Introgression and differentiation of the invasive slug arion vulgaris from native A. ater

Bjørn A. Hatteland*, Torstein Solhøy, Christoffer Schander, Morten Skage, Ted Von Proschwitz, Leslie R. Noble

*Corresponding author for this work

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The large arionid slug Arion vulgaris is an invasive pest dispersing through large parts of Europe and causing considerable damage in gardens, horticulture and agriculture. It is also possible that this so-called "Iberian slug" has an impact on Norwegian ecosystems, displacing or hybridizing with the native black slug Arion ater. The taxonomy of the large arionids is complex and confusing, encompassing different anatomical forms and colour varieties. The present study integrates, for the first time, coloration, ligula morphology, genital morphometry, nuclear and mitochondrial DNA in order to differentiate the large arionids found in Norway, A. vulgaris, A. ater and A. rufus. These data revealed a clear separation between A. vulgaris and A. ater based on the morphology of the genitalia and mtDNA. However, introgression with the red slug A. rufus was apparent in approximately half of the A. ater specimens analysed, evidenced by ligula morphology, mitochondrial and nuclear DNA. In addition, the mitochondrial COI gene and the nuclear ITS1 gene suggested introgression between A. ater and A. vulgaris. Phylogenetic analyses that included A. vulgaris, A. ater and A. rufus from other parts of Europe, together with A. flagellus, A. fuscus, A. Lusitanicus and A. nobrei suggest that A. vulgaris is more closely related to A. ater and A. rufus than to A. Lusitanicus. This study confirms the uncertainty of identification based solely on coloration and stresses the importance of integrating several approaches to differentiate these large arionids, allowing a better appreciation of their invasive potential, ecological impact and current distribution.

Original languageEnglish
Pages (from-to)303-321
Number of pages19
JournalMalacologia
Volume58
Issue number1-2
DOIs
Publication statusPublished - 1 Apr 2015

Fingerprint

Arion ater
slugs
slug
introgression
mitochondrial DNA
horticulture
gene
morphometry
nuclear genome
ecological impact
genitalia
garden
colored varieties
Arion
agriculture
phylogenetics
color
DNA
damage
ecosystem

Keywords

  • Arionidae
  • Hybridization
  • mitochondrial and nuclear DNA
  • morphometrics
  • pest slug

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Hatteland, B. A., Solhøy, T., Schander, C., Skage, M., Proschwitz, T. V., & Noble, L. R. (2015). Introgression and differentiation of the invasive slug arion vulgaris from native A. ater. Malacologia, 58(1-2), 303-321. https://doi.org/10.4002/040.058.0210

Introgression and differentiation of the invasive slug arion vulgaris from native A. ater. / Hatteland, Bjørn A.; Solhøy, Torstein; Schander, Christoffer; Skage, Morten; Proschwitz, Ted Von; Noble, Leslie R.

In: Malacologia, Vol. 58, No. 1-2, 01.04.2015, p. 303-321.

Research output: Contribution to journalArticle

Hatteland, BA, Solhøy, T, Schander, C, Skage, M, Proschwitz, TV & Noble, LR 2015, 'Introgression and differentiation of the invasive slug arion vulgaris from native A. ater', Malacologia, vol. 58, no. 1-2, pp. 303-321. https://doi.org/10.4002/040.058.0210
Hatteland BA, Solhøy T, Schander C, Skage M, Proschwitz TV, Noble LR. Introgression and differentiation of the invasive slug arion vulgaris from native A. ater. Malacologia. 2015 Apr 1;58(1-2):303-321. https://doi.org/10.4002/040.058.0210
Hatteland, Bjørn A. ; Solhøy, Torstein ; Schander, Christoffer ; Skage, Morten ; Proschwitz, Ted Von ; Noble, Leslie R. / Introgression and differentiation of the invasive slug arion vulgaris from native A. ater. In: Malacologia. 2015 ; Vol. 58, No. 1-2. pp. 303-321.
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