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Assessment Results




© 2007 Frank Teigler (1 of 34 )

AmphibiaWeb species account




IUCN Red List assessment


Conservation Needs Assessment

Ptychadena mascareniensis ,   Mascarene Grass Frog, Broad-banded Ridged Frog
Assessed for:  Seychelles   on: 14 Nov 2018   by: Jim Labisko  
Assessment Status: Completed  
Order:   Anura     Family:   Ptychadenidae

IUCN Global Red List:   Least Concern (LC)   
IUCN National Red List:   (not assessed)   
Distribution:     Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mozambique, Réunion, Rwanda, Seychelles, South Sudan, Tanzania, United Republic of, Zambia, Zimbabwe, Angola, Cameroon, Central African Republic, Equatorial Guinea, Gabon, Egypt, Sudan, Botswana, Namibia, South Africa, Cote d'Ivoire, Ghana, Guinea, Guinea-Bissau, Liberia, Mauritania, Nigeria, Senegal, Sierra Leone  
Evolutionary Distinctiveness score:   23.156382 
Recommended Conservation Actions:   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)
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 - 50
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 / probably This species is found in a variety of habitats across the archipelago, usually low-lying coastal zones, some of which fall within protected areas. It is commonly found in and around human habitation, suggesting low/little impact from anthropogenic activity.
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 Ptychadena mascareniensis is an introduced anuran to the Seychelles. It successfully colonised a number of islands since its introduction.
6 Previous reintroductions Have reintroduction or translocation attempts been made in the past for this species? No No conservation-related introductions have been made (or are required), although the species has been successfully introduced to the islands and breeds readily.
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 does not require conservation action The direct and associated threats posed by the potential introduction of novel pathogens (e.g. Bd, Bsal, Ranavirus) are a very real risk, especially as its role as a potental vector for chytrid is unclear at present.
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
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? 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? No
15 Captive breeding Has this species been successfully maintained and bred in captivity? Not held in captivity to date Unknown at present.
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 species calls loudly (especially after rainfall) and is commonly encountered around human habitation. There is potential for employing the Mascarene frog to highlight (for example) the ecological importance of amphibians and their role in pest control, and also as an indicator should pathogens arrive and impact populations - this could alert practitioners and inform activities in respect of Seychelles' endemic anurans and caecilians.
17 Mandate Is there an existing conservation mandate recommending the ex situ conservation of this taxon? Yes
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

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