Post by surroundx on Mar 3, 2018 3:39:34 GMT
Scientific Name: Germainaia geayi (Germain, 1911)
Synonym(s):
Caelatura geayi Haas, 1969
Unio geayi Germain, 1911
Taxonomic Source(s): Graf, D.L. and Cummings, K.S. 2015. The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves), updated 5 August 2015. The MUSSEL Project Web Site: MUSSELp. Available at: mussel-project.uwsp.edu/index.html.
Taxonomic Notes: The genus name Germainaia was created by Graf & Cummings (2009) for a few medium sized najad shells that had been collected by the French naturalist Martin-François Geay during his explorations in Madagascar (1904-1908) and originally described as Unio (Nodularia) geayi by Germain (2011). No precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain. Graf and Cummings (2009, 2011) do accept that the material originates from Madagascar, adding that its family classification remains doubtful (incertae sedis), i.e. either Unionidae (with Laurasian and African distribution) or Hyriidae (Australian- S. American).
Assessment Information [top]
Red List Category & Criteria: Extinct ver 3.1
Year Published: 2016
Date Assessed: 2016-06-14
Assessor(s): Van Damme, D.
Reviewer(s): Cumberlidge, N., Ranaivoson, C.H., Randrianasolo, H. & Rasamy, J.
Facilitator/Compiler(s): Sayer, C.
Justification:
This species is thought to be endemic to Madagascar. However, no precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain. Graf and Cummings (2009, 2011) do accept that the material originates from Madagascar, adding that its family classification remains doubtful (incertae sedis), i.e. either Unionidae (with Laurasian and African distribution) or Hyriidae (Australian- S. American).
If this species indeed comes from Madagascar then besides the three specimens collected in 1904-1908 from an unknown locality, it has never been re-found despite surveys in probable habitats. The species is therefore assessed as Extinct.
Geographic Range [top]
Range Description: This species was collected from an unknown locality on Madagascar. However, no precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain.
Countries occurrence:
Regionally extinct:
Madagascar
Additional data:
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Only three specimens of this species have been preserved.
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: Habitats are unknown but it must have been found from a permanent river or relatively extensive lake.
Systems: Freshwater
Use and Trade [top]
Use and Trade: This species was not used.
Threats [top]
Major Threat(s): The threats leading to the extinction of this species are unknown.
Conservation Actions [top]
Conservation Actions: No conservation actions were implemented before the species went extinct.
Source: www.iucnredlist.org/details/173096/0
Synonym(s):
Caelatura geayi Haas, 1969
Unio geayi Germain, 1911
Taxonomic Source(s): Graf, D.L. and Cummings, K.S. 2015. The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves), updated 5 August 2015. The MUSSEL Project Web Site: MUSSELp. Available at: mussel-project.uwsp.edu/index.html.
Taxonomic Notes: The genus name Germainaia was created by Graf & Cummings (2009) for a few medium sized najad shells that had been collected by the French naturalist Martin-François Geay during his explorations in Madagascar (1904-1908) and originally described as Unio (Nodularia) geayi by Germain (2011). No precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain. Graf and Cummings (2009, 2011) do accept that the material originates from Madagascar, adding that its family classification remains doubtful (incertae sedis), i.e. either Unionidae (with Laurasian and African distribution) or Hyriidae (Australian- S. American).
Assessment Information [top]
Red List Category & Criteria: Extinct ver 3.1
Year Published: 2016
Date Assessed: 2016-06-14
Assessor(s): Van Damme, D.
Reviewer(s): Cumberlidge, N., Ranaivoson, C.H., Randrianasolo, H. & Rasamy, J.
Facilitator/Compiler(s): Sayer, C.
Justification:
This species is thought to be endemic to Madagascar. However, no precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain. Graf and Cummings (2009, 2011) do accept that the material originates from Madagascar, adding that its family classification remains doubtful (incertae sedis), i.e. either Unionidae (with Laurasian and African distribution) or Hyriidae (Australian- S. American).
If this species indeed comes from Madagascar then besides the three specimens collected in 1904-1908 from an unknown locality, it has never been re-found despite surveys in probable habitats. The species is therefore assessed as Extinct.
Geographic Range [top]
Range Description: This species was collected from an unknown locality on Madagascar. However, no precise type locality is known and considering that Geay also collected in New Zealand and Australia in 1908, where he died, the origin of the material remains uncertain.
Countries occurrence:
Regionally extinct:
Madagascar
Additional data:
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Only three specimens of this species have been preserved.
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: Habitats are unknown but it must have been found from a permanent river or relatively extensive lake.
Systems: Freshwater
Use and Trade [top]
Use and Trade: This species was not used.
Threats [top]
Major Threat(s): The threats leading to the extinction of this species are unknown.
Conservation Actions [top]
Conservation Actions: No conservation actions were implemented before the species went extinct.
Source: www.iucnredlist.org/details/173096/0