Achatina fulica infected by Angiostrongylus cantonensis on beaches, in the west zone of Rio de Janeiro, Brazil

Bechara, André H.; Simões, Raquel de Oliveira; Faro, Marta Julia; Garcia, Juberlan Silva

doi:10.1590/s1678-9946201860004

Cited by 4 publications

(6 citation statements)

References 18 publications

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“…Significantly ( P = 0.007) more studies were based on the collection of specimens during the daylight period ( n = 14 papers), in particular in South America (Moreira et al , 2013; Peng et al , 2017; Bechara et al , 2018; Ramos-de-Souza et al , 2018; Silva et al , 2020; Souza et al , 2021), with only five surveys being conducted at night (Lim & Heyneman, 1965; Morocoima et al , 2014; Cuasapaz-Sarabia, 2016; Peng et al , 2017; Bechara et al , 2018), and thirty-two studies did not specify the collection period (online supplementary file table S2). Five studies referred to the collection of specimens during the rainy season (Caldeira et al , 2007; Vitta et al , 2011; Andrade-Porto et al , 2012; Cuasapaz-Sarabia, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…Some studies also used morphometric parameters and movement patterns to identify the nematodes (Meijides-Mejías & Robledo, 2019), as a complement to the morphological identification. In this case, an adequate diagnosis requires the analysis of both the males and the females (Oliveira et al, 2010; Silva et al, 2020), which may require the experimental infection (Bechara et al, 2018) of the definitive host to obtain the largest possible number of diagnostic characteristics. However, it takes approximately 30 days to obtain the adult forms and, ideally, they should be identified by a taxonomic specialist (Carvalho et al, 2012; Bechara et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

“…In this case, an adequate diagnosis requires the analysis of both the males and the females (Oliveira et al, 2010; Silva et al, 2020), which may require the experimental infection (Bechara et al, 2018) of the definitive host to obtain the largest possible number of diagnostic characteristics. However, it takes approximately 30 days to obtain the adult forms and, ideally, they should be identified by a taxonomic specialist (Carvalho et al, 2012; Bechara et al, 2018). The examination of cysts was also used in some cases (Oliveira & Santos, 2018), although this may not be adequate for the identification of species, given that some species of different genera may present similar characteristics in the intermediate host.…”

Section: Discussionmentioning

confidence: 99%

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The invasive giant African land snail,Achatina fulica(Gastropoda: Pulmonata): global geographical distribution of this species as host of nematodes of medical and veterinary importance

et al. 2022

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The giant African land snail, Achatina fulica, is an important invasive species in many countries, where it causes losses in biodiversity and agriculture, as well as impacting the health of both humans and animals, as the intermediate host of medically important nematodes. The present study is based on a comprehensive review of the literature on the nematodes that have been found in association with A. fulica, worldwide. We searched a number of different databases and used the findings to investigate the methods used to extract and identify the nematodes, their larval stages, and environment and collecting procedures of the infected molluscs. Between 1965 and 2021, 11 nematode species were recorded in association with A. fulica in 21 countries. Most of the studies recorded associations between A. fulica and Angiostrongylus cantonensis, which causes cerebral angiostrongyliasis in humans and Aelurostrongylus abstrusus, which provokes pneumonia in felines. The nematodes were extracted primarily by artificial digestion with hydrochloric acid or pepsin, and identified based on their morphology or through experimental infection to obtain the adult. In most cases, the nematodes were at larval stage L3, and the infected A. fulica were collected from anthropogenic environments. The results demonstrate the importance of A. fulica as a host of nematodes of medical and veterinary importance, as well the contribution of anthropogenic environments to the occurrence of the parasites, and give information about the different methods used to collect and identify the nematodes found associated with this species.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The invasive giant African land snail,Achatina fulica(Gastropoda: Pulmonata): global geographical distribution of this species as host of nematodes of medical and veterinary importance

et al. 2022

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“…This slug has been found infected naturally with both A. cantonensis and A. costaricensis (Laitano et al 2001, Caldeira et al 2007, Carvalho et al 2012. Angiostrongylus cantonensis has been recorded in the Brazilian state of Rio de Janeiro by Oliveira et al (2015) and Bechara et al (2018).…”

Section: Speciesmentioning

confidence: 95%

Diversity and abundance of terrestrial molluscs and their associated nematode fauna in urban kitchen gardens in the city of Rio de Janeiro, Brazil

Oliveira

Rodrigues

Decanine

et al. 2023

An. Acad. Bras. Ciênc.

