Platytaeniodus degeni

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:	Platytaeniodus degeni
Species Authority:	Boulenger, 1906

Assessment Information [top]

Red List Category & Criteria:

Least Concern ver 3.1

Year Assessed:

2010

Assessor/s:

Witte, F., de Zeeuw, M.P. & Brooks, E.

Reviewer/s:

Darwall, W. & Smith, K.

Justification:
Population density surveys carried out over the last thirty years shows that this species is increasing significantly. It is therefore assessed as Least Concern.

History:

1996

–

Extinct in the Wild

Geographic Range [top]

Range Description:	This species is endemic to Lake Victoria. It has been recorded in surveys carried out in Kenya, Tanzania and Uganda (Greenwood 1981).
Countries:	Native: Kenya; Tanzania, United Republic of; Uganda
Range Map:	(click map to view full version)

Population [top]

Population:	This species appears to be increasing in numbers. The results from a small trawl transect in the Mwanza Gulf (based on 60 catches from Feb-Jan) show the mean number caught per 10 minutes decreased from three in 1979/80 to zero for 1987/88 and 1993/95, but then increased to more than 18 for 2006/08.
Population Trend:	Increasing

Habitat and Ecology [top]

Habitat and Ecology:	The species has been found over sand and mud in the littoral and sub-littoral zone. The species is an oral shelling/crushing molluscivore.
Systems:	Freshwater

Threats [top]

Major Threat(s):	The main threat to this species is predation by Nile Perch (a potentially reversible threat). It is also potentially threatened by hybridization due to decreased water transparency (on account of eutrophication and erosion leading to increased sedimentation and runoff) interfering with mate recognition visual cues (Mrosso et al. 2003). This species is fished, although not targeted specifically.

Major Threat(s):

The main threat to this species is predation by Nile Perch (a potentially reversible threat). It is also potentially threatened by hybridization due to decreased water transparency (on account of eutrophication and erosion leading to increased sedimentation and runoff) interfering with mate recognition visual cues (Mrosso et al. 2003). This species is fished, although not targeted specifically.

Conservation Actions [top]

Conservation Actions:	None known, but the population trend of this species should continue to be monitored.

Conservation Actions:

None known, but the population trend of this species should continue to be monitored.

Citation:	Witte, F., de Zeeuw, M.P. & Brooks, E. 2010. Platytaeniodus degeni. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 10 February 2012.
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