Snail Farming: A Survey of Breeding Management, Hygiene and Parasitism of the Garden Snail, Helix Aspersa Müller

Cabaret, Jacques; Morand, Sergé; Aubert, Clément; Yvore, P.

doi:10.1093/mollus/54.2.209

Cited by 19 publications

(12 citation statements)

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“…Ces rksultats confirment des observations effectukes dans diffkrents klevages d'escargots (Cabaret et al 1988) oh la prCsence de nkmatodes de l'espkce Nemhelix bakeri n'a pu Ctre mis en Cvidence chez les juvCniles, malgrk l'importance du taux d'infestation des adultes reproducteurs. De meme la prCsence de parasites n'a pu &re dkcelCe chez les juvCniles en milieu naturel.…”

Section: Conclusion Et Discussionunclassified

Cycle évolutif du Nemhelix bakeri Morand et Petter (Nematoda, Cosmocercidae), parasite de l'appareil génital de l'Helix aspersa Müller (Gastropoda, Helicidae)

Morand¹

1988

Can. J. Zool.

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The development and transmission of Nemhelix bakeri Morand et Petter, a parasite of the genital tract of Helix aspersa Müller, are described. Free stages of this nematode were not found and laboratory infestations were not successful. The parasites were observed with snail spermatophores exchanged during copulation. Young snails were not infected. The larval stages of N. bakeri differ from those of C. Dukae. Only the L2 stage has lips in N. bakeri, while all larval stages of C. dukae, except the L3 stage, have some. Paleontologie and biogeographic data accredit the thesis of a secondary evolution of Cosmocercidae in land snails. It seems that this evolution occurred independently, in North America for C. dukae and in Europe for N. bakeri.

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Section: Conclusion Et Discussionunclassified

Cycle évolutif du Nemhelix bakeri Morand et Petter (Nematoda, Cosmocercidae), parasite de l'appareil génital de l'Helix aspersa Müller (Gastropoda, Helicidae)

Morand¹

1988

Can. J. Zool.

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“…Overcrowding associated with intensive H. aspersa snails reared under intensive conditions (Morand and Daguzan, 1986;Cabaret et al, 1988;Graham et al, 1996;Segade et al, 2009). Identifying snail parasites and their reservoirs/sources of infection under farming conditions is therefore crucial to reduce the potential adverse effects of these agents, and minimize the potential risks for human health derived from the presence of certain parasites in edible snails.…”

Section: Introductionmentioning

confidence: 99%

Brachylaima aspersae n. sp. (Digenea: Brachylaimidae) infecting farmed snails in NW Spain: Morphology, life cycle, pathology, and implications for heliciculture

Crespo

García

Estévez

et al. 2011

Veterinary Parasitology

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“…In particular, nematodes belonging to the genera Alloionema, Rhabditis, Angiostoma , and Nemhelix , trematodes, and the mite Riccardoella limacum are considered potential pathogens for farmed snails (Cooper and Knowler, 1991). Ciliates, by contrast, have been reported only once in snails from a French farm, but no information on the species identity and its microhabitat was provided by Cabaret et al (1988). Since Tetrahymena rostrata has been found to date in the renal organ of 7 species of slugs and 7 species of non-helicid snails (Van As and Basson, 2004), and it is considered highly pathogenic and even lethal to slugs (Brooks, 1968; Barker, 1993; Wilson et al 1998), we have conducted morphological and molecular studies to determine whether the renal ciliates infecting both H. aspersa subspecies in Galician farms belong to this pathogenic species.…”

Section: Introductionmentioning

confidence: 99%

Morphological and molecular characterization of renal ciliates infecting farmed snails in Spain

et al. 2009

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Renal infections by parasitic ciliates were studied in adult snails of Helix aspersa aspersa and Helix aspersa maxima collected from 2 mixed rearing system-based heliciculture farms located in Galicia (NW Spain). The occurrence of ciliates was also examined in slugs (Deroceras reticulatum) invading the greenhouses where first growing and fattening of snails is carried out. Histological examinations revealed a severe destruction of the renal epithelium in heavily infected hosts. Three ciliate isolates, one from each host species, were obtained and grown in axenic cultures. Cultured and parasitic ciliates were characterized morphologically and morphometrically. In addition, the encystment behaviour, the occurrence of autogamy, and the sequences of the mitochondrial cytochrome-c oxidase subunit 1 (cox1) and the small subunit ribosomal RNA (SSU rRNA) genes were also studied in the 3 isolates. A polymorphic life cycle involving resting and reproductive cysts, together with the morphological and morphometrical characteristics and the confirmation that autogamy occurs within cysts, demonstrate that our ciliates belong to the species Tetrahymena rostrata (Kahl, 1926) Corliss, 1952. The 3 isolates formed a well-supported clade using both genetic markers, and were clearly separate from the strain ATCC(R) 30770, which has been identified as Tetrahymena rostrata. We argue that our Spanish isolates should be regarded as Tetrahymena rostrata, and that the ATCC isolate should be regarded as a misidentification as neither cytological nor cytogenetical support for its identity has been presented.

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Snail Farming: A Survey of Breeding Management, Hygiene and Parasitism of the Garden Snail, Helix Aspersa Müller

Cited by 19 publications

References 0 publications

Cycle évolutif du Nemhelix bakeri Morand et Petter (Nematoda, Cosmocercidae), parasite de l'appareil génital de l'Helix aspersa Müller (Gastropoda, Helicidae)

Cycle évolutif du Nemhelix bakeri Morand et Petter (Nematoda, Cosmocercidae), parasite de l'appareil génital de l'Helix aspersa Müller (Gastropoda, Helicidae)

Brachylaima aspersae n. sp. (Digenea: Brachylaimidae) infecting farmed snails in NW Spain: Morphology, life cycle, pathology, and implications for heliciculture

Morphological and molecular characterization of renal ciliates infecting farmed snails in Spain

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