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Tornatellina boeningi Schmacker & Boettger, 1891 (now Tornatellides boeningi), lectotype, SMF 42552, 3.3 mm height, Tamsui, Taiwan; scale bar = 1 mm (Photo credit: Sigrid Hof). Full-size DOI: 10.7717/peerj.11185/fig-2
Source publication
Three previously unreported species of tropical land snails were found in the greenhouses of the Gothenburg (Göteborg) Botanical Garden and the Public Science Center Universeum in Gothenburg. For Tornatellides cf. boeningi (Schmacker & Boettger, 1891) and Ovachlamys fulgens ( Gude, 1900 ) this is the first observed occurrence in a European greenhou...
Contexts in source publication
Context 1
... cf. boeningi (Schmacker & Boettger, 1891) Tornatellina boeningi Schmacker & Boettger, 1891: 180-181, pl. 2, fig. 7: Tamsui, NordFormosa Tornatellina boeningi-Yen, 1939: 73, pl. 6, figs. 25-26: "type locality: Takao, Formosa"; additional material from Shekko, Hongkong; lectotype SMF 42552 ( fig. 26: "Takoa, S. Formosa") Tornatellides boeningi- Sasaki, 2008: 192 ...
Context 2
... the adjacent Ryukyu Islands and the Izu Islands south of Honshu. Furthermore, it occurs on the Ogasawara Islands as reported by Wada, Kawakami & Chiba (2012) who observed its survival of the passage through a bird's digestive system thus suggesting a bird-mediated dispersal mode. Conchological comparison to images of the lectotype (Yen, 1939: fig. 26 and Fig. 2) and a Japanese specimen figured by Sasaki (2008: fig. 15) shows great resemblance to our species; the original description gives dimensions of 3.25 mm height and 1.88 mm diameter which falls well within the range of the material from the ...
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Citations
... This situation often leads to alien species remaining undetected, or even to be erroneously identified, for considerably long periods of time (e.g. Richling & von Proschwitz, 2021). ...
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Invasive species are one of the main causes of biodiversity loss worldwide. Pet trade is a well-known pathway for the introduction of non-native species. Prevention is the most effective, least time-consuming, and least financially demanding way to protect biodiversity against the spreading of invasive species. The main part of prevention is the early detection of a potentially high-risk species, as well as the successful implementation of prevention strategies in legislation and practice. This study summarizes the pre-introduction screening of pet-traded terrestrial gastropod species and their potential occurrence in the EU territory. Based on the list of species traded in the Czech Republic, one of the most important global hubs of the pet trade, 51 species (49 snails and 2 slugs) were analysed. Due to a lack of certain native occurrence data, only 29 species (28 snails and 1 slug) from 10 families were modelled using MaxEnt software. Twenty species from seven families have potential occurrence in the EU territory. Based on MaxEnt modelling, we considered the following species to be high-risk candidates for the EU: Anguispira alternata, A. strongylodes, Laevicaulis alte, Megalobulismus oblongus, Rumina decollata, and R. saharica. Based on this estimation, we present considerations with which to further improve the risk assessment and recommend continuous monitoring of the pet trade market.
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The first record in Malta, and the second record in Europe, of the tropical terrestrial gastropod Paropeas achatinaceum (L. Pfeiffer, 1846) is presented, with an annotated bibliography of the allochthonous (and non-marine) gastropod fauna hitherto recorded from the Maltese archipelago.
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Reliable identification of species is important for protecting native ecosystems against the invasion of non-native species. DNA barcoding using molecular markers, such as the mitochondrial cytochrome oxidase subunit 1 (COI) gene, helps researchers distinguish species. In this study, we focused on introduced veronicellid slugs in the Ryukyu Islands and some greenhouses on mainland Japan. Some veronicellids are medium-to-high risk pest species for humans. Identifying veronicellid species by their external morphology is difficult and unreliable because there is substantial overlap between intraspecific variation and interspecific differentiation. Therefore, internal morphologies such as male genitalia have been the primary traits used to distinguish veronicellids. To identify introduced veronicellid slugs in Japan to the species level, we used morphological assessment of male genitalia and DNA barcoding of the standard COI gene fragment. We also conducted species-delimitation analyses based on the genetic data. The results showed that five evolutionarily significant units, corresponding to four nominal species inhabit the Ryukyu Islands, of which two species were also found in the greenhouses of mainland Japan, including the first record of Sarasinula plebeia in Japan. The presence of non-native slug species could increase the transmission of parasites in Japan.
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