PLANT PROTECTION 1 – Pests, Diseases and Weeds

PLANT PROTECTION 1 – Pests, Diseases and Weeds
LIST OF SOME
SPECIES
Not known
in Australia
Often intercepted in
quarantine
Not known
in Australia
Endangered
Many native species
are endangered
COMMON NAME SCIENTIFIC NAME HOST RANGE
(not exhaustive)
SNAILS
Brown garden snail,
common garden snail
(up to 25 mm long)
Green snail (WA)
(up to 25 mm across)
Pointed or conical snail
(up to 18 mm long)
Small pointed snail
(8-10 mm long)
Sand dune snail, white
Italian snail
(up to 24 mm across)
Vineyard snail,
common white snail
(up to 20 mm across)
White bradybaena
snails
Giant African snail
(about 80-200 mm long)
Helix aspersa
syn. Cantareus aspersus
Wide range of all types of
plants. Brought to Australia
because people wanted to eat it.
Commercial snail farms could be
established in Australia
H. aperta (WA only) Ornamentals, vegetables, crops
Cochlicella acuta Improved pastures and legume
crops, citrus, seedling crops,
cereal grains at harvest
C. barbara Pastures with perennial clovers,
seeding crops cereal grains at
Theba pisana
probably the best known pest
of agriculture in Australia
Cernuella virgata
Bradybaena similaris
(up to 15.5 mm across)
Achatina fulica
harvest, young vines, lucerne
Emerging seedling crops, climbs
cereal stalks, clogs machinery,
contaminates grain, dried fruit,
clover, beans, oil seeds, vines
Emerging seedling crops,
especially barley, field peas,
contaminate grain, clog
machinery, organic matter
Pest of hanging fruit such as
citrus
Major pest of vegetable &
horticultural crops
Golden apple snail Pomacea caniculata Mainly an agricultural pest,
especially of rice.
NATIVE SNAILS
Various species
Placostylus bivaricosus
Thersiles mitchellae
Many Australian land snails feed
on fungi. Native snails are mostly
restricted to natural habitats
Cumberland land snail Meridolum corneovirens Like many other native land
snails it feeds on fungi
PREDATORY SNAILS
Many native species Strangesta capillacea A common garden snail
SLUGS
Black-keeled slug Milax gagates Ornamentals, fruit, vegetables
Keeled slug M. budopeskensis Ornamentals, fruit, vegetables
Brown slug Deroceras parnormitanum Ornamentals, fruit, vegetables,
pasture
Reticulated slug
(up to 25 mm long)
Great striped garden slug
(up to 20 cm long)
D. reticulatum
The most important pest slug
Limax maximus
Wide range of leafy plants,
seedlings, crops, pastures.
Rotting plant material, also
garden plants, rotting pet food
Great yellow slug Lehmannia flava Decaying plant and other material
PREDATORY SLUGS
Native spp. mostly in
natural habitats
Atopos australe
Thought to prey on other slugs
Introduced species Testacella haliotidea Preys on earthworms
Fig. 130. Common garden snail
(Helix aspersa). Left: Adult snails on the
trunk of a citrus tree. Photo NSW Dept. of
Industry and Investment. Centre & Right:
Damage to cabbage and kangaroo paw.
PhotoCIT, Canberra (P.W.Unger).
230 Snails and slugs