Alosa killarnensis 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Clupeiformes Clupeidae

Scientific Name: Alosa killarnensis
Species Authority: Regan, 1916

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii) 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 is only found in one location, Lough Leane (19 km²) in Ireland where it is threatened by eutrophication, and may potentially be impacted by introduced species (cyprinids such as Rutilus rutilus and Abramis brama).

Geographic Range [top]

Range Description: Lough Leane (19 km²) (Killarney, Eire).
Countries occurrence:
Estimated area of occupancy (AOO) - km2: 19
Continuing decline in area of occupancy (AOO): No
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 19
Continuing decline in extent of occurrence (EOO): No
Extreme fluctuations in extent of occurrence (EOO): No
Number of Locations: 1
Continuing 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: The population was considered small in 1993 (Whilde 1993).
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: Habitat:
Lacustrine, pelagic, spawns in shallow bays.

Lives up to five years. Females are larger than males. Spawns in June-July on gravel bars and gravelled shallows around large islands of the lake. Feeds mostly on zooplankton. Highly sensitive to pollution (Whilde 1993).
Systems: Freshwater
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 3

Threats [top]

Major Threat(s): Eutrophication of the Lough Leane is a current threat to the species. The presence of excessive algal growth overlying littoral gravel may impede spawning. Also recently cyprinids such as Rutilus rutilus and Abramis brama have been recorded in the lake, and they may represent a threat to the species through competition.

Conservation Actions [top]

Conservation Actions: The identification of spawning sites in Lough Leane and their protection from declining water quality and development works is a priority to ensure the future survival of the species (Doherty et al. 2004).

Citation: Freyhof, J. & Kottelat, M. 2008. Alosa killarnensis. The IUCN Red List of Threatened Species 2008: e.T135582A4152432. . Downloaded on 26 November 2015.
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