The Asian fish tapeworm Schyzocotyle acheilognathi is widespread in baitfish retail stores in Michigan, USA

Boonthai, Traimat; Herbst, Seth J.; Whelan, Gary; Deuren, Michelle Gunn Van; Loch, Thomas P.; Faisal, Mohamed

doi:10.1186/s13071-017-2541-6

Cited by 21 publications

(15 citation statements)

References 25 publications

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“…Ecological impacts of alien invasive shes include the displacement and extinction of native species (Mills et al, 2004;Haubrock et al, 2018), modi cation of trophic interactions (Martin et al, 2010;Haubrock et al, 2019) and disruption of ecosystem functioning (Capps & Flecker, 2013). Fish invaders can also transmit novel pathogens (Gozlan et al, 2005;Waicheim et al, 2014;Ercan et al, 2019;Boonthai et al, 2017) as well as cause genetic pollution via the hybridization with native species (Oliveira et al 2006, Gunnell et al 2007). Introductions of alien sh species into previously shless insular systems can additionally exacerbate impacts due to resident species naiveté (Knapp et al, 2001, Lecomte et al, 2013Cuthbert et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

What is the recorded economic cost of alien invasive fishes worldwide?

Haubrock

Bernery

Cuthbert

et al. 2021

Preprint

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Invasive alien fishes have caused pernicious ecological impacts on aquatic ecosystems. However, there has not been a global appraisal of associated economic impacts. Here, we compiled reported economic impacts of invasive alien fishes using the most comprehensive global database of invasion costs (InvaCost). We analyze how fish invasion costs are distributed geographically and temporally, as well as which socioeconomic sectors are most impacted. Fish invasions have caused the economic loss of at least US$32.8 billion globally (2017 value), from only 26 reported species (of 128 known invasive alien fish species). North America had the highest costs (> 99%), followed by Europe and Asia, with no costs reported in Africa, Oceania nor South America. Very few costs from invasive fish in the marine realm were reported (0.1%). Most costs are related to resource damages and losses (97%), with relatively little spent on management; mainly impacting the fisheries sector (93%). However, when only considering empirically observed costs (without predictions), most costs were incurred by authorities and stakeholders through management, indicating that damage costs from invasive fishes are often extrapolated and/or difficult to quantify. Fish invasion costs increase markedly over time, from US$0.57 billion/year in the 1980s to US$1 billion/year in the 2000s. Fish invasions have been relatively well studied; however, economic costs have been lower than expected based on overall numbers of alien species. Accordingly, although costs are increasing, improved reporting is required to better understand how fish invasion costs are distributed across time, space and economic sectors.

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Section: Introductionmentioning

confidence: 99%

What is the recorded economic cost of alien invasive fishes worldwide?

Haubrock

Bernery

Cuthbert

et al. 2021

Preprint

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“…Anglers and aquarists potentially play a role in these processes, as the transport and exchange of live individuals between and among these hobbyist groups establishes novel pathways and increases the frequency of translocation of propagules (Figure 6). Another pressing conservation issue related to non‐native fish in the context of anglers and aquarists is the translocation of diseases and parasites: recent research has shown that the activities of anglers can transmit diseases by introducing disease‐carrying baitfish (Boonthai et al, 2017, 2018). Thus, anglers and aquarists acting in concert may potentially pose a greater threat to the conservation of native freshwater ecosystems than the individual actions of these hobbyist groups alone.…”

Section: Resultsmentioning

confidence: 99%

Hobbyists acting simultaneously as anglers and aquarists: Novel pathways for non‐native fish and impacts on native fish

