348:
208:
86:
42:
61:
312:. They construct complex burrow systems within large artificial mounds. Typical mounds are 13.6 by 8.7 m (45 by 29 ft) across, and 1.25 m (4 ft 1 in) in height, and have an average of 23 burrow entrances. Within the mound, the burrow system has up to three levels and contains numerous chambers and dead-end tunnels.
264:
The plains viscacha rat is a moderately-sized rat, with a large head, long tail, and short ears. Adults measure about 13 cm (5.1 in) in total length, with a 15 cm (5.9 in) tail, and weigh an average of 90 g (3.2 oz), with males being slightly larger than females. The rat
816:
Houck, Marlys L.; Koepfli, Klaus-Peter; Hains, Taylor; Khan, Ruqayya; Charter, Suellen J.; Fronczek, Julie A.; Misuraca, Ann C.; Kliver, Sergei; Perelman, Polina L.; Beklemisheva, Violetta; Graphodatsky, Alexander; Luo, Shu-Jin; O’Brien, Stephen J.; Lim, Norman T.-L.; Chin, Jason S. C. (2023-04-12).
394:
within the animal's reproductive organs. A comparison of the chromosomes of the plains viscacha rat and the mountain viscacha rat suggested that the chromosomes of the plains viscacha rat increased relatively rapidly (in evolutionary terms) due to a diverse set of highly repetitive elements. The
335:
saltbushes with their teeth and bristles around their mouths before eating them. Although this reduces their salt intake, they still produce highly concentrated urine to help maintain their water balance.
857:
386:
count 2x = 2n = 56). Some later studies have cast doubt on its tetraploid nature, while others have reasserted it. The doubling of its chromosome number was presumably by errors in
1680:
1536:
1675:
1655:
1601:
1096:
339:
The young are born blind, and weighing about 4 g (0.14 oz). Their eyes open at about six days, and they begin to take solid food at ten days.
1510:
1549:
587:
509:
347:
533:
Pablo Teta; Ulyses F. J. Pardiñas; Daniel E. Udrizar
Sauthier i Milton H. Gallardo (2014), "A new species of the tetraploid vizcacha rat
1670:
374:= 2n) mammal, thought to have arisen by hybridization and chromosome doubling from an ancestor (very possibly closely related to the
1575:
819:"Chromosome-length genome assemblies and cytogenomic analyses of pangolins reveal remarkable chromosome counts and plasticity"
1593:
1089:
1554:
355:
This species of rodent has (as of 2023) the third highest number of chromosomes of any known mammal (2n = 102), behind the
1665:
331:, although they will occasionally eat other plants such as grass. The rats scrape off and discard salt from the leaves of
858:"The Bolivian Bamboo Rat, Dactylomys boliviensis (Rodentia: Echimyidae), a new record for chromosome number in a mammal"
290:
85:
1588:
1471:
960:
Gallardo, M.H.; González, CA; Cebrián, I (2006), "Molecular cytogenetics and allotetraploidy in the red vizcacha rat,
491:
1436:
1357:
643:
1606:
1463:
1082:
635:
197:
1366:
879:
Svartman, Marta; Stone, Gary; Stanyon, Roscoe (2005). "Molecular cytogenetics discards polyploidy in mammals".
1233:
996:
1660:
1398:
1476:
606:
1382:
1279:
1270:
375:
180:
610:
1497:
1445:
1170:
1034:
741:
539:
399:
are roughly twice normal size, thought to be by virtue of having twice as many sets of chromosomes.
1302:
1293:
445:
360:
50:
767:
Evans, Ben J.; Upham, Nathan S.; Golding, Brian G.; Ojeda, Ricardo A.; Ojeda, Agustina A. (2017).
732:
Diaz, G.B. & Ojeda R.A. (1999). "Kidney structure and allometry of
Argentine desert rodents".
1060:
714:
679:
294:
80:
1178:
1541:
1450:
207:
1627:
1484:
1217:
1201:
1052:
979:
896:
838:
798:
515:
505:
286:
1632:
1162:
1042:
969:
937:
927:
888:
830:
788:
780:
749:
706:
671:
602:
558:
548:
499:
440:
297:, between 300 and 1,400 m (980 and 4,590 ft). There are no recognised subspecies.
282:
1567:
1614:
697:
Mares, M.A.; et al. (1997). "How desert rodents overcome halophytic plant defenses".
658:
Torres-Mura, J.C. (1989). "Herbivorous specialization of the South
American desert rodent
65:
1074:
1038:
745:
265:
has buff-yellow fur with white underparts, fading to dark brown at the tip of the tail.
1142:
942:
915:
793:
768:
41:
914:
Graphodatsky, Alexander S.; Trifonov, Vladimir A.; Stanyon, Roscoe (12 October 2011).
17:
1649:
1562:
1256:
1247:
997:"New analysis of rare Argentinian rat unlocks origin of the largest mammalian genome"
495:
431:
422:
356:
252:
157:
70:
1489:
1225:
1106:
1064:
309:
300:
The species is threatened by destruction of its fragmented and restricted habitat.
