Amphibians (2017 AZE update consultation)

Please click on the link below to access an Excel spreadsheet listing all the proposed AZE sites triggered by amphibian species. Please post any comments or feedback on these proposed sites on this page (rather than on any of the AZE pages for other taxa) by 31 July 2017. Comments indicating that you have looked through the data, but do not have any suggested amendments or more specific feedback, are also welcome. Many thanks in advance – BirdLife, IUCN and ABC


For a spreadsheet summarising the proposed delistings for amphibians – i.e. 2010 AZE trigger species which have been provisionally determined to longer meet the criteria – please see: Amphibians – proposed 2017 delistings.

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17 Responses to Amphibians (2017 AZE update consultation)

  1. Andriamandranto Ravoahangy says:

    Anodonthyla rouxae occurs in Ambatotsirongorongo NPA (Mahaviasy, & Ravoahangy and al., 2015) . Its rank of frequency is very low, estimated at 1.69%.

    • Janet Scott (IUCN) says:

      Many thanks for your comment on Anodonthyla rouxae. Given the rate of frequency is very low at Ambatotsirongorongo NPA, is there any way of telling if the vast majority of the population is found at Beampingaratsy (Anosy Mountains)?

  2. Janet Scott (IUCN) says:

    Please note that an updated version of the spreadsheet has been posted today (11th July 2017) to include a column indicating, for each trigger species, whether it was also listed as a trigger species in the 2010 dataset or is a proposed new trigger species in 2017.

  3. Janet Scott (IUCN) says:

    Comment from Jennifer Luedtke via email:
    Although Nectophrynoides asperginis is now listed as Extinct in the Wild, reintroductions to the site began in 2012-2013 – work is ongoing to reestablish a viable population.

    • Janet Scott (IUCN) says:

      Many thanks for your comment on Nectophrynoides asperginis. In these circumstances it is appropriate to include an EW trigger species, it will therefore be added to the proposed list in the absence of any further comments to the contrary.

  4. Janet Scott (IUCN) says:

    Comment via email from Suranjan Karunarathna:
    Thank you for information shared.
    Can I nominate Kandian torrent toad (Adenomus_kandianus) – CR species for AZE?
    Attached some information about Kandian torrent toad.

    • Janet Scott (IUCN) says:

      Many thanks for your comment. Adenomus kandianus was on our long list of potential species considered for AZE status, however since its discovery at a second site it no longer meets the criterion of having all or at least 95% of its population restricted to a single site – unless there is evidence to suggest that one of the two sites does contain the vast majority of the population.

      • Janet Scott (IUCN) says:

        Reply via email from Suranjan Karunarathna:
        Thank you so much for your reply regards my quarry…!
        May be next 5 years, they will disappear from the second location. Because of Bad agricultural practices in the mountain.

        • Janet Scott (IUCN) says:

          Thank you for your clarification on the situation. This sounds like a very unfortunate case – however the AZE criteria are based around the situation at the present time and don’t have scope for considering what the situation is likely to move towards in the future. If and when the species does disappear from the second site, then it would qualify as an AZE trigger species: as an additional output of this project the aim is to move from periodic static updates of the AZE list to a more dynamic process, so as and when a site/species meets the criteria it can then be nominated for AZE status through those channels. However I hope that the situation improves/reverses such that it never reaches that point.

  5. Janet Scott (IUCN) says:

    Comment from Jeff Dawson via email:
    I’m emailing you with regard the AZE Review 2017 to propose a new addition. This is for a site we have called the Dominica west coast shrub woodland with the CR mountain chicken (Leptodactylus fallax) as the trigger species. I have also submitted this as a proposed KBA for the current Caribbean KBA review process and attached the files submitted to that here for you.
    The current published Red List assessment for the mountain chicken is out of date and an updated assessment is in review. The information this proposal is based on is from data collected through the Mountain Chicken Recovery Programme which I coordinate.
    In summary, the mountain chickens global population numbers around 130 having been decimated by chytridiomycosis. Two individuals remain on Montserrat with all the others, accounting for 99% of the global wild population, across a handful of sites in the Dominica west coast shrub woodland habitat. None of these sites are currently protected and are threatened by various human activities including construction and pollution of streams.
    As such I believe it meets the AZE criteria: Endangerment – CR; Irreplaceability – 99% of global wild population; Discreteness – all sites restricted to the west coast shrub woodland below 500m, which is unprotected and vulnerable to human development.

    • Janet Scott (IUCN) says:

      Many thanks for your helpful and detailed comments on Leptodactylus fallax. Based on the information you have supplied I agree that this site and trigger species meet the criteria and should be added to the list.

  6. Stewart Macdonald says:

    AZE_7021 is listed as an Australian site but is not in Australia. Looks like it should be “Tanzania, United Republic of” as per the adjacent sites.

