Helminth infections of wild European gray wolves (Canis lupus Linnaeus, 1758) in Lower Saxony, Germany, and comparison to captive wolves

Bindke, Johanna Daniela; Springer, Andrea; Janecek-Erfurth, Elisabeth; Böer, Michael; Strübe, Christina

doi:10.1007/s00436-018-6181-3

Cited by 17 publications

(16 citation statements)

References 15 publications

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“…The detection of E. granulosus s.s. as the main taeniid species and the detection of T. hydatigena in only a few samples in this wolf pack, in this specific, highly anthropic area, are particularly interesting compared to the high taeniid biodiversity detected in wolf populations living in wild mountain areas of the Apennines [22,23,49], as well as in other European countries [4,25,43] (Table 3). Also in wild, mountainous areas of the Alps, higher taeniid biodiversity was recorded compared to that detected in this study [37].…”

Section: Discussionmentioning

confidence: 91%

Taeniid cestodes in a wolf pack living in a highly anthropic hilly agro-ecosystem

et al. 2021

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The Italian wolf population in human-modified landscapes has increased greatly in the last few decades. Anthropisation increases the risk of transmission of many zoonotic infections and in this context, control of taeniid cestode species needs to be addressed from a One Health perspective. Predator-prey interactions are at the root of taeniid cestode transmission, and the wolf plays a key role in the maintenance and transmission of taeniids. To date, all available data on the taeniids of wolves in Italy refer to populations living in a wild habitat. Between 2018 and 2019, we investigated taeniids in a wolf pack living in a highly anthropic hilly agro-ecosystem. Thirty-eight faecal samples were collected and analysed, 4 of which were also genetically characterised for individual wolves and belonged to three different animals. Samples collected were analysed microscopically and by molecular analysis in order to identify the taeniid species. Taeniid eggs were detected in 34.2% (13/38) of samples. Within samples positive to taeniid eggs only Echinococcus granulosus s.s. and Taenia hydatigena were identified in 26.3% and 10.5% of the samples, respectively. On microscopic examination, Capillaria spp., Ancylostomatidae and Toxocara canis eggs, Crenosoma vulpis larvae, and coccidian oocysts were also found. The combination of low biodiversity of taeniid species with a high occurrence of E. granulosus s.s. recorded in this study could be the consequence of a deeper link occurring between wolves and livestock in human-modified landscapes than in wild settings.

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Section: Discussionmentioning

confidence: 91%

Taeniid cestodes in a wolf pack living in a highly anthropic hilly agro-ecosystem

et al. 2021

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“…The verification of a genetic similarity between metacestodes from Polish moose and adult thin-necked bladderworms from wolves across the German border allows the assumption of a possible correlation with the recolonization of wolves in Central Europe as possible final hosts of Taenia hydatigena (Filip et al 2019). Accordingly, eggs of the latter parasite were present in 13% of fecal samples investigated in the framework of a survey on the endoparasite fauna of wild European grey wolves from Germany (Bindke et al 2019). Moreover, the detection of Cysticercus tenuicollis cysts seems to be a common incidental finding in wild boar from Europe (Filip et al 2019;Sgroi et al 2019 and2020).…”

Section: Discussionmentioning

confidence: 92%

Fascioloides magna and other liver parasites in cloven-hoofed game from northeastern Bavaria, Germany: occurrence and pathological findings with special emphasis on red deer (Cervus elaphus)