243:
147:
636:"Desert dreams: seeking the secret mammals of the salt pans - Naturalist at Large"
1580:
1523:
1430:
1209:
974:
892:
396:
1421:
834:
383:
367:
842:
818:
1153:
519:
316:
278:
247:
97:
1056:
983:
932:
900:
802:
753:
553:
1619:
1415:
1124:
784:
321:
117:
1515:
1192:
718:
683:
563:
391:
387:
274:
968:, vol. 88, no. 2 (published August 2006), pp. 214–221,
1528:
1458:
1326:
1317:
1136:
1130:
1118:
371:
327:
239:
137:
127:
107:
1392:
710:
675:
1047:
1022:
346:
501:
Mammal
Species of the World: A Taxonomic and Geographic Reference
537:(Caviomorpha, Octodontidae) from central Patagonia, Argentina",
1502:
1396:
1078:
504:(3rd ed.). Johns Hopkins University Press. p. 1573.
416:
414:
412:
916:"The genome diversity and karyotype evolution of mammals"
856:
Dunnam, J. L.; Salazar-Bravo, J.; Yates, T. L. (2001).
607:
10.1644/1545-1410(2000)646<1:tb>2.0.co;2
1405:
1338:
1315:
1291:
1268:
1245:
1190:
1151:
955:
953:
315:The rats are herbivorous, feeding primarily on
473:Proceedings of the New England Zoological Club
446:10.2305/IUCN.UK.2016-2.RLTS.T22586A78323698.en
1090:
8:
769:"Evolution of the largest mammalian genome"
1681:Taxa named by Barbara Lawrence (zoologist)
1393:
1097:
1083:
1075:
581:
579:
577:
575:
573:
250:. It is one of three species in the genus
206:
59:
40:
31:
1046:
973:
941:
931:
792:
562:
552:
444:
467:Lawrence, B. (1941), "A new species of
408:
308:Plains viscacha rats are solitary, and
1023:"Discovery of tetraploidy in a mammal"
490:Woods, C.A.; Kilpatrick, C.W. (2005).
281:, where it has a fragmented range in
1676:Endemic rodentia species of Argentina
1656:IUCN Red List near threatened species
634:Mares, Michael A. (1 November 2003).
7:
1021:Gallardo, M.H.; et al. (1999).
366:It was described as the first known
432:IUCN Red List of Threatened Species
868:(2): 121–126 – via Springer.
25:
1369:Tympanoctomys loschalchalerosorum
586:Diaz, G.B.; et al. (2000).
84:
351:Plains viscacha rat chromosomes
1:
773:Genome Biology and Evolution
734:Journal of Arid Environments
1360:(Tympanoctomys kirchnerorum
975:10.1016/j.ygeno.2006.02.010
964:(Rodentia, Octodontidae)",
893:10.1016/j.ygeno.2004.12.004
492:"Infraorder Hystricognathi"
273:The plains viscacha rat is
1697:
1367:Chalchalero viscacha rat (
835:10.1007/s10577-023-09722-y
1671:Mammals described in 1941
1379:
1113:
1105:Extant species of family
289:. Its natural habitat is
205:
186:
179:
81:Scientific classification
79:
57:
48:
39:
34:
1358:Kirchner's viscacha rat
1352:(Tympanoctomys barrerae)
1259:(Octodontomys gliroides)
588:"Tympanoctomys barrerae"
269:Distribution and habitat
359:(2n = 113/114) and the
1464:tympanoctomys-barrerae
1451:Tympanoctomys_barrerae
1437:Tympanoctomys barrerae
1407:Tympanoctomys barrerae
1280:Mountain viscacha rat
962:Tympanoctomys barrerae
933:10.1186/1755-8166-4-22
920:Molecular Cytogenetics
754:10.1006/jare.1998.0472
660:Tympanoctomys barrerae
498:; Reeder, D.M (eds.).
425:Tympanoctomys barrerae
352:
235:Tympanoctomys barrerae
190:Tympanoctomys barrerae
18:Tympanoctomys barrerae
1305:Pipanacoctomys aureus
1303:Golden viscacha rat (
1236:(Octodon ricardojeda)
1234:Ricardo Ojeda's degu
554:10.1644/13-MAMM-A-160
439:: e.T22586A78323698.
376:mountain vizcacha rat
350:
304:Biology and behaviour
1666:Mammals of Argentina
1350:Plains viscacha rat
664:Journal of Mammalogy
540:Journal of Mammalogy
319:vegetation, such as
35:Plains viscacha rat
1329:(Spalacopus cyanus)
1228:(Octodon pacificus)
1173:(Aconaemys porteri)
1039:1999Natur.401..341G
823:Chromosome Research
746:1999JArEn..41..453D
361:Bolivian bamboo rat
277:to central western
222:plains vizcacha rat
218:plains viscacha rat
51:Conservation status
1218:Moon-toothed degu
1204:(Octodon bridgesi)
1171:Porter's rock rat
1165:(Aconaemys fuscus)
785:10.1093/gbe/evx113
421:Roach, N. (2016).