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Terrestrial molluscs can become agricultural pests and transmit parasites, playing an important role in different biological communities. In the present study, we evaluated the diversity and abundance of this group in two horticultural areas in Rio de Janeiro (Manguinhos and Jacarepaguá neighborhoods), as well the presence of parasitic nematodes associated with these molluscs. We collected specimens in the austral spring and summer, with four sites being sampled within each study area, including malabar spinach, sweet potato, chicory greens, and cassava plantations, and one site in an adjacent, non-cultivated area. We collected a total of 522 live mollusc specimens and identified 16 species from 10 different families. The greatest abundance of molluscs was recorded in summer (363) and at Jacarepaguá (309). Overall, 174 (57%) of the 303 specimens analyzed parasitologically were positive for nematodes. Larvae of superfamily Metastrongyloidea, which includes nematodes that are a concern for public health and veterinary medicine, were found parasitizing the slug Sarasinula linguaeformis, in Manguinhos. Our results contribute to understanding of the diversity of terrestrial molluscs occurring in kitchen gardens in the city of Rio de Janeiro, and provide important insights for generating subsidies for health education actions and control of parasitic diseases transmitted by them.

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“…The giant African snail, Achatina fulica (Mollusca, Gastropoda), has been found naturally infected with A. cantonensis in the Brazilian states of Pará, Pernambuco, Rio de Janeiro, Espírito Santo, São Paulo and Santa Catarina (Bechara et al, 2018;Oliveira et al, 2015;Moreira et al, 2013;Carvalho et al, 2012;Thiengo et al, 2010;Maldonado Junior et al, 2010;Caldeira et al, 2007). Lv et al (2009aLv et al ( , 2008 also mentioned this disease as emerging in China as a result of changes in food consumption habits and long-distance transportation of food, stating that the disease occurrence seems to be related to the spread of two invasive snail species (A. fulica and Pomacea canaliculata).…”

Section: Introductionmentioning

confidence: 99%

First record of Bulimulus tenuissimus (Mollusca) as potential experimental intermediate host of Angiostrongylus cantonensis (Nematoda)

et al. 2019

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Snails are essential to complete the life cycle of the metastrongylid nematode Angiostrongylus cantonensis, the causative agent of infections in domestic and wild animals, mainly rodents, and also of neural angiostrongyliasis or eosinophilic meningitis in humans. There are many reports of mollusks that can act as intermediate hosts of this parasite, especially freshwater snails and the African giant Achatina fulica. The terrestrial gastropod Bulimulus tenuissimus is widely distributed in Brazil and other species of the same genus occur in Brazil and other countries, overlapping regions in which there are reports of the occurrence of A. cantonensis and angiostrongyliasis. In spite of this, there are no records in the literature of this species performing the role of intermediate host to A. cantonensis. The present study analyzed the experimental infection with first-stage larvae of A. cantonensis, under laboratory conditions, of B. tenuissimus, by using histology and electron microscopy techniques. Three weeks after exposure to L1 larvae, it was possible to recover L3 larvae in small numbers from the infected snails. Developing larvae were observed in the cephalopedal mass (foot), ovotestis, and mantle tissues, being located inside a granulomatous structure composed of hemocyte infiltration, but there was no calcium or collagen deposition in these structures in significant amounts. In the third week post exposure, it was possible observe a sheath around the developing larvae. The infected snails presented reduction in the fibrous muscular tissue in the foot region, loss of the acinar organization in the digestive gland, with increase of amorphous material inside the acini and loss of epithelial pattern of nuclear organization in the acinar cells. However, the ovotestis seemed unaffected by the infection, since there was a large number of developing oocytes and spermatozoa in different stages of formation. The digestion of infected snails allows us the third-stage recovery rate of 17.25%, at 14 days post exposure to the L1. These L3 recovered from B. tenuissimus were used to infect rats experimentally, and 43 days post infection first-stage (L1) larvae of A. cantonensis were recovered from fresh feces. The results presented constituted the first report of the role of B. tenuissimus as an experimental intermediate host to A. cantonensis and shed some light on a possible problem, since the overlapping distribution of B. tenuissimus and A. cantonensis in Brazil and other countries where different species of Bulimulus occur enables the establishment and maintenance of the life cycle of this parasite in nature, with wild rodents as reservoirs, acting as a source of infection to humans, causing neural angiostrongyliasis.

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Achatina fulica infected by Angiostrongylus cantonensis on beaches, in the west zone of Rio de Janeiro, Brazil

Cited by 4 publications

References 18 publications

The invasive giant African land snail,Achatina fulica(Gastropoda: Pulmonata): global geographical distribution of this species as host of nematodes of medical and veterinary importance

The invasive giant African land snail,Achatina fulica(Gastropoda: Pulmonata): global geographical distribution of this species as host of nematodes of medical and veterinary importance

Diversity and abundance of terrestrial molluscs and their associated nematode fauna in urban kitchen gardens in the city of Rio de Janeiro, Brazil

First record of Bulimulus tenuissimus (Mollusca) as potential experimental intermediate host of Angiostrongylus cantonensis (Nematoda)

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