Influence of temperature acclimation and gut content on the supercooling ability of the land snail Cornu aspersum

2008 ◽  
Vol 150 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Armelle Ansart ◽  
Pierre-Aymeric Aulne ◽  
Luc Madec ◽  
Philippe Vernon
Keyword(s):  
Land Snail ◽  
Temperature Acclimation ◽  
Gut Content ◽  
Influence Of Temperature ◽  
Cornu Aspersum

scholarly journals The Influence of Temperature on the Larval Development of Aelurostrongylus abstrusus in the Land Snail Cornu aspersum

Pathogens ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 960
Author(s):  
Simone Morelli ◽  
Mariasole Colombo ◽  
Anastasia Diakou ◽  
Donato Traversa ◽  
Marika Grillini ◽  
...  
Keyword(s):  
Larval Development ◽  
Larval Stage ◽  
Developmental Rate ◽  
Land Snail ◽  
Intermediate Hosts ◽  
Aelurostrongylus Abstrusus ◽  
Influence Of Temperature ◽  
The Third ◽  
Influence Of Temperature On ◽  
Cornu Aspersum

The metastrongyloid Aelurostrongylus abstrusus has an indirect lifecycle involving gastropod intermediate hosts. The widespread snail Cornu aspersum is an efficient intermediate host of A. abstrusus. As the temperature may influence the developmental rate of metastrongyloids from first (L1) to the third infective larval stage (L3) inside molluscs, this study evaluated the effect of two controlled temperatures on the development of A. abstrusus in C. aspersum. Overall, 300 snails were infected with 500 L1 of A. abstrusus and kept at ∼25 °C. Fifteen days post infection (D15), the overall developmental rate to L3 (0.8%) was assessed in a subset of 20 snails. The remaining gastropods were divided in 2 groups, i.e., 180 still kept at ∼25 °C (G1) and 100 hibernated at ∼4 °C (G2). On D30, the larval development was evaluated in 20 snails from each group, while another batch of 80 snails was selected random from G1 and hibernated at ∼4 °C (G3). The larval developmental rate was determined digesting 20 snails from each of the three groups on D45, D60, and D75. The higher mean developmental rate was registered in G1 (3.8%) compared to G2 (1.9%) and G3 (2.3%), indicating that the development to L3 of A. abstrusus in C. aspersum is positively influenced by the increase of temperature.

Uptake and biological responses in land snail Cornu aspersum exposed to vaporized CdCl2

2018 ◽  
Vol 148 ◽  
pp. 377-383 ◽  
Author(s):  
L. Sturba ◽  
G. Liberatori ◽  
M.L. Vannuccini ◽  
S. Ancora ◽  
I. Corsi
Keyword(s):  
Land Snail ◽  
Biological Responses ◽  
Cornu Aspersum

Faecal microbiota dynamics in Cornu aspersum during dietary change and antibiotic challenge

2019 ◽  
Vol 85 (3) ◽  
pp. 327-335
Author(s):  
Parker N Smith ◽  
Sarah M Boomer ◽  
Michael J Baltzley
Keyword(s):  
Food Source ◽  
Population Analysis ◽  
Amplicon Sequencing ◽  
Land Snail ◽  
Faecal Microbiota ◽  
16S Rrna Amplicon Sequencing ◽  
Significant Difference ◽  
Cornu Aspersum ◽  
Penicillin Treatment ◽  
Pre Treatment

ABSTRACTDespite its widespread geographic distribution and applications, the herbivorous land snail Cornu aspersum represents an understudied animal host. In this study, we used a culture-based approach, in combination with a population analysis based on 16S rRNA amplicon sequencing, to describe changes in the faecal microbiota of wild-caught snails that were fed a nonsterile plant diet over a period of 21 days. At the beginning of the experiment, wild-caught snails harboured diverse populations of Gammaproteobacteria. The two most abundant genera of Gammaproteobacteria were soil-associated Pseudomonas and Buttiauxella; the latter is an understudied genus often reported in snails and slugs. During penicillin treatment, the diversity of Gammaproteobacteria in experimental snails bottlenecked, resulting in Pseudomonas takeover. Following penicillin treatment, experimental snails began to recover, with faecal samples containing pre-treatment Gammaproteobacteria groups by day 21. There was a significant difference in the colony-forming units/g across days and across treatments. Additionally, there was a significant interaction between day and treatment. The food source was not sterile and supported its own population of Gammaproteobacteria, primarily Pseudomonas, which would have been taken up by the snails daily. Given that Buttiauxella was not observed on the food source, we hypothesize that it was present and maintained within the digestive tract of C. aspersum, and this is consistent with the idea that C. aspersum maintains an endogenous gut microbiome.

