First morphological and molecular report of Lagochilascaris minor (Nematoda, Ascarididae) in a domestic cat from Veracruz, Mexico

Rodríguez-Vivas, Róger Iván; Salazar-Grosskelwing, Enrique; Ojeda-Chí, Melina Maribel; Flota-Burgos, Gabriela J; Solano-Barquero, Alberto; Trinidad-Martínez, Iris; Rojas, Alicia

doi:10.1016/j.vprsr.2022.100823

Cited by 1 publication

(2 citation statements)

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“…Regarding the parasitological evaluation of the crab-eating fox, non-embryonated ascarid-type eggs (51.21 × 51.57 μm) with a thick eggshell and a coarsely pitted surface containing multiple excavations were observed ( Figure 3A ). The morphological traits of the egg correspond well to Lagochilascaris minor, previously described in South American wild carnivore definitive hosts ( 37 , 38 ). Additionally, parasite stages (i.e., adults and eggs) of the diphyllobothriidean species Spirometra mansoni were detected.…”

Section: Resultssupporting

confidence: 81%

“…The detection of the ascarid nematode genus Lagochilascaris raises public health concerns since human lagochilascariosis, mainly due to L. minor, is still an extremely neglected zoonotic disease of the Neotropics. The definitive hosts are carnivores (i.e., canids and felids) carrying intestinal adults that shed highly resistant ascarid-like eggs with a thick and rough eggshell ( 37 , 80 ). Humans acquire lagochilascariosis through the ingestion of infected rodent IH (e.g., agoutis, mice, rats) containing third-stage larvae (L3), but there is also evidence that humans might become infected after ingestion of embryonated eggs of Lagochilascaris ( 81 ).…”

Section: Discussionmentioning

confidence: 99%

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Neglected zoonotic helminthiases in wild canids: new insights from South America

et al. 2023

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The global threat of neglected tropical diseases (NTDs) constitutes a public health issue in underdeveloped countries. Zoonotic helminthiases are the most common human NTD agents in developing countries in sub-Saharan Africa, Asia, and the Americas, causing a global burden of disease that exceeds that of more recognized infectious diseases such as malaria and tuberculosis. Wild canids are well-known mammals that act as natural reservoirs of zoonotic-relevant helminthiasis worldwide, thus playing a pivotal role in their epidemiology and transmission to humans. Here we evaluate the occurrence of zoonotic gastrointestinal helminths in two Neotropical wild canid species from the Amazonian and Andean regions of Colombia, i.e., the bush dog (Speothos venaticus) and the crab-eating fox (Cerdocyon thous). We recovered tapeworm proglottids from bush dog fecal samples and identified them molecularly as the canine-specific lineage of Dipylidium caninum by using cytochrome c oxidase subunit I (cox1) gene sequences. Moreover, examination of a crab-eating fox during necropsy revealed the presence of non-embryonated eggs of the neglected nematode Lagochilascaris cf. minor, in addition to eggs and gravid proglottids of the cestode Spirometra mansoni. These findings represent the first report of zoonotic-relevant cestodes, i.e., D. caninum (“canine genotype”), S. mansoni, and the nematode L. cf. minor, in bush dogs and crab-eating foxes as final hosts. The occurrence of these zoonotic helminthiases in wild canid species calls for regular monitoring programs to better understand the epidemiology and transmission routes of neglected dipylidiasis, lagochilascariosis, and sparganosis in South America.

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Section: Resultssupporting

confidence: 81%