Serum Prevalence of Bears in the Russian Far East to Different Pathogens

Найденко, С. В.; Hernandez-Blanco, Jose A.; Seryodkin, Ivan V.; Miquelle, Dale G.; Blidchenko, Ekaterina Yu.; Litvinov, Michael; Kotlyar, A. K.; Рожнов, В. В.

doi:10.1134/s1062359019080089

Cited by 6 publications

(6 citation statements)

References 27 publications

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“…We did not find antibodies to this pathogen in leopards, although earlier studies found serum positive leopards in this region (Goodrich et al, 2012b). It seems that this pathogen occurs in this region quite often (see also Naidenko et al, 2018b, and this study), at least much more often than in dry areas (Naidenko et al, 2014;Pavlova et al, 2016).…”

Section: Discussionsupporting

confidence: 62%

“…We did not find animals that were seropositive to Coxiella burnetii among the four wild felids. An earlier study (Naidenko et al, 2018b) did not find antibodies to this pathogen in bears in the Russian Far East either. It seems that this pathogen is extremely rare in Carnivores of the Russian Far East.…”

Section: Discussionmentioning

confidence: 70%

“…An earlier study found an animal serum positive to Mycoplasma among domestic cats (Goncharuk et al, 2012). These pathogens were also found in bears in the Russian Far East (Naidenko et al, 2018b). They do not have a lethal effect but may influence the animal's body condition.…”

Section: Discussionmentioning

confidence: 90%

“…Although, the effect of genetic diversity on serum prevalence to Candida is unclear yet, large cats had a higher index of it than the smaller ones. This pathogen also occurs in bears in the Russian Far East -more than 50% were serum positive to Candida (Naidenko et al, 2018b).…”

Section: Discussionmentioning

confidence: 99%

“…There is only one study on serum prevalence of bears (Ursus spp.) (Naidenko et al, 2018b). It described interspecific differences in serum prevalence to Toxoplasma gondii and Trichinella sp.…”

mentioning

confidence: 99%

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Serum prevalence to non-viral pathogens in wild felids of Southern Primorye, Russia

et al. 2019

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Serum prevalence to six different non-viral pathogens was estimated for big Russian cats (Amur tiger (Panthera tigris altaica) and the Far Eastern leopard (Panthera pardus orientalis)) in Southern Primorye, Russia (n = 26) in 2008-2016. Serum samples from smaller cats (Eurasian lynx (Lynx lynx) and Far Eastern wildcat (Prionailurus bengalensis euptilurus)) were also tested for these pathogens (n = 28) during the same period. Felids of Russian Southern Primorye showed serum prevalence to five out of six tested pathogens. Antibodies to Candida sp. and Trichinella sp. were found to be much more widespread in cats (47% and 42%) than antibodies to other tested pathogens (20% and less). Large cats demonstrated a higher serum prevalence to these pathogens than smaller ones. We did not detect animals seropositive to Coxiella burnetii.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Serum prevalence to non-viral pathogens in wild felids of Southern Primorye, Russia

et al. 2019

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Environmental stressors and zoonoses in the Arctic: Learning from the past to prepare for the future

Andersen-Ranberg,

Nymo,

Jokelainen

et al. 2024

Science of The Total Environment

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Epidemiological Survey of Canine Distemper Virus Infection: Exploring the Link Between Virus Spread and Invasive Raccoon (Procyon lotor) Population Growth in Hokkaido, Japan

Minamikawa,

Ito,

Kovba

et al. 2024

Integr. Zool.

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Invasive raccoons (Procyon lotor) naturalized in Hokkaido, Japan, potentially spreading infectious diseases. Canine distemper virus infection is a serious epizootic disease, for which the raccoon is one of the hosts. We investigated the virus's prevalence in Hokkaido's wild raccoons, using 611 serum samples collected from captured raccoons in 2007–2012, 2021, and 2022. Higher seropositivity rates were confirmed in 2007 (32.7%), 2021 (46.4%), and 2022 (46.8%) than in 2008–2012 (0.00%–6.06%), suggesting the occurrence of an epidemic in 2007, 2021, and 2022 and its disappearance in 2008–2012. However, the infection status has recently changed, with high seropositivity rates consecutively confirmed in 2021 and 2022. Logistic regression analysis was performed to investigate the relationships among the catch per unit effort (an index of animal population density), host and environmental factors, and antibody status. The catch per unit effort correlated with seropositivity in 2007. As for environmental factors, the forest area ratio had a weak influence on seroprevalence in 2007; however, the residential area ratio had a clear influence on seroprevalence in 2021 and 2022. The epidemic occurred in forested areas in 2007; nonetheless, recent raccoon population growth and habitat expansion may have caused widespread infections even around residential areas in 2021 and 2022. Continuous monitoring of the infection and reinforcement of raccoon control programs are necessary to avoid serious damage through disease transmission to sympatric native raccoon dog (Nyctereutes procyonoides) and fox (Vulpes vulpes) populations, as well as health consequences for domestic dogs (Canis familiaris).

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Serum Prevalence of Bears in the Russian Far East to Different Pathogens

Cited by 6 publications

References 27 publications

Serum prevalence to non-viral pathogens in wild felids of Southern Primorye, Russia

Serum prevalence to non-viral pathogens in wild felids of Southern Primorye, Russia

Environmental stressors and zoonoses in the Arctic: Learning from the past to prepare for the future

Epidemiological Survey of Canine Distemper Virus Infection: Exploring the Link Between Virus Spread and Invasive Raccoon (Procyon lotor) Population Growth in Hokkaido, Japan

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