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Assessment Results




© 2014 Todd Pierson (1 of 10 )

AmphibiaWeb species account




IUCN Red List assessment


Conservation Needs Assessment

Eurycea tynerensis ,   Oklahoma Salamander
Assessed for:  United States   on: 03 Apr 2018   by: Alicia Mathis  
Assessment Status: Completed  
Order:   Caudata     Family:   Plethodontidae

IUCN Global Red List:   Near Threatened (NT)   
IUCN National Red List:   (not assessed)   
Distribution:     United States  
Evolutionary Distinctiveness score:   20.57778216 
Recommended Conservation Actions:   In Situ Conservation  , Ex Situ Research   
Additional Comments:   Initial assessment data compiled by Ronald M. Bonett from “Amphibian Declines: The Conservation Status of United States Species”, edited by Michael Lannoo (©2005 by the Regents of the University of California), used with permission of the editor. The book is available from UC Press, http://www.ucpress.edu/books/pages/9484.html, and species accounts can be found on AmphibiaWeb, www.amphibiaweb.org. Original species account transcribed by Ruth Marcec. 

Question #Short NameQuestion TextResponseComments
1 Extinction risk Current IUCN Red List category. [Data obtained from the IUCN Red List.] Near Threatened (NT) Historically, classification of this species as E. tynerensis vs E. multiplicata grieseogaster, has been the subject of debate. Based on their genetic data, Bonnett and Chippindale (2004) conclude: "We recommend that the Ouachita clade be referred to as E. multiplicata, the Ozark surface-dwelling clade (including transforming and paedomorphic populations) as E. tynerensis and the Ozark subterranean clade as E. spelaeus." Therefore, E. tynerensis occurs in parts of 3 states: Arkansas, Missouri and Oklahoma. In Arkansas, E. tynerensis is considered to be a Species of Special Concern, and collecting permit requests are closely monitored (K. Irwin, personal communication). In Missouri, it is listed as a Species of Great Conservation Need. It is not currently listed as threatened in Oklahoma.
2 Possibly extinct Is there a strong possibility that this species might be extinct in the wild? No / unlikely
3 Phylogenetic significance The taxon’s Evolutionary Distinctiveness (ED) score, as generated by the ZSL EDGE program. (These data are not editable by Assessors). ED value < 20
4 Protected habitat Is a population of at least 50% of the individuals of the taxon included within a reliably protected area or areas? No / unlikely
5 Habitat for reintroduction Does enough suitable habitat exist, either within or outside of currently protected areas that is suitable for potential reintroduction or translocation? No / unlikely
6 Previous reintroductions Have reintroduction or translocation attempts been made in the past for this species? No
7 Threat mitigation Are the threats facing the taxon, including any new and emerging threats not considered in the IUCN Red List, potentially reversible? Threats are likely to be reversible in time frame to prevent further decline / extinction
8 Over-collection from the wild Is the taxon suffering from unsustainable collection within its natural range, either for food, for the pet trade or for any other reason, which threatens the species’ continued persistence in the wild? No / unlikely
9 Population recovery Is the known population of this species in the wild large enough to recover naturally, without ex situ intervention if threats are mitigated? Yes / probably
10 Biological distinctiveness Does the taxon exhibit, for example, a distinctive reproductive mode, behaviour, aspect of morphology or physiology, within its Class (e.g. Amphibia, Reptilia etc.)? No aspect of biology known to be exceptional Although not exceptional within its Class, the species is notable for having populations that are paedomorphic.
11 Cultural/socio-economic importance Does the taxon have a special human cultural value (e.g. as a national or regional symbol, in a historic context, featuring in traditional stories) or economic value (e.g. food, traditional medicine, tourism) within its natural range or in a wider global context? No
12 Scientific importance Is the species vital to current or planned research other than species-specific ecology/biology/conservation? (e.g. human medicine, climate change, environmental pollutants and conservation science), within its Class (e.g. Amphibia, Reptilia etc.)? No research dependent on this species
13 Ex situ research Does conserving this species (or closely related species) in situ depend upon research that can be most easily carried out ex situ? Yes
14 Husbandry analog Do the biological and ecological attributes of this species make it suitable for developing husbandry regimes for more threatened related species? i.e. could this species be used in captivity to help to develop husbandry and breeding protocols which could be used for a similar, but more endangered species at a later stage? Yes (Tim Herman, pers. comm.).
15 Captive breeding Has this species been successfully maintained and bred in captivity? Yes, bred to F1 Maintained and bred at Tulsa Zoo in the US.
16 Educational potential Is the species especially diurnal/active/colourful and therefore suited to be an educational ambassador for conservation of this group of species? No
17 Mandate Is there an existing conservation mandate recommending the ex situ conservation of this taxon? No
18 Range State approval Would a proposed ex situ initiative for this species be supported (and approved) by the range State (either within the range State or out-of-country ex situ)? Yes / probably
19 Founder specimens Are sufficient animals of the taxon available or potentially available (from wild or captive sources) to initiate the specified ex situ program? Yes / probably
20 Taxonomic status Has a complete taxonomic analysis of the species in the wild been carried out, to fully understand the functional unit you wish to conserve (i.e. have species limits been determined)? Yes Historically, classification of this species as E. tynerensis vs E. multiplicata grieseogaster, has been the subject of debate. Based on their genetic data, Bonnett and Chippindale (2004) conclude: "We recommend that the Ouachita clade be referred to as E. multiplicata, the Ozark surface-dwelling clade (including transforming and paedomorphic populations) as E. tynerensis and the Ozark subterranean clade as E. spelaeus."

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