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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
118 observations in the last 30 days
100% introduced
Domestic cat
Felis catus
901 observations in the last 30 days
99.99% introduced
Cattle
Bos taurus
88 observations in the last 30 days
99.83% introduced
Giant African land snail
Lissachatina fulica
207 observations in the last 30 days
99.58% introduced
European fallow deer
Dama dama
64 observations in the last 30 days
99.51% introduced
Brown anole
Anolis sagrei
829 observations in the last 30 days
99.06% introduced
Asian ladybeetle
Harmonia axyridis
1,637 observations in the last 30 days
96.77% introduced
Brown marmorated stink bug
Halyomorpha halys
517 observations in the last 30 days
96.04% introduced
Domestic sheep
Ovis aries
54 observations in the last 30 days
95.83% introduced
House mouse
Mus musculus
73 observations in the last 30 days
95.56% introduced
Box tree moth
Cydalima perspectalis
Eight observations in the last 30 days
94.69% introduced
Domestic dog
Canis lupus familiaris
332 observations in the last 30 days
93.9% introduced
Nutria
Myocastor coypus
224 observations in the last 30 days
88.03% introduced
Llama
Lama glama
12 observations in the last 30 days
86.1% introduced
Domestic goat
Capra hircus
96 observations in the last 30 days
84.67% introduced
European honey bee
Apis mellifera
1,951 observations in the last 30 days
82.87% introduced
Egyptian goose
Alopochen aegyptiaca
660 observations in the last 30 days
80.46% introduced
European paper wasp
Polistes dominula
109 observations in the last 30 days
78.37% introduced
Domestic house spider
Tegenaria domestica
29 observations in the last 30 days
75.51% introduced
Arion
Arion species
69 observations in the last 30 days
70.06% introduced
Common earthworm
Lumbricus terrestris
25 observations in the last 30 days
68.83% introduced
Indian peafowl
Pavo cristatus
273 observations in the last 30 days
63.82% introduced
Madagascar giant day gecko
Phelsuma grandis
18 observations in the last 30 days
60.08% introduced
Common pill woodlouse
Armadillidium vulgare
306 observations in the last 30 days
58.16% introduced
Garden snail
Cornu aspersum
569 observations in the last 30 days
56.55% introduced
Bathroom moth midge
Clogmia albipunctata
132 observations in the last 30 days
53.84% introduced
Eurasian collared dove
Streptopelia decaocto
849 observations in the last 30 days
51.6% introduced
Domestic guinea pig
Cavia porcellus
12 observations in the last 30 days
48.6% introduced
Leopard slug
Limax maximus
173 observations in the last 30 days
48.34% introduced
Common green bottle fly
Lucilia sericata
13 observations in the last 30 days
48.21% introduced
Jamaican field cricket
Gryllus assimilis
Four observations in the last 30 days
46.15% introduced
Housefly
Musca domestica
33 observations in the last 30 days
45.13% introduced
Seven-spot ladybird
Coccinella septempunctata
478 observations in the last 30 days
41.89% introduced
Common leopard gecko
Eublepharis macularius
Four observations in the last 30 days
38.89% introduced
European garden spider
Araneus diadematus
152 observations in the last 30 days
36.68% introduced
Grove snail
Cepaea nemoralis
74 observations in the last 30 days
34.79% introduced
European hornet
Vespa crabro
50 observations in the last 30 days
32.17% introduced
Common striped woodlouse
Philoscia muscorum
161 observations in the last 30 days
27.34% introduced
Dromedary
Camelus dromedarius
17 observations in the last 30 days
26.87% introduced
Buff-tailed bumblebee
Bombus terrestris
288 observations in the last 30 days
25.68% introduced
Mute swan
Cygnus olor
860 observations in the last 30 days
23% introduced
Yellow mealworm beetle
Tenebrio molitor
Five observations in the last 30 days
21.51% introduced
Brown-tail moth
Euproctis chrysorrhoea
Five observations in the last 30 days
21.14% introduced
Common crab spider
Xysticus cristatus
Seven observations in the last 30 days
16.32% introduced
Sickle-bearing bush cricket
Phaneroptera species
55 observations in the last 30 days
15.91% introduced
Crane fly
Tipula species
32 observations in the last 30 days
14.84% introduced
Devil's coach-horse beetle
Ocypus olens
69 observations in the last 30 days
13.61% introduced
Canada goose
Branta canadensis
1,922 observations in the last 30 days
12.47% introduced
Mallard
Anas platyrhynchos
4,238 observations in the last 30 days
10.6% introduced
Common wasp
Vespula vulgaris
48 observations in the last 30 days
7.72% introduced
Garden banded snail
Cepaea hortensis
13 observations in the last 30 days
7.21% introduced
Domestic silk moth
Bombyx mori
No observations in the last 30 days
6.67% introduced
Firebug
Pyrrhocoris apterus
194 observations in the last 30 days
5.52% introduced
Alpaca
Vicugna pacos
Eight observations in the last 30 days
5.49% introduced
Roman snail
Helix pomatia
40 observations in the last 30 days
5.19% introduced
African fat-tailed gecko
Hemitheconyx caudicinctus
Three observations in the last 30 days
5% introduced
Monarch butterfly
Danaus plexippus
1,352 observations in the last 30 days
3.95% introduced
Two-spotted cricket
Gryllus bimaculatus
38 observations in the last 30 days
2.88% introduced
Two-spot ladybird
Adalia bipunctata
156 observations in the last 30 days
2.63% introduced
Desert locust
Schistocerca gregaria
56 observations in the last 30 days
2.45% introduced
Drugstore beetle
Stegobium paniceum
Eight observations in the last 30 days
2.41% introduced
Corn snake
Pantherophis guttatus
71 observations in the last 30 days
1.28% introduced
Great house spider
Eratigena atrica
34 observations in the last 30 days
0.83% introduced
Hummingbird hawk-moth
Macroglossum stellatarum
59 observations in the last 30 days
0.74% introduced
Sahara frog
Pelophylax saharicus
15 observations in the last 30 days
0.55% introducedPicnic beetle
Glischrochilus quadrisignatus
Two observations in the last 30 days
0.29% introduced
Garden bumblebee
Bombus hortorum
Four observations in the last 30 days
0.2% introduced
Rook
Corvus frugilegus
499 observations in the last 30 days
0.06% introduced
Sand lizard
Lacerta agilis
Three observations in the last 30 days
0.04% introduced