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Poropuntius bolovenensis 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Cypriniformes Cyprinidae

Scientific Name: Poropuntius bolovenensis Roberts, 1998
Taxonomic Notes: Roberts (1998) described three trophic morphs assigned to this species. Kottelat (2000) named two of the trophic morphs to other species: P. rasorius and P. laticeps.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii,v) ver 3.1
Year Published: 2012
Date Assessed: 2011-03-09
Assessor(s): Baird, I.
Reviewer(s): Kottelat, M. & Allen, D.
Justification:
This species is only found in the eastern half of the Boloven Plateau, southern Lao PDR, which has an estimated area of  approximately 2,500 km² (extent of occurrence). Numbers are currently decreasing due to heavy fishing pressure, however the biggest threat to this species is the planned dams (to be built within the next few years) which are likely to have a significant impact on this species. Two dams will have a negative effect on the entire species, and it is therefore counted at two locations. There is continuing decline in the quality and area of its habitat due to habitat conversion for agriculture. It is therefore assessed as Endangered.

This is one of four species of Poropuntius known from Bolaven Plateau with specialised morphology. The taxonomy is not very clear and this is a rare biological phenomenon on top of an isolated plateau. Research is needed to clear the taxonomy of these species or morphs. This is also an interesting system for research on evolution.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This is an upland species found only on the Bolovens Plateau, Paksong District, Champasak Province, southern Lao PDR.
Countries occurrence:
Native:
Lao People's Democratic Republic
Additional data:
Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:2500
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:2
Lower elevation limit (metres):800
Upper elevation limit (metres):1200
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This was a relatively dominant species in many streams on the Bolovens Plateau, but its numbers have been seriously depleted due to overfishing.
Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is found in clear rocky streams approximately 800–1,200 m asl. It feeds mainly on insects and does not do well in reservoirs. The species migrates short distances - probably not truly migratory, but undertakes local or short distance movements (M. Kottelat pers. comm. 2011).
Systems:Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes
Movement patterns:Full Migrant

Use and Trade [top]

Use and Trade: This species is harvested in subsistence fisheries.

Threats [top]

Major Threat(s): This fish is threatened by overfishing, dam construction, habitat degradation from commercial agriculture and bauxite mining on the plateau.

Conservation Actions [top]

Conservation Actions: No conservation measures are in place. Research is needed regarding its life cycle and the impact of different threats.

Citation: Baird, I. 2012. Poropuntius bolovenensis. The IUCN Red List of Threatened Species 2012: e.T180938A1680115. . Downloaded on 15 October 2018.
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