Land Snails and Soil Calcium in Central Appalachian Mountain Forest

Hotopp, Kenneth P.

doi:10.1656/1528-7092(2002)001[0027:lsasci]2.0.co;2

Cited by 96 publications

(62 citation statements)

References 19 publications

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“…Among the factors that may explain this finding, the dissolved calcium level in running water might be the main factor responsible for this difference, as it was lower in snail habitats located on cristallophyllian soils. Calcium is already known to affect the distribution of land snails in a given country (Boycott, 1934), as well as species richness (Horsa´k and Ha´jek, 2003;Jurˇicˇkova´et al, 2008), the abundance of each snail species (Hotopp, 2002;Vadeboncoeur et al, 2007) and snail growth (Beeby and Richmond, 2007). Secondly, two snail categories, i.e., juveniles measuring 3.1-3.4 mm in shell height and adults greater than 15 mm at the beginning of July, were subject to summer drying of their habitats.…”

Section: Discussionmentioning

confidence: 99%

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Titi

Mekroud

Vignoles

et al. 2017

Ann. Limnol. - Int. J. Lim.

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-Transplantations of Omphiscola glabra from granite to marl, or vice versa, between farms known for cases of fasciolosis have shown differences in the maximum shell height of adult snails. To determine whether these differences were due to parasitism, soil geology, or a combination of both factors, four snail populations living on marl or granite were investigated over 12 months to specify the characteristics of egglaying in spring, and to follow the shell growth of both snail generations. In both types of habitats, the number of egg-masses per adult snail and their size significantly decreased during the 7 weeks of snail egg-laying. During this period, each adult snail on marl laid a mean of 6.4 masses and 93.3 eggs. On granite, the mean values were 5.7 masses and 69.1 eggs, respectively. Two annual generations, the first in spring and the other in autumn, were noted in these habitats. The maximum shell height of adults was different: a mean of 19.8 and 20.5 mm on marl compared with 17.2 and 18.2 mm on granite. Soil geology thus plays a role in the egg-laying and shell growth of O. glabra.

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Section: Discussionmentioning

confidence: 99%

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Titi

Mekroud

Vignoles

et al. 2017

Ann. Limnol. - Int. J. Lim.

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“…FSNP is underlain by limestone, whereas the other two study sites are composed primarily of sandstone. Because land snails require calcium sources for basic physiological and biological processes (Fournié and Chétail 1984), and calcium availability affects the presence of land snails (Hotopp 2002, Skeldon et al 2007), limestone areas typically have relatively high abundances of snails (Schilthuizen et al 2003, Jurickova et al 2008. While this may explain the high abundance and species richness of snails at FSNP, a site does not require limestone for high species richness.…”

Section: Discussionmentioning

confidence: 99%

Land snail diversity can reflect degrees of anthropogenic disturbance

2013

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Abstract. Faunal indicators of old-growth forests in heavily-disturbed regions are virtually non-existent.However, land snails, in particular micro-snails, could reflect the impact of land-use on ecosystem integrity. Because of their size, limited mobility, and propensity to spend their entire lives at one locality due to lack of migratory behavior, micro-snails are susceptible to changes in land-use within forested ecosystems. Therefore, we proposed the hypothesis that micro-snails would reflect land-use in forested ecosystems. We sampled snail communities in paired old-growth and second-growth forests in three distinct ecoregions. Species diversity, richness, and abundance were greater in two of the three old-growth sites compared to paired second-growth sites. Across all of the ecoregions, 21 out of 70 species had an affinity for old-growth. Eighteen of which were statistically significant. These results suggest that anthropogenic disturbance plays a key role in shaping species diversity and community structure of land snail fauna. However, site specific factors also appear to be important moderators of the response, and the mechanisms of the process remain to be studied. Snails appear to be a promising group of organisms to use as indicators of historic forest disturbance. In order to maintain ecological integrity, forest managers should consider management strategies that are low impact and protect existing patches of old-growth forests.

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“…Or, il est certain que le calcium joue un rôle fondamental dans la physiologie, la croissance et la reproduction des escargots (Otchoumou, 2005). Ce minéral conditionne même le peuplement et l'abondance des gastéropodes terrestres sur les sols (Johannessen & Solhoy, 2001 ;Tattersfied et al, 2001 ;Hotopp, 2002). Les escargots s'en procurent à travers l'aliment et impérativement à partir de la litière où ils tirent environ 40 % de leurs besoins en nutriments selon Jess (1987).…”

Section: Introductionunclassified

Étude de la croissance d’un escargot géant africain comestible: <i>Achatina achatina</i> (Linné, 1758), élevé sur du substrat amendé à la poudre de coquilles d’escargot

Bouye¹,

Atchibri²,

Karamoko³

et al. 2017

J. App. Bioscience.

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substrate S0 is only composed of loam. However, the substrates S10, S20, S30 and S40 are composed of loam amended respectively at 10, 20, 30 and 40% of powder snail shells. This, in the hope to determine the effects and best levels of an amendment to the breeding substrate can induce better growth performance. The results showed a significant difference (P < 0.05) between the growth parameters observed for the amended substrates and control substrate. The highest growth rates were achieved with the breeding substrate S20 (0.45 g/j; 11.73 cm/j) containing 5.04% calcium and 77.22% organic matter. Conclusion and application of results:The use of the snail shell as a source of calcium for the amendment of the breeding substrate can now be considered in breeding African giant snails. However, it is advisable to use only the shells of the snails whose state of health is known in order to avoid any contamination of the substrate by pathogens.

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Land Snails and Soil Calcium in Central Appalachian Mountain Forest

Cited by 96 publications

References 19 publications

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Insights into the reproductive activity ofOmphiscola (Lymnaea) glabra(Gastropoda: Lymnaeidae) in relation to soil geology in Central France

Land snail diversity can reflect degrees of anthropogenic disturbance

Étude de la croissance d’un escargot géant africain comestible: <i>Achatina achatina</i> (Linné, 1758), élevé sur du substrat amendé à la poudre de coquilles d’escargot

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