|Scientific Name:||Padogobius nigricans|
|Species Authority:||(Canestrini, 1867)|
|Red List Category & Criteria:||Vulnerable B2ab(ii,iii,iv,v) ver 3.1|
|Reviewer(s):||Bianco, G. & Freyhof, J. (Mediterranean Workshop, Dec. 2004)|
This species is relatively restricted range (etimated area of occupancy (AOO) < 2,000 km²) and is only known from six river basins and two lakes, which are treated as separate locations on the basis of the likely threats. Formerly the species was extremely common but it has now disappeared from two rivers and has become rare in many others mostly as result of interaction with the introduced, congeneric species, Padogobius bonelli. Other causes of decline are water extraction and rising water temperatures due to lower water levels, pollution and predation by alien species.
|Range Description:||Restricted to the Tyrrhenian catchment of Central Italy.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The species is threatened mainly by introduction of the congeneric alien P. bonelli, which caused local extinctions in at least the river basins of Ombrone, Amaseno and Mignone in central Italy.|
|Habitat and Ecology:||Lives in small rivers with fast running water and stony substrate. It reproduces from late April to July according to the water temperature in different rivers. Also found in lakes.|
|Major Threat(s):||Habitat destruction, water extraction, and invasive species (Padogobius bonelli, in particular).|
|Conservation Actions:||It is listed in Annex II of the European Union Habitat Directive and in Appendix III of the Bern Convention.|
Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.
Bianco, P.G. 1995. Mediterranean endemic freshwater fishes of Italy. Biological Conservation 72: 159–170.
Bianco, P.G. and Ketmaier V. 2001. Anthropogenic changes in the freshwater fish fauna in Italy with reference to the central region and Barbus graellsii, a newly established alien species of Iberian origin. Journal of Fish Biology 59: 190–208.
Groombridge, B. (ed.). 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
IUCN. 1990. 1990 IUCN Red List of Threatened Animals. Gland, Switzerland and Cambridge, UK.
IUCN. 2006. 2006 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 May 2006.
Lorenzoni, M., Mearelli, M., Carosi, A., Giovinazzo, G., Petesse, M.L., Santucci, A. and Bazzurro, F. 1994. Study of the upper tract of the Tiber River watershed (central Italy): Fish communities. Riv. Idrobiol. 33: 229–275.
Lugli, M., Torricelli, P., Pavan, G. and Miller, P.J. 1996. Breeding sounds of male Padogobius nigricans with suggestions for further evolutionary study of vocal behaviour in gobioid fishes. Journal of Fish Biology 49: 648–657.
Nocita, A. and Vanni, S. 2001. Types of the Italian freshwater goby Padogobius nigricans (Canestrini, 1867). Journal of Fish Biology 58: 1757–1760.
Zerunian, S., D'Onofrio, E. and Gibertini, G. 1988. The biology of Gobius nigricans (Osteichthyes, Gobiidae). 1. Observations on the reproductive behaviour. Boll. Zool. 55: 293–298.
|Citation:||Crivelli, A.J. 2006. Padogobius nigricans. The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 27 November 2014.|
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