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Neozoa
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Neozoa (invasive species) are animal species that move into new areas through human activities and establish themselves there. This can happen in a variety of ways, such as the exotic pet trade, the release of animals from captivity, or the unwanted introduction of species via ships or other means of transport. Neozoa can include both terrestrial and aquatic species.
The introduction of neozoa into new ecosystems can have far-reaching ecological and cultural consequences. On the one hand, they can threaten native species, either through direct competition for resources or through the transmission of diseases. On the other hand, they can also change human perceptions of nature and wildlife by introducing new species into landscapes that did not previously exist.
The management of invasive species therefore requires careful monitoring and management measures to minimize their impact on biodiversity and human health. This may include controlling invasive species, restoring habitats and raising public awareness of the risks and consequences of introducing neozoa.
Overall, neozoa illustrate the complex interactions between human activities, biological diversity, and cultural practices. Their occurrence and spread are closely linked to global trade and transport flows and underline the importance of an integrated and coordinated approach to the protection and conservation of ecosystems worldwide.
This list shows species ordered by the proportion of observations marked as "introduced". The data is based on observations from iNaturalist users and therefore may contain inaccurate information.
The percentage value shown implies how many observations were made outside the original distribution area.
Domestic horse
Equus ferus caballus
134 observations in the last 30 days
100% introduced
Chicken
Gallus gallus domesticus
227 observations in the last 30 days
100% introduced
Domestic cat
Felis catus
1,125 observations in the last 30 days
99.98% introduced
Giant African land snail
Lissachatina fulica
403 observations in the last 30 days
99.6% introduced
European fallow deer
Dama dama
128 observations in the last 30 days
99.41% introduced
Brown anole
Anolis sagrei
1,350 observations in the last 30 days
99.36% introduced
Cattle
Bos taurus
101 observations in the last 30 days
98.81% introduced
Domestic sheep
Ovis aries
74 observations in the last 30 days
97.22% introduced
Brown marmorated stink bug
Halyomorpha halys
1,261 observations in the last 30 days
96.4% introduced
Box tree moth
Cydalima perspectalis
49 observations in the last 30 days
96.17% introduced
Asian ladybeetle
Harmonia axyridis
5,740 observations in the last 30 days
95.79% introduced
House mouse
Mus musculus
90 observations in the last 30 days
95.73% introducedCommon pheasant
Phasianus colchicus
658 observations in the last 30 days
94.53% introducedDomestic duck
Anas platyrhynchos domesticus
702 observations in the last 30 days
94.26% introducedYak
Bos grunniens
14 observations in the last 30 days
94.2% introduced
Domestic dog
Canis lupus familiaris
402 observations in the last 30 days
92.59% introduced
Nutria
Myocastor coypus
336 observations in the last 30 days
88.21% introduced
Egyptian goose
Alopochen aegyptiaca
809 observations in the last 30 days
84.2% introduced
Domestic goat
Capra hircus
128 observations in the last 30 days
83.27% introduced
Llama
Lama glama
Seven observations in the last 30 days
81.73% introducedEuropean rabbit
Oryctolagus cuniculus
425 observations in the last 30 days
81.39% introduced
European honey bee
Apis mellifera
3,321 observations in the last 30 days
80.79% introduced
Domestic house spider
Tegenaria domestica
71 observations in the last 30 days
77.6% introduced
European paper wasp
Polistes dominula
271 observations in the last 30 days
74.73% introduced
Arion
Arion species
244 observations in the last 30 days
73.22% introduced
Common pill woodlouse
Armadillidium vulgare
1,239 observations in the last 30 days
70.32% introduced
Common earthworm
Lumbricus terrestris
94 observations in the last 30 days
70.2% introducedRock dove
Columba livia
3,489 observations in the last 30 days
65.6% introduced
Madagascar giant day gecko
Phelsuma grandis
32 observations in the last 30 days
62.83% introduced
Indian peafowl
Pavo cristatus
314 observations in the last 30 days
61.12% introduced
Garden snail
Cornu aspersum
1,486 observations in the last 30 days
56.63% introduced
