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Assessment Results




© 2015 Gonçalo M. Rosa (1 of 5 )

AmphibiaWeb species account




IUCN Red List assessment


Conservation Needs Assessment

Mantidactylus pauliani   
Assessed for:  Madagascar   on: 03 Aug 2015   by: Angelica Crottini  
Assessment Status: Completed  
Order:   Anura     Family:   Mantellidae

IUCN Global Red List:   Critically Endangered (CR)   
IUCN National Red List:   (not assessed)   
Distribution:     Madagascar  
Evolutionary Distinctiveness score:   12.5377696702153 
Recommended Conservation Actions:   Rescue  , In Situ Conservation  , In Situ Research  , Biobanking   
Additional Comments:    

Question #Short NameQuestion TextResponseComments
1 Extinction risk Current IUCN Red List category. [Data obtained from the IUCN Red List.] Critically Endangered (CR) Thsi species has an extremely small Area of Occupancy (probably less than 10km2), all individuals belong to the same meta-population, and the extent and quality of its forest habitat on the Ankaratra Massif is severely declining. Together with the equally distributed Boophis williamsi this is probably the most threatened frog species of Madagascar. Bd has also been identified in the area with prevalences up to 100%
2 Possibly extinct Is there a strong possibility that this species might be extinct in the wild? No But we are not very far. In 2014 a visit to the site show strong sign of deforestation and the suitable habitat has reduced drastically in the last 5 years. Urgent actions are needed.
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? No There is a plan to include the distributional area of this species into a new Reserve (at Ankaratra), this process will be lead by the locally based VIF in partnership with Durrell Madagascar. If this process will not be implemented as soon as possible M. pauliani and Boophis williamsi might be the first known extinct frog species of Madagascar ^(after the big extinctions of the past).
5 Habitat for reintroduction Does enough suitable habitat exist, either within or outside of currently protected areas that is suitable for reintroduction or translocation? No This species occurs in a single, small area at 2,200m asl on the Ankaratra Massif in central Madagascar. This site is within 443m of the highest Ankaratra summit (2,643m asl). In the last 20 years, it has only been recorded in a single stream, where it is known to be not very abunant. Despite recent intensive survey work, it has not been found at other locations on the Ankaratra Massif. Originally it lived in montane rainforest, but it is now known only in high-altitude grassland with forest remnants. It breeds in fast-flowing mountain streams.
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 cannot/will not be reversed in time This species is mainly threatened by habitat loss due to fire, overgrazing by livestock, and expanding potato farming. Water pollution and stream sedimentation as a result of agriculture and mining might also be threats. Potentially can also be threatened by the presence of Bd.
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
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? Unknown In comparison with Boophis williamsi is probably more abundant, but not many individuals remains of this species. Try to establish an ex-situ colony (before it is too late) should be a priority of the near future.
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.)? No aspect of biology known to be exceptional BUt in inhabit fast-slowing mountain streams.
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? Yes THis species reproduce in fast-slowing mountain streams and this requirment might be difficult to be reproduced in captivity but it will be worth trying.
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? No
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? No Although it is cute frog with big eyes and stout rounded snout, but it is not colorful and not particularly active during the day (generally during the day if found hidden under rocks along the mountain stream
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
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? Unknown NOt much is known on the abundance of this species, it seems to be not very abundant and it seems to be distributed only aong one stream at Ankaratra Massif, but ex-situ conservation might be the only possibility to save this species from extinction (suitable habitat is reducing drastically).
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 No wide genetic differentiation is known to occur across the unique known meta-population

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