Impact of a Rhabditid Nematode on Survival and Fecundity of Cernuella virgata (Mollusca: Helicidae)

Charwat, Suzanne M.; Davies, Kerrie A.; Hunt, Colleen H.

doi:10.1080/09583150029288

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…In many areas of the world, more serious problems are posed by related species, including Theba pisana, the White Mediterranean Snail. This species is a major pest of cereal crops and has caused extensive damage and economic losses in the wheatbelt of the Yorke Peninsula in South Australia [6,7] and is also present in Western Australia, Victoria, and some areas of New South Wales and Tasmania [8]. The grape industry is also a victim of invasive snails, particularly C. aspersum and T. pisana.…”

Section: Plos Onementioning

confidence: 99%

“…In addition to the consumption of crops, it has also been implicated as a vector of plant pathogens, including the pathogenic fungus-like organism, Phytophthora citrophthora, also known as branch canker, on citrus trees [5]. Current control strategies for land snails include baiting with toxic molluscicides, commonly methiocarb and metaldehyde [6][7][8][9], which can have a detrimental effect on native wildlife and crops [10]. Baiting methods are also expensive and thus economically unsustainable [6,9].…”

Section: Introductionmentioning

confidence: 99%

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The protein and volatile components of trail mucus in the Common Garden Snail, Cornu aspersum

et al. 2021

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The Common or Brown Garden Snail, Cornu aspersum, is an invasive land snail that has successfully colonized a diverse range of global environments. Like other invasive land snails, it is a significant pest of a variety of agricultural crops, including citrus, grapes and canola. Cornu aspersum secretes a mucus trail when mobile that facilitates locomotion. The involvement of the trail in conspecific chemical communication has also been postulated. Our study found that anterior tentacle contact with conspecific mucus elicited a significant increase in heart rate from 46.9 to 51 beats per minute. In order to gain a better understanding of the constituents of the trail mucus and the role it may play in snail communication, the protein and volatile components of mucus trails were investigated. Using two different protein extraction methods, mass spectrometry analysis yielded 175 different proteins, 29 of which had no significant similarity to any entries in the non-redundant protein sequence database. Of the mucus proteins, 22 contain features consistent with secreted proteins, including a perlucin-like protein. The eight most abundant volatiles detected using gas chromatography were recorded (including propanoic acid and limonene) and their potential role as putative pheromones are discussed. In summary, this study has provided an avenue for further research pertaining to the role of trail mucus in snail communication and provides a useful repository for land snail trail mucus components. This may be utilized for further research regarding snail attraction and dispersal, which may be applied in the fields of agriculture, ecology and human health.

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Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The protein and volatile components of trail mucus in the Common Garden Snail, Cornu aspersum

et al. 2021

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“…This can be explained by documented resistance of H. aspersa to P. hermaphrodita [9]. A study by Charwat et al [18], however, showed helicid snails to be very sensitive to infection with this species of nematode, and in the present study, we exposed juvenile snails with a mass of no greater than 1 g, as recommended by Wilson and Gaugler (http://www.nysaes.cornell.edu/ent/biocontrol/). Furthermore, a study by Jaworska and Tomasik [19] demonstrated that some metal ions (including cadmium ions) were toxic to the nematodes H. bacteriophora and Steinernema carpocap-sae and, thus, lessened the infectivity of nematodes in the wax moth caterpillar Galleria mellonella.…”

Section: Discussionmentioning

confidence: 83%

Increased response to cadmium and Bacillus thuringiensis maize toxicity in the snail Helix aspersa infected by the nematode Phasmarhabditis hermaphrodita

Kramarz

Vaufleury

Zygmunt

et al. 2007

Environmental Toxicology and Chemistry

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To determine the effect of nematode infection on the response of snails to selected toxins, we infected Helix aspersa with 0-, 0.25-, 1-, or 4-fold the recommended field dose of a commercial nematode application for agricultural use. In the first experiment, the snails also were exposed to cadmium via food and soil at concentrations of 0, 30, 60, 120, or 240 mg/kg in a full-factorial design. In the second experiment, snails were infected with nematodes and also fed either Bt (expressing Bacillus thuringiensis toxin) maize or non-Bt maize. The snails were weighed at the beginning and end (after four weeks) of the experiments, and mortality was checked daily. Neither exposure of snails to nematodes nor exposure of snails to cadmium or Bt toxin affected the survival rates of snails. The number of dead snails was highest for combinations of nematode treatments with cadmium concentrations of 120 and 240 mg/kg. In both experiments (Bt and cadmium), the growth rate decreased with increasing nematode dose. The Bt maize was not harmful to the snails in the absence of nematodes, but infected snails grew faster when fed non-Bt maize. The growth rate of snails exposed to cadmium decreased with exposure to increasing Cd concentrations and differed significantly between the no-nematode treatment and the treatments with nematode doses of one- and fourfold the recommended field dose. Snails treated with the highest dose of nematodes accumulated the highest cadmium concentrations.

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“…Parazitirati jih morejo različne vrste ogorčic (Mengert, 1953;Morand et al, 2003;Grewal et al, 2003a), vendar pa se je doslej v biotičnem varstvu rastlin pred polži uveljavila le vrsta Phasmarhabditis hermaphrodita (Schneider) (Wilson in Grewal, 2005). V Avstraliji so v povojih poskusi uporabe nekaterih drugih vrst ogorčic (Rhabditida in Cephalobida) za zatiranje polžev (Charwat in Davies, 1999;Charwat et al, 2000), vendar je še prezgodaj, da bi lahko iz rezultatov teh raziskav potegnili nove smernice v biotičnem zatiranju polžev z ogorčicami.…”

Section: Uvodunclassified

Parazitske ogorčice polžev

LAZNIK,

TRDAN

2009

aas

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V prispevku je predstavljen pomen, način delovanja in razvojni krog parazitskih ogorčic polžev, ki so lahko pomembni naravni sovražniki polžev slinarjev (Limacidae) in lazarjev (Arionidae). Polži so na različnih območjih sveta gospodarsko pomembni škodljivci gojenih rastlin, uporaba parazitske ogorčice Phasmarhabditis hermaphrodita pa predstavlja za njihovo zatiranje eno od najpomembnejših alternativ kemičnim limacidom. V biotičnem varstvu rastlin so parazitske ogorčice polžev manj preučene kot entomopatogene ogorčice, vendar so bile v zadnjih dveh desetletjih izvedene številne raziskave, s katerimi želijo raziskovalci natančneje preučiti njihov pomen.

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Impact of a Rhabditid Nematode on Survival and Fecundity of Cernuella virgata (Mollusca: Helicidae)

Cited by 6 publications

References 3 publications

The protein and volatile components of trail mucus in the Common Garden Snail, Cornu aspersum

The protein and volatile components of trail mucus in the Common Garden Snail, Cornu aspersum

Increased response to cadmium and Bacillus thuringiensis maize toxicity in the snail Helix aspersa infected by the nematode Phasmarhabditis hermaphrodita

Parazitske ogorčice polžev

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