Tilapia busumana

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII PERCIFORMES CICHLIDAE

Scientific Name: Tilapia busumana
Species Authority: (Günther, 1903)

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2006-04-30
Assessor(s): Entsua-Mensah, M. & Lalèyè, P.
Reviewer(s): Snoeks, J., Darwall, W. & Smith, K.
Justification:
Known from seven locations and has an extent of occurrence less than 20,000 km². The population is declining. Its main threats stem from deforestation and poor agricultural practices around Lake Bosumtwi. Resultant increases in sediment loads and leaching of pesticides and other agrochemicals may pose threats to the health of the fish. Other threats include aquatic weeds and effluents from mining activities in the upper reaches of these coastal rivers especially the Ankobra, Pra and Ofin. These effluents may contain heavy metals like arsenic, mercury and compounds like cyanide. Timber felling is an especially important threat in the Tano. Another major threat is pollution of the water bodies by inadequately treated human waste and by domestic discharges arising from increasing residential developments. The species qualifies for Vulnerable status.

Geographic Range [top]

Range Description:This species is known from southwestern Ghana and Southeastern Cote d’Ivoire (basins of the Pra, Tano and Bia) and Lake Bosumtwi in Ghana.
Countries:
Native:
Côte d'Ivoire; Ghana
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: No data available on population trends.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Adapted to living in fast-flowing rivers with rapids. This is a demersal species.
Systems: Freshwater

Use and Trade [top]

Use and Trade: This species is harvested for human consumption.

Threats [top]

Major Threat(s): Threats to this fish species may stem from deforestation and bad agricultural practices around Lake Bosumtwi. Resultant increases in sediment loads and leaching of pesticides and other agrochemicals may pose threats to the health of the fish. Other threats include invasive aquatic weeds and effluents from mining activities in the upper reaches of these coastal rivers especially the Ankobra, Pra and Ofin. These effluents may contain heavy metals like arsenic, mercury and compounds like cyanide. Timber felling is an important threat in the Tano. Another major threat is pollution of the water bodies by inadequately treated human waste and domestic discharges arising from increasing residential developments.

Conservation Actions [top]

Conservation Actions: There is a conservation policy in place in Ghana (Inland fisheries policy; Wetlands Management Strategy). Habitat restoration and trends and monitoring are needed.

Bibliography [top]

Pan-Africa freshwater assessment references. Currently, full citations for references used in the Pan-Africa biodiversity assessments are unavailable on the Red List web site. These will be added to the site in 2011. We apologise for any inconvenience this causes.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).


Citation: Entsua-Mensah, M. & Lalèyè, P. 2010. Tilapia busumana. In: The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 23 November 2014.
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