High infectivity of Toxocara cati larvae from muscles of experimentally infected rats

Taira, Kensuke; Yanagida, Tomonori; Akazawa, Naoko; Saitoh, Yasuhide

doi:10.1016/j.vetpar.2013.03.012

Cited by 15 publications

(2 citation statements)

References 13 publications

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“…Similarly, the wild boar could take both rodents and earthworm as its diet [26], as well as the earthworm appeared in the diets of the rodent [27]. Besides, the earthworm could carry T. cati [28,29], and T. cati appeared in wild boars and rodents served as potential paratenic hosts of T. cati, and contributed to persisting in the environment have been found [30,31]. If the rodent, which taken larva of T. cati from earthworm, was preyed by the wild boar, as well as the wild boar, it taken larva of T. cati from earthworm or from rodent, was preyed by the tiger, the tiger will be infected by the T. cati through this food-chain transmission way (Fig.…”

Section: Discussionmentioning

confidence: 99%

Ascarid infection in wild Amur tigers (Panthera tigris altaica) in China

Peng

Yao

Liu³

et al. 2020

BMC Vet Res

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Background: Wild Amur tigers are a sparsely populated species, and the conservation of this species is of great concern worldwide, but as an important health risk factor, parasite infection in them is not fully understanding. Results: In this study, sixty-two faecal samples were collected to investigate the frequency and infection intensity of Toxocara cati and Toxascaris leonina in wild Amur tigers. The T. cati and T. leonina eggs were preliminary identified by microscopy, and confirmed by molecular techniques. Infection intensity was determined by the modified McMaster technique. Phylogenetic trees demonstrated that T. cati of wild Amur tiger had a closer relationship with which of other wild felines than that of domestic cats. T. leonina of Amur tiger and other felines clustered into one clade, showing a closer relationship than canines. The average frequency of T. cati was 77.42% (48/62), and the frequency in 2016 (100%) were higher than those in 2013 (P = 0.051, < 0.1; 66.6%) and 2014 (P = 0.079, < 0.1; 72.2%). The infection intensity of T. cati ranged from 316.6 n/g to 1084.1 n/g. For T. leonina, only three samples presented eggs when the saturated sodium chloride floating method was performed, indicating that the frequency is 4.83% (3/62). Unfortunately, the egg number in faecal smears is lower than the detective limitation, so the infection intensity of T. leonina is missed. Conclusions: This study demonstrated that ascarids are broadly prevalent, and T. cati is a dominant parasite species in the wild Amur tiger population.

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Section: Discussionmentioning

confidence: 99%

Ascarid infection in wild Amur tigers (Panthera tigris altaica) in China

Peng

Yao

Liu³

et al. 2020

BMC Vet Res

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“…Researchers proved that chicken viscera infected with T. cati could cause toxocariasis (1, 21). Additionally, it was found that half of visceral T. cati larvae obtained from previously inoculated rats remained infective for mice for at least six months (22). These data strongly indicate that small rodents as paratenic hosts might be involved in transmission of Toxocara spp.…”

Section: Discussionmentioning

confidence: 99%

Histopathological lesions caused by experimental Toxocara canis and Toxascaris leonina infections in farm mink (Neovison vison)

Klockiewicz

Sobczak-Filipiak

Jakubowski

et al. 2019

Journal of Veterinary Research

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Introduction: Canine roundworm T. canis and T. leonina infections were investigated in experimentally infected farm mink (Neovison vison) to describe the pattern of pathological lesions in this paratenic host. Material and Methods: Infections in mink developed following ingestion of embryonated eggs of either parasite or mice tissue infected with both parasite species. Results: Comparative analysis of haematoxylin- and eosin-stained slides showed essential differences among the experimental groups. The lesions observed included eosinophil and mononuclear inflammatory infiltrates of the intestinal wall and local lymph nodes, inflammation and haemorrhages in liver tissues, and interstitial inflammation and mineralisation of the kidneys and lungs. Larvae migrating through the minks’ bodies also caused particularly salient enlargement of lymphoid follicles in the spleen and inflammatory infiltrates of mononuclear cells in skeletal and heart muscles. Conclusions: It is assumed that histopathological lesions appeared as a local and general host response to invasive L3 T. canis and T. leonina larvae migrating through the tissues of infected farm mink. Interestingly, mink infected with embryonated eggs had more pronounced lesions than animals infected with tissue larvae. Detailed histopathological examinations of parenchymal organs and striated muscles revealed lesions resembling those observed in other paratenic host species due to toxocarosis.

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Toxocara Species of Carnivores

Mehlhorn

2015

Encyclopedia of Parasitology

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High infectivity of Toxocara cati larvae from muscles of experimentally infected rats

Cited by 15 publications

References 13 publications

Ascarid infection in wild Amur tigers (Panthera tigris altaica) in China

Ascarid infection in wild Amur tigers (Panthera tigris altaica) in China

Histopathological lesions caused by experimental Toxocara canis and Toxascaris leonina infections in farm mink (Neovison vison)

Toxocara Species of Carnivores

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