Hirsch

N’Guyen

Burkhardt‐Holm

2021

Aquatic Conservation

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Human translocations of non‐native aquatic species are a global conservation challenge. Aquarists and anglers are two hobbyist groups whose practices are particularly likely to translocate non‐native aquatic species, especially fish. This article aims to stipulate a change of perspective among these hobbyists, who – by acting simultaneously as anglers and aquarists – establish novel pathways for non‐native fish. This study showed that: (i) 51 of 226 respondents to a questionnaire act simultaneously as anglers and aquarists; (ii) 53 of 237 non‐native fish species in the European Union are used for both angling and aquarium hobbies; and (iii) hobbyists write online reports on the catch and exchange of a particularly invasive fish, the round goby (Neogobius melanostomus). This combination of knowledge on how hobbyists use non‐native fish and the ecological impacts of round goby demonstrates how the impact of an invasive species can be influenced by the combined behaviours of anglers and aquarists. We suggest that future research in aquatic conservation should move beyond considering the commercial aquarium trade and angling as separate pathways for translocating non‐native fish, and instead consider these hobbyist groups as interconnected.

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“…Schyzocotyle acheilognathi was morphologically identi ed in 40.0% of the sh, representing a signi cant threat to traditional sheries (Oros et al 2015). In a more recent study, the live bait sh trade was emphasised as an important transmission vector for S. acheilognathi, to infect native sh communities (Boonthai et al 2017). The use of live bait in the USA can compromise aquaculture facilities (Kilian et al 2012) and AFT can spread to novel areas via bait-bucket introductions (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…minnows) with direct release of infected sh. Samples collected in a study from 78 retail stores in Michigan showed that bait sh had a prevalence of tapeworms as high as 58.0% (Boonthai et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The Discovery of Asian Fish Tapeworm (Schyzocotyle Acheilognathi) and Schyzocotyle Sp. In Western Australia May Pose a Threat to the Health of Endemic Native Fishes

Palermo¹,

Morgan²,

Beatty³

et al. 2021

Preprint

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PurposeThe Asian fish tapeworm (Schyzocotyle acheilognathi) is an important fish parasite with a wide host range that infects over 300 species of fish worldwide. Schyzocotyle acheilognathi has been reported from eastern coastal areas of Australia, but has not been previously reported in Western Australia (WA). MethodsDuring a control program for invasive freshwater fishes in south-western WA, a region with a unique and highly endangered freshwater fish fauna, tapeworms identified as S. acheilognathi from their distinctive scolex morphology were found at a prevalence of 3.3% in goldfish (Carassius auratus), 37.0% in koi carp (Cyprinus carpio haematopterus), and 65.0% in eastern mosquitofish (Gambusia holbrooki). For molecular confirmation, the 18S rRNA gene was targeted at hypervariable region V4 using conventional PCR and Sanger sequencing.ResultsKoi carp isolates were 100.0% identical to S. acheilognathi isolated from varying hosts including the red shiner (Cyprinella lutrensis) and a human sample. Sequences from two eastern mosquitofish were identified as S. acheilognathi, but formed a discrete subclass and may represent a novel genotype. Isolates from two other eastern mosquitofish and two goldfish formed a distinct clade with only 91.9% similarity to previously sequenced isolates of S. acheilognathi, indicating a potentially novel Schyzocotyle species. ConclusionThis emphasises the importance of molecular identification methods in addition to morphological identification. The presence and potential for spread of these parasites in south-western WA may threaten the health of native fishes, which are immunologically naïve to this introduced parasite. Immediate control or containment measures should be implemented to halt the spread of these parasites.

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The Asian fish tapeworm Schyzocotyle acheilognathi is widespread in baitfish retail stores in Michigan, USA

Cited by 21 publications

References 25 publications

What is the recorded economic cost of alien invasive fishes worldwide?

What is the recorded economic cost of alien invasive fishes worldwide?

Hobbyists acting simultaneously as anglers and aquarists: Novel pathways for non‐native fish and impacts on native fish

The Discovery of Asian Fish Tapeworm (Schyzocotyle Acheilognathi) and Schyzocotyle Sp. In Western Australia May Pose a Threat to the Health of Endemic Native Fishes

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