scholarly journals Brachylaima spp. (Trematoda) parasitizing Cornu aspersum (Gastropoda) in France with potential risk of human consumption

Parasite ◽  
2020 ◽  
Vol 27 ◽  
pp. 15
Author(s):  
Claudia Gérard ◽  
Armelle Ansart ◽  
Nolwenn Decanter ◽  
Marie-Claire Martin ◽  
Maxime Dahirel
Keyword(s):  
North Africa ◽  
Intestinal Parasite ◽  
Health Hazard ◽  
Land Snail ◽  
Human Consumption ◽  
Geographic Spread ◽  
Great Body ◽  
Cornu Aspersum ◽  
Second Intermediate Host ◽  
First Time

The edible land snail Cornu aspersum, native to the Mediterranean coastlines of North Africa, is widely distributed on most continents and often invasive in areas where introduction is recent. This species could contribute to the geographic spread of parasites as demonstrated for Brachylaima spp. These cosmopolitan trematodes may represent a threat to human health, like in Australia where Brachylaima cribbi infects humans. In this study, we demonstrate for the first time the occurrence of Brachylaima spp. in two French populations of C. aspersum, Thorigné-Fouillard (Ille-et-Vilaine), and Arçais (Deux-Sèvres), with an overall prevalence of 10.4% (Thorigné-Fouillard) and 73.3% (Arçais), respectively and a metacercarial intensity on average three times higher in Thorigné-Fouillard (37) than in Arçais (11). Cornu aspersum may act as a first and second intermediate host, as demonstrated in Arçais. The morphometrics of metacercariae, particularly the great body length about 2 mm, discriminate our Brachylaima species from those already described in C. aspersum (B. cribbi in Australia, and B. aspersae, B. llobregatensis and B. mascomai in Europe). Molecular analysis, based on 28S and COI, suggests the occurrence of two species in our study, one of which is probably Brachylaima mesostoma, an intestinal parasite of passeriform birds described in Central Europe. We underline the need for further research to identify species of Brachylaima in France and measure the health hazard of consuming field-collected snails.

scholarly journals Functional connectivity in replicated urban landscapes in the land snail (Cornu aspersum)

2018 ◽  
Vol 27 (6) ◽  
pp. 1357-1370 ◽  
Author(s):  
Manon Balbi ◽  
Aude Ernoult ◽  
Pedro Poli ◽  
Luc Madec ◽  
Annie Guiller ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Land Snail ◽  
Urban Landscapes ◽  
Cornu Aspersum

Metabolism, Growth, and the Energetic Definition of Fitness: A Quantitative Genetic Study in the Land Snail Cornu aspersum

2013 ◽  
Vol 86 (5) ◽  
pp. 538-546 ◽  
Author(s):  
Andrea Bruning ◽  
Juan Diego Gaitán-Espitia ◽  
Avia González ◽  
José Luis Bartheld ◽  
Roberto F. Nespolo
Keyword(s):  
Genetic Study ◽  
Land Snail ◽  
Quantitative Genetic ◽  
Cornu Aspersum ◽  
Definition Of

Context dependence of the olfactory perceptual range in the generalist land snail Cornu aspersum

2015 ◽  
Vol 93 (8) ◽  
pp. 665-669 ◽  
Author(s):  
M. Dahirel ◽  
H. Cholé ◽  
A. Séguret ◽  
L. Madec ◽  
A. Ansart
Keyword(s):  
Land Snail ◽  
Perceptual Range ◽  
Generalist Species ◽  
Fragmented Habitats ◽  
Heterogeneous Landscapes ◽  
Starting Point ◽  
Wide Range ◽  
Cornu Aspersum ◽  
Potential Resource ◽  
Resource Patches

Dispersal success in animals depends in part on their perceptual range, i.e., the distance from which they can acquire information about their environment. We studied how the olfactory perceptual range of a generalist species, the brown garden snail (Cornu aspersum (Müller, 1774)), varied under controlled conditions depending on the context in which stimuli were presented, whether alone or in the presence of another stimulus with opposite properties. Cornu aspersum preferentially orient themselves towards small nettle (Urtica dioica L.) patches, a highly palatable plant, and move away from repulsive plants if these stimuli are placed up to between 20 and 40 cm away from their starting point. A blend of palatable and repulsive plants, tested together, do not significantly influence the orientation of individuals in either direction. Cornu aspersum are thus capable of detecting and evaluating relatively small potential resource patches from a distance, enabling them to limit costly explorations, but this ability is context-dependent. These data could lead to a better understanding of the behaviour of C. aspersum in very heterogeneous landscapes in relation to this species’ ability to colonise a wide range of anthropised and fragmented habitats.

Sign in / Sign up

Export Citation Format

Share Document