Helminth communities of the exotic introduced turtle, Trachemys scripta elegans in southwestern Spain: Transmission from native turtles

Hidalgo-Vila, J.; Díaz‐Paniagua, Carmen; Ribas, Alexis; Florencio, Margarita; Pérez-Santigosa, Natividad; Casanova, J. C.

doi:10.1016/j.rvsc.2008.08.003

Cited by 42 publications

(32 citation statements)

References 14 publications

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“…Parasite transmission has previously been documented from indigenous wild populations of Mauremys leprosa and E. orbicularis to red-eared sliders in Spain (Hidalgo-Vila et al 2009). Host switch in the opposite direction, however, has been suggested or demonstrated only in the case of American eimerians (Apicomplexa; Segade et al 2006) and polystomes (Monogenea; Verneau et al 2011), although the pathogenic role of these organisms is presumably low.…”

Section: Discussionmentioning

confidence: 96%

First reported outbreak of severe spirorchiidiasis in Emys orbicularis, probably resulting from a parasite spillover event

Iglesias¹,

Estévez²,

Ayres³

et al. 2015

Dis. Aquat. Org.

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The importance of disease-mediated invasions and the role of parasite spillover as a substantial threat to the conservation of global biodiversity are now well known. Although competition between invasive sliders Trachemys scripta elegans and indigenous European turtles has been extensively studied, the impact of this invasive species on diseases affecting native populations is poorly known. During winter 2012−2013 an unusual event was detected in a population of Emys orbicularis (Linnaeus, 1758) inhabiting a pond system in Galicia (NW Spain). Most turtles were lethargic and some had lost mobility of limbs and tail. Necropsies were performed on 11 turtles that were found dead or dying at this site. Blood flukes belonging to the species Spirorchis elegans were found inhabiting the vascular system of 3 turtles, while numerous fluke eggs were trapped in the vascular system, brain, lung, heart, liver, kidney, spleen, and/or gastrointestinal tissues of all necropsied animals. Characteristic lesions included miliary egg granulomas, which were mostly found on serosal surfaces, particularly of the small intestine, as well as endocarditis, arteritis, and thrombosis. The most probable cause of death in the 3 turtle specimens which were also examined histologically was a necrotic enteritis with secondary bacterial infection associated with a massive egg embolism. The North American origin of S. elegans, the absence of prior recorded epizootics in the outbreak area, and the habitual presence of its type host, the highly invasive red-eared slider, in this area suggest a new case of parasite spillover resulting in a severe emerging disease. KEY WORDS: Emys orbicularis · Blood flukes · Spirorchis · Spirorchidiiasis · Mortality · Parasite spillover · Trachemys scripta Resale or republication not permitted without written consent of the publisherDis Aquat Org 113: [75][76][77][78][79][80] 2015 In this sense, competition between the red-eared slider Trachemys scripta elegans (Wied, 1838), which is included in the 20 worst invasive species in Spain (GEIB 2006), and the autochthonous turtles Emys orbicularis (Linnaeus, 1758) and Mauremys leprosa (Schweigger, 1812) has been extensively studied (Cadi & Joly 2003, 2004, Polo-Cavia 2009). In contrast, although the importance of disease-mediated invasions and the role of parasite spillover/spillback as a substantial threat to the conservation of global biodiversity have recently been highlighted (Smith et al. 2006, Peeler et al. 2011, McCallum 2012, Strauss et al. 2012, the impact of alien sliders on diseases affecting indigenous European turtles is poorly known.E. orbicularis is found in East and Central Europe, the Mediterranean countries (including some islands), and North Africa (Fritz 2001(Fritz , 2003. At present, this species is threatened and declining in several regions of its range, mainly due to habitat destruction. It is therefore included in the Bern Convention and protected by European Union laws. However, it is still listed as a lower risk/near threatened ...

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Section: Discussionmentioning

confidence: 96%

First reported outbreak of severe spirorchiidiasis in Emys orbicularis, probably resulting from a parasite spillover event

Iglesias¹,

Estévez²,

Ayres³

et al. 2015

Dis. Aquat. Org.

