Further expansion of the invasive musselSinanodonta woodiana(Lea, 1834) in Poland – establishment of a new locality and population features

Abstract

-The increasingly frequent appearance of invasive species of mussels is a common phenomenon nowadays. Their rapid expansion is a significant component of the global changes that pose a great ecological impact and a serious threat to the diversity of native fauna. This study documents new localities of occurrence of Sinanodonta woodiana in Poland. We also attempted to determine its density, biomass, morphometric features and age structure. We found that its presence is clearly related to temperature and that the current range of its occurrence in Poland mostly overlaps with the areas with the highest average annual temperatures. The study showed significant differences in mean density between the fishponds: on particular sites the density amounted to 9 individuals/m 2 and their biomass exceeded 3000 g/m 2 . ANOVA revealed significant differences in the mean dimensions of the shells between the three fishponds related to their height and width. Seven-year-old individuals were the most numerous while one-, two-, five-and six-yearold specimens were the most numerous in pond 2. In our opinion, S. woodiana has created a permanent population that is probably able to breed. This is confirmed by the appearance of one-year-old individuals as well as the other younger age classes.Keywords: invasive species / S. woodiana / new records / mussel Résumé -L'expansion de la moule invasive Sinanodonta woodiana (Lea, 1834) en Polognenouvelles localisations et structure de population. L'apparition de plus en plus fréquente d'espèces envahissantes de moules est un phénomène fréquent. Leur rapide expansion est une composante importante des changements globaux qui causent un fort impact écologique et une grave menace pour la diversité de la faune indigène. Cette étude documente de nouvelles localités d'implantation de Sinanodonta woodiana en Pologne. Nous avons également tenté de déterminer la densité, la biomasse, les caractéristiques morphométriques et la structure d'âge. Nous avons constaté que sa présence est clairement liée à la température et que la gamme actuelle de sa localisation en Pologne recouvre principalement les zones où les températures annuelles moyennes sont les plus élevées. L'étude a montré des différences significatives de la densité moyenne entre les étangs : sur des sites particuliers, la densité est élevée à 9 individus/m 2 et la biomasse a dépassé 3000 g/m 2 . L'ANOVA a révélé des différences significatives dans les dimensions moyennes de hauteur et largeur des coquilles entre trois étangs. Des individus de sept ans étaient les plus nombreux en 1 alors que les spécimens de un, deux, cinq et six ans étaient les plus nombreux dans l'étang 2. À notre avis, S. woodiana a créé une population permanente qui est probablement en mesure de se reproduire. Ceci est confirmé par l'apparition d'individus âgés d'un an ainsi que la présence d'autres classes d'âge jeunes.

Modelling the invasion history of Sinanodonta woodiana in Europe: Tracking the routes of a sedentary aquatic invader with mobile parasitic larvae

“…Sinanodonta woodiana was localized in largely discrete regions of Europe until the early 21st Century, when its rapid expansion through the continent became manifest (Lajtner & Crnčan, 2011), following a typical demographic and temporal pattern seen in many invasive species (Sakai et al, 2001). Originally considered as a thermophilic species (Kraszewski & Zdanowski, 2007;Spyra, Jedraszewska, Strzelec, & Krodkiewska, 2016) with limited invasion potential, S. woodiana has now colonized habitats with low water temperatures (Kamburska et al, 2013). It is possible that overcoming a thermal limitation in its reproduction was the evolutionary innovation that triggered the invasion of S. woodiana across Europe (Douda, Vrtílek, Slavík, & Reichard, 2012;Galbraith & Vaughn, 2009;Kraszewski, 2007).…”

The Chinese pond mussel Sinanodonta woodiana demographically outperforms European native mussels

“…Additionally, several individuals (“a bucketful”) of S. woodiana were brought purposely from southern Poland (a straight-line distance of over 500 km) as this species is known to be particularly effective at water filtration. The area of origin of these individuals harbours well-established populations of S. woodiana 29 . The pond was regularly stocked with fish: Alburnus alburnus , Ctenopharyngodon idella, Cyprinus carpio , Esox lucius, Rutilus rutilus, Hypophthalmichthys molitrix, Perca fluviatilis, and Tinca tinca originating from local sources; fish from hatcheries with heated water were not introduced.…”

Demographic and spatial structure at the stage of expansion in thepopulations of some alien land snails in Belgorod city (CentralRussian Upland)

“…The climatic conditions of the southern part of the Central Russian Upland will be favorable for the three studied species as well. There are other examples of the effect of climate change on the successful dispersal and expansion in new habitats by invasive molluscs, for example, for freshwater species Sinanodonta woodiana (Lea, 1834) [Spyra et al, 2016] and land snail Megalobulimus sanctipauli (Ihering et Pilsbry, 1900) [Beltramino et al, 2015].…”