Tilapia gutturosa

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	ACTINOPTERYGII	PERCIFORMES	CICHLIDAE

Scientific Name:	Tilapia gutturosa
Species Authority:	Stiassny, Schliewen & Dominey, 1992

Assessment Information [top]

Red List Category & Criteria:

Critically Endangered B1ab(iii)+2ab(iii) ver 3.1

Year Published:

2010

Assessor/s:

Moelants, T.

Reviewer/s:

Brummett, R., Mbe Tawe, A.N., Dening Touokong, C., Reid, G.M., Snoeks, J. Staissny, M., Moelants, T., Mamonekene, V., Ndodet, B., Ifuta, S.N.B., Chilala, A., Monsembula, R., Ibala Zamba, A., Opoye Itoua, O., Pouomogne, V., Darwall, W. & Smith, K.

Contributor/s:

Justification:
The species is endemic to the crater Lake Bermin. The species is currently major threat is from oil plantations and slash and burn agriculture leading to sedimentation and pollution in the lake (one location). There is also a potential threat from the lake 'burping' - CO₂ (as in Lake Nyos and Lake Barombi-Mbo). In addition deforestation of the surroundings of the crater may cause more wind which could lead to the lake 'turning', as the lake is stratified, lower layer being very low in oxygen and high in organic matter. Higher winds may cause currents in the lake which could cause this lower layer to mix with the upper layer where the fish live. This would cause a massive decrease in oxygen in the water and kills the fish.

History:

1996	–	Vulnerable
1994	–	Rare (Groombridge 1994)

Geographic Range [top]

Range Description:	A Lower Guinea endemic, only known from Lake Bermin, Cameroon.
Countries:	Native: Cameroon
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	No information available.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	This species is benthopelgic.
Systems:	Freshwater

Threats [top]

Major Threat(s):	The species is potentially threatened by crater lake 'burping' - CO₂ gasses (pers. comm., Brummet, R.) as in Lake Nyos and Lake Baromni-Mbo. Deforestation, palm oil plantation and slash and burn agriculture are leading to pollution and sedimentation of the lake. Deforestation of the area surrounding the lake would lead to increased wind and therefore risk of turnover (it is a stratified lake, where the lower part is very low in oxygen and high in organic matter). This would destroy the top stratified layer where the fish live.

Major Threat(s):

The species is potentially threatened by crater lake 'burping' - CO₂ gasses (pers. comm., Brummet, R.) as in Lake Nyos and Lake Baromni-Mbo. Deforestation, palm oil plantation and slash and burn agriculture are leading to pollution and sedimentation of the lake. Deforestation of the area surrounding the lake would lead to increased wind and therefore risk of turnover (it is a stratified lake, where the lower part is very low in oxygen and high in organic matter). This would destroy the top stratified layer where the fish live.

Conservation Actions [top]

Conservation Actions:	None known.

Conservation Actions:

None known.

Citation:	Moelants, T. 2010. Tilapia gutturosa. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 18 June 2013.
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