Hunting Practices Increase the Prevalence of Trichinella Infection in Wolves from European Russia

Pozio, Edoardo; Casulli, Adriano; Bologov, Vladimir V.; Marucci, Gianluca; Rosa, G. La

doi:10.2307/3285332

Cited by 21 publications

(29 citation statements)

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“…T. nativa infection was also detected in a natural population of wolves in the Tvier and Smolensk regions of northwest European Russia. The very high prevalence of infection with this species was explained by the human impact on the natural ecosystem, especially, the hunting practices where animal carcasses were left in the forest as a bait Pozio et al, 2001). In four animals, mixed infection with two Trichinella species was detected.…”

Section: Discussionmentioning

confidence: 98%

Molecular identification of Trichinella isolates from wildlife animals of the Russian Arctic territories

et al. 2017

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SummaryThe parasitic nematodes of genus Trichinella are infective to a wide range of hosts, including humans, and have global distribution from tropic to arctic areas. Muscle samples from animals, collected in two areas of the Russian Federation, Chukotka Peninsula and Arkhangelsk Oblast, were tested for the presence of Trichinella spp. larvae. Trichinella spp. larvae were recovered from tissues of eleven wild and domestic animals: 1 polar bear, 1 wolverine, 3 arctic foxes, 1 ringed seal, 1 brown bear, 1 cat, 1 sled dog, 1 domestic pig and 1 northern sea lion. Two molecular methods, multiplex PCR and inter-simple sequence repeat polymerase chain reaction (ISSR PCR), were utilized for species identifi cation. T. nativa was identifi ed in the majority of tested animals and mixed infections with two Trichinella species were detected in four animals. T. spiralis/T. pseudospiralis mixed infection was found in a domestic pig and T. spiralis/T. nativa in two arctic foxes and a northern sea lion. Here, for the fi rst time, Trichinella spp. infection in a northern sea lion and the northern sea lion as a new host for T. spiralis and T. nativa is reported. Discovery of Trichinella spp. infection in a new host, such as a northern sea lion, which is an opportunistic marine predator, mainly feeding on fi sh, indicates environmental contamination. Leaving of carcasses or waste from animals and improper management of livestock operations is important for spreading Trichinella spp. infection in free living animals. Therefore, further extensive epidemiological and environmental research and molecular studies are needed to investigate the local fauna.

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Section: Discussionmentioning

confidence: 98%

Molecular identification of Trichinella isolates from wildlife animals of the Russian Arctic territories

et al. 2017

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“…A very close relationship between the conventional hunter's practice to leave animal carcasses in the field after skinning and the prevalence of trichinellosis among wildlife has been documented in arctic and subarctic regions, northern Kazakhstan, New Hampshire, Extremadura (Spain), and northwest European Russia (7,85,117,120,131,162). When humans fail to implement a proper management of domestic animals and wildlife, Trichinella (especially T. spiralis but also T. britovi and T. pseudospiralis) infection is transmitted from the sylvatic environment into the domestic one, sometimes through synanthropic (intermediary between domestic and sylvatic) animals (125).…”

Section: Control Of Trichinella Infection In Wildlifementioning

confidence: 99%

“…3). The main hosts are terrestrial (e.g., brown and black bears, wolverines, raccoons, lynxes, wolves, and foxes) and marine (e.g., polar bears, walruses, and seals) carnivores (23,39,66,80,131). This species developed the ability of muscle-stage larvae to survive in frozen muscles of carnivores for up to 5 years (23).…”

Section: Species and Taxonomymentioning

confidence: 99%

Epidemiology, Diagnosis, Treatment, and Control of Trichinellosis

2009

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SUMMARY Throughout much of the world, Trichinella spp. are found to be the causative agents of human trichinellosis, a disease that not only is a public health hazard by affecting human patients but also represents an economic problem in porcine animal production and food safety. Due to the predominantly zoonotic importance of infection, the main efforts in many countries have focused on the control of Trichinella or the elimination of Trichinella from the food chain. The most important source of human infection worldwide is the domestic pig, but, e.g., in Europe, meats of horses and wild boars have played a significant role during outbreaks within the past 3 decades. Infection of humans occurs with the ingestion of Trichinella larvae that are encysted in muscle tissue of domestic or wild animal meat. Early clinical diagnosis of trichinellosis is rather difficult because pathognomonic signs or symptoms are lacking. Subsequent chronic forms of the disease are not easy to diagnose, irrespective of parameters including clinical findings, laboratory findings (nonspecific laboratory parameters such as eosinophilia, muscle enzymes, and serology), and epidemiological investigations. New regulations laying down rules for official controls for Trichinella in meat in order to improve food safety for consumers have recently been released in Europe. The evidence that the disease can be monitored and to some extent controlled with a rigorous reporting and testing system in place should be motivation to expand appropriate programs worldwide.

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“…Further studies confirmed an increase in Trichinella prevalence in foxes, as well as the dominant status of T. britovi among Trichinella species circulating in the sylvatic environment (14). (21). In view of the above, T. britovi from Russia might be associated with the sylvatic habitat.…”

Section: Resultsmentioning

confidence: 57%

Prevalence of Trichinella britovi in muscle tissue samples from foxes from Podkarpackie Voivodeship, Poland

Wisniewski¹,

Bełkot²,

Orłowska³

et al. 2016

Medycyna Weterynaryjna

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The aim of the study was to detect Trichinella larvae in muscle tissue samples of red foxes (Vulpes vulpes) living in Podkarpackie Voivodeship and to determine their species composition. Muscle tissue samples had been collected from a total number of 139 red foxes culled during 2011-2012 in Podkarpackie Voivodeship and studied for the presence of Trichinella. Ten-gram muscle tissue samples were collected from each animal, combined into a fifty-gram pooled sample and then tested for the presence of Trichinella by the reference method for pooled sample digestion with a magnetic stirrer. Whenever a pooled sample gave a positive result, the suspected animals were resampled, and each ten-gram muscle tissue sample was tested separately. Trichinella larvae were identified to species by Multiplex PCR. The studies revealed the presence of one Trichinella larva in a pooled sample composed of five individual samples from foxes culled in the following locations: Leszczowate in Bieszczadzki District (one sample), Szczutków in Lubaczowski District (two samples), Podemszczyzna in Lubaczowski District (one sample) and Strzyżów in Strzyżowski District (one sample). No Trichinella larvae were detected during the test carried out on individual samples that composed the pooled sample. Numerous Trichinella larvae were found in samples from 4 foxes coming from Berezka and Glinka in Leski District, Dybawka in Przemyski District, and Golcowa in Brzozowski District. All Trichinella larvae isolated from the foxes belonged to the species T. britovi. The study confirmed the role of foxes as an important vector of Trichinella larvae circulating in the habitat of humans and animals. T. britovi is a species occurring most frequently in the fox population.

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Hunting Practices Increase the Prevalence of Trichinella Infection in Wolves from European Russia

Cited by 21 publications

References 0 publications

Molecular identification of Trichinella isolates from wildlife animals of the Russian Arctic territories

Molecular identification of Trichinella isolates from wildlife animals of the Russian Arctic territories

Epidemiology, Diagnosis, Treatment, and Control of Trichinellosis

Prevalence of Trichinella britovi in muscle tissue samples from foxes from Podkarpackie Voivodeship, Poland

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