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Engaeus urostrictus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Parastacidae

Scientific Name: Engaeus urostrictus
Species Authority: Riek, 1969

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2010
Date Assessed: 2010-06-01
Assessor(s): Doran, N. & Horwitz, P.
Reviewer(s): Collen, B. & Richman, N.
Contributor(s): Livingston, F., Livingston, F., Soulsby, A.-M., Batchelor, A., Dyer, E., Whitton, F., Milligan, H.T., Smith, J., Lutz, M.L., De Silva, R., McGuinness, S., Kasthala, G., Jopling, B., Sullivan, K. & Cryer, G.
Justification:

Engaeus urostrictus has been assessed as Vulnerable using criterion D2. This species has a restricted extent of occurrence of approximately 170 km2 but is not known to be undergoing a decline in population numbers at present. Further research is needed to determine the impact associated with feral pigs, forestry activity, cutting of tree ferns and forest fires; if these threats were in fact shown to have an impact on the quality of this species habitat then it would warrant a listing as Endangered under criteria B.

Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to Victoria, Australia. This species has been found in the Dandenong Ranges, east of Melbourne. Its occurrence near Mt. Donna Buang is unexpected and the eastward extension of its range is in need of clarification. It is not likely to be found west of Mt. Dandenong (Horwitz 1990). This species has an estimated extent of occurrence (EOO) of 167 km2.
Countries occurrence:
Native:
Australia (Victoria)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no population information for this species. It can be locally common (Horwitz et al. 1985), but it is infrequently encountered, partly because of its cryptic behaviour (Horwitz 1990).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species occurs in flood-beds of headwater creeks in temperate, wet sclerophyll forest dominated by Eucalyptus regnans and with abundant ferns at ground level, where it creates shallow burrows that ramify extensively (Horwitz 1990).

 

Systems:Freshwater

Threats [top]

Major Threat(s): Feral pigs, illegal cutting of tree ferns, and forestry activity resulting in sedimentation of head water creeks, may be problematic for this species. However, no evidence exists to suggest that these types of activities have lead to declines in populations. Broad scale habitat change and changes in weather, water and drainage patterns due to climate change could become a major issue in the future (N. Doran pers. comm. 2009).

Conservation Actions [top]

Conservation Actions: This species is listed under the Victoria Flora and Fauna Guarantee Act 1988 as Threatened (P. Howritz pers. comm. 2009). Furthermore, research on the impact that possible threats are having on the population numbers of this species is needed.

Citation: Doran, N. & Horwitz, P. 2010. Engaeus urostrictus. The IUCN Red List of Threatened Species 2010: e.T7747A12848007. . Downloaded on 29 March 2017.
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