Map_thumbnail_large_font

Bellamya costulata

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_onStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA MOLLUSCA GASTROPODA ARCHITAENIOGLOSSA VIVIPARIDAE

Scientific Name: Bellamya costulata
Species Authority: (Martens, 1892)

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2010
Date Assessed: 2004-05-30
Assessor(s): Lange, C. & Ngereza, C.
Reviewer(s): Seddon, M.B. & Kristensen, T. (Mollusc Red List Authority)
Justification:
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.
History:
2004 Near Threatened
1996 Endangered (Baillie and Groombridge 1996)
1996 Endangered

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:
Native:
Kenya; Tanzania, United Republic of; Uganda
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.
Population Trend: Unknown

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.
Systems: Freshwater

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. Version 2014.2. <www.iucnredlist.org>. Downloaded on 19 September 2014.
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 fill in the feedback form so that we can correct or extend the information provided