Gasterosteus crenobiontus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Gasterosteiformes Gasterosteidae

Scientific Name: Gasterosteus crenobiontus Bǎcescu & Mayer, 1956

Assessment Information [top]

Red List Category & Criteria: Extinct ver 3.1
Year Published: 2008
Date Assessed: 2008-01-01
Assessor(s): Freyhof, J. & Kottelat, M.
Reviewer(s): Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit)
The species was last recorded in the 1960's. The extinction is a result of hybridisation with G. aculeatus. The springs inhabited by G. crenobiontus used to be separated from the habitat of G. aculeatus by a hypersaline lake that served as a barrier between the species. Irrigation works transformed the lake into a brackish one, which was invaded by migratory G. aculeatus. Survey work since the 1960's, most recently in 1998, have failed to find the species.

Geographic Range [top]

Range Description:Romania: freshwater springs of hypersaline littoral Lake Techirghiol (south of Constanta).
Countries occurrence:
Regionally extinct:
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Last recorded in the 1960's. Further surveys, most recently in 1998, all failed to find the species.
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Habitat:
Freshwater springs.

Spawns during an extended period, in February-October.

Threats [top]

Major Threat(s): Hybridisation with G. aculeatus which invaded its habitat when irrigation transformed the hypersaline lake which served as a natural barrier between the two species.

Conservation Actions [top]

Conservation Actions: None.

Citation: Freyhof, J. & Kottelat, M. 2008. Gasterosteus crenobiontus. The IUCN Red List of Threatened Species 2008: e.T135637A4167779. . Downloaded on 21 September 2017.
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