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Assessment Results

Andreas Noellert © 2016 Andreas Nöllert (1 of 12 )

AmphibiaWeb species account

IUCN Red List assessment

Conservation Needs Assessment

Mantidactylus grandidieri ,   Grandidier's Madagascar Frog
Assessed for:  Madagascar   on: 23 Jul 2015   by: Miguel Vences  
Assessment Status: Completed  
Order:   Anura     Family:   Mantellidae

IUCN Global Red List:   Least Concern (LC)   
IUCN National Red List:   (not assessed)   
Distribution:     Madagascar  
Evolutionary Distinctiveness score:   32.5051978 
Recommended Conservation Actions:   In Situ Conservation  , In Situ Research  , Ex Situ Research  , Conservation Education   
Additional Comments:   Species captured for human consumption. 

Question #Short NameQuestion TextResponseComments
1 Extinction risk Current IUCN Red List category. [Data obtained from the IUCN Red List.] Least Concern (LC)
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? Yes / probably As with many other Malagasy amphibians, habitat (streams in forest) is available and could be repopulated after declines. In this species, such reintroductions could become a real options if locations would be identified where the species has declined not due to habitat destruction but due to overcollecting.
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 Reforestation should be a feasible option to retore destroyed habitat suitable for the species. Overcollecting can likely be mitigated by enforcing existing laws and environmental education.
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? Yes / probably The species is collected for food and it is likely that in some areas, collection pressure is rather high.
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 the Order to which it belongs (e.g. Anura, Passeriformes etc.)? No aspect of biology known to be exceptional This is one of the few large-sized mantellids. WIth one decribed and at least one undescribed species in the subgenus Mantidactylus, it certainly has unique biological features which however are largely unknown, given that most aspects of the reproduction of all of these species are unknown.
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? Yes The species can be seen as a food resource (bushmeat) and is well known to local people, unlike many other frog species.
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 Order to which it belongs (e.g. Anura, Passeriformes 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 Life history and breeding biology of this species and its relatives is largely unknown. We have recently identifi for the first time the tadpoles of one related species, but n general, the whole reproductive behavior is not known and apparently exceedingly difficult ot observe in the wild. Hence, a properly maintained captive colony could help elucidating these aspects of the species' biology, which are important to understand their habitat requirements (possibly breeding in cavities in the stream banks) and manage their habitats. However, captive breeding will be challenging due to the large size of these species.
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 This species is certainly an analog for husbandry of M. uttulatus and another undescribed candidate species of the subgenus Mantidactylus.
15 Captive breeding Has this species been successfully bred and/or maintained 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 Due to its large size and because it is well known to local people, and because of their value as food resource, this and related species can be used as conservation ambassadors.
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 It should not be difficult obtaining a stock of this species for ex-situ breeding from outside protected areas.
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)? No The taxonomy of the species and candidate pecies in the subgenus Mantidactylus is in need of revision.