Bathroom moth midge
Clogmia albipunctata
283 observations in the last 30 days
51.76% introduced
Leopard slug
Limax maximus
439 observations in the last 30 days
50.91% introduced
Common green bottle fly
Lucilia sericata
38 observations in the last 30 days
49.47% introducedShore crab
Carcinus maenas
285 observations in the last 30 days
47.36% introduced
Eurasian collared dove
Streptopelia decaocto
980 observations in the last 30 days
47.06% introduced
Jamaican field cricket
Gryllus assimilis
Five observations in the last 30 days
45.61% introduced
Housefly
Musca domestica
42 observations in the last 30 days
45.51% introduced
Common striped woodlouse
Philoscia muscorum
247 observations in the last 30 days
40.11% introduced
Seven-spot ladybird
Coccinella septempunctata
1,452 observations in the last 30 days
37.06% introduced
European garden spider
Araneus diadematus
1,112 observations in the last 30 days
36.08% introduced
Domestic guinea pig
Cavia porcellus
Seven observations in the last 30 days
35.94% introduced
Grove snail
Cepaea nemoralis
440 observations in the last 30 days
34.43% introduced
Common leopard gecko
Eublepharis macularius
Six observations in the last 30 days
32.73% introduced
European hornet
Vespa crabro
527 observations in the last 30 days
28.35% introduced
Dromedary
Camelus dromedarius
16 observations in the last 30 days
25.99% introducedSickle-bearing bush cricket
Phaneroptera species
319 observations in the last 30 days
24.67% introduced
Buff-tailed bumblebee
Bombus terrestris
415 observations in the last 30 days
24.52% introduced
Common crab spider
Xysticus cristatus
Seven observations in the last 30 days
22.71% introduced
Superworm
Zophobas atratus
Four observations in the last 30 days
22.58% introduced
Mute swan
Cygnus olor
1,498 observations in the last 30 days
21.73% introduced
Yellow mealworm beetle
Tenebrio molitor
One observation in the last 30 days
21.63% introduced
Human flea
Pulex irritans
Five observations in the last 30 days
20% introduced
Crane fly
Tipula species
43 observations in the last 30 days
16.2% introduced
Brown-tail moth
Euproctis chrysorrhoea
Three observations in the last 30 days
15.84% introduced
Devil's coach-horse beetle
Ocypus olens
259 observations in the last 30 days
14.05% introduced
Canada goose
Branta canadensis
2,380 observations in the last 30 days
13.58% introduced
Common wasp
Vespula vulgaris
222 observations in the last 30 days
9.86% introduced
Garden banded snail
Cepaea hortensis
85 observations in the last 30 days
8.34% introduced
Mallard
Anas platyrhynchos
4,481 observations in the last 30 days
8.15% introduced
Roman snail
Helix pomatia
97 observations in the last 30 days
5.68% introduced
Alpaca
Vicugna pacos
No observations in the last 30 days
5.56% introduced
Firebug
Pyrrhocoris apterus
522 observations in the last 30 days
4.61% introduced
Domestic silk moth
Bombyx mori
No observations in the last 30 days
4.55% introduced
Two-spot ladybird
Adalia bipunctata
211 observations in the last 30 days
3.85% introduced
Monarch butterfly
Danaus plexippus
4,032 observations in the last 30 days
3.48% introduced
Drugstore beetle
Stegobium paniceum
Eight observations in the last 30 days
2.77% introduced
Desert locust
Schistocerca gregaria
21 observations in the last 30 days
2.77% introduced
Two-spotted cricket
Gryllus bimaculatus
74 observations in the last 30 days
2.01% introduced
Corn snake
Pantherophis guttatus
88 observations in the last 30 days
1.79% introduced
Great house spider
Eratigena atrica
120 observations in the last 30 days
1.35% introduced
Flesh fly
Sarcophaga species
Four observations in the last 30 days
1.21% introduced
Sahara frog
Pelophylax saharicus
16 observations in the last 30 days
0.7% introduced
Dubia roach
Blaptica dubia
Six observations in the last 30 days
0.69% introduced
Hummingbird hawk-moth
Macroglossum stellatarum
171 observations in the last 30 days
0.56% introduced
Bactrian camel
Camelus bactrianus
Five observations in the last 30 days
0.41% introducedPicnic beetle
Glischrochilus quadrisignatus
Six observations in the last 30 days
0.26% introduced
Sac spider
Clubiona species
40 observations in the last 30 days
0.16% introduced
Garden bumblebee
Bombus hortorum
Four observations in the last 30 days
0.11% introduced
Rook
Corvus frugilegus
852 observations in the last 30 days
0.05% introduced
Sand lizard
Lacerta agilis
22 observations in the last 30 days
0.04% introduced
Forest cockroach
Planuncus tingitanus sensu lato
87 observations in the last 30 days
0.04% introduced