Spanish Slug - As An Invasive Species

As An Invasive Species

Arion vulgaris is considered among the 100 worst alien species in Europe in DAISIE European Invasive Alien Species Gateway, and this is the only land gastropod among these one hundred ones. Arion vulgaris is the worst slug pest in Europe and it has an important economical, ecological, health and social impact.

The local name of the slug in the regions it has invaded is typically a translation of "Spanish slug". In recent years, as its dominance has increased, it has been nicknamed "killer slug", perhaps due to its tendency to eat dead or weaker individuals of the species, although its destructive impact on gardens may seem just as appropriate a reason for the name. The German name "Spanische Wegschnecke" for the species translates "Spanish road slug", which could be misunderstood to indicate spread along roadside vegetation. "Wegschnecke" is the German artificial name invented for the genus Arion, so all members of the genus carry this name.

The main reason behind problematic invasions of gardens by the Spanish slug is that it has adapted to a dry climate, where most eggs will dry out before hatching. The slug lays hundreds of eggs so that at least some may hatch. In the less dry regions of Northern Europe and Britain, the constraints of drought do not limit reproduction to the same degree. The species is also gregarious, allowing for mass occurrences. Like all pulmonate snails and slugs, it is a hermaphrodite, meaning that one single slug can start an infestation. Poor control of exported produce has also been assumed to be a cause, as the main route for the slugs to spread was long time thought to have been through careless handling of imported produce from Spain and Portugal.

In recent years, it has been observed that the Spanish slug has bred with the indigenous black slug Arion ater to produce a more frost-resistant variety in the more northerly regions. Danish authorities maintain that the Spanish slug, black slug and red slug are in fact subspecies of the same species.

Read more about this topic:  Spanish Slug

Other articles related to "as an invasive species, species, invasive":

Lythrum Salicaria - Cultivation, Uses, and Impact - As An Invasive Species - Biological Control
... Five species of beetle use purple loosestrife as their natural food source and they can do significant damage to the plant ... used as biological control agents include two species of leaf beetle Galerucella calmariensis and Galerucella pusilla, and three species of weevil Hylobius transversovittatus ... Infestations of either of the Galerucella species is extremely effective in wiping out a stand of purple loosestrife, defoliating up to 100% of the plants in an area ...
Lonicera Maackii - Cultivation and Uses - As An Invasive Species
... this plant is illegal or controlled in some areas of the United States due to its well documented invasive character ... It is listed as a "invasive, banned" species in Connecticut, "prohibited" in Massachusetts, and a "Class B noxious weed" in Vermont ... It is also officially listed as an invasive species by government agencies in Wisconsin and Tennessee ...

Famous quotes containing the words species and/or invasive:

    Books, gentlemen, are a species of men, and introduced to them you circulate in the “very best society” that this world can furnish, without the intolerable infliction of “dressing” to go into it. In your shabbiest coat and cosiest slippers you may socially chat even with the fastidious Earl of Chesterfield, and lounging under a tree enjoy the divinest intimacy with my late lord of Verulam.
    Herman Melville (1819–1891)

    The frequency of personal questions grows in direct proportion to your increasing girth. . . . No one would ask a man such a personally invasive question as “Is your wife having natural childbirth or is she planning to be knocked out?” But someone might ask that of you. No matter how much you wish for privacy, your pregnancy is a public event to which everyone feels invited.
    Jean Marzollo (20th century)