IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
New Pleistocene cave faunas of the Andes of Central Peru: radiocarbon ages and the survival of low latitude, Pleistocene DNA
Autor/es:
BRUCE J., SHOCKEY; RODOLFO, SALAS-GISMONDI; PATRICE, BABY; JEAN-LOUP, GUYOT; M. C., BALTAZAR; L., HUAMÁN; MARCELO, STUCCHI; FRANÇOIS, PUJOS; J. M., EMERSON; JOHN, FLYNN
Revista:
Paleontologia Electronica
Editorial:
The Society of Vertebrate Paleontology
Referencias:
Lugar: Lawrence; Año: 2009
ISSN:
1094-8074
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; color:blue; letter-spacing:-.15pt; mso-ansi-language:FR; mso-fareast-language:FR;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; color:blue; letter-spacing:-.15pt; mso-ansi-language:FR; mso-fareast-language:FR;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Citizens of the central Andes of Peru have led our team of scientists to their discoveries of Pleistocene cave faunas. These caves (Jatun Uchco, Departamento de Huanuco; Cueva Rosello, Departamento de Junin; and Trigo Jirka, Departamento de Huanuco) preserve numerous carnivorans (Puma, a sabercat, an unnamed large felid, foxes, hognose skunk), deer, vicuna, an extinct horse (†Onohippidium devillei), a chinchillid rodent (cf. Lagidium), bats (Anoura, Desmodus, and Platalina), and sloths (†Megatherium, †Scelidodon, and, †Diabolotherium). Bats were found only in the lowest cave (Jatun Uchco, elevation 2,150 m) and ungulates were found only at Cueva Rosello--the only cave studied in a region of flat terrain. Trigo Jirka preserved ancient sloth feces (†Megatherium) and the keratin claw of †Diabolotherium.No organics were recovered from Jatun Uchco, but collagen for radiocarbon dating and DNA for phylogenetic studies have been isolated from the two higher caves, Cueva Rosello (3,875 m) and Trigo Jirka (2,700 m). Conventional radiometric ages from Cueva Rosello are 23,340 } 120 and 22,220 } 130 years before present and that of Trigo Jirka is 29,140 } 260. DNA from †Onohippidium of Cueva Rosello (12° South latitude) is being used in a phylogenetic study of horses. Likewise, DNA has been isolated from a specimen of †Diabolotherium of Trigo Jirka (10° South). These results indicate that the cool temperatures, low humidity, and the shield from UV radiation of caves at high elevation can permit aDNA studies at low latitudes. Previously, such studies have been limited to latitudes greater than 35° for Pleistocene samples.
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