Home   |  View Assessments   |  Reports   |  Login   |  Help             


Assessment Results




© 2008 Miguel Vences and Frank Glaw (1 of 3 )

AmphibiaWeb species account




IUCN Red List assessment


Conservation Needs Assessment

Blommersia wittei ,   Witte's Madagascar Frog
Assessed for:  Madagascar   on: 24 Jul 2015   by: Angelica Crottini  
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:   13.656506641642 
Recommended Conservation Actions:   In Situ Research, Ex Situ Research 
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 widely distributed in northwestern and northeastern Madagascar. There are many recods from the south and west of Madagascar, but these might prove to be a different sibling species. An integrative taxomonic revision of this taxon is strongly needed, as all these populations might also be of the same species.
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? Yes This species occurs in at least three formally protected ares (Nosy Be, Ankarafantsika and Montagne d'Ambre).
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 Suitable habitat for reintroduction of B. wittei exists both within and outside protected areas (e.g.: Nosy Be, Ankarafantsika, Montagne d'Ambre, Lokobe, Sambava)
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? Species is effectively protected
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? Yes This species can be locally quite abundant and it is likely that the population in the wild is large enough to eventually recover naturally.
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 This taxon exibits the typical reproductive mode, morphology and behaviour of Blommersia species.
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
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 It is quiet abundant in the wild and has a generalized habits for Blommerisa species, so developing know-how on this species can serve for almost all eth other species of teh Blommerisa genus (except one).
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 This taxon is active also during the day, but it does not have a partcularly attractive aspect. No Blommersia species (expecpt B. angolafa) can be ambassador of the genus.
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? Yes the species is locally abundant.
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 This taxon is now composed of two different units: Blommerisa wittei and B. sp. aff. wittei "Isalo" which is occurring in the west and south west of the island. A compete revision of these taxa is need. Some researchers currently think these taxa will qualify as a single species.

www.amphibianark.org  | Facebook  | Contact Us