Identification of chemicals of snail origin that attract Schistosoma mansoni miracidia

MacInnis, A. J.; Bethel, William M.; Cornford, Eain M.

doi:10.1038/248361a0

Cited by 56 publications

(8 citation statements)

References 11 publications

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“…Among all the amino acids of the uncharged polar group, serine was the most preferred by the snails at all concentrations. Abd El-Hamid (7) reported that proline is the preferred attractant for Biomphalaria alexandrina and suggested that this high attraction of proline may be due to the fact that it is released from the snails into the surrounding water as a signal (10). However, in the present study serine was found to be the most preferred amino acid.…”

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confidence: 54%

Attraction to amino acids by Lymnaea acuminata, the snail host of Fasciola species

Tiwari

Singh

2004

Braz J Med Biol Res

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Adult Lymnaea acuminata (average length 20-22 mm) were collected locally from lakes and low-lying submerged fields from Gorakhpur. The chemoattraction studies were made in round glass aquaria measuring 30 cm in diameter and filled to a depth of 10 mm with 500 ml dechlorinated tap water. Each aquarium was divided into four concentric zones. At the starting time of the assay 10 snails were placed on the circumference of outermost zone 0. Snail attractant pellets (SAP) were added simultaneously in the center of central zone 3. SAP of different amino acids were prepared at concentrations of 10, 20, 50, 80 and 100 mM/2% agar solution and, subsequently, spread to a uniform thickness of 5 mm. After cooling, SAP were cut in small pieces of 5 mm in diameter. Lymnaea acuminata's attraction to amino acids was studied using different amino acid concentrations in SAP. Pellets containing amino acids with non-polar R groups (proline and tryptophan), a charged polar group (arginine) and uncharged polar R groups (serine, citrulline and asparagine) were tested. The snails were more attracted to the uncharged polar R group amino acid serine than to other groups of amino acids. The preferred amino acid concentration was 80 mM. The attraction of snails to different amino acids was concentration dependent. Snails could discriminate amongst the different amino acids at ≥50 mM.

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confidence: 54%

Attraction to amino acids by Lymnaea acuminata, the snail host of Fasciola species

Tiwari

Singh

2004

Braz J Med Biol Res

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“…Several studies have examined the influence of parasites on the host organism (Marshall et al 1974, McManus & James 1975, Becker 1980, the mechanisms of host location (MacInnis et al 1974, Haas 1985, and the mollusk's resistance to the parasite, i.e. incompatibility of the host (Wright 1974, Richards 1975, Bayne & Loker 1987, Zelck et al 1995, Boehmler et al 1996.…”

mentioning

confidence: 99%

A Comparative Study of the Organic Acid Content of the Hemolymph of Schistosoma mansoni-Resistant and Susceptible Strains of Biomphalaria glabrata

Bezerra¹,

Becker²,

Zelck³

1997

Mem. Inst. Oswaldo Cruz

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“…For example, MacInnis et al (1974) already showed that Biomphalaria glabrata, the intermediary host of S. mansoni, excretes certain amino acids that elicit chemotactic and chemokinetic responses by miracidia. For example, MacInnis et al (1974) already showed that Biomphalaria glabrata, the intermediary host of S. mansoni, excretes certain amino acids that elicit chemotactic and chemokinetic responses by miracidia.…”

Section: Schistosomiasis and Environmentmentioning

confidence: 99%

Environmental Aspects of Zoonotic Diseases

Armon¹

2012

wio

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Identification of chemicals of snail origin that attract Schistosoma mansoni miracidia

Cited by 56 publications

References 11 publications

Attraction to amino acids by Lymnaea acuminata, the snail host of Fasciola species

Attraction to amino acids by Lymnaea acuminata, the snail host of Fasciola species

A Comparative Study of the Organic Acid Content of the Hemolymph of Schistosoma mansoni-Resistant and Susceptible Strains of Biomphalaria glabrata

Environmental Aspects of Zoonotic Diseases

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