Factors affecting the (in)accuracy of mammalian mesocarnivore scat identification in South‐western Europe

Journal of Zoology - Tập 289 Số 4 - Trang 243-250 - 2013
Pedro Monterroso1,2,3, Diana Castro1, Teresa Luísa Silva1,2, Pablo Ferreras3, Raquel Godinho1, Paulo C. Alves1,2,4
1CIBIO/InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Vairão, Portugal
2Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
3Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC–UCLM–JCCM), Ciudad Real, Spain
4Wildlife Biology Program, College of Forestry and Conservation, University of Montana, Missoula, MT, USA

Tóm tắt

AbstractResearch on terrestrial carnivore ecology frequently relies on scat identification and analysis. However, species assignment is commonly based on scat morphology. Potential errors in scat identification are rarely accounted for and might contribute to substantial bias of the final results. Using molecular methods, we evaluate the accuracy of species identification based on morphological characteristics of mammalian mesocarnivore scats collected in two areas in the Iberian Peninsula. Our results revealed that error rates in species assignment of scats based on morphology were highly variable, ranging from 14%, for putative red fox Vulpes vulpes samples, to 88%, for putative wildcats Felis silvestris. The developed models revealed that putative species, season, study area and target species abundance are among the factors involved in identification accuracy. However, the low variability explained suggests that unaccounted factors also had significant effects on accuracy rates. The error rates in scat species assignment constitute a potential source of bias in ecological studies, with serious consequences for the management of threatened species, as unrealistic estimates of status and distribution are prone to occur. Our results suggest that scat identification accuracy rates are circumstance‐specific and therefore should not be transferred or extrapolated. We suggest that scat‐based studies should implement measures (molecular or others) that allow researchers to determine their own circumstance‐specific error rates in scat identification, which should be incorporated in subsequent analyses, ensuring reliable ecological inferences.

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Tài liệu tham khảo

10.1093/acprof:oso/9780199558520.003.0012

Bang P., 2007, Animal Tracks and Signs

10.1007/s10531-006-9114-x

10.1016/j.actao.2006.02.006

10.1111/j.1755-0998.2009.02699.x

10.1007/0-387-22691-5_12

Blanco J.C., 1998, Mamíferos De España

Blondel J., 1999, Biology and wildlife of the Mediterranean region

10.1007/s10592-006-9146-5

10.1071/WR98061

Burnham K.P., 2002, Model selection and multimodel inference: a practical information‐theoretic approach

10.1017/S1367943001001081

10.1017/S0952836904005266

10.4098/AT.arch.94-49

10.1002/9780470515075

10.1017/S0952836902000730

10.1007/s10344-007-0111-5

10.1111/j.1365‐2907.2011.00206.x

10.1046/j.1365-294x.2000.01037.x

10.1007/s10592-007-9364-5

García‐Canseco V., 1997, Parque Nacional de Cabañeros

10.1111/j.1469-7998.1996.tb05412.x

Guzmán J.N., 1997, Parque Nacional de Cabañeros, 225

10.1007/s00299-001-0399-7

10.1111/j.1469-7998.1999.tb00981.x

10.1007/s10344-009-0328-6

Heinemeyer K.S., 2008, Noninvasive survey methods for carnivores, 45

10.1017/S0025315400022736

Iglesias A., 2010, Rastros y huellas de los carnívoros ibéricos

10.1111/j.1469-1795.2008.00195.x

10.1007/s10344-011-0515-0

10.1656/1092-6194(2008)15[249:CTOCTS]2.0.CO;2

10.1007/s10592-006-9203-0

10.2193/2006-292

10.1111/j.1365-2699.2006.01474.x

Mazerolle M.J.(2011).AICcmodavg: model selection and multimodel inference based on (Q)AIC(coffee). R package version 1.13.http://CRAN.Rproject.org/package=AICcmodavg

10.1890/10-1396.1

10.1111/j.1461-0248.2004.00624.x

10.1007/s10164-008-0098-8

10.1071/WR11060

10.1111/j.1469-7998.2009.00585.x

10.1111/j.1365-294X.2007.03606.x

10.1007/s10592-009-9947-4

10.1046/j.1365-294X.2002.01608.x

Palomo L.J., 2007, Atlas y Libro Rojo De Los Mamíferos Terrestres De España

10.1111/j.1469-7998.2006.00179.x

10.1016/j.agee.2009.02.008

Posluszny M., 2007, Diet of sympatric pine marten (Martes martes) and stone marten (Martes foina) identified by genotyping of DNA from faeces, Ann. Zool. Fenn., 44, 269

10.2193/0091-7648(2005)33[189:MTOOIO]2.0.CO;2

R Development Core Team(2008).R: a language and environment for statistical computing.

Rivas‐Martínez S. Penas A.&Díaz T.E.(2004).Mapa Bioclimático de Europa Bioclimas http://www.ucm.es/info/cif/form/maps.htm

Rivas‐Martinez S., 1981, Les étages bioclimatiques de la végétation de la Peninsule Iberique, An. Jard. Bot. Madr., 37, 251

10.1111/j.1365-2907.2008.00134.x

10.1071/WR07030

10.1046/j.0305-1838.2003.00029.x

10.1111/j.1471-8286.2007.01829.x

10.1007/s10344-008-0240-5

10.4098/AT.arch.93-19

10.1093/nar/22.22.4673

10.1644/1545-1542(2005)086[0704:DAFFSH]2.0.CO;2

10.1111/j.0021-8901.2004.00930.x

10.1071/WR00033

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Journal of Zoology

Tập 289 Số 4

243-250

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