rape

synonym: Brassica napobrassica, napus subsp. oleifera, oleifera

organ parasitic mode stage note taxonomic group parasite
stem borer larva Curculionidae Ceutorhynchus picitarsis
stem borer Curculionidae Ceutorhynchus sulcicollis
stem borer Curculionidae Aulacobaris coerulescens
leaf miner Agromyzidae Chromatomyia horticola
flower gall Cecidomyiidae Gephyraulus raphanistri
root collar gall Curculionidae Ceutorhynchus assimilis
leaf vagrant Aphididae Macrosiphum euphorbiae
stem miner Agromyzidae Ophiomyia alliariae
fruit borer Curculionidae Ceutorhynchus obstrictus
leaf vagrant summer generation Aphididae Aphis fabae fabae
root vagrant summer generation Aphididae Smynthurodes betae
systemic borer Anguinidae Ditylenchus dipsaci
fruit gall Cecidomyiidae Dasineura napi
flower gall Cecidomyiidae Contarinia nasturtii
leaf down Erysiphales Erysiphe cruciferarum
leaf down Peronosporales Hyaloperonospora brassicae
leaf gall Aphididae Brevicoryne brassicae
leaf gall Curculionidae Ceutorhynchus chalibaeus
leaf gall Curculionidae Ceutorhynchus leprieuri
leaf gall Meloidogynidae Meloidogyne artiellia
leaf miner Agromyzidae Chromatomyia horticola
leaf miner Agromyzidae Liriomyza brassicae
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Agromyzidae Phytomyza rufipes
leaf miner Curculionidae Ceutorhynchus minutus
leaf miner Drosophilidae Scaptomyza flava
leaf miner Plutellidae Plutella xylostella
leaf miner Tortricidae Cnephasia incertana
leaf pustule Albuginales Albiginaceae Albugo candida
stem borer Curculionidae Ceutorhynchus napi
stem borer Curculionidae Ceutorhynchus pallidactylus
stem gall Rhizobiales Agrobacterium tumefaciens
root gall Meloidogynidae Meloidogyne hapla
root gall Meloidogynidae Meloidogyne naasi
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Aphididae Myzus ascalonicus
leaf vagrant rarely Aphididae Lipaphis erysimi

Organ

the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.

PARASITIC MODE

borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.

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IMPORTANT

The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.

 

mod 27.vi.2019