Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Ichthyosaura alpestris (Laurenti, 1768): an alien population in Lido di Venezia (NE Italy) (Amphibia, Urodela, Salamandridae).

Abstract

This paper reports an alien population of Ichthyosaura alpestris found in Lido di Venezia (Venice, Italy), in the coastal pinewood of "Alberoni", by the local entomologist Leonida Grazioli on 9 March 2012. The specimen was found under a log, near a large retrodunal pond. On 1-2 May 2020, several individuals of unidentified newts were reported in a small pond in the same pinewood, about 500-600 m apart from the previous site. A subsequent survey to the pond on June 25 revealed more than 30 adult individuals, some of which were dip-netted for determination. All of them were unambiguously identified as I. alpestris, of both sexes and mostly in breeding conditions. Removal of the whole population appeared impossible, though, as also some developing eggs were present on floating vegetation and dead leaves at the bottom; in addition, at least 7 mature larvae of the same species (about 35-40 mm in total length) were observed in another pond nearby. Proper actions should be considered to remove all of them from this site, in accordance with the authorities and operators in charge of its management.