Interesting/Little Known introduced populations

Red cherry shrimps Neocaridina denticulata have been found to have a well-established and self-sustaining population in Hungary. Their population is mainly centered on a natural thermal pond but they also occur in a neighbouring non-thermal stream - they seem able to survive the winter even in the stream. All of the studied fish species in the stream environment (native gudgeon, common roach and European chub and non-native pumpkinseed and stone moroko) were found to have fed on red cherry shrimps.

As well as in Hungary, populations of red cherry shrimp are known from thermally polluted waters in Germany and Poland.

More information can be found in the scientific paper below:
Occurrence of non-native red cherry shrimp in European temperate waterbodies: a case study from Hungary | Knowledge and Management of Aquatic Ecosystems

 

There is/was a similar population of Neon Tetras in a hot spring in Colorado.

 

Result of the pet trade ?

 

Yes.

 

I suppose I shouldn't have even asked as it is so unsuprising.

 

I have just seen this paper from 2013 that describes a small but growing number (including reproduction) of Vietnamese potbelly pigs living wild in Spain. The animals are the result of both deliberate and accidental releases of pets. Several potential cases of hybridisation with wild boar had already been reported.

The paper is included below (I think it may need to be copy-pasted into the searchbar; it doesn't seem to want to hyperlink):
file:///C:/Users/Owner/Downloads/272211-Text%20de%20l'article-371552-1-10-20140121.pdf

 

2 Painted frog-species on new places in France :

http://amphibian-reptile-conservati...3/ARC_14_3_[General_Section]_189-199_e266.pdf

 

Many scientists believe that lots of 'native' populations of frogs and other small animals and plants in Europe are introductions. Only they happened some centuries ago, so the first biologist who studied e.g. frogs in France described them as native.

 

Mutant Crayfish on a Belgium cemetery :

Escaped cloned female mutant crayfish take over Belgian cemetery

 

Termite from Taiwan in Israel and the USA :

Coptotermes formosanus (Blattodea: Rhinotermitidae) established in Israel and world distribution of a major termite pest

 

The Band-eyed drone fly in Argentina :

New records of the exotic Band-eyed Drone Fly, Eristalinus taeniops (Wiedemann, 1818) (Diptera, Syrphidae), in Argentina

 

Complete new invasive ant-species found in Germany from an unknown orgin :

Revision of the Plagiolepis schmitzii group with description of Pl. invadens sp. nov. – a new invasive supercolonial species (Hymenoptera: Formicidae)

 

North American mud-dauber wasp found on Malta :

The introduction and establishment of Sceliphron caementarium (Drury, 1773) (Hymenoptera, Sphecidae) in Malta (Central Mediterranean)

 

New cichlid-species found in Mexico :

A new record of the exotic Guapote jaguar, Parachromis managuensis (Günther, 1867) (Cichliformes, Cichlidae) in a tropical coastal lagoon of the Mexican Pacific slope

 

Article about the Black and white tegu in the South-eastern USA :

These Four-Foot Lizards Will Eat Anything—and They're Invading the Southeastern U.S. | Smart News | Smithsonian Magazine

 

Just seen this paper about an interesting case - dusky langurs have recently been observed in Singapore. Although the researchers consider it likely that the three langurs arrived under their own steam, either by walking across the Johor-Singapore Causeway or by swimming across the Johor Strait from Malaysia, they still refer to the dusky langurs as non-native and have concerns about the impact of the dusky langurs on native Raffle's banded langurs. If the dusky langurs are found to be having a negative impact on the banded langurs, they may be relocated back to the mainland.

The paper is included here:
file:///C:/Users/Owner/Downloads/5818-Full%20article%20text%20with%20author%20details-31525-1-10-20200626.pdf

 

Article about the introduction of penguins in Norway :

The Last Arctic King Penguin