Haplochromis mylergates

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:	Haplochromis mylergates
Species Authority:	Greenwood & Barel, 1978
Synonym/s:	Labrochromis mylergates (Greenwood & Barel, 1978)

Assessment Information [top]

Red List Category & Criteria:

Critically Endangered C2a(ii) ver 3.1

Year Published:

2010

Assessor/s:

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

Reviewer/s:

Darwall, W. & Smith, K.

Justification:
The species was rare in the past and the population has declined since the 1970s due to the introduction of the Nile Perch (Lates niloticus). Whilst many Haplochromis species suffered dramatic population crashes, many have shown signs of recovery in the last few years, however this species has not been seen since 1983. If it is still present it is likely to be extremely rare with very few individuals, but it may now be Extinct.

History:

1996	–	Extinct (Baillie and Groombridge 1996)
1996	–	Extinct

Geographic Range [top]

Range Description:	This species is endemic to Lake Victoria. Exact details on its distribution within the lake are not known.
Countries:	Possibly extinct: Tanzania, United Republic of
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	No information available.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	The species has been found over mud substrate in the sub-littoral zone. The species is a pharyngeal mollusc crushers.
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:	Many fish species within Lake Victoria have suffered severe and dramatic declines since the introduction of the Nile Perch. Although numbers of the perch have now decreased, the degradation of the water quality is also thought to be having a significant impact on some fish species. More research is needed to monitor this species and how it is affected by these threats, as well as establishing the extent of its range within the lake. Policy based action is needed to decrease the degradation of the lake, as well as to prevent over fishing. Protected areas should also be established.

Conservation Actions:

Many fish species within Lake Victoria have suffered severe and dramatic declines since the introduction of the Nile Perch. Although numbers of the perch have now decreased, the degradation of the water quality is also thought to be having a significant impact on some fish species. More research is needed to monitor this species and how it is affected by these threats, as well as establishing the extent of its range within the lake. Policy based action is needed to decrease the degradation of the lake, as well as to prevent over fishing. Protected areas should also be established.

Citation:	Witte, F., de Zeeuw, M.P. & Brooks, E. 2010. Haplochromis mylergates. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 22 May 2012.
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