scholarly journals Angiostrongylus vasorum: Experimental Infection and Larval Development inOmalonyx matheroni

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
L. R. Mozzer ◽  
L. C. Montresor ◽  
T. H. D. A. Vidigal ◽  
W. S. Lima
Keyword(s):  
Intermediate Host ◽  
Larval Development ◽  
Experimental Infection ◽  
Biomphalaria Glabrata ◽  
Prepatent Period ◽  
Angiostrongylus Vasorum ◽  
Larval Recovery

The susceptibility and suitability ofOmalonyx matheronias an intermediate host ofAngiostrongylus vasorumand the characteristics of larval recovery and development were investigated. Mollusks were infected, and from the 3rd to the 25th day after infection, larvae were recovered from groups of 50 individuals. The first observation of L2 was on the 5th day, and the first observation of L3 was on the 10th day. From the 22nd day on, all larvae were at the L3 stadium. Larval recovery varied from 78.2% to 95.2%. We found larval development to be faster inO. matheronithan inBiomphalaria glabrata. Our findings indicate that this mollusk is highly susceptible toA. vasorum. Infective L3 were orally inoculated into a dog, and the prepatent period was 39 days. This is the first study to focus onO. matheronias an intermediate host ofA. vasorum.

Role of the lymnaeid snailPseudosuccinea columellain the transmission of the liver flukeFasciola hepaticain Egypt

2014 ◽  
Vol 89 (6) ◽  
pp. 699-706 ◽  
Author(s):  
Y. Dar ◽  
P. Vignoles ◽  
D. Rondelaud ◽  
G. Dreyfuss
Keyword(s):  
Microsatellite Markers ◽  
Intermediate Host ◽  
Larval Development ◽  
Experimental Infection ◽  
Fasciola Hepatica ◽  
Experimental Infections ◽  
Lymnaeid Snail ◽  
Important Intermediate

AbstractExperimental infections of three EgyptianPseudosuccinea columellapopulations with sympatric miracidia ofFasciolasp., coming from cattle- or sheep-collected eggs, were carried out to determine the capacity of this lymnaeid to support larval development of the parasite. Using microsatellite markers, the isolates of Egyptian miracidia were identified asFasciola hepatica. Apart from being independent of snail origin, prevalences ranging from 60.4 to 75.5% in snails infected with five miracidia ofF. hepaticawere significantly higher than values of 30.4 to 42.2% in snails with bi-miracidial infections. The number of metacercariae ranged from 243 to 472 per cercarial-shedding snail and was independent of snail origin, parasite origin and miracidial dose used for infection. IfP. columellawas subjected to two successive bi-miracidial infections withF. hepatica, prevalence of infection was 63.3%, with a mean of 311 metacercariae per snail. These values were clearly greater than those already reported forRadix natalensisinfected with the same parasite and the same protocol. Successful experimental infection ofP. columellawithF. hepaticasuggests that this lymnaeid snail is an important intermediate host for the transmission of fascioliasis in Egypt.

scholarly journals The Chronology of Angiostrongylus vasorum (Baillet, 1866), Kamensky, 1905: Infection in Biomphalaria glabrata (Say, 1818)

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
T. A. Barçante ◽  
J. M. P. Barçante ◽  
L. Cardoso ◽  
R. N. Remedio ◽  
W. S. Lima
Keyword(s):  
Larval Development ◽  
Biomphalaria Glabrata ◽  
Oral Infection ◽  
Angiostrongylus Vasorum ◽  
Cellular Composition ◽  
Intermediate Hosts ◽  
Terrestrial Gastropods ◽  
Migratory Routes ◽  
Migratory Pattern ◽  
Different Tissues

The intermediate hosts of the French heartworm Angiostrongylus vasorum are aquatic and terrestrial gastropods. The present work is aimed at clarifying the sites of penetration and the migratory routes of A. vasorum in Biomphalaria glabrata snail tissues and evaluating their perilarval reaction with regard to the cellular composition and histological alterations involved in the gastropod response to infection. Biomphalaria glabrata snails were individually infected with 1000 first-stage larvae (L1) of A. vasorum each and killed at predetermined times after infection. Percutaneous infection occurred simultaneously with oral infection. Despite larval tropism to the fibromuscular tissue, some larvae were located in different tissues and organs. A perilarval reaction was observed around the larvae in a fibromuscular layer, appearing later around the larvae located in the viscera. The number of hemocytes surrounding the larvae increased gradually, forming a pregranuloma. Larval death and degeneration were not observed. No defined migratory pattern occurred, and larval development was apparently not associated with particular tissues or organs. In addition, the infection by A. vasorum induces a systemic mobilization of hemocytes in perilarval reaction.

scholarly journals Activities of naphthoquinones against Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae), vector of dengue and Biomphalaria glabrata (Say, 1818), intermediate host of Schistosoma mansoni

Acta Tropica ◽  
2009 ◽  
Vol 111 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Karlos A.L. Ribeiro ◽  
Cenira Monteiro de Carvalho ◽  
Maria Teresa Molina ◽  
Estelita Pereira Lima ◽  
Eulogio López-Montero ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata

scholarly journals Melanoides tuberculata (Mollusca: Thiaridae) as an intermediate host of Centrocestus formosanus (Trematoda: Heterophyidae) in Brazil

2010 ◽  
Vol 52 (4) ◽  
pp. 207-210 ◽  
Author(s):  
Hudson Alves Pinto ◽  
Alan Lane de Melo
Keyword(s):  
Intermediate Host ◽  
Experimental Infection ◽  
Mus Musculus ◽  
Poecilia Reticulata ◽  
Minas Gerais ◽  
First Report ◽  
Melanoides Tuberculata ◽  
Minas Gerais State ◽  
Small Intestines

