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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
142 observations in the last 30 days
100% introduced
Domestic cat
Felis catus
990 observations in the last 30 days
99.99% introduced
Cattle
Bos taurus
88 observations in the last 30 days
99.82% introduced
European fallow deer
Dama dama
52 observations in the last 30 days
99.65% introduced
Giant African land snail
Lissachatina fulica
325 observations in the last 30 days
99.56% introduced
Brown anole
Anolis sagrei
1,019 observations in the last 30 days
99.04% introduced
Asian ladybeetle
Harmonia axyridis
2,507 observations in the last 30 days
96.78% introduced
Brown marmorated stink bug
Halyomorpha halys
573 observations in the last 30 days
95.95% introduced
Domestic sheep
Ovis aries
53 observations in the last 30 days
95.77% introduced
House mouse
Mus musculus
89 observations in the last 30 days
95.58% introduced
Box tree moth
Cydalima perspectalis
12 observations in the last 30 days
94.68% introduced
Domestic dog
Canis lupus familiaris
355 observations in the last 30 days
94.1% introduced
Nutria
Myocastor coypus
232 observations in the last 30 days
88.18% introduced
Llama
Lama glama
Nine observations in the last 30 days
86.45% introduced
Domestic goat
Capra hircus
95 observations in the last 30 days
84.68% introduced
European honey bee
Apis mellifera
2,514 observations in the last 30 days
82.75% introduced
Egyptian goose
Alopochen aegyptiaca
602 observations in the last 30 days
80.31% introduced
European paper wasp
Polistes dominula
148 observations in the last 30 days
78.41% introduced
Domestic house spider
Tegenaria domestica
24 observations in the last 30 days
75.5% introduced
Arion
Arion species
101 observations in the last 30 days
70.14% introduced
Common earthworm
Lumbricus terrestris
52 observations in the last 30 days
68.28% introduced
Indian peafowl
Pavo cristatus
253 observations in the last 30 days
63.86% introduced
Madagascar giant day gecko
Phelsuma grandis
21 observations in the last 30 days
60.89% introduced
Common pill woodlouse
Armadillidium vulgare
398 observations in the last 30 days
57.63% introduced
Garden snail
Cornu aspersum
770 observations in the last 30 days
56.25% introduced
Bathroom moth midge
Clogmia albipunctata
185 observations in the last 30 days
53.5% introduced
Eurasian collared dove
Streptopelia decaocto
782 observations in the last 30 days
51.36% introduced
Domestic guinea pig
Cavia porcellus
13 observations in the last 30 days
49.04% introduced
Common green bottle fly
Lucilia sericata
16 observations in the last 30 days
48.35% introduced
Leopard slug
Limax maximus
245 observations in the last 30 days
47.97% introduced
Jamaican field cricket
Gryllus assimilis
Five observations in the last 30 days
46.15% introduced
Housefly
Musca domestica
27 observations in the last 30 days
44.79% introduced
Seven-spot ladybird
Coccinella septempunctata
692 observations in the last 30 days
41.83% introduced
Common leopard gecko
Eublepharis macularius
Three observations in the last 30 days
40% introduced
European garden spider
Araneus diadematus
348 observations in the last 30 days
36.48% introduced
Grove snail
Cepaea nemoralis
156 observations in the last 30 days
34.84% introduced
European hornet
Vespa crabro
136 observations in the last 30 days
32.14% introduced
Dromedary
Camelus dromedarius
14 observations in the last 30 days
27.67% introduced
Common striped woodlouse
Philoscia muscorum
203 observations in the last 30 days
27.02% introduced
Buff-tailed bumblebee
Bombus terrestris
312 observations in the last 30 days
23.27% introduced
Mute swan
Cygnus olor
947 observations in the last 30 days
22.86% introduced
Brown-tail moth
Euproctis chrysorrhoea
Five observations in the last 30 days
21.14% introduced
Yellow mealworm beetle
Tenebrio molitor
Eight observations in the last 30 days
17.53% introduced
Common crab spider
Xysticus cristatus
Ten observations in the last 30 days
16.16% introduced
Sickle-bearing bush cricket
Phaneroptera species
121 observations in the last 30 days
15.96% introduced
Crane fly
Tipula species
39 observations in the last 30 days
15% introduced
Devil's coach-horse beetle
Ocypus olens
88 observations in the last 30 days
12.92% introduced
Canada goose
Branta canadensis
2,011 observations in the last 30 days
12.59% introduced
Mallard
Anas platyrhynchos
4,333 observations in the last 30 days
10.28% introduced
Common wasp
Vespula vulgaris
101 observations in the last 30 days
7.49% introduced
Garden banded snail
Cepaea hortensis
33 observations in the last 30 days
7.23% introduced
Domestic silk moth
Bombyx mori
One observation in the last 30 days
6.9% introduced
African fat-tailed gecko
Hemitheconyx caudicinctus
Three observations in the last 30 days
6.25% introduced
Firebug
Pyrrhocoris apterus
283 observations in the last 30 days
5.48% introduced
Roman snail
Helix pomatia
43 observations in the last 30 days
5.2% introduced
Alpaca
Vicugna pacos
Eight observations in the last 30 days
5.03% introduced
Monarch butterfly
Danaus plexippus
1,861 observations in the last 30 days
3.69% introduced
Two-spotted cricket
Gryllus bimaculatus
56 observations in the last 30 days
2.95% introduced
Desert locust
Schistocerca gregaria
27 observations in the last 30 days
2.86% introduced
Drugstore beetle
Stegobium paniceum
Seven observations in the last 30 days
2.48% introduced
Two-spot ladybird
Adalia bipunctata
207 observations in the last 30 days
2.23% introduced
Corn snake
Pantherophis guttatus
75 observations in the last 30 days
1.34% introduced
Great house spider
Eratigena atrica
58 observations in the last 30 days
0.85% introduced
Hummingbird hawk-moth
Macroglossum stellatarum
95 observations in the last 30 days
0.75% introduced
Sahara frog
Pelophylax saharicus
30 observations in the last 30 days
0.58% introducedPicnic beetle
Glischrochilus quadrisignatus
Four observations in the last 30 days
0.29% introduced
Garden bumblebee
Bombus hortorum
Four observations in the last 30 days
0.21% introduced
Rook
Corvus frugilegus
582 observations in the last 30 days
0.07% introduced
Sand lizard
Lacerta agilis
Four observations in the last 30 days
0.04% introduced