Parasitology, Harold W. Manter Laboratory of
Date of this Version
2023
Document Type
Article
Citation
Journal of Mammalogy (2023) 104(3): 466–478
doi: 10.1093/jmammal/gyac099
Abstract
South American subterranean rodents of the genus Ctenomys (Rodentia, Ctenomyidae, tuco-tuco) are one of the most diverse genera among mammals. Recently described species, new taxonomic revisions, and new distribution range delimitation made the revision of distribution areas and conservation status of these mammals mandatory. Implementing the first part of the DAMA protocol (document, assess, monitor, act), here we compile updated sets of species distribution range maps and use these and the number of collection localities to assess the conservation status of ctenomyids. We integrate potential for conservation in protected areas, and levels of habitat transformation to revise previous conservation status assessments and propose the first assessment for all Data Deficient or not evaluated species of tuco-tucos. Our results indicate that 53 (78%) of these species are threatened and that 47 (69%) have little or no overlap with protected areas, emphasizing the urgent need to conduct conservation efforts. Here, 18 of 22 species previously classified as Data Deficient resulted in them being put in an at-risk category (VU, EN, CR). In addition, nine species that have not been previously evaluated were classified as threatened, with these two groups comprising more than 47% of the known species. These results posit that the Ctenomyidae are the rodent family with the greatest number of species at risk of extinction. Finally, a total of 33 (49%) species have been reported from three or fewer localities; all considered threatened through the approach implemented in this study. These geographically restricted taxa should be given more attention in conservation programs since the richness of this genus relies on the survival of such species.
Ctenomyidae, tuco-tuco) pertenecen a uno de los generos mas diversos de mamiferos. Especies descritas recientemente, nuevas revisiones taxonomicas y nuevas delimitaciones del rango de distribucion hicieron obligatoria la revision de las areas de distribucion del genero y su estado de conservación. Implementando la primera parte del protocolo DAMA (documentar, evaluar, monitorear, actuar), compilamos una serie de mapas actualizados de los rangos de distribución de especies que, conjuntamente con el numero de localidades de colecta, se utilizaron para evaluar el estado de conservación de los ctenomidos. Tambien integramos el potencial de conservacion en areas protegidas, asi como la transformación del habitat para examinar las evaluaciones del estado de conservacion anteriores y proponemos la primera evaluacion para todas aquellas especies de tuco-tucos con datos deficientes o que no fueron evaluadas. Nuestros resultados indican que 53 (78%) de las especies se encuentran amenazadas y que 47 (69%), tienen solapamiento nulo o escaso con areas protegidas, resaltando la necesidad de conservacion. Dieciocho de las 22 especies anteriormente clasificadas como ‘Con datos insuficientes’ calificaron en alguna categoria de riesgo: vulnerable (VU), amenazada (EN), o en peligro critico (CR). A su vez, nueve especies que no habian sido evaluadas previamente, tambien clasificaron como amenazadas, ambos grupos abarcando mas del 47% del genero. Estos resultados ubican a la familia Ctenomyidae como al grupo de roedores con el mayor numero de especies en riesgo de extincion. Por ultimo, un total de 33 (49%) especies ocurren en tres o menos localidades, que mediante el abordaje implementado en este estudio, todas ellas califican como amenazadas. Estos taxones restringidos geograficamente requieren una mayor atencion en los programas de conservacion, debido a que la riqueza del genero depende de la supervivencia de tales especies.
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Caraballo JM 2023 Filling the gap in distribution ranges SUPPLEMENT 2.docx (10 kB)
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Caraballo JM 2023 Filling the gap in distribution ranges SUPPLEMENT 3.docx (10 kB)
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Caraballo JM 2023 Filling the gap in distribution ranges SUPPLEMENT 7.docx (10 kB)
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Copyright © 2023 Caraballo, Lopez, Botero-Canola, & Gardner. Published by Oxford University Press on behalf of the American Society of Mammalogists. Used by permission.