Abstract
A study of the freshwater gastropods in the Saint Lawrence river near Montreal was undertaken to characterize the populations living in the benthos and on the vegetation, and to define the effects of a deterioration of water quality.
Ninety-eight samples, collected simultaneously from the benthos and on macrophytes, were expressed as the logarithm of each species' relative abundance. WPGMA clustering, principal coordinates and discriminant analysis were used to describe and characterize differences between samples. Diversity was also computed to show the transformations of population structure due to differences in pollution levels.
Prosobranch snails predominated in benthic populations while pulmonates characterized vegetation. A decrease in the number of species was the characteristic response to increasing pollution levels upon both types of substrates. High hydrocarbon levels were related to a decrease in the diversity of snail populations on the vegetation only.
Predominance of prosobranchs in the benthos and pulmonates on the vegetation could be explained by a differential dependence of those two groups of snails on the aquatic medium, and by considering modes of nutrition. Sporadic oil spills affected the snail populations living on macrophytes.
Similar content being viewed by others
Bibliographie
Allen, H. L., 1971. Primary productivity, chemo-organotrophy and nutritional interactions of epiphytic algae and bacteria on macrophytes in the littoral of a lake. Ecol. Monogr. 41: 91–97.
Ahmad, A., Chodorowski, A. & Legendre, P., 1974. Studies on the effects of pollution on the diatom communities of the St. Lawrence river near Montreal. Proc. 9th. Canadian Symp. Water Poll. Res. Can.: 135–141.
Bartlett, M. S., 1948. Internal and external factor analysis. Br. J. Psychol. statist. Sect. 1: 77–85.
Basch, P. F., 1963. A review of the recent fresh-water limpet snails of North America. Bull. Mus. comp. Zool. 129: 401–461.
Bickel, P., 1965. The role of aquatic plants and submerged structures in the ecology of a freshwater pulmonate snail Physa integra (Hold). Sterkiana 18: 17–20.
Calow, P., 1970. Studies on the natural diet of Lymnaea pereger obtusa (Kobelt) and its possible ecological implications. Proc. malac. Soc. Lond. 34: 203–220.
Calow, P., 1973a. Gastropod association within Malham Tarn, Yorkshire. Freshwater Biol. 3: 521–534.
Calow, P., 1973b. Field observations and laboratory experiments on the general food requirements of 2 species of fresh water snail Planorbis contortus and Ancylus fluviatilis. Proc. malac. Soc. Lond. 40: 483–489.
Clampitt, P. T., 1970. Comparative ecology of the snails Physa gyrina and Physa integra (Basommatophora-Physidae). Malacologia 10: 113–148.
Clarke, A. H., 1973. The freshwater mollusks of the Canadian Interior Basin. Malacologia 13: 1–509.
Foin, T., 1971. The distribution pattern of the freshwater prosobranch Oxytrema proxyma (Say). J. Eleska Mitchell Sci. Soc. 87: 1–10.
Goodrich, C., 1921. Three new species of Pleuroceridae. Occas Pap. Mus. Zool. Univ. Michigan 91: 1–5.
Gouin, D. & Malo, P., 1977. Description des mélanges. Rapport technique no. 13. Comite d'Etude sur le Fleuve St-Laurent. SPEQ ed. 43 pp.
Gower J. C., 1966. Some distance properties of latent root and vector methods used in multivariate analysis. Biometrika 53: 325–338.
Gravel, Y. & Pageau, G., 1976. Les ressources biologiques et récréatives du St-Laurent sont-elles inépuisables? L'Ingénieur 62: 31–36.
Harman, W. N. & Berg, C. O., 1971. The freshwater gastropods of central New. York with illustrated keys to genera and species. Search: Cornell Univ. Agr. Exp. Sta. Entomol. (Ithaca) 1: 1–68.
Harman, W. N., 1972. Benthic substrates: their effect on freshwater mollusks. Ecology 53: 271–277.
Houp, K. H., 1970. Population dynamics of Pleurocera acuta in a Central Kentucky limestone stream. Am. Midl. Natur. 83: 81–88.
Hunter, R., 1964. Physiological aspects of ecology in nonmarine mollusks. In: Wilbur & Yonge (eds) Physiology of Mollusca, pp. 83–126. Academic Press, New York. 625 pp.
Krecker, F., 1939. A comparative study of the animal populations of certain submerged aquatic plants. Ecology 20: 553–563.
Lacoursiere, E., Vaillancourt, G. & Couture, R., 1975. Relations entre les plantes aquatiques et les gastéropodes (Mollusca, Gastropoda) dans la région de la centrale nucléaire Gentilly I (Quebec). Can. J. Zool. 53: 1868–1874.
Lloyd, M. & Ghelardi, R. J., 1964. A table for calculating the ‘equitability’ component of species diversity. J. anim. Ecol. 33: 217–225.
Orciari, R. D. & Hummon, W. D., 1975. A comparison of benthic oligochaete populations in acid and neutral lentic environments in southeastern Ohio. Ohio J. Sci. 75: 44–49.
Pageau, G., Gravel, Y. & Levesque, L., 1971. The ichthyofauna and flora of Lake St-Louis on the St-Lawrence river near Montreal, Quebec: General features and recent changes. Proc. 14th. Conf. Great Lakes Res.: 79–89.
Pinel-Alloul, B., 1975. Etude écologique des Lymnaeidés (mollusques, gastéropodes, pulmonés) du lac St-Louis près de Montréal, Québec. Thèse de doctorat. Université de Montreal. 206 pp.
Pip, E. & Paulishyne, W. F., 1970. The ecology and distribution of Promenetus exacuous Say (Gasteropoda: Planorbidae) in southern Manitoba. Can. J. Zool. 49: 367–372.
Pip, E. & Stewart, J. M., 1976. The dynamics of two aquatic plant-snail associations. Can. J. Zool. 54: 1192–1205.
Pip, E., 1978. A survey of the ecology and composition of submerged aquatic snail-plant communities. Can. J. Zool. 56: 2263–2279.
Rosine, W. N., 1955. The distribution of invertebrates on submerged aquatic plant surfaces in Muskee Lake, Colorado. Ecology 36: 308–314.
Shannon, C. E., 1948. A mathematical theory of communication. Bell System tech. J. 27: 379–423, 623–656.
Scheerboom, J. E. M. & van Elk, R., 1978. Field observations on the seasonal variations in the natural diets and haemolymph-glucose concentration of the pond snail Lymnaea stagnalis Linnaeus. Proc. K. Ned. Akad. Wet. Set. C. Biol. Med. Sci. 81: 365–376.
Sokal, R. R. & Michener, C. D., 1958. A statistical method for evaluating systematic relationships. Univ. Kansas Sci. Bull. 38: 1409–1438.
Townsend, C. R., 1973. The food-finding orientation mechanism of Biomphalaria glabrata (Say). Anim. Behav. 21: 544–548.
Wetzel, R. G., 1969. Factors influencing photosynthesis and excretion of dissolved organic matter by aquatic macrophytes in hard-water lakes. Int. Rev. ges. Hydrobiol. 49: 1–64.
Whittaker, R. H., 1952. A study of summer foliage insect communities in the Great Smoky Mountains. Ecol. Monogr. 22: 1–44.
Wilhm, J. L. & Dorris, T. C., 1968. Biological parameters for water quality criteria. BioScience 18: 477–481.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lamarche, A., Legendre, P. & Chodorowski, A. Facteurs responsables de la distribution des gastéropodes dulcicoles dans le fleuve Saint-Laurent. Hydrobiologia 89, 61–76 (1982). https://doi.org/10.1007/BF00017539
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00017539