| the chemical and biological control of lymnaea truncatula in natural watercress beds in the limousin region (france). | the snails present in 17 natural watercress beds have been treated during 1 or 2 years by a control associating the use of a molluscicide (cucl2) and the introduction of a predatory snail, zonitoides nitidus. lymnea truncatula was eliminated in only one year of treatment in 14 stations, and in two years in the three others. elimination of other aquatic pulmonate snails was effected in two years for l. glabra, in 3 years for l. palustris, and in only one year for physa acuta. z. nitidus has disap ... | 1994 | 9140475 |
| [combined and alternate control of lymnaea truncatula müller by chemical and biological means. first experimental trials in the field]. | six lymnaea truncatula stations located in the department of haute-vienne (france) were treated in 1984 by a joint and alternate control with the use of a molluscicide (cucl2), and the introduction of a predator snail, zonitoides nitidus. investigations made during the first rainfalls postestivation had showed the elimination of all the lymnaeid snails in five stations, and the presence of some surviving snails (5%) in the last station. the toxic effects of low concentration cucl2 were enough im ... | 1986 | 3777801 |
| [the water-cress pools in connection with cases of human fasciolasis in limousin, france. experimental studies of trematode snails and their biological control (author's transl)]. | experimental studies on 16 water-cress pools with cases of human fasciolasis in limousin were undertaken. two species of snails, lymnaea glabra and l. truncatula are here trematode hosts. l. glabra alone lives in 5 pools. the introduction of zonitoides nitidus -- predatory snail -- without vegetation modification produces a progressive elimination of lymnaea in 3 years. the author insists on the use of determine the trematode host-aptitude of l. glabra and its limits when the two species -- l. g ... | 1978 | 754620 |
| [results and problems set by the introduction of zonitidae snails in some biotopes of lymnaea trancatula müller in indre and haute-vienne, france (author's transl)]. | systematic placing of zonitidea snails: zonitoides nitidus and oxychilus draparnaudi alone or in groups, in different series of habitats of lymnaea truncatula in haute-vienne, france (1974-1976) shows: --the elimination of lymnaea truncatula is entire after two years in temporary habitats covered with grass just mowed at the beginning of summer drying. the presence of stones, which make shelters, increases numbers of surviving snails. --predators-placing without previous grass-mowing is effectiv ... | 1977 | 603202 |
| [demographic development of lymnaea (galba) truncatula müller in haute-vienne, france. about observations on 4 years (1973-1976) (author's transl)]. | notes on the influence of shallow drainage and predation by zonitoides nitidus on lymnaea truncatula populations in 4 types of habitats. the populations of snails are observed with large and perceptibly constant numbers by the regular maintenance of drainage. irregular maintenance is followed by a gradual fall of numbers of snails with their rapid increase in the year following autumnal ditch-digging. grass-mowing of swampy meadows at the beginning of summer drying distinctly restricts numbers o ... | 1977 | 603201 |