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Gasterosteus crenobiontus

Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_on

Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII GASTEROSTEIFORMES GASTEROSTEIDAE

Scientific Name: Gasterosteus crenobiontus
Species Authority: 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)
Justification:
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:
Regionally extinct:
Romania
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.

Habitat and Ecology [top]

Habitat and Ecology: Habitat:
Freshwater springs.

Biology:
Spawns during an extended period, in February-October.
Systems: Freshwater

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. Version 2014.2. <www.iucnredlist.org>. Downloaded on 22 September 2014.
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