Pleurolophocercous cercariae emerged from naturally infected Melanoides tuberculata from Minas Gerais State, Brazil, were used to perform experimental infection of laboratory-reared Poecilia reticulata. Mature metacercariae were obtained from the gills of fishes and force-fed to Mus musculus. The adult parasites which recovered from small intestines of mice were identified as Centrocestus formosanus. This is the first report of M. tuberculata as intermediate host of this heterophyid in Brazil.

scholarly journals Female biased sex-ratio in Schistosoma mansoni after exposure to an allopatric intermediate host strain of Biomphalaria glabrata

2013 ◽  
Vol 135 (2) ◽  
pp. 350-356 ◽  
Author(s):  
Julie M.J. Lepesant ◽  
Jérôme Boissier ◽  
Déborah Climent ◽  
Céline Cosseau ◽  
Christoph Grunau
Keyword(s):  
Sex Ratio ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata ◽  
Host Strain ◽  
Biased Sex Ratio

scholarly journals The behavioral effects of antibiotic treatment on the snailBiomphalaria glabrata

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e4171 ◽  
Author(s):  
Euan R.O. Allan ◽  
Michael S. Blouin
Keyword(s):  
Tissue Culture ◽  
Intermediate Host ◽  
Antibiotic Treatment ◽  
New World ◽  
Biomphalaria Glabrata ◽  
Behavioral Effects ◽  
Neglected Tropical Disease ◽  
Intermediate Hosts ◽  
And Control ◽  
Main Model

Schistosomiasis is a detrimental neglected tropical disease that is transmitted by Planorbid snails. Understanding the transmission and control of this disease requires an extensive understanding of these intermediate hosts, which is only achieved by the effective rearing and study of species such asBiomphalaria glabrata. This species is the intermediate host forSchistosoma mansoniin the New World, and is also the main model for studying schistosomes in mollusks. Antibiotics are used routinely inB. glabratatissue culture, and occasionally on live snails. Here we show that standard doses of three common antibiotics (penicillin, streptomycin and gentamicin) drastically diminish the activity of healthyB. glabrata, but that treated snails recover rapidly when placed in fresh water. Ampicillin treated snails did not show altered activity. We suggest that researchers keep these apparent toxicities in mind if a need for antibiotic treatment of live Planorbid snails arises.

The influence of second intermediate host species on the infectivity of metacercarial cysts of Echinoparyphium recurvatum

1999 ◽  
Vol 73 (2) ◽  
pp. 143-145 ◽  
Author(s):  
A.M. McCarthy
Keyword(s):  
Intermediate Host ◽  
Definitive Host ◽  
Host Species ◽  
Post Infection ◽  
Rana Temporaria ◽  
Biomphalaria Glabrata ◽  
Reproductive Status ◽  
Intermediate Hosts ◽  
Potential Influence ◽  
Second Intermediate Host

The potential influence of second intermediate host species on the infectivity of metacercarial cysts of Echinoparyphium recurvatum to the definitive host Anas platyrhynchos was examined experimentally. Echinoparyphium recurvatum metacercarial cysts were obtained from the following experimentally infected second intermediate hosts 14 days post expsoure to cercariae: Lymnaea peregra; Physa fontinalis; L. stagnalis;Planorbis planorbis; Biomphalaria glabrata; tadpoles of the amphibian Rana temporaria. Metacercarial cysts from each of these hosts were fed, in doses of 50 cysts per individual, to separate groups composed of between four and eight, 3-day-old A. platyrhynchos ducklings. All A. platyrhynchos were necropsied 15 days post-infection and the number, size, and reproductive status of E. recurvatum worms in the intestine was recorded. Analyses of variance on the number (transformed log (x + 1)) and size of worms revealed no significant differences in worms originating from metacercariae formed in the different second intermediate hosts (worm number P > 0.05, and worm size P > 0.05). All worms recovered were found to be gravid. It is therefore concluded that the species of second intermediate host utilized does not influence the infectivity of the metacercarial cyst of E. recurvatum, nor the subsequent establishment and reproductive status of the parasite in A. platyrhynchos.

Fasciola hepatica larval development within the intermediate host.

2021 ◽  
pp. 23-64
Author(s):  
Gilles Dreyfuss ◽  
Philippe Sindou ◽  
Philippe Hourdin ◽  
Philippe Vignoles ◽  
Daniel Rondelaud
Keyword(s):  
Intermediate Host ◽  
Larval Development ◽  
Fasciola Hepatica ◽  
Parasitic Infections ◽  
Snail Species ◽  
Larval Behavior ◽  
Host Snail

Abstract This book chapter focuses on host snail species and larval behavior forms in snails, and features of parasitic infections in naturally or experimentally infected snails, or in coinfected snails.

Molluscicidal activity of polyvinylpyrrolidone (PVP)-functionalized silver nanoparticles to Biomphalaria glabrata: Implications for control of intermediate host snail of Schistosoma mansoni

Acta Tropica ◽  
2020 ◽  
Vol 211 ◽  
pp. 105644 ◽  
Author(s):  
Paula Sampaio Araújo ◽  
Maxwell Batista Caixeta ◽  
Rafaella da Silva Brito ◽  
Bruno Bastos Gonçalves ◽  
Sueli Maria da Silva ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Schistosoma Mansoni ◽  
Intermediate Host ◽  
Biomphalaria Glabrata ◽  
Intermediate Host Snail ◽  
Host Snail ◽  
Molluscicidal Activity
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