    • Janet Scott (IUCN) says:

      Many thanks for your comment – I noticed this error and we have already corrected it in our data (the change should be visible in the map display but won’t appear in the tabular version).

  7. Janet Scott (IUCN) says:

    Comment from Carla Cassini via email:
    I would like to suggest the inclusion of the species Brachycephalus pulex as an AZE amphibian species. The tiny Flea Toad (Brachycephalus pulex) is one of the smallest tetrapod in the world, reaching only 8 mm long when fully grown. It is only knowm to occur at private reserve called Reserva Serra Bonita, located at the munipality of Camacã, state of Bahia, Brazil.
    Brachycephalus pulex is not classified the IUCN Red List, because the list was published in 2001 and the species was described only in 2011 (Napoli et al., 2011). We have no information about the species ecology and natural history to date. The knowledge that we have about B. pulex’s distribution (Dias et al., 2014) would fulfill the criteria of conservation status of the species as Critically Endangered (CR) due to its known area of occupancy estimated to be less than 10 km2. To date, B. pulex is known to occur at five nearby sites at the Serra Bonita Reserve, comprising an area of only 0,5 km2 (Dias et al. 2014, enclosed to this email).

    • Janet Scott (IUCN) says:

      Reply from Janet Scott via email:
      Many thanks for your comment on Brachycephalus pulex. From the information you have provided it sounds as though this species and site will qualify for AZE status in due course. However, in the scope of the current project it can’t be listed as such until it has a published global Red List assessment. As an additional output of this project the aim is to move from periodic static updates of the AZE list to a more dynamic process, so as and when the species is assessed it can then be nominated for AZE status through those channels.

  8. Janet Scott (IUCN) says:

    Summarised from comments received from Aliança Brasileira para a Extinção Zero (the Brazilian Alliance for Zero Extinction, BAZE) regarding sites/species from multiple taxonomic groups:

    1. São Francisco Xavier / Monte Verde – Melanophryniscus peritus – Is listed as DD on Brazilian Redlist.

    2. Murici – Scinax muriciensis – Is listed as DD on Brazilian Redlist.

    3. Ilhabela State Park (Parque Estadual de Ilhabela IBA) – Cycloramphus faustoi – The species is trigger, but the site is incorrect. Real site is Arquipélago de Alcatrazes, recently a Protected Area (Refúgio da Vida Silvestre do Arquipélago de Alcatrazes).

    4. Itatiaia – Holoaden bradei – Last record of this species was in 1979. We can’t affirm where the site would be, as the species hasn’t been seen for so long. As a convention, we determined 30 years as a limit for the last sighting, since it comprises a timespan long enough for two generations of most species. We created a special category for cases like this, when a species is a strong candidate but we lack spatial or population information to indicate the site.

    5. Serra de Maranguape e Aratanha – Adelophryne maranguapensis – Is listed as Vulnerable on Brazilian RedList.

    6. Botucatu State Forest – Proceratophrys moratoi – It shows strong potential to become a trigger soon, but with a site in Itirapina, not Botucatu. There is no confirmation of the extinction of Botucatu and São Carlos populations.

    7. Arquiepelago de Alcatrazes – Scinax alcatraz – ok

    8. Horto Florestal de Santa Cruz – Physalaemus soaresi – ok, but it should be named Floresta Estadual Mário Xavier (current name of the Protected Area).

    9. Rubião Júnior – Bokermannohyla izecksohni – Is listed as DD on Brazilian Redlist.

    10. Campo Grande – Hypsiboas cymbalum – Probably extinct.

    11. Ilha de Porcos Pequena – Scinax faivovichi – Is listed as Vulnerable on Brazilian RedList.

    12. Ilhas Queimada Pequena e Queimada Grande – Scinax peixotoi – ok

    13. Rio Forqueta – Melanophryniscus admirabilis – ok

    • Janet Scott (IUCN) says:

      1. For the global AZE list we need to follow the global IUCN Red List category.
      2. For the global AZE list we need to follow the global IUCN Red List category.
      3. Many thanks for highlighting this error, we will correct the site.
      4. In general we prefer to be precautionary, and we don’t implement any time limit – is there insufficient information even to say that the most likely site for a surviving population is the Parque Nacional de Itatiaia?
      5. For the global AZE list we need to follow the global IUCN Red List category.
      6. This is particularly interesting as your information suggests our global Red List assessment is out of date as it only mentions one site, at Botucatu. Would you be able to give further information on the current status?
      7. OK
      8. Name correction noted
      9. For the global AZE list we need to follow the global IUCN Red List category.
      10. Another discrepancy in the degree of precautionarity, although considering the urban location in combination with the likelihood of extinction I would be inclined to agree that this looks less suitable as an AZE site.
      11. For the global AZE list we need to follow the global IUCN Red List category.
      12. OK
      13. OK

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