Is the painted frog Discoglossus pictus a declining species in Italy? On the reliability of a distributional atlas approach

in Amphibia-Reptilia
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The conservation status of amphibians is often assessed using public databases because of a lack of up-to-date field data. However, it is crucial that this kind of data is used carefully, evaluating the reliability and the consistency of the information. In Italy, the conservation status of the painted frog, Discoglossus pictus, was recently assessed using public databases, and the outcome highlighted a worrying situation for the species. We analyzed the reliability of these conclusions and reassessed the status of the painted frog, taking into account its insular distribution and new data of species occurrence. Our results contrast with the previous analysis and show how an incautious use of public databases can lead to inaccurate assessment of the amphibian conservation status.

Is the painted frog Discoglossus pictus a declining species in Italy? On the reliability of a distributional atlas approach

in Amphibia-Reptilia


AndreoneF.LuiselliL. (2000): The Italian batrachofauna and its conservation status: a statistical assessment. Biol. Conserv. 96: 197-208.

BoschJ.AndreoneF.TejedoM.Donaire-BarrosoD.LizanaM.Martínez-SolanoI.SalvadorA.García-ParísM.GilE.R.SlimaniT.El MoudenH.JogerU.GeniezP.CortiC. (2009): Discoglossus pictus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. Downloaded on 07 February 2012.

BottsE.A.ErasmusB.F.N.AlexanderG.J. (2011): Geographic sampling bias in the South African Frog Atlas Project: implications for conservation planning. Biodivers. Conserv. 20: 119-139.

BulgariniF.CalvarioE.FraticelliF.PetrettiF.SarroccoS. (Eds) (1998): Libro Rosso degli Animali d’Italia – Vertebrati. WWF Italia Roma.

CapulaM. (2006): Discoglossus pictus. In: Atlante degli Anfibi e dei Rettili d’Italia/Atlas of Italian Amphibians and Reptiles – Societas Herpetologica Italica. SindacoR.DoriaG.RazzettiE.BerniniF. Eds PolistampaFirenze.

CapulaM. (2007): Discoglossus pictus Otth, 1837. In: Fauna d’Italia. Amphibia. LanzaB.AndreoneF.BolognaM.A.CortiC.RazzettiE. Eds CalderiniBologna.

CapulaM. (2009): Discoglossus pictus Otth, 1837. In: Anfibi d’Italia. Quaderni di Conservazione della NaturaVol. 29. LanzaB.NistriA.VanniS.Ministero dell’Ambiente e della Tutela del Territorio e del Mare, ISPRA, Grandi & Grandi Editori.

CapulaM.CeccarelliA.LuiselliL. (2005): Amphibians of Italy: a revised checklist. Aldrovrandia 1: 103-110.

DenoëlM. (2012): Newt decline in Western Europe: highlights for relative distribution change within guild. Biolo. Conserv. 21: 2887-2898.

DonaldP.F.FullerR.J. (1998): Ornithological atlas data: a review of uses and limitations. Bird Study 45: 129-145.

D’AmenM.BombiP. (2009): Global warming and biodiversity: Evidence of climate-linked amphibian declines in Italy. Biol. Conserv. 142: 3060-3067.

Di PalmaM.G.RiggioS.RussoG.ViolaniC.ZavaB. (2001): Il Discoglosso (Discoglossus pictus Otth, 1837) nella Conca D’oro (Palermo). Rivista di Idrobiologia 40: 263-269.

ElphickC.S. (1997): Correcting avian richness estimates for unequal sample effort in atlas studies. Ibis 139: 189-190.

GiacobbeD.RestivoS. (2010): Distribuzione dell’erpetofauna nel Parco fluviale dell’Alcantara e nei corsi d’acqua che vi confluiscono. In: Atti del VII Congresso Nazionale Societas Herpetologica Italica. Di TizioL.Di CerboA.Di FrancescoN.CameliA. Eds Ianieri EdizioniPescara.

IUCN (2001): Category & Criteria (version 3.1). IUCN Species Survival Commission (

KéryM.RoyleA.SchmidH.SchaubM.VoletB.HäfligerG.ZbindenN. (2010): Site-occupancy distribution modeling to correct population-trend estimates derived from opportunistic observations. Conserv. Biol. 24: 1388-1397.

LilloF.FaraoneF.P.Lo ValvoM. (2011): Can the introduction of Xenopus laevis affect native amphibian populations? The effects of a biological invasion. Biol. Invasions 13: 1533-1541.

Lo ValvoF.LongoA.M. (2001): Anfibi e rettili di Sicilia. Doramarkus WWF. Palermo.

RestivoS.GiacobbeD.Lo ParoG. (2010): Nuovi rilevamenti sull’erpetofauna dell’area peloritana (Sicilia nord-orientale). Atti Soc. italiana Sci. Nat. Museo Civico Storia Naturale Milano 151: 77-97.

RondininiC.WilsonK.A.BoitaniL.GranthamH.PossinghamH.P. (2006): Tradeoffs of different types of species occurrence data for use in systematic conservation planning. Ecol. Lett. 9: 1136-1145.

RuffoS.StochF. (Eds) (2005): Checklist e distribuzione della fauna italiana. Memorie del Museo Civico di Storia Naturale di Verona 16: 1-307.

SHI (1996): Atlante provvisorio degli Anfibi e Rettili italiani. Annali del Museo Civico di Storia Naturale “G. Doria” 91: 95-178.

SHI (2011): Assessing the status of amphibian breeding sites in Italy: a national survey. Acta Herpetol. 6: 119-126.

SkellyD.K.YurewiczK.L.WernerE.E.RelyeaR.A. (2003): Estimating decline and distributional change in Amphibians. Conserv. Biol. 17: 744-751.

TurrisiG.F.VaccaroA. (1998): Contributo alla conoscenza degli anfibi e rettili di Sicilia. Bollettino dell’Accademia Gioenia Scienze Naturali Catania 30: 5-88.

TurrisiG.F. (2008): Discoglosso dipinto Discoglossus pictus pictus Otth 1837. In: AAVV: Atlante della Biodiversità della Sicilia: Vertebrati terrestri. Studi e Ricerche 6 Arpa Sicilia Palermo.


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    Distribution of Year of last observation in the amphibian CKmap database for the whole Italy of (a) and Sicily (b).

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    Variation in the estimated decline of Discoglossus pictus as a function of threshold year (from 1983 to 1998).

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    Italian distribution of Discoglossus pictus. Circles: occurrence confirmed after 1985 using CKmap database. Triangles: original new occurrence data (2008-2012). Triangles with white circle: recently published presence data (2010). Crosses: unconfirmed historical occurrence using CKmap database (before 1985).


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