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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.
Chicken
Gallus gallus domesticus
278 observations in the last 30 days
100% introduced
Domestic horse
Equus ferus caballus
129 observations in the last 30 days
100% introduced
Domestic cat
Felis catus
1,092 observations in the last 30 days
99.98% introduced
Giant African land snail
Lissachatina fulica
280 observations in the last 30 days
99.52% introduced
European fallow deer
Dama dama
141 observations in the last 30 days
99.37% introduced
Brown anole
Anolis sagrei
994 observations in the last 30 days
99.36% introduced
Cattle
Bos taurus
84 observations in the last 30 days
98.51% introduced
Domestic sheep
Ovis aries
76 observations in the last 30 days
97.06% introduced
Brown marmorated stink bug
Halyomorpha halys
656 observations in the last 30 days
96.41% introduced
Box tree moth
Cydalima perspectalis
Nine observations in the last 30 days
96.17% introduced
Asian ladybeetle
Harmonia axyridis
1,641 observations in the last 30 days
95.63% introduced
House mouse
Mus musculus
76 observations in the last 30 days
95.61% introducedYak
Bos grunniens
Five observations in the last 30 days
94.74% introducedCommon pheasant
Phasianus colchicus
669 observations in the last 30 days
94.07% introducedDomestic duck
Anas platyrhynchos domesticus
1,045 observations in the last 30 days
93.18% introduced
Domestic dog
Canis lupus familiaris
416 observations in the last 30 days
92.82% introduced
Nutria
Myocastor coypus
526 observations in the last 30 days
87.66% introduced
Egyptian goose
Alopochen aegyptiaca
1,063 observations in the last 30 days
84.42% introduced
Domestic goat
Capra hircus
137 observations in the last 30 days
84.24% introduced
Llama
Lama glama
Seven observations in the last 30 days
81.38% introduced
European honey bee
Apis mellifera
2,126 observations in the last 30 days
81.29% introducedEuropean rabbit
Oryctolagus cuniculus
466 observations in the last 30 days
80.72% introduced
Domestic house spider
Tegenaria domestica
37 observations in the last 30 days
77.71% introduced
European paper wasp
Polistes dominula
241 observations in the last 30 days
75% introduced
Arion
Arion species
90 observations in the last 30 days
72.98% introduced
Common pill woodlouse
Armadillidium vulgare
589 observations in the last 30 days
71.32% introduced
Common earthworm
Lumbricus terrestris
37 observations in the last 30 days
70.01% introducedRock dove
Columba livia
3,633 observations in the last 30 days
62.45% introduced
Madagascar giant day gecko
Phelsuma grandis
20 observations in the last 30 days
61.91% introduced
Indian peafowl
Pavo cristatus
409 observations in the last 30 days
60.52% introduced
Garden snail
Cornu aspersum
793 observations in the last 30 days
57.19% introduced
Common green bottle fly
Lucilia sericata
57 observations in the last 30 days
53.21% introduced
Leopard slug
Limax maximus
190 observations in the last 30 days
51.63% introduced
Bathroom moth midge
Clogmia albipunctata
270 observations in the last 30 days
51.31% introducedShore crab
Carcinus maenas
195 observations in the last 30 days
49.19% introduced
Housefly
Musca domestica
49 observations in the last 30 days
47.38% introduced
Eurasian collared dove
Streptopelia decaocto
1,496 observations in the last 30 days
46.56% introduced
Jamaican field cricket
Gryllus assimilis
Five observations in the last 30 days
45.76% introduced
Common striped woodlouse
Philoscia muscorum
269 observations in the last 30 days
39.28% introduced
Seven-spot ladybird
Coccinella septempunctata
703 observations in the last 30 days
37.05% introduced
European garden spider
Araneus diadematus
107 observations in the last 30 days
