Английская Википедия:Biomphalaria pfeifferi
Biomphalaria pfeifferi is a species of air-breathing freshwater snail, an aquatic animal pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
This snail is a medically important pest,[1] because of transferring the disease schistosomiasis.[2]
Distribution
Biomphalaria pfeifferi is an African species. It has recently expanded its native range.[1]
Distribution of Biomphalaria pfeifferi include:
The type locality is Umgani-Valley, Natal, South Africa[4] (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:[5]
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 Nymphaea caerulea (the two species occur together).[2]
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,[2][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 Dalbergia sissoo (family Leguminosae) exhibited molluscicidal effect against eggs of Biomphalaria pfeifferi.[13]
References
Further reading
- Шаблон:Cite journal
- Шаблон:Cite journal
- 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.
- ↑ 1,0 1,1 Шаблон:Cite journal
- ↑ 2,0 2,1 2,2 2,3 Шаблон:Cite journal
- ↑ Шаблон:In lang 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 Шаблон:Webarchive.
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокKrauss 1848не указан текст - ↑ Шаблон:Cite journal
- ↑ 6,0 6,1 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
- ↑ Шаблон:Cite journal PDF
- ↑ 8,0 8,1 8,2 8,3 8,4 8,5 8,6 8,7 8,8 8,9 Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ 12,0 12,1 12,2 12,3 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.
