This page presents some of the natural enemies of the rosy apple aphid.

Syrphids

The larvae of Diptera (see pictures below) are predators of aphids at all stages of their development. They are very mobile and can consume 250 to 400 aphids in 8-15 days during their activity period, which makes them very efficient beneficials (IOBC, 1974). Females lay from 500 to several thousand eggs, isolated among the colonies of aphids (Rasplus, 1995).

Adults  are living on flowers and their high mobility allows a rapid colonization of the orchard.

They are important predators of aphids, able to limit or even control the aphid populations without intervention of other natural enemies.

Coccinellids

The adult and the larva of Adalia bipunctata (L.) (two-spot ladybird) are specific predators of aphids in shrubby vegetation. They are important predators of aphids, able to limit or even control the aphid populations without intervention of other natural enemies.

Chrysopids

The larvae of chrysopids are polyphagous predators of aphids and can consume up to 500 aphids during their development stage, which lasts 15-20 days. Eggs are laid in clusters, or separately at the end of a thin pedicel.

Chrysopids are important predators of aphids, able to limit or even control the aphid populations without intervention of other natural enemies.
Depending on the species, adults feed on nectar and other sugary liquids (Chrysopa carnea Stephens) or are predators that also feed on aphids (Chrysopa septempunctata WESM., Chrysopa formosa Brauer) (IOBC, 1974).

Braconids

Much of the aphid parasitoids are Hymenoptera of the family Braconidae. Their most active period corresponds to the rosy apple aphid infestation peak. They are exclusive solitary endoparasites of aphids. At the end of the development stage, the larva spins a cocoon inside the intact integument of its host (mummy) (IOBC, 1974).

The efficiency of parasitoids in an open environment is still poorly documented (Viggiani, 2000), notably since they are also the hosts of hyperparasitoids , which limits the number of annual generations of primary parasitoids.

See also

  • Viggiani, G. (2000). The role of Hymenoptera in integrated pest management in fruit orchards. Crop Protection, 19, 665-668.
  • Rasplus, J.Y. (1995). Diversité des arthropodes auxiliaires. ANPP. Association Nationale pour la Protection des Plantes. Journée d'€™information sur les auxiliaires entomophages, Valence, 15 novembre 1995.
  • OILB/SROP. Organisation Internationale de Lutte Biologique contre les Animaux et les Plantes nuisibles. Section régionale Ouest Paléarctique. (1974). Les organismes auxiliaires en verger de pommiers. Brochure n°3. OILB/SROP. Wageningen, Pays-Bas. 242 p.

Rosy apple aphid