Bulinus nyassanus 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Hygrophila Planorbidae

Scientific Name: Bulinus nyassanus
Species Authority: Smith, 1877
Taxonomic Notes: Recently recognised as intermediate host for Schistosoma haematobium in Lake Malawi.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2004-05-30
Needs updating
Assessor(s): Kaunda, E. & Mailosi, A.
Reviewer(s): Seddon, M.B. & Kristensen, T. (Mollusc Red List Authority)
This species is endemic to Lake Malawi where it is assumed to have a widespread distribution and has no known major widespread threats.
Previously published Red List assessments:
1996 Vulnerable (VU)

Geographic Range [top]

Range Description: This species is endemic to Lake Malawi. This species is known from southwest shores in water 1.5 to 15m deep (and at 95m (Gray 1981)), and is also found at Monkey Bay and Cape Maclear.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: At Cape Maclear studies found 90 individuals/m2 in soft sediment at 5-10m depth (Genner and Michel, 2003) and 1.6 individuals/m2 (Louda et al. 1983).
Current Population Trend: Unknown
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It is found in soft substrates from shallow to potentially very deep (5-95 m).
Systems: Freshwater

Threats [top]

Major Threat(s): This species is threatened by fishing activities, especially where submerged plants are removed by fishing gears e.g. seine nets. A number of distribution centres of fishing have been set close to the shore.

Conservation Actions [top]

Conservation Actions: No information available.

Citation: Kaunda, E. & Mailosi, A. 2010. Bulinus nyassanus. The IUCN Red List of Threatened Species 2010: e.T3318A9757549. . Downloaded on 29 November 2015.
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