Gasterosteus crenobiontus 


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)
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:
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.
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 2008: e.T135637A4167779. . Downloaded on 28 November 2015.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided