75:
50:
31:
425:
Both male and female rock cavies care for their young. When both parents are present, the females spend more time with their young than the males do. When the male is absent, the females spend more time with their young than they do when the male is present. Females that raise young on their own are
400:
Studies show that rock cavies have a direct link between their retina and the mediodorsal nucleus in the thalamus, which may provide them with strong visual recognition, emotional learning, and/or enhanced object-reward associative memory. This may partly explain why they are found living in large
412:
The placenta for a rock cavy is similar to other hystricomorph rodents: They have several lobes that are lined with blood vessels and undergo a counter-current blood flow. Blood vessels run from the mother along the placenta and then vessels run from the fetus back over the mother's vessels. This
438:
to several protected areas, and reproduce quickly, so they are currently listed as "least concern" on the IUCN Red List. They are frequently hunted as food by local human populations, which resulted in population decline of 30% in the last 10 years. Their range is also being reduced due to
454:
The most unique feature of the rock cavy placenta is the presence of a subplacenta. Its function is not completely known, but may have a role in hormone secretion. The vessels from the mother and fetus occur in different places in the subplacenta, so it is not used for counter-current
421:
The young are able to eat solid food at 3 days old, but continue to nurse for up to 7 weeks. The milk produced for these young is very dense in energy. This may be due to the lack of water availability in their environment.
390:, defending rock pile shelters against other adult males. The rock piles are chosen to impress the females; once a female chooses a rock pile, she indirectly chooses its guardian as her mate.
409:
Females weigh 700-800 g and give birth to only one or two young, but several litters per year are common. The gestation period averages 75 days. The newborn cavies weigh 90 g.
299:). They are herbivorous, feeding on seeds and leaves of the scrubby vegetation that grows in their territories. This vegetation consists of tender leaves and certain species of creeper.
1672:
426:
more aggressive than females that raise the young with a partner. The young raised by single mothers also gain more weight while nursing compared to those raised by both parents.
834:
Miglino, M.A.; et al. (2004). "Vascular organization of the
Hystricomorph placenta: A comparative study in the agouti, capybara, guinea pig, paca, and rock cavy".
1505:
557:. Departamento de Cultura do Diretório Acadêmico da Faculdade de Filosofia de Pernambuco. Revista Oficial. Vol. ano X. Universidade do Recife. pp. 11–23.
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behavior, with males courting other males. Some paedophilic behavior has also been displayed, with adult males courting juvenile males.
1667:
1662:
528:
Gasparini, J.L.; Peloso, P.L.; Sazima, I. (2007). "New opportunities and hazards brought by humans to the island habitat of the skink
186:
1544:
1562:
1523:
1069:
623:
Nascimento, Expedito Silva do; et al. (2010). "Retinal afferents to the thalamic mediodorsal nucleus in the rock cavy (
379:– active mostly at dawn and dusk. They are able to climb, which makes reaching leaves, seeds, and occasional fruits easier.
1126:
1158:
1557:
1142:
911:
355:-like rodents), which has three subfamilies (formerly two); rock cavies have recently been placed in a new subfamily
724:
1657:
1575:
1205:
1150:
960:
74:
1393:
1189:
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Derrickson, Elissa Miller; et al. (1996). "Milk composition of two precocial, arid-dwelling rodents:
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deforestation. Efforts are underway to breed rock cavies in captivity as a potential food source.
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69:
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Rock cavies usually shelter in crevices. They may be seen resting at all times of day, but are
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Rock cavies live in groups, centered around rock-sheltered dens. Each rock cavy group has an
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1016:
672:"Phylogenetic relationships, ecological correlates, and molecular evolution within the
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918:. Instituto de Chico Mendes de Conservação da Biodiversidade. species 6106.
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allows for a better flow of oxygen between the mother and the fetus.
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126:
116:
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872:
Oliveira, M.F.; et al. (2006). "Placentation in the rock cavy,
347:, based on their porcupine-like jaw muscles. They are in the family
1036:
585:
Tasse, Judy (1986). "Maternal and paternal care in the rock cavy,
770:
Biological
Exuberance: Animal homosexuality and natural diversity
734:
Mammal
Species of the World: A Taxonomic and Geographic Reference
1471:
312:
213:
1391:
949:
479:
Catzeflis, F.; Patton J.; Percequillo, A.; Weksler, M. (2016).
737:(3rd ed.). Johns Hopkins University Press. p. 1556.
474:
472:
470:
311:, and they prefer to reside close to stony mountainsides and
288:
In appearance and habit, they closely resemble the unrelated
307:
Rock cavies are found in dry, rocky areas with low, scrubby
551:
Lapenda, Geraldo Calábria (1962). "O dialecto Xucuru".