36.7% introduced
Domestic guinea pig
Cavia porcellus
Two observations in the last 30 days
36.07% introduced
Grove snail
Cepaea nemoralis
108 observations in the last 30 days
34.14% introduced
Common leopard gecko
Eublepharis macularius
Five observations in the last 30 days
32.76% introduced
Buff-tailed bumblebee
Bombus terrestris
443 observations in the last 30 days
29.1% introduced
European hornet
Vespa crabro
32 observations in the last 30 days
28.34% introducedSickle-bearing bush cricket
Phaneroptera species
22 observations in the last 30 days
25.02% introduced
Dromedary
Camelus dromedarius
22 observations in the last 30 days
24.92% introduced
Superworm
Zophobas atratus
Two observations in the last 30 days
23.32% introduced
Common crab spider
Xysticus cristatus
Five observations in the last 30 days
22.29% introduced
Yellow mealworm beetle
Tenebrio molitor
Nine observations in the last 30 days
22.06% introduced
Mute swan
Cygnus olor
1,734 observations in the last 30 days
21.66% introduced
Human flea
Pulex irritans
Five observations in the last 30 days
20% introduced
Crane fly
Tipula species
34 observations in the last 30 days
16.52% introduced
Brown-tail moth
Euproctis chrysorrhoea
Four observations in the last 30 days
15.8% introduced
Devil's coach-horse beetle
Ocypus olens
37 observations in the last 30 days
14.81% introduced
Canada goose
Branta canadensis
2,852 observations in the last 30 days
13.66% introduced
Common wasp
Vespula vulgaris
69 observations in the last 30 days
10.51% introduced
Garden banded snail
Cepaea hortensis
17 observations in the last 30 days
8.27% introduced
Domestic silk moth
Bombyx mori
One observation in the last 30 days
8% introduced
Mallard
Anas platyrhynchos
5,459 observations in the last 30 days
7.52% introduced
Roman snail
Helix pomatia
50 observations in the last 30 days
5.67% introduced
Alpaca
Vicugna pacos
No observations in the last 30 days
5.56% introduced
Firebug
Pyrrhocoris apterus
226 observations in the last 30 days
4.61% introduced
Two-spot ladybird
Adalia bipunctata
102 observations in the last 30 days
4.49% introduced
African fat-tailed gecko
Hemitheconyx caudicinctus
Three observations in the last 30 days
4.35% introduced
Monarch butterfly
Danaus plexippus
1,468 observations in the last 30 days
3.76% introduced
Drugstore beetle
Stegobium paniceum
12 observations in the last 30 days
2.67% introduced
Desert locust
Schistocerca gregaria
23 observations in the last 30 days
2.65% introduced
Two-spotted cricket
Gryllus bimaculatus
22 observations in the last 30 days
1.98% introduced
Corn snake
Pantherophis guttatus
60 observations in the last 30 days
1.76% introduced
Flesh fly
Sarcophaga species
Four observations in the last 30 days
1.56% introduced
Great house spider
Eratigena atrica
47 observations in the last 30 days
1.37% introduced
Sahara frog
Pelophylax saharicus
13 observations in the last 30 days
0.67% introduced
Dubia roach
Blaptica dubia
One observation in the last 30 days
0.65% introduced
Hummingbird hawk-moth
Macroglossum stellatarum
42 observations in the last 30 days
0.59% introduced
Bactrian camel
Camelus bactrianus
Two observations in the last 30 days
0.4% introducedPicnic beetle
Glischrochilus quadrisignatus
Two observations in the last 30 days
0.26% introduced
Sac spider
Clubiona species
14 observations in the last 30 days
0.15% introduced
Garden bumblebee
Bombus hortorum
No observations in the last 30 days
0.11% introduced
Rook
Corvus frugilegus
964 observations in the last 30 days
0.04% introduced
Sand lizard
Lacerta agilis
Three observations in the last 30 days
0.04% introduced
Forest cockroach
Planuncus tingitanus sensu lato
Two observations in the last 30 days
0.04% introduced