Burnupia
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| Walker , 1912 |
The genus burnupia belongs to the family of planorbidae (Planorbidae) and is in numerous types occurring in Africa (and perhaps elsewhere) freshwater snails genus.
features
It is characterized by a bowl-shaped shell and is reminiscent of the European Ancylus species, to which it is not directly related, due to its size (up to 10 mm) .
Hodgson et al. Report on special designs of the sperm morphology.
Distribution and way of life
Except from Africa, where the animals only occur south of the Sahara, there are occasional reports of finds from South America. A critical evaluation as to whether the reports from South America are actually original occurrences outside Africa or whether they have been carried over or incorrectly determined is pending.
The species prefer to live on stony ground. They need oxygen-rich water, which is why they are often limited to the fringes of lakes or rivers (including waterfalls).
Systematics
The genus was first described in 1912 by Bryant Walker, it is named after the South African malacologist Henry Clifden Burnup (1852-1928).
External system
In the past, the genus Burnupia (like Ancylus ) belonged to the "Ancylidae" family, which has since been dissolved . According to current knowledge, Burnupia is a monophyletic taxon and is relatively isolated from the other cup-shaped snail genera ( Ancylus , Ferrissia , Gundlachia , Laevapex , Hebetancylus ) of the family, with which it is therefore not a natural related group.
Internal system
Numerous species are currently listed. A critical taxonomic revision is pending. Below is a selection of the types:
- Burnupia alta Pilsbry & Bequaert, 1927, proven for the Congo Basin .
- Burnupia caffra Krauss, 1848, recorded in South Africa .
- Burnupia crassistriata Preston, 1911, a species endemic to the central highlands of Kenya that is classified as threatenedby the IUCN due to the increasing drying of the waters.
- Burnupia edwardiana Pilsbry & Bequaert, 1927, recorded in Lake Eduard ( Democratic Republic of the Congo ).
- Burnupia kempi Preston, 1912, recorded in Uganda at an altitude of 1830 m.
- Burnupia kimiloloensis Pilsbry & Bequaert, 1927, recorded in the Luapula River ( Democratic Republic of the Congo ).
- Burnupia obtusata Walker, 1926, recorded in South Africa .
- Burnupia stenochorias Melvill & Ponsonby, 1903, recorded in South Africa .
- Burnupia stuhlmanni Martens, 1897, aspecies found in lakes and riversin Kenya , Tanzania and Uganda . It also occurs on the edge of Lake Victoria and in the Victoria Nile and is classified as threatenedby the IUCN .
Individual evidence
- ↑ TO Hodgson, JM Healy: Comparative sperm morphology of the pulmonate limpets Trimusculus costatus, T. reticulatus (Trimusculidae) and Burnupia stenochorias and Ancylus fluviatilis (Ancylidae). In: Journal of Molluscan Studies. Volume 64, 1998, pp. 447-460.
- ↑ Silvana C. Thiengo, Aline C. Mattos, M. Fernanda Boaventura, Márcio S. Loureiro, Sonia B. Santos, Monica A. Fernandez: Freshwater snails and schistosomiasis mansoni in the State of Rio de Janeiro, Brazil: V - Norte Fluminense Mesoregion. In: Memórias do Instituto Oswaldo Cruz. Volume 99, suppl. 1, Rio de Janeiro 2004. doi: 10.1590 / S0074-02762004000900018
- ^ R. Meanwell: Henry Clifden Burnup. In: The Nautilus. Volume 42, 1928, pp. 62-63.
- ^ C. Albrecht, T. Wilke, K. Kuhn, B. Streit: Convergent evolution of shell-shape in freshwater limpets: the African genus Burnupia. In: Zoological Journal of the Linnean Society. Volume 140, 2004, pp. 577-588.
- ^ David S. Brown: Freshwater Snails of Africa and their Medical Importance. 2nd Edition. Taylor & Francis, London 1994.
- ^ Bryant Walker: Notes on South African Ancylidae I. Occasional papers of the museum of zoology. University of Michigan, Ann Arbor 1926.
Web links
- R. Kyambadde, CN Lange, C. Ngereza: IUCN Red List. Burnupia stuhlmanni
- CN Lange, C. Ngereza: IUCN Red List. Burnupia crassistriata .