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Assessment Results




Andreas Noellert © 2016 Andreas Nöllert (1 of 22 )

AmphibiaWeb species account




IUCN Red List assessment


Conservation Needs Assessment

Platypelis grandis ,   Boulenger's Giant Treefrog
Assessed for:  Madagascar   on: 06 May 2015   by: Mark D. Scherz  
Assessment Status: Completed  
Order:   Anura     Family:   Microhylidae

IUCN Global Red List:   Least Concern (LC)   
IUCN National Red List:   (not assessed)   
Distribution:     Madagascar  
Evolutionary Distinctiveness score:   18.8833014795421 
Recommended Conservation Actions:   In Situ Conservation  , In Situ Research  , Ex Situ Research  , Conservation Education   
Additional Comments:    

Question #Short NameQuestion TextResponseComments
1 Extinction risk Current IUCN Red List category. [Data obtained from the IUCN Red List.] Least Concern (LC) This species is widespread and appears to be locally abundant.
2 Possibly extinct Is there a strong possibility that this species might be extinct in the wild? No
3 Phylogenetic significance The taxon’s Evolutionary Distinctiveness (ED) score, as generated by the ZSL EDGE program. (These data are added by AArk staff, and 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? Unknown The population size of this species and its distribution are not known.
5 Habitat for reintroduction Does enough suitable habitat exist, either within or outside of currently protected areas that is suitable for reintroduction or translocation? Yes This species is found along the entire eastern rainforest chain of Madagascar, and may therefore be able to be translocated or reintroduced to any forest along this range.
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 reversible in time frame This species is mainly threatened by habitat change and loss. This can be mitigated and reversed with effective management.
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 This species is not known to be collected for any reason.
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 The population size of this species is apparently large.
10 Biological distinctiveness Does the taxon exhibit, for example, a distinctive reproductive mode, behaviour, aspect of morphology or physiology, within the Class to which the species belongs (Amphibia, Mammalia etc.)? Aspect of biology shared with < 6 other species Platypelis grandis is possibly the largest species of microhylid frog in the world.
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 the Class to which the species belongs (Amphibia, Mammalia 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? No Conservation of this species should focus on reforestation, protecting forest, and stopping deforestation.
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 The breeding ecology of this species is relatively well known. It may make a good model for its congeners, although P. tuberifera should be considered as well.
15 Captive breeding Has this species been successfully maintained and bred in captivity? Not held in captivity to date
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? Yes This is a large species which, as juveniles, is very attractive.
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 The Sahonagasy Action Plan is ratified by the Malagasy government and states support for ex situ initiatives for all amphibian species in Madagascar.
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
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 The species-level taxonomy of this species is not complicated.

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