Spangle galls on a leaf of Quercus robur
Numéro d’image : 13297798
| Spangle galls on the underside of leaves of pedunculate oak, Quercus robur. The picture, taken in late Summer, shows common spangle galls caused by the cynipid gall wasp Neuroterus quercusbaccarum. A gall is produced when a female wasp lays an egg inside a leaf. The plant reacts by forming a cavity, before the larva hatches. The larva crawls into the cavity and begins to feed. The gall grows out through the leaf surface, reaching the stage shown here about six weeks after the larva hatched. By late Autumn the circular discs that enclose the central cavity, become woody. The galls fall to the ground, where they serve to protect the larva over the winter. The larva emerges in the following Spring | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
| Taille de l’image : | 3468 px × 5212 px |
| Model Release : | Non requis |
| Restrictions : | - |
Prix pour cette image À partir de 45 €
Produit vendu
(Calendrier, Carte postale, Carte de vœux, Impression sur textile, Packaging etc)
À partir de 45 €
Usage commercial
(Affichage, Annonce presse, Annonce TV, Carte, Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 45 €
Éditorial
(Digital, Journal, Livre, Livre pratique, Magazine, Télévision etc)
À partir de 60 €
Usage non-commercial
(Digital - hors rés. sociaux, Digital - rés. sociaux etc)
À partir de 120 €