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Palaemonetes cummingi 

Scope:Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_onStatus_ew_offStatus_ex_off

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Arthropoda Malacostraca Decapoda Palaemonidae

Scientific Name: Palaemonetes cummingi
Species Authority: Chace, 1954
Common Name(s):
English Florida Cave Shrimp, Squirrel Chimney Cave Shrimp

Assessment Information [top]

Red List Category & Criteria: Critically Endangered (Possibly Extinct) B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2013
Date Assessed: 2012-07-10
Assessor(s): De Grave, S. & Rogers, C.
Reviewer(s): Cumberlidge, N. & Smith, K.
Justification:
The species has only been recorded from Squirrel Chimney, a limestone cave in Alachua County, Florida (USA), and is only known from the holotype collected in 1953, as well as up to a dozen specimens collected in the 1960s-1970s (Doonan 2001), with the last known specimens recorded in 1973. The site on which the cave occurs is privately owned, and currently protected from trespassing and development. However, urban development associated with the growth of Gainesville is expected to continue and will most likely alter land use practices in the vicinity of Squirrel Chimney Cave. These changes could potentially impact ground water quality due to storm water runoff, sewage drainage, herbicide/fertilizer use in the area, and erosion/sediment deposition. Further, the invasive fish species Notropis harperi (Redeye Chub) has been found in the cave in relatively high numbers. This species is an opportunistic predator, which probably preys upon larval shrimps (Doonan 2001). Extensive surveys were carried out in Squirrel Chimney in 1992-1994, as well as other caves in the vicinity (Doonan 2001), but no further specimens were found. It is however noted, that of the more than 100 sinkholes and caves in Alachua County, only 38 were surveyed, excluding the one (Goat Sink) previously considered to have similar habitat to Squirrel Chimney. On the basis of the available evidence it is considered to be Critically Endangered, Possibly Extinct. More extensive surveys are required in Alachua County to determine if other caves or sinkholes may hold populations of the species.
Date last seen: 1973
Previously published Red List assessments:
  • 1996 – Vulnerable (VU)
  • 1994 – Vulnerable (V)
  • 1990 – Vulnerable (V)
  • 1988 – Vulnerable (V)
  • 1986 – Vulnerable (V)

Geographic Range [top]

Range Description:The species has only been recorded from Squirrel Chimney, a limestone cave in Alachua County, Florida (USA) (Strenth 1976).
Countries occurrence:
Native:
United States (Florida)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The species is only known from the holotype collected in 1953, as well as up to a dozen specimens collected in the 1960s-1970s (Doonan 2001).  The species is known to have abbreviated larval development (Dobkin 1971).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species is known from subterranean water in a single solution cave.
Systems:Freshwater
Movement patterns:Not a Migrant

Use and Trade [top]

Use and Trade: The species is not utilized.

Threats [top]

Major Threat(s): The site on which the cave occurs is privately owned, and currently protected from trespassing and development. However, urban development associated with the growth of Gainesville, Florida is expected to continue and will most likely alter land use practices in the vicinity of Squirrel Chimney Cave. These changes could potentially impact ground water quality due to storm water runoff, sewage drainage, herbicide/fertilizer use in the area, and erosion/sediment deposition. Further, the invasive fish species Notropis harperi (Redeye Chub) has been found in the cave in relatively high numbers.  This species is an opportunistic predator, which probably preys upon larval shrimps (Doonan 2001) .

Conservation Actions [top]

Conservation Actions: The site is currently privately owned, and is protected from development.

Classifications [top]

5. Wetlands (inland) -> 5.18. Wetlands (inland) - Karst and Other Subterranean Hydrological Systems (inland)
suitability: Suitable  major importance:Yes
1. Land/water protection -> 1.1. Site/area protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
8. Invasive & other problematic species & genes -> 8.1. Invasive non-native/alien species -> 8.1.2. Named species (Notropis harperi)
♦ timing: Ongoing ♦ scope: Whole (>90%) ♦ severity: Very Rapid Declines ⇒ Impact score: High Impact: 9 
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

9. Pollution -> 9.1. Domestic & urban waste water -> 9.1.1. Sewage
♦ timing: Future ♦ scope: Whole (>90%) ♦ severity: Causing/Could cause fluctuations ⇒ Impact score: Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.1. Nutrient loads
♦ timing: Future ♦ scope: Whole (>90%) ♦ severity: Causing/Could cause fluctuations ⇒ Impact score: Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.2. Soil erosion, sedimentation
♦ timing: Future ♦ scope: Whole (>90%) ♦ severity: Causing/Could cause fluctuations ⇒ Impact score: Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.3. Herbicides and pesticides
♦ timing: Future ♦ scope: Whole (>90%) ♦ severity: Causing/Could cause fluctuations ⇒ Impact score: Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.5. Threats
2. Conservation Planning -> 2.1. Species Action/Recovery Plan
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Dobkin, S. 1971. The larval development of Palaemonetes cummingi Chace, 1954 (Decapoda, Palaemonidae), reared in the laboratory. Crustaceana 20: 285-297.

Doonan, T.J. 2001. Survey of Squirrel Chimney and other selected caves to determine the status of Squirrel Chimney cave shrimp (Palaemonetes cummingi). Final Performance Report, Florida Fish and Wildlife Conservation Commission, Tallahassee, Florida.

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org. (Accessed: 12 June 2013).

Strenth, N.E. 1976. A review of the systematics and zoogeography of the freshwater species of Palaemonetes Heller of North America (Crustacea: Decapoda). Smithsonian Contributions to Zoology 228: 1-27.


Citation: De Grave, S. & Rogers, C. 2013. Palaemonetes cummingi. The IUCN Red List of Threatened Species 2013: e.T15886A788917. . Downloaded on 02 July 2016.
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