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

Найденко, С. В.; Hernandez-Blanco, Jose A.; Ерофеева, М. Н.; Litvinov, M. N.; Рожнов, В. В.

doi:10.24189/ncr.2019.010

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…Our data on the PP in Prionailurus bengalensis in comparison to Britov (1995), obtained earlier in the Primorsky Krai, were comparable (34.7% and 30.8%, respectively). A serological study indicated a presence of antibodies to Trichinella in 10% of P. bengalensis animals in the south of Primorsky Krai (Naidenko et al, 2019).…”

Section: Parasite Prevalencementioning

confidence: 99%

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Trichinella infection of wild carnivorans in Primorsky Krai, Russian Far East

Seryodkin¹,

Odoyevskaya²,

Konyaev³

et al. 2020

Nat. Conserv. Res.

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Nematodes of the genus Trichinella cause trichinosis, which is a zoonotic disease of humans, wild and domestic animals. In the Russian Far East, trichinosis has a natural focal character. Carnivorans (Carnivora), living in natural ecosystems including Protected Areas, are the main hosts of Trichinella. The peculiarities of Trichinella circulation in natural environment and the parasite prevalence in wild animals of different species remain poorly understood as well as the species composition of the Trichinella genus in the studied region. Muscle samples were obtained from 731 specimens belonging to 14 species and four families (Mustelidae, Ursidae, Felidae, and Canidae) in Primorsky Krai (Russia) in 2010-2020 and examined on Trichinella. The parasites were found in 124 specimens belonging to 11 species. The highest Trichinella prevalence was observed in Vulpes vulpes (64%), Ursus arctos (57%), and Lynx lynx (50%). A relatively high ratio of infected animals (30-50%) was found in Nyctereutes procyonoides, Ursus thibetanus, and Prionailurus bengalensis. The parasite prevalence was relatively low in the representatives of the Mustelidae family. Three species of the genus Trichinella (T. nativa, T. spiralis, and T. pseudospiralis) were found for carnivorans inhabiting the study area. Trichinella nativa was found the most frequently in natural ecosystems. Trichinella pseudospiralis was discovered for the first time both for P. bengalensis and for the area of the Primorsky Krai. The Carnivora ecology contributes to a high risk of infection by Trichinella species. The parasite prevalence was high in the species that combined different feeding habits, i.e. they acted as predators, scavengers and cannibals. A relatively long life expectancy also contributed to a higher risk of infection. A relatively high parasite prevalence of Trichinella in wild animals in the Primorsky Krai was caused by the high biological diversity of carnivorans. Our results are important for understanding the trichinosis circulation in natural communities and the possibility of human infestation. These data are also important for managing the carnivorans' populations in the Russian Far East. The issues of nature conservation in regard to the trichinosis circulation are also important for threatened animals, including Panthera tigris altaica.

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Section: Parasite Prevalencementioning

confidence: 99%

“…In the Amur region, all examined P. tigris (four individuals) were infected (Gorodovich & Gorodovich, 2009). In the south of the Primorsky Krai, a serological study reported on the antibodies to Trichinella in 72% of P. tigris individuals (Naidenko et al, 2019).…”

Section: Parasite Prevalencementioning

confidence: 99%

Trichinella infection of wild carnivorans in Primorsky Krai, Russian Far East

Seryodkin¹,

Odoyevskaya²,

Konyaev³

et al. 2020

Nat. Conserv. Res.

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“…The percentages of tigers and wildcats serum-positive to the same viruses did not differ significantly for any of them [75]. However, different results have been obtained for the six tested non-viral pathogens [76]. Tigers had 3-6 times higher serum prevalence of Trichinella sp.…”

Section: Discussionmentioning

confidence: 90%

“…and Toxoplasma gondii than wildcats (these differences were significant). Thus, tigers came into contact more often with some non-viral pathogens than wildcats [76].…”

Section: Discussionmentioning

confidence: 99%

Size Matters: Zoo Data Analysis Shows that the White Blood Cell Ratio Differs between Large and Small Felids

Найденко

Alshinetskiy²

2020

Animals

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The total number of white blood cells (WBCs) is related the immune system. In mammals, it is affected by the body mass, but it is unclear how the numbers of different WBC types correlate with this parameter. We analyzed the effect of body mass on WBC number and ratio in felids, where species are similar in diet (warm-blood vertebrates) and reproductive strategy (promiscuity). Based on zoo veterinary data (ZIMS database) we analyzed the effect of body mass on WBC number and neutrophils/lymphocytes ratio in 26 species of felids. The number of WBCs correlated with the body masses of animals: large cats had more WBC, which may be due to greater risks of infection associated with larger body surface, lifespan and home range size. For the first time we found obvious differences in the number of WBC types. Large cats also had more neutrophils and monocytes but fewer lymphocytes than smaller cats. The ratio of neutrophils to lymphocytes is greater in large felids. This phenomenon may be related to diet (relative prey size and kill utilization time), which suggests regular contact of large cats with bacterial and protozoal pathogens in contrast to the small cats.

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“…It has a significant effect on their behavioral responses. The greatest changes in the hormonal status are associated with the formation and maturation of the sexual function of animals, the cyclic changes in the reproductive system, as well as with the pregnancy and lactational activity of the mammary gland of females (Munro et al 1991;Andrews et al 2019;Naidenko et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Some behavior features of a female Panthera pardus tulliana during pregnancy and at first parturitions

Эртуев¹,

Semenov²

2019

Biodiversitas

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Abstract. Ertuev MM, Semenov UA. 2019. Some behavior features of a female Panthera pardus tulliana during pregnancy and at first parturitions. Biodiversitas 20: 1333-1338. The present paper reports the results of the behavioral study of a female Panthera pardus tulliana during pregnancy, and before, during and after parturitions. The study was conducted in the Center of leopard recovery in the Caucasus, located in the mountain zone of the Sochi National Park, Russia. The behavior of Panthera was observed using surveillance cameras. During pregnancy, there is a significant shift in the level and ratio of hormones in the female's body. These internal changes can cause reorganization of the brain divisions which participate in the formation of the behavioral reaction, including female's behavior. We have shown that significant changes occur in the manifestation of individual behavior forms along with the increase of the pregnancy age and the intensification of fetal growth: a decrease in the level of anxiety and fear, and an increase in feed intake. At the end of pregnancy, the frequency of sleep and rest periods increases, but they are short-term. Before parturition, a female experiences painful sensations due to increase motor activity of the fetus, accumulation of toxins, possible hypoxia.

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

Cited by 10 publications

References 30 publications

Trichinella infection of wild carnivorans in Primorsky Krai, Russian Far East

Trichinella infection of wild carnivorans in Primorsky Krai, Russian Far East

Size Matters: Zoo Data Analysis Shows that the White Blood Cell Ratio Differs between Large and Small Felids

Some behavior features of a female Panthera pardus tulliana during pregnancy and at first parturitions

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