353:
238:) is a species of
1643:
1642:
1628:Open Tree of Life
1399:Taxon identifiers
1390:
1389:
1220:(Octodon lunatus)
1181:(Aconaemys sagei)
1163:Chilean rock rat
862:Mammalian Biology
595:Mammalian Species
511:978-0-8018-8221-0
471:from Argentina",
214:
213:
74:
27:Species of rodent
16:(Redirected from
1688:
1636:
1635:
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1622:
1610:
1609:
1597:
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1584:
1583:
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1519:
1518:
1506:
1505:
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1480:
1479:
1467:
1466:
1454:
1453:
1441:
1440:
1439:
1426:
1425:
1424:
1394:
1179:Sage's rock rat
1099:
1092:
1085:
1076:
1069:
1068:
1050:
1018:
1012:
1011:
1009:
1008:
993:
987:
986:
977:
957:
948:
947:
945:
935:
911:
905:
904:
876:
870:
869:
853:
847:
846:
813:
807:
806:
796:
779:(6): 1711–1724.
764:
758:
757:
729:
723:
722:
694:
688:
687:
655:
649:
648:
640:
631:
625:
624:
622:
621:
615:
609:. Archived from
592:
583:
568:
567:
566:
556:
530:
524:
523:
487:
481:
480:
464:
458:
457:
455:
453:
448:
418:
291:desert scrubland
283:Mendoza Province
230:red vizcacha rat
226:red viscacha rat
210:
192:
172:T. barrerae
89:
88:
68:
63:
62:
44:
32:
21:
1696:
1695:
1691:
1690:
1689:
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1615:Observation.org
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1540:
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1457:
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1444:
1435:
1434:
1429:
1420:
1419:
1414:
1401:
1391:
1386:
1375:
1334:
1311:
1287:
1282:(Octomys mimax)
1264:
1241:
1212:(Octodon degus)
1202:Bridges's degu
1186:
1147:
1109:
1103:
1073:
1072:
1020:
1019:
1015:
1006:
1004:
995:
994:
990:
959:
958:
951:
913:
912:
908:
878:
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873:
855:
854:
850:
815:
814:
810:
766:
765:
761:
731:
730:
726:
711:10.2307/1313210
705:(11): 699–704.
696:
695:
691:
676:10.2307/1381442
657:
656:
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644:Natural History
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83:
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66:Near Threatened
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60:
53:
28:
23:
22:
15:
12:
11:
5:
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1684:
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1678:
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1507:
1494:
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1468:
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1427:
1411:
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1402:
1397:
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1355:
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1333:
1332:
1323:
1321:
1313:
1312:
1310:
1309:
1299:
1297:
1294:Pipanacoctomys
1289:
1288:
1286:
1285:
1276:
1274:
1266:
1265:
1263:
1262:
1257:Mountain degu
1253:
1251:
1243:
1242:
1240:
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1231:
1223:
1215:
1207:
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1196:
1188:
1187:
1185:
1184:
1176:
1168:
1159:
1157:
1149:
1148:
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1145:
1143:Hystricomorpha
1139:
1133:
1127:
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1114:
1111:
1110:
1104:
1102:
1101:
1094:
1087:
1079:
1071:
1070:
1013:
988:
949:
906:
871:
848:
808:
759:
740:(4): 453–461.
724:
689:
670:(3): 646–648.
650:
626:
569:
525:
510:
482:
459:
407:
406:
404:
401:
344:
341:
305:
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270:
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261:
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242:in the family
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14:
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10:
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4:
3:
2:
1693:
1682:
1679:
1677:
1674:
1672:
1669:
1667:
1664:
1662:
1661:Tympanoctomys
1659:
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1365:
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1348:
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1341:Tympanoctomys
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1229:
1226:Pacific degu
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1214:
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1128:
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1120:
1116:
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1088:
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1081:
1080:
1077:
1066:
1062:
1058:
1054:
1049:
1048:10.1038/43815
1044:
1040:
1036:
1033:(6751): 341.
1032:
1028:
1024:
1017:
1014:
1002:
998:
992:
989:
985:
981:
976:
971:
967:
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944:
939:
934:
929:
925:
921:
917:
910:
907:
902:
898:
894:
890:
887:(4): 425–30.
886:
882:
875:
872:
867:
863:
859:
852:
849:
844:
840:
836:
832:
828:
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616:on 2016-03-04
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535:Tympanoctomys
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502:
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433:
428:
426:
417:
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409:
402:
400:
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393:
389:
385:
381:
380:Octomys mimax
377:
373:
369:
364:
362:
358:
357:tree pangolin
349:
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253:Tympanoctomys
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185:
182:
181:Binomial name
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159:Tympanoctomys
156:
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82:
78:
72:
67:
56:
52:
47:
43:
38:
33:
30:
19:
1406:
1381:
1368:
1359:
1351:
1349:
1340:
1339:
1328:
1316:
1304:
1292:
1281:
1269:
1258:
1248:Octodontomys
1246:
1235:
1227:
1219:
1211:
1210:Common degu
1203:
1191:
1180:
1172:
1164:
1152:
1107:Octodontidae
1030:
1026:
1016:
1005:. Retrieved
1003:. 2017-07-12
1000:
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699:BioScience
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