Sommer¹,

Drdlicek²,

Müller³

et al. 2022

Eur J Wildl Res

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The first detection of Fascioloides (F.) magna in northeastern Bavaria in 2011 was presumably correlated to natural migration movements of free ranging wild ruminants originating from the neighboring Czech Republic, where high infection rates have been reported frequently. To gain more data on the continuing spreading and current occurrence of the giant liver fluke in surrounding regions, 700 livers of cloven-hoofed game originating from eleven different northeastern Bavarian counties were investigated for the presence of F. magna and accompanying liver parasites in the hunting season 2019–2020. Macroscopically altered liver tissue was further investigated by pathohistological and parasitological examination. F. magna was detected in 5.9% (38/640) of livers from red deer (0.7% < 1 year, 9.8% > 1 year; p < 0.05) whereas none of the investigated livers of wild boar, roe, and fallow deer was infected (n=60). Mild pathological alterations of the liver tissue were documented in 15, moderate in 14, and major in 9 of all F. magna-positive cases. Histologically, the fluke-specific pigment haematin, large trematode eggs, and periportal fibrosis were detected in the liver tissue of infected animals. In 9% of all investigated livers, parasitic stages of other parasites, i.e., Dicrocoelium dendriticum (6.0%), Fasciola hepatica (0.3%), Taenia spp. (1.7%), and Echinococcus multilocularis (1.0%), were found. According to the results of this study, F. magna is not restricted to formerly known affected regions of Upper Franconia, but is also present in the military training ground Grafenwöhr, Upper Palatinate, and the Bavarian Forest National Park, Lower Bavaria, with estimated prevalences of 3.6 and 16.4%, respectively, and thus seems to spread in suitable habitats in northeastern Bavaria.

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“…However, the proportion of highly susceptible cubs (=puppies), is much higher in the fox population (around 30 % of the total population in spring as compared with around 5–15 % puppies <6 month of age in the dog population in industrialized societies). Toxocara canis prevalence in wild carnivores other than foxes appears to be generally lower, with study findings ranging between 19 % ( Bridger et al, 2009 ) and 24 % ( Redman et al, 2016 ) in coyotes, between 0.2 and 2% in wolves in Canada ( Wapenaar et al, 2013 ) and up to 13 % in Europe ( Bindke et al, 2019 ; Bryan et al, 2012 ; Szafrańska et al, 2010 ), and up to 14 % in golden jackals in Asia ( Siyadatpanah et al, 2019 ). Thus, overlapping wildlife and domestic parasite transmission, the combination of diverse refugia and other factors mentioned above may explain why AR evolution in T. canis has essentially not been observed.…”

Section: What Is Different In Dogs and Cats Concerning Occurrence Treatment And Control Of Intestinal Parasites Compared With Ruminants Amentioning

confidence: 98%

Spread of anthelmintic resistance in intestinal helminths of dogs and cats is currently less pronounced than in ruminants and horses – Yet it is of major concern

Samson‐Himmelstjerna

Thompson

Krücken

et al. 2021

International Journal for Parasitology: Drugs and Drug Resistan

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Anthelmintic resistance (AR) has thus far only rarely been reported for intestinal helminths of dogs and cats, in contrast to parasites of livestock and horses. We highlight possible reasons for this striking and important discrepancy, including ecological, biological and genetic factors and/or intervention regimens of key intestinal helminths concerning both host groups. In view of the current knowledge related to the genetics, mechanisms and principles of AR development, we point at issues which in our view contribute to a comparatively lower risk of AR development in intestinal helminths of dogs and cats. Finally, we specify research needs and provide recommendations by which, based on the available information about AR in ruminant and equine helminths, the development of AR in dog and cat helminths may best be documented, prevented or at least postponed.

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Helminth infections of wild European gray wolves (Canis lupus Linnaeus, 1758) in Lower Saxony, Germany, and comparison to captive wolves

Cited by 17 publications

References 15 publications

Taeniid cestodes in a wolf pack living in a highly anthropic hilly agro-ecosystem

Taeniid cestodes in a wolf pack living in a highly anthropic hilly agro-ecosystem

Fascioloides magna and other liver parasites in cloven-hoofed game from northeastern Bavaria, Germany: occurrence and pathological findings with special emphasis on red deer (Cervus elaphus)

Spread of anthelmintic resistance in intestinal helminths of dogs and cats is currently less pronounced than in ruminants and horses – Yet it is of major concern

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