Neomys anomalus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Eulipotyphla Soricidae

Scientific Name: Neomys anomalus Cabrera, 1907
Regional Assessments:
Common Name(s):
English Southern Water Shrew, Mediterranean Water Shrew, Miller's Water Shrew
French Crossope De Miller
Spanish Musgaño De Cabrera

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2016
Date Assessed: 2016-08-11
Assessor(s): Hutterer, R., Kryštufek, B., Yigit, N., Mitsain, G., Meinig, H., Bertolino, S. & Palomo, L.J.
Reviewer(s): Amori, G.
This species has a wide range. The population size has not been quantified, but it is not believed to approach the thresholds for the population size criterion of the IUCN Red List (i.e. less than 10,000 mature individuals in conjunction with appropriate decline rates and subpopulation qualifiers). Although the species is presumed to be declining as a result of loss and degradation of its wetland habitat, it is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, it is evaluated as Least Concern. However, the fragmented distribution of this species makes it susceptible to local extinctions, and population trends need to be monitored.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Neomys anomalus has a patchy global distribution in continental Europe and Asia Minor. It is found in parts of central and southern Europe from Spain and Portugal in the west through to the middle of the River Don (European Russia) and Iran in the east, but its range is fragmented (Corbet 1978, Spitzenberger 1999). It is recorded from sea level to 1,850 m (Spitzenberger 1999).
Countries occurrence:
Albania; Austria; Belarus; Belgium; Bosnia and Herzegovina; Bulgaria; Croatia; Czech Republic; France; Germany; Greece; Hungary; Iran, Islamic Republic of; Italy; Liechtenstein; Macedonia, the former Yugoslav Republic of; Moldova; Montenegro; Poland; Portugal; Romania; Russian Federation; Serbia; Slovakia; Slovenia; Spain; Switzerland; Turkey; Ukraine
Additional data:
Upper elevation limit (metres):1850
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:N. anomalus is suspected to be declining in line with rates of loss of its wetland habitat (Spitzenberger 1999, Spitzenberger pers. comm. 2006). Its patchy distribution means that there are many small isolated subpopulations, making local extinctions more likely. It may be locally quite abundant in the absence of its main competitor, N. fodiens. There are areas where the two species occur in the same habitats, but using different niches.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It inhabits lush vegetation next to slow-flowing or still eutrophic waters (marshes, swamps, lakes, rivers, and streams). Its habitat choice is influenced by competition with the larger Eurasian water shrew N. fodiens, which is a stronger swimmer (Spitzenberger 1990, 1999). In general, N. anomalus is less aquatic than N. fodiens and can colonise areas away from water (Palomo and Gisbert 2002). However, in regions where N. fodiens is absent, N. anomalus may adopt its competitor's aquatic niche and increase in size (Spitzenberger 1990, 1999). N. anomalus is strictly carnivorous, feeding predominantly on soft-bodied invertebrates such as insect larvae, spiders and worms (Spitzenberger 1990, Palomo and Gisbert 2002).
Systems:Terrestrial; Freshwater
Generation Length (years):0-1

Threats [top]

Major Threat(s): The major threat to the species is habitat loss. In many parts of its range wetlands are being destroyed and fragmented as a result of water extraction, canalisation of streams, agriculture, road building, and other human activities. Water quality is often degraded by agricultural chemicals, industrial effluent and sewage. Use of pesticides may be a problem in parts of the range (Palomo and Gisbert 2002, Cabral et al. 2005).

Conservation Actions [top]

Conservation Actions: It is listed on Appendix III of the Bern Convention, and it occurs in many protected areas. It is recommended that population trends are monitored, as the species may be vulnerable to the loss of aquatic habitats.

Errata [top]

Errata reason: This errata assessment has been created because the map was accidentally left out of the version published previously.

Citation: Hutterer, R., Kryštufek, B., Yigit, N., Mitsain, G., Meinig, H., Bertolino, S. & Palomo, L.J. 2016. Neomys anomalus (errata version published in 2017). The IUCN Red List of Threatened Species 2016: e.T29657A115169785. . Downloaded on 26 September 2018.
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