An integrative study of the invasive jumping-snail Ovachlamys fulgens (Gastropoda, Helicarionidae) in Rio de Janeiro and its fast spreading in Southeastern and Southern Brazil

Marchi, Carolina R.; Corrêa-Antônio, Jessica; Rodrigues, Paulo Sergio; Fernandez, Mônica Ammon; Thiengo, Silvana Carvalho; Barbosa, Helene Santos; Gomes, Suzete Rodrigues

doi:10.1590/0001-3765202120190138

Cited by 4 publications

(4 citation statements)

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“…While many exotic species, including Gulella bicolor above, have been present in Brazil for some time [ 24 , 40 , 41 ], two recently-detected species warrant further discussion. The Japanese jumping snail Ovachlamys fulgens (Gude, 1900) was first detected in São Paulo state [ 42 ] and later recorded from Rio de Janeiro to Santa Catarina states [ 43 ]. A record from late 2021 on iNaturalist extends this distribution to the north, to Espírito Santo state (observation 98824918), indicating a rapid spread of this species in the country.…”

Section: Discussionmentioning

confidence: 99%

iNaturalist as a tool in the study of tropical molluscs

Cavallari‬

Salvador

2022

PLoS ONE

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Although terrestrial gastropods are remarkably diverse, our knowledge of them is still lacking, especially for species from the Global South. As such, new tools to help researchers collect data on these organisms are very welcome. With this in mind, we investigated Brazilian observations on iNaturalist to assess the feasibility of the data available on the platform as a basis for studies on the tropical terrestrial gastropod fauna. The observations on iNaturalist were filtered by country, Brazil, and higher taxa, namely Eupulmonata, Cyclophoroidea and Helicinoidea, yielding a sample of 4,983 observations. These observations were then reviewed in search of records of rare or little-known species, species found outside their previously known range, and interesting ecological interactions. Exotic species made up 35% to 39% of the sampled iNaturalist records. The most commonly observed species were Lissachatina fulica (Bowdich, 1822), Bradybaena similaris (Férussac, 1822), Drymaeus papyraceus (Mawe, 1823), Drymaeus interpunctus (E. von Martens, 1887), Limacus flavus (Linnaeus, 1758), Meghimatium pictum (Stoliczka, 1873), Cornu aspersum (O. F. Müller, 1774), Vaginulus taunaisii (Férussac, 1821), Ovachlamys fulgens (Gude, 1900), and Bulimulus tenuissimus (Férussac, 1832). In total, 166 observations were deemed of interest to our purposes (e.g., rare species, range extensions, ecological interactions), totalling 46 identified species and 16 observations identified at genus level. Among the selected observations, we found pictures of live specimens of species that were previously known only from their shells, such as Megalobulimus pergranulatus (Pilsbry, 1901), bringing to light their appearances in life. Two potentially new species belonging to the genera Plekocheilus Guilding, 1827 and Megalobulimus K. Miller, 1878 were revealed. Additionally, we found records of living individuals of two species that were previously presumed to be possibly extinct, Leiostracus carnavalescus Simone & Salvador, 2016, and Gonyostomus egregius (Pfeiffer, 1845). We take the opportunity to discuss individual records of interest, evaluate the quality of the data and possible improvements, as well the potential and implications of the use of the iNaturalist platform for research in Brazil and other tropical countries. While iNaturalist has its limitations, it holds great potential to help document biodiversity in the tropics.

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Section: Discussionmentioning

confidence: 99%

iNaturalist as a tool in the study of tropical molluscs

Cavallari‬

Salvador

2022

PLoS ONE

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“…For specific identification, mollusks were fixed in 70% alcohol to analyze morphological and conchological characteristics, following specialized catalogs (35)(36)(37)(38)(39)(40) and by comparisons with specimens deposited in the Mollusk Collection of the Oswaldo Cruz Institute (CMIOC). Whenever possible, voucher specimens were deposited in the CMIOC.…”

Section: Methodsmentioning

confidence: 99%

Parasitism of terrestrial gastropods by medically-important nematodes in Brazil

Thiengo

Ramos-de-Souza²,

Silva³

et al. 2022

Front. Vet. Sci.

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An ample variety of parasitic associations are found between mollusks and nematodes, in which the mollusks may act as intermediate, paratenic or definitive hosts. Some free-living nematodes, in particular those of the order Rhabditida, are also found frequently in terrestrial mollusks. The present study reviews the results of the parasitological testing on samples of terrestrial mollusks conducted at the Brazilian National Reference Laboratory for Schistosomiasis and Malacology between 2008 and 2021. The samples were supplied primarily by the public health authorities from the different regions of Brazil, but also by research institutions and general population. The mollusks were processed individually and the obtained larvae were identified from their morphology and, whenever necessary, by molecular analysis. A total of 1,919 service orders were registered during the period, including 19,758 mollusk specimens collected from 23 of the 26 Brazilian states, as well as the Federal District, totalizing 145 municipalities. There was a marked predominance of the synanthropic species that are widely distributed in Brazil—Achatina fulica (87.08%), Bulimulus tenuissimus (4.18%), Bradybaena similaris (2.06%), and Sarasinula linguaeformis (1.50%). Of the 16,750 terrestrial mollusks examined, nematodes were recorded in 1,308 service orders, with the predominance of the superfamily Metastrongyloidea, in 616 service orders. They included Angiostrongylus cantonensis, rat lungworm, which was found in 252 samples, and Aelurostrongylus abstrusus in 145 samples. Free-living nematodes were found in 952 samples, Ancylostoma caninum and Cruzia tentaculata (previously identified as Strongyluris sp.) in one and 275 samples, respectively, and other parasites in 210 samples (not identified). The results highlight the diversity of the associations between nematodes and terrestrial mollusks in Brazil, in particular invasive and synanthropic species, with emphasis on the giant African land snail, Achatina fulica. They demonstrate the prominent role of this species of mollusk in the transmission of medically-important nematodes, which affect the health of both humans and animals, in particular eosinophilic meningitis, which is caused by Angiostrongylus cantonensis. This reinforces the need for more studies, and justify the growing demand for information as well as parasitological diagnosis of this mollusk, given its wide distribution in Brazil and its impact as an urban pest.

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“…Due to the food preferences and voracity of these animals, which are mostly herbivores, they often become agricultural pests, with the potential to generate major impacts on this productive sector (Barker 2002, Thomé et al 2006, Baronio et al 2014, Landal et al 2019, Marchi et al 2021. Terrestrial molluscs may also present certain risks to the health of humans and domestic animals, given that some species act as intermediate hosts of nematodes that cause parasitosis (Valente et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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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An integrative study of the invasive jumping-snail Ovachlamys fulgens (Gastropoda, Helicarionidae) in Rio de Janeiro and its fast spreading in Southeastern and Southern Brazil

Cited by 4 publications

References 15 publications

iNaturalist as a tool in the study of tropical molluscs

iNaturalist as a tool in the study of tropical molluscs

Parasitism of terrestrial gastropods by medically-important nematodes in Brazil

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

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