First report of Scutariella japonica (Matjašič, 1990), a temnocephalid epibiont from South-East Asia, found on introduced ornamental freshwater shrimp in European waters

Abstract

This contribution presents the first record of ornamental shrimp epibiont, Scutariella japonica (Platyhelminthes: Temnocephalida) in European waters. The species lives on freshwater Atyidae shrimp from temperate, subtropical and tropical zones of South-East Asia. In total, 120 individuals of Neocaridina davidi shrimp were caught in thermally polluted canal of Oder river, near the city of Gryfino, in the northwest part of Poland. In that group, 5.83% were infected with scutariellids. Among shrimp, females were mostly infected (85.71%). Since ornamental shrimp released into thermally polluted water bodies have been also noticed in surrounding waters of natural temperature regime in Europe, S. japonica may spread further following potential expansion of the Neocaridina shrimp in Oder river. It is possible that other crustaceans, both native and alien which are present at this location, may also become vectors of this epibiont.

Association of the alga Cladogonium sp. with a multifactorial disease outbreak in dwarf shrimp (Neocaridina davidi)

“…Nevertheless, the present study provides further information about Cladogonium sp. in N. davidi, which is of great concern because of the wide distribution of this shrimp species in aquaria, in multiple aquatic environments and even as a neozoon (Klotz et al 2013, Schoolmann & Arndt 2018, Maciaszek et al 2021). In this paper, we have provided the first molecular data that group the Cladogonium sp.…”

“…Current observations show that this species may also establish stable populations in thermally polluted temperate waters, e.g. the Gillbach stream in North Rhine-Westphalia, Germany (Klotz et al 2013, Schoolmann & Arndt 2018 or the Oder River near Gryfino, Poland (Maciaszek et al 2021), as these animals can withstand water temperatures between 6 and 30°C (Klotz et al 2013). Therefore, diseases affecting these animals are not only of concern for aquarists but also for the native crustacean fauna in temperate waters.…”

Epibiont Cohabitation in Freshwater Shrimp Neocaridina davidi with the Description of Two Species New to Science, Cladogonium kumaki sp. nov. and Monodiscus kumaki sp. nov., and Redescription of Scutariella japonica and Holtodrilus truncatus

“…To date, S. japonica has been found in Neocaridina spp. in China, Japan, and Taiwan [16,18,29,30], and more recently, Poland [17]. This epibiont has been also detected in Caridina pseudodenticulata (Hung et al, 1993) in Taiwan, Caridina sp.…”

“…Due to intentional releases, N. davidi has already established itself in several locations beyond its native range [7,[12][13][14][15]. In a few instances, non-native N. davidi hosted alien epibionts such as the branchiobdellidan Holtodrilus truncatus (Liang, 1963) and the temnocephalid Scutariella japonica (Matjašič, 1990) [16][17][18]. More recently, microsporidians, which are intracellular parasites, have been found in a European population of N. davidi [19].…”

Friends or enemies: Multi‐species interactions among biofoulers, endoparasites and their gastropod hosts

“…Nonnative species can affect communities directly via predation, biofouling and competition, or indirectly by changing habitat structure and parasite–host dynamics (Croll et al, 2005; Goedknegt et al, 2017; Karatayev et al, 2002; Zaiko et al, 2009). They can displace native species (Karatayev et al, 2002), introduce nonnative pathogens and parasites (Goedknegt et al, 2016; Maciaszek et al, 2021) and modify existing host–parasite interactions (Goedknegt et al, 2016). There is a growing interest in possible positive impacts of nonnative organisms, especially long‐established species, at a local scale (De Pádua et al, 2021; Gendron & Marcogliese, 2017; Marszewska et al, 2020; Pintor & Byers, 2015; Stanicka et al, 2021).…”