Results 131 to 140 of about 460 (156)
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Colonization of Fresh Waters in the Republic of South Africa by Lymnaea columella Say (Mollusca : Gastropoda)

Nature, 1966
Lymnaea (Pseudosuccinea) columella Say 1817, described from specimens probably obtained in the vicinity of Philadelphia1, is widely distributed in still and slow-flowing waters in the eastern United States of America, Mexico, Central America, Cuba and the northern and central regions of South America1,2.
D S Brown, Brown D S
exaly   +3 more sources

Effect of the exposure to Fasciola hepatica (Trematoda: Digenea) on life history traits of Lymnaea cousini and Lymnaea columella (Gastropoda: Lymnaeidae)

Experimental Parasitology, 2006
The snails Lymnaea columella and Lymnaea cousini have both been reported as intermediate hosts of Fasciola hepatica in Colombia. The effect of the exposure to the parasite on survival, fecundity and size of these snails was evaluated by means of experimental infections and the life history traits of control and exposed groups were compared.
Laura, Salazar   +2 more
exaly   +3 more sources

The Innate Capacity for Increase in Numbers in the Pulmonate Snail, Lymnaea columella

Transactions of the American Microscopical Society, 1958
HANSON, MARY LOUISE. 1950. Some digenetic trematodes of marine fishes of Bermuda. Proc. Helm. Soc. Wash., 17: 74-88. MANTER, HAROLD W., and VAN CLEAVE, H. J. 1957. Some digenetic trematodes, including eight new species, from marine fishes of La Jolla, California. Proc. U. S. Nat. Mus., 101: 315-340. PARK, JAMES T. 1939. Fish trematodes from Tyosen. II.
Robert M. DeWitt, William C. Sloan
openaire   +1 more source

Egg Production in Lymnaea Columella

The American Naturalist, 1946
Egg production and clutch production in Lymnaea columella were found to be directly related. The correlation, on the basis of the daily records, was + .87; on the basis of 10-day periods, it was + .93. A second factor, the length of the laying period, was also found to be to a small, but significant extent related to egg production. Longevity was found
openaire   +1 more source

Influence of shell size ofLymnaea columellaon infectivity and development ofFasciola hepatica

Journal of Helminthology, 2008
AbstractExperimental infections ofLymnaea columellawithFasciola hepaticawere carried out to determine the influence of shell size on the infection rate and on the outcome of rediae and cercariae. Snails were divided into seven groups according to shell size: 2–4 mm, 5–6 mm, 7–8 mm, 9–10 mm, 11–12 mm, 13–14 mm and 15 mm or more.
L H L, Coelho   +2 more
openaire   +2 more sources

THE OCCURRENCE OF LYMNAEA (PSEUDOSUCCINEA) COLUMELLA, AN INTERMEDIATE HOST OF FASCIOLA HEPATICA, IN AUSTRALIA

Australian Veterinary Journal, 1975
An established population of the eastern North American freshwater snail Lymnaea (Pseudosuccinea) columella Say is reported from Middle Creek and Centennial Park, Sydney. This species is an important intermediate host of the liver fluke (Fasciola hepatica Linné) and its introduction and spread in New Zealand has resulted in an increase in the liver ...
openaire   +2 more sources

The response of the freshwater gasteropods Lymnaea tomentosa and L. columella to desiccation

Journal of Zoology, 1977
At a constant temperature and humidity there was a linear relationship between the log of survival time and the log of shell length in Lymnaea tomentosa and L. columella. Reasons are suggested for this relationship. There was no significant species difference in ability to resist desiccation, provided specimens of either species were of similar shell ...
R. E. Harris, W. A. G. Charleston
openaire   +1 more source

The occurrence of the snail Lymnaea columella on grazing areas in New South Wales and studies on its susceptibility to Fasciola hepatica

Australian Veterinary Journal, 1985
SUMMARY Field surveys were carried out in the Lismore and Casino area for the presence of fresh water snails potentially responsible for the transmission of trematodes in ruminants. Although the North American snail, Lymnaea columella has previously only been reported from metropolitan areas, large populations of the snail were found east of Lismore ...
J C, Boray   +3 more
openaire   +2 more sources

The uptake and distribution of radioselenium in the larvae of Fasciola hepatica and its snail host Lymnaea columella

Veterinary Parasitology, 1986
Radiolabeled metacercariae of Fasciola hepatica were obtained in vivo by incubating infected Lymnaea columella snails with 20 muCi radioselenomethione (75Se-M) per snail in 5 ml of water for 5 h, or in vitro by incubating a batch of unlabeled F. hepatica metacercariae with 75Se-M for 24 h.
openaire   +2 more sources

Development ofFasciola hepaticainLymnaea columellainfected with miracidia derived from cattle and marmoset infections

Journal of Helminthology, 2008
AbstractThe development ofFasciola hepaticafrom two species of definitive hosts, i.e. cattle (Bos taurus) and a marmoset (Callithrix penicillata) in the snailLymnaea columellawas determined based on the production of rediae and cercariae and snail survival rate.
E A, Mendes, W S, Lima, A L, de Melo
openaire   +2 more sources

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