783:
781:
618:
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or dominant male and several females. The males are
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1331:
1300:
1291:
1261:
1237:
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1105:
1034:
1025:
934:
Mammals of
Neotropics: Ecuador, Bolivia, and Brazil
670:Rowe, Diane L.; Honeycutt, Rodney L. (March 2002).
523:
521:
363:, and with the closely related rainforest-dwelling
269:weighing up to 1 kg (2.2 lb). Like other
829:
827:
767:
327:state, and have been introduced to the island of
1673:Taxa named by Prince Maximilian of Wied-Neuwied
867:
865:
504:10.2305/IUCN.UK.2016-2.RLTS.T10988A22190269.en
961:
932:Eisenberg, John F.; Redford, Kent H. (2000).
8:
580:
578:
576:
574:
572:
570:
568:
566:
564:
1388:
1297:
1234:
1031:
968:
954:
946:
589:, a South American Hystricomorph rodent".
48:
29:
20:
699:
502:
466:
447:
1127:Southern highland yellow-toothed cavy
723:Woods, C.A.; Kilpatrick, C.W. (2005).
226:which has also been introduced to the
701:10.1093/oxfordjournals.molbev.a004080
7:
1648:IUCN Red List least concern species
490:IUCN Red List of Threatened Species
331:, off the eastern coast of Brazil.
14:
339:Rock cavies belong to the order
265:The rock cavy is a fairly large
73:
688:Molecular Biology and Evolution
890:10.1016/j.placenta.2004.11.012
848:10.1016/j.placenta.2003.11.002
810:10.1086/physzool.69.6.30164266
1:
315:. They are native to eastern
1143:Lowland yellow-toothed cavy
1070:Santa Catarina´s guinea pig
916:(Wied-Neuwied, 1820) - MocĂł"
641:10.1016/j.neulet.2010.03.040
1314:(Hydrochoerus hydrochaeris)
1159:Spix's yellow-toothed cavy
1151:Common yellow-toothed cavy
725:"Infraorder Hystricognathi"
393:They can sometimes display
1689:
1668:Mammals described in 1820
1663:Endemic mammals of Brazil
1374:
987:
976:Extant species of family
281:are grey-brown and their
273:species, their tails are
175:
168:
70:Scientific classification
68:
46:
37:
28:
23:
1206:Shipton's mountain cavy
766:Bagemihl, Bruce (2000).
303:Distribution and habitat
237:The rock cavy is called
1322:(Hydrochoerus isthmius)
1278:(Pediolagus salinicola)
1190:Southern mountain cavy
534:Herpetological Bulletin
1252:(Dolichotis patagonum)
1192:(Microcavia australis)
731:; Reeder, D.M (eds.).
603:10.1002/zoo.1430050105
430:Threats and protection
1610:Paleobiology Database
1208:(Microcavia shiptoni)
1198:Andean mountain cavy
1145:(Galea leucoblephara)
1054:Brazilian guinea pig
798:Physiological Zoology
497:: e.T10988A22190269.
1135:Yellow-toothed cavy
629:Neuroscience Letters
297:convergent evolution
285:tan to light brown.
243:Brazilian Portuguese
1353:(Kerodon rupestris)
1153:(Galea musteloides)
1094:Montane guinea pig
1078:Greater guinea pig
530:Euprepis atlanticus
329:Fernando de Noronha
232:Fernando de Noronha
40:Conservation status
1361:(Kerodon acrobata)
1200:(Microcavia niata)
1072:(Cavia intermedia)
1658:Rodents of Brazil
1635:
1634:
1597:Open Tree of Life
1446:Kerodon_rupestris
1432:Kerodon rupestris
1402:Kerodon rupestris
1394:Taxon identifiers
1385:
1384:
1370:
1369:
1344:
1287:
1286:
1231:
1217:
1216:
1183:
1180:(Mountain cavies)
1137:(Galea flavidens)
1120:
1088:(Cavia porcellus)
1062:Shiny guinea pig
1047:
981:
914:Kerodon rupestris
874:Kerodon rupestris
790:Kerodon rupestris
744:978-0-8018-8221-0
625:Kerodon rupestris
587:Kerodon rupestris
483:Kerodon rupestris
277:or absent. Their
209:Kerodon rupestris
194:
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179:Kerodon rupestris
161:K. rupestris
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16:Species of rodent
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1250:Patagonian mara
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1096:(Cavia tschudii)
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804:(6): 1402–1418.
794:Acomys cahirinus
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434:Rock cavies are
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1359:Acrobatic cavy
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1115:(Yellow-toothed
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1064:(Cavia fulgida)
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926:Further reading
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1293:Hydrochoerinae
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1161:(Galea spixii)
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1056:(Cavia aperea)
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1017:Hystricomorpha
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942:External links
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345:Hystricomorpha
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1223:Dolichotinae
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999:Chordata
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