Knopper gall on acorn

Knopper gall on acorn

C001/6281 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.4MB

Downloadable file size: 1.7MB

Price image Pricing

Please login to use the price calculator


Caption: Knopper gall on acorn. Close-up of two acorns from an Pedunculate Oak (Quercus robur) tree. The lower one has been infected by the parasitic larva of a gall wasp (Andricus quercuscalicis), causing the formation of a knopper gall (growth, spiky, lower centre). The larva develops within a hard inner gall, which provides it with both food and protection. Parthenogenetic (all female) adults emerge from the galls during the following spring.

Release details: Model release not required. Property release not required.

Keywords: acorn, acorns, andricus quercuscalicis, animal, arthropod, arthropods, biological, biology, botanical, botany, condition, deciduous, disease, diseased, disorder, english oak, entomology, fagaceae, fauna, flora, fruit, fruits, gall wasp, growth, infected, infection, insect, invertebrate, invertebrates, knopper gall, larva, larval, leaf, leaves, life-cycle, life-stage, nature, out-growth, outgrowth, parasite, parasitic, parasitised, parthenogenesis, parthenogenetic, parthenogenic, parts, pedunculate oak, plant, quercus pedunculata, quercus robur, reproduction, reproductive part, spikey, spiky, structure, structures, tree, wasp, wildlife, zoological, zoology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.