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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.
European fallow deer
Dama dama
40 observations in the last 30 days
100% introduced
Cattle
Bos taurus
166 observations in the last 30 days
100% introduced
Domestic horse
Equus ferus caballus
244 observations in the last 30 days
100% introduced
Domestic cat
Felis catus
1,677 observations in the last 30 days
100% introduced
Brown anole
Anolis sagrei
1,343 observations in the last 30 days
99.58% introduced
Giant African land snail
Lissachatina fulica
570 observations in the last 30 days
99.48% introduced
House mouse
Mus musculus
109 observations in the last 30 days
97.32% introduced
Asian ladybeetle
Harmonia axyridis
5,649 observations in the last 30 days
97.24% introduced
Domestic sheep
Ovis aries
84 observations in the last 30 days
97.05% introduced
Box tree moth
Cydalima perspectalis
474 observations in the last 30 days
96.02% introduced
Domestic dog
Canis lupus familiaris
643 observations in the last 30 days
95.92% introduced
Nutria
Myocastor coypus
345 observations in the last 30 days
94.65% introduced
Brown marmorated stink bug
Halyomorpha halys
765 observations in the last 30 days
91.26% introduced
Llama
Lama glama
14 observations in the last 30 days
89.39% introduced
Egyptian goose
Alopochen aegyptiaca
176 observations in the last 30 days
88.64% introduced
Domestic goat
Capra hircus
128 observations in the last 30 days
83.29% introduced
European honey bee
Apis mellifera
4,410 observations in the last 30 days
82.7% introduced
Common earthworm
Lumbricus terrestris
210 observations in the last 30 days
76.86% introduced
European paper wasp
Polistes dominula
677 observations in the last 30 days
71.03% introduced
Common pill woodlouse
Armadillidium vulgare
1,509 observations in the last 30 days
62.96% introduced
Garden snail
Cornu aspersum
2,243 observations in the last 30 days
60.03% introduced
Indian peafowl
Pavo cristatus
506 observations in the last 30 days
59.66% introduced
Domestic house spider
Tegenaria domestica
96 observations in the last 30 days
58.78% introduced
Arion
Arion species
405 observations in the last 30 days
58.71% introduced
Bathroom moth midge
Clogmia albipunctata
202 observations in the last 30 days
55.95% introduced
Eurasian collared dove
Streptopelia decaocto
1,625 observations in the last 30 days
54.65% introduced
Domestic guinea pig
Cavia porcellus
11 observations in the last 30 days
54.05% introduced
Madagascar giant day gecko
Phelsuma grandis
Ten observations in the last 30 days
52.31% introduced
Common green bottle fly
Lucilia sericata
97 observations in the last 30 days
43.9% introduced
Leopard slug
Limax maximus
776 observations in the last 30 days
41.37% introduced
European garden spider
Araneus diadematus
186 observations in the last 30 days
40.93% introduced
Seven-spot ladybird
Coccinella septempunctata
5,758 observations in the last 30 days
40.69% introduced
Housefly
Musca domestica
92 observations in the last 30 days
39.68% introduced
Grove snail
Cepaea nemoralis
784 observations in the last 30 days
39.29% introduced
Common leopard gecko
Eublepharis macularius
Three observations in the last 30 days
33.33% introduced
European hornet
Vespa crabro
1,195 observations in the last 30 days
28.17% introduced
Devil's coach-horse beetle
Ocypus olens
79 observations in the last 30 days
27.54% introduced
Common striped woodlouse
Philoscia muscorum
530 observations in the last 30 days
24.84% introduced
Dromedary
Camelus dromedarius
20 observations in the last 30 days
23.84% introduced
Mute swan
Cygnus olor
1,982 observations in the last 30 days
23.28% introduced
Yellow mealworm beetle
Tenebrio molitor
18 observations in the last 30 days
22.13% introduced
Common wasp
Vespula vulgaris
235 observations in the last 30 days
21.78% introduced
Jamaican field cricket
Gryllus assimilis
Four observations in the last 30 days
20.69% introduced
Brown-tail moth
Euproctis chrysorrhoea
152 observations in the last 30 days
17.41% introduced
Common crab spider
Xysticus cristatus
84 observations in the last 30 days
16.52% introduced
Monarch butterfly
Danaus plexippus
1,762 observations in the last 30 days
13.17% introduced
Buff-tailed bumblebee
Bombus terrestris
533 observations in the last 30 days
13.08% introduced
Canada goose
Branta canadensis
5,745 observations in the last 30 days
10.63% introduced
Mallard
Anas platyrhynchos
7,181 observations in the last 30 days
7.63% introduced
Crane fly
Tipula species
852 observations in the last 30 days
4.95% introduced
Roman snail
Helix pomatia
1,678 observations in the last 30 days
4.73% introduced
Firebug
Pyrrhocoris apterus
1,813 observations in the last 30 days
4.23% introduced
Garden banded snail
Cepaea hortensis
355 observations in the last 30 days
3.66% introduced
Alpaca
Vicugna pacos
Eight observations in the last 30 days
3.57% introduced
Drugstore beetle
Stegobium paniceum
Seven observations in the last 30 days
2.61% introduced
Two-spot ladybird
Adalia bipunctata
918 observations in the last 30 days
2.38% introduced
Two-spotted cricket
Gryllus bimaculatus
63 observations in the last 30 days
1.61% introduced
Sahara frog
Pelophylax saharicus
20 observations in the last 30 days
1.41% introduced
Corn snake
Pantherophis guttatus
237 observations in the last 30 days
0.88% introduced
Great house spider
Eratigena atrica
75 observations in the last 30 days
0.72% introduced
Hummingbird hawk-moth
Macroglossum stellatarum
236 observations in the last 30 days
0.35% introduced
Rook
Corvus frugilegus
573 observations in the last 30 days
0.07% introduced