Jump to content

Volcano rabbit

From Wikipedia, the free encyclopedia
(Redirected from Romerolagus)

Volcano rabbit
Temporal range: Priabonian–recent[1]
35–0 Ma
Romerolagus diazi at the Chapultepec Zoo in México City
CITES Appendix I (CITES)[3]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Lagomorpha
Family: Leporidae
Genus: Romerolagus
Merriam, 1896
Species:
R. diazi
Binomial name
Romerolagus diazi
Volcano rabbit range
Synonyms[4]

The volcano rabbit (Romerolagus diazi) (Spanish: conejo de los volcanes), also known as the teporingo or zacatuche, is a small mammal in the family Leporidae that resides on the slopes of volcanoes in Mexico. It is the only species in the genus Romerolagus, and is the world's second-smallest rabbit, second only to the pygmy rabbit. It has small rounded ears, short legs, a large forehead, and short, thick fur. It weighs approximately 390–600 g (0.86–1.3 lb) and has a life span of 7 to 9 years. The volcano rabbit lives in groups of 2 to 5 animals in burrows (underground nests) and runways among bunchgrass. The burrows can be as long as 5 m and as deep as 40 cm. Up to 3 young are produced per litter, born in the burrows. In semi-captivity, however, they do not make burrows and the young are born in nests made in the grass.

Unlike many species of rabbits (and similar to pikas), the volcano rabbit emits high-pitched sounds instead of thumping its feet on the ground to warn other rabbits of danger. It is crepuscular and highly active during twilight, dawn and all times in between. Populations have been estimated as approximately 7,000 adult individuals over their entire range.

Taxonomy and etymology

[edit]

Romerolagus diazi was first described by the head of the Mexican Geographical and Exploring Commission, Fernando Ferrari-Pérez, in 1893 as a member of the hares (genus Lepus), using the scientific name Lepus diazi and common name conejo del Volcán (volcano rabbit).[5] The species name diazi honors the Mexican cartographer[6] Agustín Díaz, who published the work where the species was first described.[7] Its type locality was "near San Martín Texmelusán, northeastern slope of Volcán Iztaccíhuatl [Ixtaccíhuatl, Puebla], Mexico".[8][9] It was separately described as the Popocatepetl rabbit, Romerolagus nelsoni, in 1896 by American zoologist Clinton Hart Merriam in an account that made no reference to the earlier work of Ferrari-Pérez. The article noted a type specimen that was collected at "Mt. Popocatepetl, Mexico (altitude 3,350 meters or 11,000 feet)" by Edward William Nelson, an American naturalist for whom the species was named. Merriam noted several characteristics that differed significantly from any member of the hares, such as its anatomy and means of locomotion (running on all four legs rather than hopping), and gave it the genus name Romerolagus in honor of Matías Romero, a supporter of the United States Biological Survey in Mexico.[10] It was given its current common and scientific names by the American zoologist Gerrit Smith Miller Jr. in 1911, who noted the discrepancy between the two descriptions and, after consulting with Nelson and Ferrari-Pérez, clarified the nomenclature of the species.[5] From this point up until the 1950s, the authority of the species was attributed to Díaz alone; biologist Paulino Rojas Mendoza argued in 1952 that the correct name would be one that credits Ferrari-Pérez as well,[11] which has been accepted ever since.[12]

The volcano rabbit is named for its preferred habitat, that being the slopes of volcanoes. One Nahuatl name, zacatochtle, refers to the rabbit's relationship with subalpine tussock grass in the genus Festuca (referred to as zacate in Spanish, zacatl in Nahuatl). The name comes from the combination of zacatl and tochtle ('rabbit'), and has been modified to the currently-used epithet zacatuche ('grass rabbit').[1][12] Another common name, teporingo, likely derives from Classical Nahuatl, combining tepētl ('mountain'), olīn ('movement') and the suffix -co referring to location.[13]

Phylogeny

[edit]

No subspecies of the volcano rabbit are recognized,[9][2] and it is the only species within its genus.[8] No fossils of the volcano rabbit are known,[14] but analysis of its morphology and genetic records[15] indicate that it is the most basal, or most primitive, species among the leporids, first appearing during the Late Eocene.[1] The species has high genetic diversity and is separated into five haplogroups across its distribution; these groups appear to have some level of gene flow between them due to the short distance between populations.[16] The volcano rabbit's sister clade, the group that makes up the species' closest relatives, includes the European rabbit (Oryctolagus cuniculus) and the hares (in genus Lepus).[15] The following cladogram is based on mitochondrial genome analysis of the volcano rabbit, the European rabbit, the snowshoe hare (Lepus americanus), and the black-tailed jackrabbit (Lepus californicus),[15] as well as a broader phylogenetic tree produced by biologist Leandro Iraçabal Nunes and colleagues:[17]

Leporid phylogeny minus unstable taxa (Bunolagus, some members of Sylvilagus)[17]

Caprolagus (hispid hare)

Pentalagus (Amami rabbit)

Sylvilagus (cottontail rabbits)

Lepus (hares)

Oryctolagus (European rabbit)

Romerolagus (volcano rabbit)

Pronolagus (Red rock hares)

Poelagus (Bunyoro rabbit)

Nesolagus (striped rabbits)

Ochotonidae (pikas)

Characteristics

[edit]
A taxidermied volcano rabbit

The volcano rabbit is small, having an adult weight that ranges from 386 to 602 g (0.851 to 1.327 lb)[1] and a total length of 234 to 311 millimetres (9.2 to 12.2 in). Its ears are small and rounded, measuring less than 40 millimetres (1.6 in),[18] and the hind feet are short (only 42 to 55 millimetres (1.7 to 2.2 in)).[1] Its small size relates to its selective dietary habits.[19] The base color of the rabbit's fur has been described as "antimony yellow".[20] Its short, dense fur ranges in color from brown to black,[21] with the dorsal fur coat (on the back of the animal) being yellowish brown and black at the tips. Fur on the rabbit's underside is soft and dense, but has the same color as the dorsal fur. The coat does not change color from one season to the next, though it does undergo molting over the course of the year in four stages. First, hair is lost, then melanin disappears, then melanin is deposited at the site of hair loss, after which hair regrows.[1] The volcano rabbit strongly resembles pikas, closely related mountain-dwelling lagomorphs.[22]

The skull of the volcano rabbit has small triangle-shaped projections from the brow ridge towards the back of the head.[23] It has a long palate, and a distinctly separated interparietal bone.[24][18] The cheekbones are wide, larger towards the back of the head, and the auditory bullae (bony structures that enclose the external structure of the ear) are large compared to those of other leporids[24]—larger than the foramen magnum (the hole at the base of the skull that the spinal cord passes through),[18] though the tympanic bullae (which enclose the internal ear structure) are relatively normal. The clavicle is complete, and connects to the sternum directly;[8] the bone structure at the front of the sternum is wider than it is long. The central part of the sternum is segmented into 3 parts, which are articulated with 6 pairs of the ribs. The pituitary gland is small, and connects to the first three lumbar vertebrae. The rabbit's navicular bone is short and does not extend below the metatarsal bones.[25] Like other leporids, it has a dental formula of 2.0.3.31.0.2.3 × 2 = 28—two pairs of upper and one pair of lower incisors, no canines, three upper and two lower premolars on each side, and three upper and lower molars on either side of the jaw.[22][26] Their salivary glands resemble those of other rabbits.[27] The rabbit's morphological features resemble those of several extinct leporids from the Tertiary period, including †Nekrolagus, which lived during the Pliocene.[8]

Distribution and habitat

[edit]
Photo of a snow-covered volcano in the daytime with pine trees in the foreground
Popocatépetl, one of four locations around which the volcano rabbit lives. Forests of Pinus hartwegii, a preferred species of the rabbit, can be seen around the volcano.

Volcano rabbits are endemic to Mexico.[28] Specifically, the rabbit is native to the alpine scrublands surrounding four volcanoes (Cerro Tláloc, Popocatépetl, Iztaccíhuatl, and El Pelado) just southeast of Mexico City[29] in an area of only 386 square kilometres (149 sq mi).[15] The largest of these volcanic regions is within the Iztaccíhuatl–Popocatépetl National Park, with other areas including the Chichinautzin and Pelado volcanoes.[30][31][29] Historically, the volcano rabbit likely occupied the Sierra Nevada and Sierra Chichinautzin mountain ranges.[1] The range of the volcano rabbit has since been fragmented into 16 (later 19) individual patches[2] across the Trans-Mexican Volcanic Belt due to human disturbance.[28] Volcano rabbits are commonly found at altitudes between 3,150 and 3,400 metres (10,330 and 11,150 ft), but can occur anywhere from 2,800 to 4,250 metres (9,190 to 13,940 ft).[1]

The soil of the volcano rabbit's habitat consists mostly of andosols and lithosols, and the vegetation includes Nearctic and Neotropical varieties.[28] The local climate is temperate, subhumid, and has a mean annual temperature of 9.6 °C (49.3 °F). Annual rainfall averages at about 1,500 millimetres (59 in).[22] The plants Festuca tolucensis and Pinus hartwegii are abundant in volcano rabbit habitats.[28] The species prefers habitats with tall, dense vegetation from a variety of "zacatón" bunch grasses, such as Muhlenbergia macroura and Festuca amplissima.[22] Volcano rabbits show strong preferences for open pine forests, open pine woodland, and mixed alder pine forest habitats.[19] Human activity in the area has had a great impact upon the preferred habitat of the volcano rabbit,[28] as its habitat has been fragmented by highways, farming, afforestation, and unsound fire and grazing practices.[30][31][32] A study on the effects of climate change upon volcano rabbit populations concluded that fluctuations in climate affected rabbits more on the edge of their habitable range.[33]

The volcano rabbit was once considered to live in the Nevado de Toluca, but research conducted by Hoth et al., in relation to its distribution in 1987 found no records of this species there, including the site where Tikul Álvarez (IPN) collected a specimen in 1975 (Nevado de Toluca, 4 km S, 2 km W Raíces, 3350 masl).[30] Though there was an unconfirmed sighting in the region in August 2003, no permanent volcano rabbit colony has been documented in Nevado de Toluca and it was declared extinct within this portion of its range in 2018;[34] populations exist elsewhere within the Trans-Mexican Volcanic Belt and in captivity.[30][35][36] As of 2019, the International Union for Conservation of Nature no longer mentions the Nevado de Toluca as a current or potential site for the distribution of this species.[2]

Behavior and ecology

[edit]

The volcano rabbit creates runways similar to those made by microtine rodents to navigate their habitat. Its burrows consist of tunnels with the entrances hidden under dense grass clumps[37] or in cracks in the soil, and can have a length of up to 5 metres (16 ft) and depth of up to 40 centimetres (16 in) under the soil's surface.[1] These burrows may have other entrances to allow for escape, and the tunnels often weave around rocks and roots. Volcano rabbits may opportunistically use burrows abandoned by other mammals, such as gophers and badgers,[37] as do other rabbits[38] besides the European rabbit.[39] Its speediness and hind limb development relative to its body size correlates to a need for evasive actions. It is relatively slow and vulnerable in open habitats; therefore it takes comfort in high, covered areas.[19]

Diet

[edit]
A photo of a volcano rabbit with a plant in its mouth
A volcano rabbit feeding

The volcano rabbit feeds primarily on grasses such as Festuca amplissima, Muhlenbergia macroura, Jarava ichu, and Eryngium rosei. The rabbits also use these plants as cover to hide from predators. M. macroura was found to be in 89% of pellets of the volcano rabbits, suggesting that this is the base of their diet, but it does not actually provide the necessary energy and protein needs of the rabbits. By supplementing their diet with 15 other forms of plant life, volcano rabbits can get their required nutrition. Other plant species that support the volcano rabbit are M. quadidentata, Pinus hartwegii, F. tolucensis,[40] Alchemilla sibbaldiifolia, Museniopsis arguta and Cunila tritifolium.[22] Volcano rabbits also consume leaves, foliage, and flowers indiscriminately under poor conditions, as habitat loss has eliminated much of their food sources. Protein acquisition is the primary limiting factor on the size of the populations of each of the four volcanoes on which the species is located. Studies show that many individuals of the population suffer from serious weight loss and starvation.[40]

Seasonal changes also affect the diet of the volcano rabbit greatly. The grasses it normally consumes are abundant during wet seasons. During the dry season, the volcano rabbit feasts on shrubs and small trees, as well as other woody plants. During the winter plants, these woody plants make up most of their diet, as well as the primary building material for their nests.[40] In captivity, volcano rabbits are often given pellet food typical for chinchillas.[22]

Reproduction

[edit]

Volcano rabbits have a very narrow gestational period. In a 1985 study, all females gave birth between 39 and 41 days after coitus;[41] later works note the gestational period as just 39 days. Up to three young are produced per litter,[1] with 4 to 5 litters produced per year. The young wean off the mother until they are roughly 28 days old, and reach sexual maturity after 185 days.[42] The species is sexually active year-round, though the period of greatest activity is during the summer. Their nests, shallow depressions dug in the ground lined with shredded grasses, plant fragments, and fur, are built only from April to September.[1] These nests are 11 centimetres (4.3 in) in depth and 15 centimetres (5.9 in) wide. This nesting behavior is similar to that of female cottontail rabbits.[37] The volcano rabbit has difficulty breeding in small enclosures.[19]

Predators and parasites

[edit]

The volcano rabbit is prey for several species; in Iztaccíhuatl–Popocatépetl National Park, it makes up 12.5% of prey for the bobcat, and 5.5% for the coyote. Long-tailed weasels, red-tailed hawks, and rattlesnakes are also significant predators.[2] Feral dogs present around villages may also prey upon the volcano rabbit.[1]

Nematodes, cestodes, fleas and mites affect the volcano rabbit, several of which are species-specific. It is parasitized by the mites Cheyletiella mexicana and Cheyletiella parasitovorax, which is notable as mites in genus Cheyletiella do not tend to occur on the same host. Other species-specific parasites are Boreostrongylus romerolagi, Dermatoxys romerolagi, Lamothiella romerolagi, Anoplocephaloides romerolagi, Cediopsylla tepolita, Hoplopsyllus pectinatus.[1] Ticks (in family Ixodidae), chiggers (in family Trombiculidae), and botfly larvae (in family Cuterebridae) have also been found on wild volcano rabbits.[43]

Status and conservation

[edit]

Threats to R. diazi include logging, harvesting of grasses, livestock grazing, habitat destruction, urban expansion, highway construction and frequent forest fires.[30] Unsound management policies of its habitat in National Parks and outside, mainly by afforestation, have also threatened volcano rabbit populations.[31][1] The IUCN estimated in 2019 that roughly 7,000 rabbits remained in the wild, and noted that the population was decreasing.[2]

In terms of conservation efforts, various captive breeding programs have been established with relative success, but infant mortality in captivity is high.[21] Actions toward conservation should be focused on the enforcement of laws which forbid hunting and trading of the volcano rabbit. Furthermore, efforts must be put toward habitat management, specifically the control of forest fires and livestock overgrazing of grasses. Lastly, it would be beneficial to enact education programs regarding R. diazi and the various threats that face it. The public should also be educated about the volcano rabbit's protected status, as many are unaware that it is illegal to hunt R. diazi.[citation needed]

Threats and decline

[edit]

Numerous studies conducted during the 1980s and 1990s agreed that the habitat of the volcano rabbit was shrinking due to a combination of natural and anthropogenic causes. There is evidence that its range has shrunk significantly during the last 18,000 years due to a 5–6 °C (41–43 °F) increase in the prevailing temperature, and its distribution is now divided into 16 patches. The fragmentation of the volcano rabbit's distribution has resulted from a long-term warming trend that has driven it to progressively higher altitudes and the relatively recent construction of highways that divide its habitat.[44]

Declines in the R. diazi population have been occurring due a number of changes in vegetation, climate, and, thus, elevation. The volcano rabbit is extremely vulnerable to the effects of climate change and other anthropogenic intrusions because of its extremely limited range and specialized diet. Patches of vegetation that R. diazi uses for survival are becoming fragmented, isolated and smaller, rendering the environment more open and therefore less suitable for its survival. Because the volcano rabbit inhabits the area surrounding Mexico City, Mexico's most populous region, it has suffered a very high rate of habitat destruction.[44]

Hunting is another threat to the volcano rabbit, despite the fact that R. diazi is listed under Appendix 1 of CITES[45][9] and it is illegal to hunt under Mexican law. Many are unaware that R. diazi is protected and officials do not adequately enforce its protection. Hunting, livestock grazing, and fires can even harm R. diazi within national parks that are protected such as Izta-Popo and Zoquiapan National Parks.

The cottontail rabbit, Sylvilagus, is expanding into the volcano rabbit's niche, but there is "no evidence that [volcano rabbits'] habitat selection is a response to competitive exclusion." The volcano rabbit has been severely pressured by human intrusion into its habitat. Anthropogenic disturbance enables other rabbit species to flourish in grasslands, increasing competition with the volcano rabbit.[19]

Conservation

[edit]

Volcano rabbits have been bred in captivity,[35] but there is evidence that the species loses a significant amount of genetic diversity when it reproduces in such conditions. A comparative study done on wild and captive volcano rabbits found that the latter lost a substantial amount of DNA loci, and some specimens lost 88% of their genetic variability. There was, however, one locus whose variability was higher than that of the wild population.[46]

The IUCN/SSC Lagomorph Specialist Group has created an action plan for this rabbit that focuses upon the need to manage the burning and overgrazing of its Zacatón habitats and to enforce laws prohibiting its hunting, capture, and sale. Studies about the volcano rabbit's geographical range, role in its habitat, population dynamics, and evolutionary history have been recommended.[19] The IUCN currently lists the volcano rabbit as an endangered species,[2] as does the Mexican government through the Secretariat of Environment and Natural Resources.[1]

References

[edit]
  1. ^ a b c d e f g h i j k l m n o Velázquez, Alejandro; Gopar-Merino, Fernando (2018). "Romerolagus diazi (Ferrari-Pérez, 1893) Volcano Rabbit". In Smith, Andrew T.; Johnston, Charlotte H.; Alves, Paulo C.; Hackländer, Klaus (eds.). Lagomorphs: Pikas, Rabbits, and Hares of the World. Baltimore: Johns Hopkins University Press. pp. 114–116. doi:10.1353/book.57193. ISBN 978-1-4214-2341-8. LCCN 2017004268.
  2. ^ a b c d e f g Velázquez, A.; Guerrero, J.A. (2019). "Romerolagus diazi". IUCN Red List of Threatened Species. 2019: e.T19742A45180356. doi:10.2305/IUCN.UK.2019-2.RLTS.T19742A45180356.en. Retrieved April 10, 2025.
  3. ^ "Appendices". CITES. Retrieved January 14, 2022.
  4. ^ "Romerolagus diazi (id=1001120)". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved April 11, 2025.
  5. ^ a b Miller, Gerrit Smith Jr. (1911). "The Volcano rabbit of Mount Iztaccihuad". Proceedings of the Biological Society of Washington. 24: 228–229 – via Biodiversity Heritage Library.
  6. ^ Sánchez Lamego, Miguel A. (1975). "Agustín Díaz, ilustre cartógrafo mexicano" [Agustín Díaz, distinguished Mexican cartographer]. Jistoria Mexicana. 24 (4): 556–565. JSTOR 25135478.
  7. ^ Díaz, Agustín (1893). Catálogo de los objetos que componen el contingente de la Comisión, precedido de algunas notas sobre su organización y trabajos [Catalogue of the items that make up the contingent of the Commission, preceded by some notes about its organization and work] (in Spanish). Xalapa-Enriques: Tipo-grafía de la Comisión Geográfico-Exploradora. No. 42 – via Biodiversity Heritage Library.
  8. ^ a b c d Cervantes, Lorenzo & Hoffmann 1990, p. 1
  9. ^ a b c Hoffmann, R.S.; Smith, A.T. (2005). "Romerolagus diazi". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Baltimore: Johns Hopkins University Press. p. 207. ISBN 978-0-8018-8221-0. OCLC 62265494.
  10. ^ Merriam, Clinton Hart (1896). "Romerolagus nelsoni, a new genus & species of rabbit from Mt. Popocatepetl, Mexico". Proceedings of the Biological Society of Washington. 10: 169–174 – via BioStor.
  11. ^ Rojas Mendoza 1952, pp. 33–34.
  12. ^ a b Cervantes, Lorenzo & Hoffmann 1990, p. 6
  13. ^ Carlos, Montemayor; García Escamilla, Enrique; Rivas Paniagua, Enrique; Silva Galeana, Librado (2009). Diccionario del náhuatl en el español de México [Nahuatl-Mexican Spanish Dictionary] (in Spanish). National Autonomous University of Mexico. ISBN 9789703247936.
  14. ^ "Romerolagus Merriam 1896 (volcano rabbit)". Paleobiology Database. Retrieved April 10, 2025.
  15. ^ a b c d López-Cuamatzi, Issachar Leonardo; Ortega, Jorge; Baeza, J. Antonio (February 1, 2022). "The complete mitochondrial genome of the 'Zacatuche' volcano rabbit (Romerolagus diazi), an endemic and endangered species from the Volcanic Belt of Central Mexico". Molecular Biology Reports. 49 (2): 1141–1149. doi:10.1007/s11033-021-06940-7. ISSN 1573-4978.
  16. ^ Osuna, Felipe; González, Dolores; de los Monteros, Alejandro Espinosa; Guerrero, José Antonio (December 1, 2020). "Phylogeography of the volcano rabbit (Romerolagus diazi): the evolutionary history of a mountain specialist molded by the climatic-volcanism interaction in the Central Mexican highlands". Journal of Mammalian Evolution. 27 (4): 745–757. doi:10.1007/s10914-019-09493-6. ISSN 1573-7055.
  17. ^ a b Iraçabal, Leandro; Barbosa, Matheus R.; Selvatti, Alexandre Pedro; Russo, Claudia Augusta de Moraes (2024). "Molecular time estimates for the Lagomorpha diversification". PLOS ONE. 19 (9): e0307380. doi:10.1371/journal.pone.0307380. ISSN 1932-6203. PMC 11379240. PMID 39241029.
  18. ^ a b c Álvarez-Castañeda, Sergio Ticul (2024), "Order Lagomorpha", Mammals of North America - Volume 1, Cham: Springer Nature Switzerland, p. 533, doi:10.1007/978-3-031-41661-3_8, ISBN 978-3-031-41660-6, retrieved February 24, 2025
  19. ^ a b c d e f Fa, J.E.; F.J. Romero; J. Lopez-Paniagua (1992). "Habitat use by parapatric rabbits in a Mexican high-altitude grassland system". Journal of Applied Ecology. 29 (2): 357–370. Bibcode:1992JApEc..29..357F. doi:10.2307/2404505. JSTOR 2404505.
  20. ^ Rojas Mendoza 1952, p. 51.
  21. ^ a b Chapman, Joseph A.; Flux, John E. C. (1990). Rabbits, Hares, and Pikas: Status Survey and Conservation Action Plan. Gland, Switzerland: International Union for the Conservation of Nature. ISBN 2831700191.
  22. ^ a b c d e f Pintus, Kathryn; Bourne, Debra. "Romerolagus diazi - Volcano rabbit". Wildpro. Twycross Zoo. Archived from the original on July 16, 2019. Retrieved March 17, 2025.
  23. ^ Cervantes, Lorenzo & Hoffmann 1990, p. 2
  24. ^ a b Rojas Mendoza 1952, pp. 39–40.
  25. ^ Rojas Mendoza 1952, p. 39.
  26. ^ Rojas Mendoza 1952, p. 40.
  27. ^ Suzuki, S; Mohri, S; Nishida, T; Nishinakagawa, H; Otsuka, J (1989). "Fine structure of the mandibular gland in volcano rabbit". Jikken Dobutsu Experimental Animals. 38 (1): 1–9. doi:10.1538/expanim1978.38.1_1. PMID 2714372.
  28. ^ a b c d e Velazquez, Alejandro; Heil, Gerrit W. (1996). "Habitat suitability study for the conservation of the volcano rabbit (Romerolagus diazi)". Journal of Applied Ecology. 33 (3): 543–554. Bibcode:1996JApEc..33..543V. doi:10.2307/2404983. JSTOR 2404983.
  29. ^ a b Velazquez, Alejandro (1994). "Distribution and population size of Romerolagus diazi on El Pelado Volcano, Mexico". Journal of Mammalogy. 75 (3): 743–749. doi:10.2307/1382525. JSTOR 1382525.
  30. ^ a b c d e Hoth, J.; Velazquez, A.; Romero, F. J.; Leon, L.; Aranda, M.; Bell, D. J. (1987). "The volcano rabbit—a shrinking distribution and a threatened habitat". Oryx. 21 (2): 85–91. doi:10.1017/S0030605300026600. ISSN 0030-6053.
  31. ^ a b c Hoth, J. (2015). "A ciegas entre reyes tuertos: comentarios a la conservación de suelo y ecosistemas templados en México". YouTube. Año Internacional del suelo. 5a Semana de la Diversidad Biológica de CONABIO (in Spanish).
  32. ^ Velazquez, Alejandro (1993). "Man-made and ecological habitat fragmentation – study case of the volcano rabbit (Romerolagus diazi)" (PDF). Journal of Mammalian Biology. 58 (1): 54–61. ISSN 0044-3468.
  33. ^ Anderson, B. J.; Akcakaya, H. R.; Araujo, M. B.; Fordham, D. A.; Martinez-Meyer, E.; Thuiller, W.; Brook, B. W. (2009). "Dynamics of range margins for metapopulations under climate change". Proceedings of the Royal Society B: Biological Sciences. 276 (1661): 1415–1420. doi:10.1098/rspb.2008.1681. PMC 2677226. PMID 19324811.
  34. ^ "Volcano rabbit declared extinct due to lost habitat". Mexico News Daily. September 29, 2018. Retrieved September 30, 2018.
  35. ^ a b Hoth, Jürgen; Granados, Humberto (1987). "A preliminary report on the breeding of the Volcano rabbit Romerolagus diazi at the Chapultepec Zoo, Mexico City". International Zoo Yearbook. 26 (1): 261–265. doi:10.1111/j.1748-1090.1987.tb03169.x. ISSN 0074-9664.
  36. ^ Secretaría de Medio Ambiente y Recursos Naturales (September 28, 2018). "El teporingo no está extinto! Cuidémoslo" [The volcano rabbit is not extinct! Let's look after it]. Gobierno de México (in Spanish). Retrieved September 30, 2018.
  37. ^ a b c Cervantes, Lorenzo & Hoffmann 1990, p. 4
  38. ^ Beever, Erik A.; French, Johnnie (2018). "Sylvilagus nuttallii (Bachman, 1837) Mountain cottontail". In Smith, Andrew T.; Johnston, Charlotte H.; Alves, Paulo C.; Hackländer, Klaus (eds.). Lagomorphs: Pikas, Rabbits, and Hares of the World. Baltimore: Johns Hopkins University Press. pp. 147–149. doi:10.1353/book.57193. ISBN 978-1-4214-2341-8. LCCN 2017004268.
  39. ^ Harris, Stephen; Yalden, Derek (2008). Mammals of the British Isles (4th Revised ed.). Mammal Society. p. 202. ISBN 978-0-906282-65-6.
  40. ^ a b c Martínez-García, J. A.; Mendoza-Martínez, G. N. D.; Alcantara-Carbajal, J. L.; Tarango-Arámbula, L. A.; Sánchez-Torres-Esqueda, T.; Rodríguez-De Lara, R.; Hernández-García, P. A. (2012). "Composición de la dieta y capacidad nutricional de carga del hábitat del conejo de los volcanes (Romerolagus diazi) en México". Revista Chapingo Serie Ciencias Forestales y del Ambiente. XVIII (3): 423–434. doi:10.5154/r.rchscfa.2010.08.063.
  41. ^ Matsuzaki, T; Kamiya, M; Suzuki, H (1985). "Gestation period of the laboratory reared volcano rabbit (Romerolagus diazi)". Jikken Dobutsu (Experimental Animals). 34 (1): 63–6. doi:10.1538/expanim1978.34.1_63. PMID 3987823.
  42. ^ Heldstab, Sandra A. (December 1, 2021). "Habitat characteristics and life history explain reproductive seasonality in lagomorphs". Mammalian Biology. 101 (6): 739–757. doi:10.1007/s42991-021-00127-0. ISSN 1618-1476.
  43. ^ Cervantes, Lorenzo & Hoffmann 1990, p. 5
  44. ^ a b Velazquez, A.; Cervantes, F.A.; Galindo-Leal, C. (1993). "The volcano rabbit Romerolagus diazi, a peculiar lagomorph" (PDF). Lutra. 36: 62–69. Retrieved October 23, 2013.
  45. ^ "Interpretation". Appendices I, II and III of CITES. Convention on International Trade in Endangered Species of Wild Fauna and Flora. 1973.
  46. ^ Soto, Salomon; Victor Manuel; Contreras Montiel; Jose Luis; Matzumura; Pablo Damian; Vasquez Pelaez; Carlos Gustavo (2005). "Assessment of the genetic variability in the captive population of Volcano Rabbit (Romerolagus diazi)". Veterinaria Mexico. 36 (2): 119–126.

Bibliography

[edit]
[edit]
Wikispecies has information related to Romerolagus diazi.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Volcano_rabbit&oldid=1286189734"