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“…World geographical distribution ranges of Serpinema microcephulus remain unclear but it is common in turtles of Western Europe. It has also been reported in western U.S.S.R. 1476, North Africa (Baker 1979), in Turkey isolated from Emys orbicularis (Yildirimhan and Shahin 2005), in Spain from Mauremys leprosa as well as Emys orbicularis (Hidalgo-Vila et al 2009), and in Japan from red-eared slider turtle (Trachemys scripta elegans) (Oia et al 2012).…”

Section: Discussionmentioning

confidence: 79%

Endohelminths of European pond turtle Emys orbicularis in Southwest Iran

et al. 2014

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Very little is known about parasitic diseases of European pond turtles (Emys orbicularis) in Iran. The objective of this study is to examine parasitic fauna of European pond turtles collected from Fars province, southwest Iran. Carcasses of turtles (n = 52) which died during dredging procedure are collected from earthen fishery basins in Zarghan region. They have been died earlier during dredging procedure in different farms. Three species of helminths in total were found in gastrointestinal tract, including two nematodes (Serpinema microcephalus and Falcaustra araxiana) and one digenean trematod (Telorchis assula). Large intestines of all examined turtles were infected by F. araxiana (100 %, Mean intensity = 18) and this nematode were also found in gastric nodules. Nine turtles (17.3 %, 3 male, 6 female, Mean intensity = 3) were infected with Serpinema microcephalus. T. assula were found in 25 turtles (48.07 %, 5 male, 20 female, mean intensity = 5). Helminths were not found in any examined organs and no ectoparasite found eighter. F. araxiana is the most prevalent nematode in European pond turtles. Detection of Serpinema.microcephalus is in agreement with the fact which this parasite is common parasite of turtles in all over the world. T. assula might be transmitted between variety of reptiles so presence of the trematod should be considered as a risk factor for other reptiles.

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“…The existence of two distinct lineages that differ genetically has been described in earlier studies, although this was based on a very limited number of samples and sampling locations (Lenk et al 1999;Sommer et al 2009). The scale of the invasion of al- (Najbar 2001a;Hidalgo-Vila et al 2009), the risk of hybridization (Fong & Chen 2010), and outbreeding depression (Templeton 1986). The objective of this study was to determine the diversity and distribution of mtDNA haplotypes in Polish populations of the European pond turtle, and to identify allochthonuos lineages in the populations analyzed.…”

Section: Introductionmentioning

confidence: 99%

Distribution of mitochondrial haplotypes (cytb) in Polish populations of Emys orbicularis (L., 1758)

et al. 2011

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The European pond turtle, Emys orbicularis, inhabits a wide distribution area in the western Palaearctic. Polish populations of pond turtle represent the nominotypical subspecies Emys orbicularis orbicularis. The mitochondrial DNA haplotype (cytb gene) variation among 131 turtles from 26 locations in five regions of Poland was investigated. Five haplotypes belonging to three distinct lineages were identified. Two clades (I and II) were represented by two haplotypes each, while the other clade (IV) was represented by one haplotype. Three haplotypes were reported for the first time in E. orbicularis. The eastern part of Poland is inhabited exclusively by turtles bearing haplotype Ia. The remaining four sequence variants were recorded in western Poland where only the IIb haplotype is considered endemic. The distribution of the other haplotypes in western Poland could thus reflect past introductions or accidental releases. The authors regarded the two locations (Drzeczkowo and Karpicko) that were first included in the western Poland populations as autochthonous catchment areas of haplotype Ia.

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Helminth communities of the exotic introduced turtle, Trachemys scripta elegans in southwestern Spain: Transmission from native turtles

Cited by 42 publications

References 14 publications

First reported outbreak of severe spirorchiidiasis in Emys orbicularis, probably resulting from a parasite spillover event

First reported outbreak of severe spirorchiidiasis in Emys orbicularis, probably resulting from a parasite spillover event

Endohelminths of European pond turtle Emys orbicularis in Southwest Iran

Distribution of mitochondrial haplotypes (cytb) in Polish populations of Emys orbicularis (L., 1758)

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