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Differences in the shell shape of lymnaea peregra mueller gastropoda pulmonata from lotic and lentic habitats environmental or genetic variance


, : Differences in the shell shape of lymnaea peregra mueller gastropoda pulmonata from lotic and lentic habitats environmental or genetic variance. Journal of Molluscan Studies 54(2): 197-208

Lymnaea peregra from lotic habitats (running waters) had larger aperture-length/shell-length ratios than contemporaries from lentic sites (standing waters). This pattern was observed in field samples from two separate years (1985 and 1986). Laboratory culture experiments suggested that shell shape could be genetically determined in at least some popuations. We hypothesize that lotic snails possess bigger feet, and hence larger apertures than lentic individuals as an adaptation to withstand water current.


Accession: 005151593

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Related references

Lam, PKS.; Calow, P., 1988: Differences in the shell shape of Lymnaea peregra (Muller) (Gastropoda: Pulmonata) from lotic and lentic habitats; environmental or genetic variance?. Lymnaea peregra from lotic habitats (running waters) had larger aperture-length/shell-length ratios than contemporaries from lentic sites (standing waters). This pattern was observed in field samples from two separate years (1985 and 1986). Labora...

Lam, P.K.S.; Calow, P., 1989: Intraspecific life-history variation in Lymnaea peregra (Gastropoda: Pulmonata). Environmental or genetic variance. The Journal of Animal Ecology 58: 9-602

Lam, PKS.; Calow, P., 1989: Intraspecific life-history variation in Lymnaea peregra (Gastropoda: Pulmonata). 2. Environmental or genetic variance?. (1) Freshwater organisms show considerable variation in traits between populations, and this has been attributed to both proximate environmental and evolutionary causes. A comparison of three neighbouring populations of the freshwater snail. Lymna...

Lam, P.K.S.; Calow, P., 1989: Intraspecific life history variation in lymnaea peregra gastropoda pulmonata ii. environmental or genetic variance. (1) Freshwater organisms show considerable variation in traits between populations, and this has been attributed to both proximate environmental and evolutionary causes. A comparison of three neighbouring populations of the freshwater snail. Lymna...

Evans N.J., 1989: Biochemical variation and shell shape in populations of the fresh water snail lymnaea peregra mollusca gastropoda pulmonata from south west ireland. Lymnaea peregra was collected at sites, predominantly from the Caha plateau, in south-west Ireland. These included sites investigated by previous workers and found to contain populations with a distinctive pattern of variation in shell-shape. Norm...

Adam, M.E.; Lewis, J.W., 1993: The role of Lymnaea auricularia (Linnaeus) and Lymnaea peregra (Mueller) Gastropoda: Pulmonata) in the transmission of larval digeneans in the Lower Thames Valley. Eleven species of larval digeneans are reported for the first time in the UK from the freshwater snail Lymnaea (Radix) auricularia. The latter replaced its congener L. peregra in a gravel pit near Wraysbury, Berkshire in the Lower Thames Valley an...

Jarne P.; Delay B., 1990: Population genetics of lymnaea peregra mueller gastropoda pulmonata in lake geneva. Using gel electrophoresis, a study was made of genetic exchange amongst populations of Lymnaea peregra in Lake Geneve. Genetic variability is high. A within population heterozygote deficiency is shown and the role of null alleles as an explanation...

Lam P.K.S.; Calow P., 1988: Some observations on the number and packaging of eggs of lymnaea peregra mueller gastropoda pulmonata. Journal of Molluscan Studies 54(3): 357-360

Lambert M C., 1989: Influence of temperature on the rate of natural increase of population of lymnaea peregra mueller mollusca gastropoda pulmonata basommatophora. Bulletin de la Societe Zoologique de France 114(1): 75-84

Calow, P., 1981: Adaptational aspects of growth and reproduction in Lymnaea peregra Gastropoda Pulmonata from exposed and sheltered aquatic habitats. Malacologia, 211-2: 5-13