Biomphalaria pfeifferi
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| Drawing of apical, apertural and umbilical view of the shell of Biomphalaria pfeifferi. | |
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B. pfeifferi
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| Biomphalaria pfeifferi |
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Biomphalaria pfeifferi is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
This snail is a medically important pest,[2] because of transferring the disease schistosomiasis.
Contents
Distribution
Biomphalaria pfeifferi is an African species. It has recently expanded its native range.[2]
Distribution of Biomphalaria pfeifferi include:
The type locality is Umgani-Valley, Natal, South Africa[1] (in the times of the description it was the British Colony of Natal).
Phylogeny
A cladogram showing phylogenic relations of species in the genus Biomphalaria:[4]
| Biomphalaria |
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Ecology
Biomphalaria pfeifferi can survive up to 16 hours in anaerobic water using lactic acid fermentation.[5]
Parasites
Parasites of Biomphalaria pfeifferi include the following 11 species found in Tanzania:[6]
- Schistosoma mansoni[6][7]
- undescribed clinostomatid[6]
- two species undescribed strigea[6]
- Cercaria porteri[6]
- Cercaria blukwa[6]
- two species of undescribed echinostome[6]
- Cercaria lileta[6]
- Cercaria obscurior[6]
- Cercaria bulla[6]
Toxicology
The seeds of the tree Balanites aegyptiaca have a molluscicide effect on Biomphalaria pfeifferi.[8]
| Substance | Route | LC50 | Reference |
|---|---|---|---|
| Powder of crude kernels of Balanites aegyptiaca | immersion(?) | 60 ppm | [8] |
| Acetone extract of powder of the kernels of Balanites aegyptiaca | immersion(?) | 172,40 ppm | [8] |
| Ethanol extract of the powder of kernels of Balanites aegyptiaca | immersion(?) | 84,15 ppm | [8] |
Ethanolic extract of the fruits of Dalbergia sissoo (family Leguminosae) exhibited molluscicidal effect against eggs of Biomphalaria pfeifferi.[9]
References
- ↑ 1.0 1.1 (German) (Latin) Krauss F. (1848). Die Sudafrikanischen Mollusken. Ebnert & Seubert, Stuttgart, 140 pp, 6 plates. page 83, plate 5, figure 7.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ (French) Sarr A., Kinzelbach R. & Diouf M. (2011, in press). "Diversité spécifique et écologie des mollusques continenatux de la basse vallée du Ferlo (Sénégal). [Specific diversity and ecology of continental molluscs from the Lower Ferlo Valley (Senegal)]". MalaCo 7: 8 pp. PDF.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. PDF
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 Loker E S., Moyo H. G. & Gardner S. L. (1981) "Trematode-gastropod association in nine non-lacustrine habitats in the Mwanza region of Tanzania". Parasitology 83: 381-399.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 8.0 8.1 8.2 8.3 Hamidou T. H., Kabore H., Ouattara O., Ouédraogo S., Guissou I. P. & Sawadogo L. (2002) "Efficacy of Balanites aegyptiaca(L.) DEL Balanitaceae as Anthelminthic and Molluscicid Used by Traditional Healers in Burkina Faso". International Conference on Emerging Infectious Diseases 2002. page 37. PDF
- ↑ Adenusi A. A. & Odaibo A. B. (2009). "Effects of varying concentrations of the crude aqueous and ethanolic". African Journal of Traditional, Complementary and Alternative medicines 6(2). abstract, PDF.
Further reading
- Lua error in package.lua at line 80: module 'strict' not found.
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- Wright C. A. (1963). "The freshwater gastropod mollusca of Angola". Bulletin of the British Museum (Natural History) 10(8): 447-528. 16 plates. page 455.
