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Bithynia pesicii 

Scope: Global & Mediterranean
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Littorinimorpha Bithyniidae

Scientific Name: Bithynia pesicii Glöer & Yildirim, 2006

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2014
Date Assessed: 2013-04-25
Assessor(s): Kebapçı, U. & Seddon, M.B.
Reviewer(s): Lopes-Lima , M. & Numa, C.
Contributor(s): Van Damme, D., Glöer , P., Pešić, V. & Radea, K.
Justification:
Bithynia pesicii is restricted to two small coastal streams in Turkey, both closely adjacent to each other, with an overall extent of occurrence of 10 km² (AOO less than 10 km2). This species is threatened by nutrient enrichment from the agricultural fields adjacent, as well as sewage from the adjacent coastal sites, where tourist development takes place. In summer periods the water levels in the stream can decline leading to an increased impact of sewage on the water quality, and hence can rapidly impact this species. The species is assessed as Endangered based on presence at two locations with known threats that are likely to impact the species.
Previously published Red List assessments:

Geographic Range [top]

Range Description:

Bithynia pesicii is endemic to Turkey and only known from two localities: the type locality of Akçapınar Stream (5–6 km long) (Glöer and Yıldırım 2006), and the Kadın Azmağı Stream in the Muğla Province (ca. 2 km long).

Countries occurrence:
Native:
Turkey
Additional data:
Estimated area of occupancy (AOO) - km2:0-10
Continuing decline in extent of occurrence (EOO):NoExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:2Continuing decline in number of locations:No
Extreme fluctuations in the number of locations:No
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information available about populations, past, present or future trends for this species.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:

The species is found on stones on the bottom of fast flowing creeks flowing into Aegean Sea. At the source of Akçapınar Stream it is present in a little swamp area rich in vegetation. Mean values of temperature are 13–16.9 °C and 15.6–16.4 °C in Akçapınar and Kadın Azmağı streams respectively (Kalyoncu et al. 2008).  

Systems:Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: This species is not utilised.

Threats [top]

Major Threat(s): The habitat of this species is surrounded by agricultural fields and bordered by a developing tourism centre, Akyaka, which is polluting the stream. Currently the levels of pollution have increased downstream, with the greatest concentration at the mouth of the river. However in summer periods the water levels in the stream can decline leading to an increased impact of sewage on the water quality which will impact the species.

Conservation Actions [top]

Conservation Actions: No conservation action are place for this species. Research on the population size, distribution and trends of the species and habitat monitoring are needed.

Citation: Kebapçı, U. & Seddon, M.B. 2014. Bithynia pesicii. The IUCN Red List of Threatened Species 2014: e.T164836A42456373. . Downloaded on 19 September 2018.
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