Bellamya costulata 

Scope: Global

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Architaenioglossa Viviparidae

Scientific Name: Bellamya costulata
Species Authority: (Martens, 1892)
Bellamya costulata (Martens, 1892) Brown, 1994
Bellamya unicolor costulata (Martens, 1892) Mandahl-Barth, 1954

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2010
Date Assessed: 2004-05-30
Needs updating
Assessor(s): Lange, C. & Ngereza, C.
Reviewer(s): Seddon, M.B. & Kristensen, T. (Mollusc Red List Authority)
This species has an EOO less than 20,000 km² and a declining quality of habitat due to agricultural runoff and eutrophication in the northern part of range, and comes close to meeting Vulnerable B1ab(iii). It urgently needs work in Tanzania to assess the status of this species. Only the status in 10% of the range (the Kenyan part) is known.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to Lake Victoria. In Tanzania it could be present over much of the southern shores of the lake It is known from Mywanza to Bukoba. In Kenya known around Mbita Point (Rusingi Island). Data from Survey work by Lange (2003) suggests that this species is common and abundant in the Mbita area, present at 70% of sites. This species occurs on exposed shores rather than within Gulfs.
Countries occurrence:
Kenya; Tanzania, United Republic of; Uganda
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Not fully assessed but in a short survey of the gastropods of Lake Victoria, Kenya, in 2002/2003 over 4,000 specimens of the species were recorded at Mbita point, Kenya. The study also found clues that the species is abundant at the lake open waters.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Not published. In the short survey of the gastropods of the Lake in the Kenyan side, they appeared to be associated with course sandy sections with clear water, though they were recorded from most of the lake substrata.

Threats [top]

Major Threat(s): No information available.

Conservation Actions [top]

Conservation Actions: No information available.

Citation: Lange, C. & Ngereza, C. 2010. Bellamya costulata. The IUCN Red List of Threatened Species 2010: e.T2740A9474190. . Downloaded on 26 October 2016.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided