Loading AI tools
Species of flatworm From Wikipedia, the free encyclopedia
Girardia tigrina, known as the brown planarian or the immigrant triclad flatworm, is a species of dugesiid native to the Americas.[1] It has been accidentally introduced into Europe[2] and Japan.[3]
Girardia tigrina | |
---|---|
![]() | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Platyhelminthes |
Order: | Tricladida |
Family: | Dugesiidae |
Genus: | Girardia |
Species: | G. tigrina |
Binomial name | |
Girardia tigrina (Girard, 1850) | |
Synonyms | |
|
G. tigrina individuals are around 10 mm in length. They have a head with two broad and short auricles. The two eyes are in two pigment-free patches. The dorsal surface of the body has numerous pigment spots.[3]
Originally from the Americas, Girardia tigrina has become an invasive species in Europe and Japan. Since being first recorded in France in 1925,[4] this species has been reported from many other European countries, including Germany,[5][6] Italy,[7] the Netherlands,[8] Romania,[9] and Wales.[10]
In North Wales, this species has displaced the native triclad species Polycelis nigra and Polycelis tenuis due to its superior exploitation of food.[2]
G. tigrina is a carnivorous species that feeds on invertebrates such as oligochaetes, isopods, chironomids, snails, caddisflies, and mayflies.[2]
The haploid number is n=8. There are diploid (2n=16) and triploid (3n=24) specimens.[3]
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.