Biomphalaria pfeifferi
| Biomphalaria pfeifferi | |
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| Drawing of apical, apertural and umbilical view of the shell of Biomphalaria pfeifferi. | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Heterobranchia |
| Superorder: | Hygrophila |
| Family: | Planorbidae |
| Genus: | Biomphalaria |
| Species: | B. pfeifferi
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| Binomial name | |
| Biomphalaria pfeifferi | |
Biomphalaria pfeifferi is a
's horn snails.This snail is a medically important pest,[2] because of transferring the disease schistosomiasis.[3]
Distribution
Biomphalaria pfeifferi is an African species. It has recently expanded its native range.[2]
Distribution of Biomphalaria pfeifferi include:
The type locality is
Phylogeny
A cladogram showing phylogenic relations of species in the genus Biomphalaria:[5]
| Biomphalaria |
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Mating system
B. pfeifferi is hermaphroditic, and genetic analyses performed both at the family and population levels indicate high self-fertilization rates.[6] However, B. pfeifferi exhibits only a low level of inbreeding depression.[6]
Ecology
Biomphalaria pfeifferi can survive up to 16 hours in anaerobic water using lactic acid fermentation.[7]
In Kenya, B. pfeifferi is positively associated with the common blue water-lily
Parasites
Parasites of Biomphalaria pfeifferi include the following 11 species found in Tanzania:[8]
- Schistosoma mansoni[8][9]
- undescribed clinostomatid[8]
- two species undescribed strigea[8]
- Cercaria porteri[8]
- Cercaria blukwa[8]
- two species of undescribed echinostome[8]
- Cercaria lileta[8]
- Cercaria obscurior[8]
- Cercaria bulla[8]
Control
In Kenya, releasing the edible American crayfish Procambarus clarkii as an introduced species has helped eliminate the mollusc, which it feeds on, as well as provided a new source of food and income,[3][10] but may also be impacting the environment by reducing the amount of native aquatic plants.[11]
The seeds of the tree Balanites aegyptiaca have a molluscicide effect on Biomphalaria pfeifferi.[12]
| Substance | Route | LC50 | Reference |
|---|---|---|---|
| Powder of crude kernels of Balanites aegyptiaca | immersion(?) | 60 ppm | [12] |
| Acetone extract of powder of the kernels of Balanites aegyptiaca | immersion(?) | 172,40 ppm | [12] |
| Ethanol extract of the powder of kernels of Balanites aegyptiaca | immersion(?) | 84,15 ppm | [12] |
Ethanolic extract of the fruits of
References
- ^ a b (in German and Latin) Krauss F. (1848). Die Sudafrikanischen Mollusken. Ebnert & Seubert, Stuttgart, 140 pp, 6 plates. page 83, plate 5, figure 7.
- ^ S2CID 11158571.
- ^ .
- ^ (in 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 Archived 2011-10-02 at the Wayback Machine.
- PMID 11719572.
- ^ a b Kengne-Fokam AC, Nana-Djeunga HC, Djuikwo-Teukeng FF, Njiokou F. Analysis of mating system, fecundity, hatching and survival rates in two Schistosoma mansoni intermediate hosts (Biomphalaria pfeifferi and Biomphalaria camerunensis) in Cameroon. Parasit Vectors. 2016 Jan 6;9:10. doi: 10.1186/s13071-015-1285-4. PMID: 26739376; PMCID: PMC4702333
- ^ S2CID 25795488.
- PMID 23031799.
- S2CID 225380619. Retrieved 1 April 2021.
- S2CID 35987722. Retrieved 1 April 2021.
- ^ a b c d 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
- Nguma, J. F.; McCullough, F. S.; Masha, E. (1982). "Elimination of Biomphalaria pfeifferi, Bulinus tropicus and Lymnaea natalensis by the ampullarid snail, Marisa cornuarietis, in a man-made dam in northern Tanzania". Acta Tropica. 39 (1): 85–90. PMID 6122367.
- Utzinger, J.; Tanner, M. (2000). "Microhabitat preferences of Biomphalaria pfeifferi and Lymnaea natalensis in a natural and a man-made habitat in southeastern Tanzania". Memórias do Instituto Oswaldo Cruz. 95 (3): 287–294. PMID 10800185.
- 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.