| 词条 | Long-tailed spiny rat |
| 释义 |
| name = Long-tailed spiny rat | status = LC | status_system = IUCN3.1 | status_ref = [1] | display_parents = 3 | genus = Proechimys | species = longicaudatus | authority = (Rengger, 1830) }} The long-tailed spiny rat, Proechimys longicaudatus, is a spiny rat species from South America.[2] It is found in Bolivia, Brazil and Paraguay. DescriptionThe long-tailed spiny rat is a large rat with a head-and-body length of between {{convert|187|and|250|mm|in|1|abbr=on}} and a tail length of {{convert|121|to|200|mm|in|1|abbr=on}}. The fur is less bristly than in other related species. The upper parts are a glossy chestnut colour becoming more orange on the flanks. The underparts are white, and there is a clear line separating upper and lower parts. The tail is chestnut above and pale below.[3] The tails are missing on some individuals,[4] reflecting the lizard-like ability of many echimyids to detach their tails when attacked by predators. Distribution and habitatThis species has a range in South America extending from southern Bolivia and northern Paraguay to western and central Brazil. It is terrestrial and inhabits dry primary and secondary forest, as well as cerrado and habitats with cleared areas and patches of forest. It usually occurs at altitudes below {{convert|500|m|ft|-2|abbr=on}} but has been recorded up to about {{convert|1000|m|ft|-2|abbr=on}}.[1] EcologyA study was undertaken in Bolivia to establish which small rodents were reservoir hosts for Leishmania, the causal agent for the human disease leishmaniasis. It was found that Oryzomys nitida and Oryzomys acritus were often implicated but that P. longicaudatus did not harbour the infection.[4] PhylogenyMorphological characters and mitochondrial cytochrome b DNA sequences showed that P. longicaudatus belongs to the so-called longicaudatus group of Proechimys species, and shares closer phylogenetic affinities with the other members of this clade: P. brevicauda and P. cuvieri.[5][6][7] {{cladogram|title=Species-level cladogram of the genus Proechimys. |caption=The cladogram has been reconstructed from morphological characters and mitochondrial DNA (cytochrome b) sequences.[5][6][8][7] |align=center |clades={{Cladogram of Proechimys species}} }} StatusThe long-tailed spiny rat is a common and adaptable species, being able to tolerate some degree of habitat modification. The dry forests in this part of South America are being cleared for agricultural purposes and it is thought the population trend of this rat is downwards. However, it has a wide range, and a presumed large total population, and the rate of decline is slow, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern".[1] References1. ^1 2 {{IUCN2008|assessor=Patton, J.|assessor2=Costa, P.|assessor3=Dunnum, J.|assessor4=Vargas, J.|assessor5=Bernal, N.|assessor6=Patterson, B.|year=2008|id=18289|title=Proechimys longicaudatus|downloaded=1 August 2016}} {{Echimyidae nav}}{{Taxonbar|from=Q1769391}}2. ^{{MSW3 Hystricognathi | id = 13400496 | page = 1586 | heading = Species Proechimys longicaudatus}} 3. ^{{cite book|author1=Eisenberg, John F.|author2=Redford, Kent H.|title=Mammals of the Neotropics, Volume 2: The Southern Cone: Chile, Argentina, Uruguay, Paraguay|url=https://books.google.com/books?id=HGYaHxXVmegC&pg=PA388 |year=1992 |publisher=University of Chicago Press|isbn=978-0-226-70682-5 |page=388}} 4. ^1 {{cite journal |author=Kerr, Sara F. |author2=Emmons, Louise H |author3=Melby, Peter C. |author4=Liu, Chang |author5=Perez, Luis E. |author6=Villegas, Maria |author7=Miranda, Robert |year=2006 |title=Leishmania amazonensis infections in Oryzomys acritus and Oryzomys nitida from Bolivia |journal=The American Journal of Tropical Medicine and Hygiene |volume=75 |issue=6 |pages=1069–1073 |url=http://www.ajtmh.org/content/75/6/1069.full }} 5. ^1 {{Cite journal | last=Patton | first=James L. | author-link=James L. Patton | date=1987 | title=Species groups of spiny rats, genus Proechimys (Rodentia: Echimyidae) | pages=305–345 | url=https://www.biodiversitylibrary.org/part/9267 | journal=Fieldiana: Zoology, Studies in neotropical mammalogy: essays in honor of Philip Hershkovitz | language=English | volume=39 | issn=0015-0754}} 6. ^1 {{Cite journal | last=Da Silva | first=Maria Nazareth F. | author-link=Maria Nazareth F. da Silva | date=1998 | title=Four New species of spiny rats of the genus Proechimys (Rodentia : Echimyidae) from the Western Amazon of Brazil | url=http://biostor.org/reference/81093 | journal=Proceedings of the Biological Society of Washington | language=en | volume=111 | pages=436–471 | issn=0006-324X}} 7. ^1 {{Cite book | last=Patton | first=James L. | author-link=James L. Patton | last2=Leite | first2=Rafael N. | chapter=Genus Proechimys J. A. Allen, 1899 | pages=975–977 | title=Mammals of South America, Volume 2: Rodents | editor-last=Patton | editor-first=James L. | editor-last2=Pardiñas | editor-first2=Ulyses F. J. | editor-last3=D’Elía | editor-first3=Guillermo | date=2015-03-09 | publisher=University of Chicago Press | isbn=978-0-226-16957-6 | language=en | url= https://books.google.com/books?id=mbjnBgAAQBAJ&pg=PA975| oclc= 921432000}} 8. ^{{Cite journal | last=Patton | first=James L. | author-link=James L. Patton | last2=Da Silva | first2=Maria Nazareth F. | author-link2=Maria Nazareth F. da Silva | last3=Malcolm | first3=Jay R. | date=2000-01-01 | title=Mammals of the Rio Juruá and the evolutionary and ecological diversification of Amazonia | url=http://www.bioone.org/doi/abs/10.1206/0003-0090%282000%29244%3C0001%3AMOTRJA%3E2.0.CO%3B2 | journal=Bulletin of the American Museum of Natural History | pages=1–306 | doi=10.1206/0003-0090(2000)2442.0.CO;2 | issn=0003-0090}} 8 : Proechimys|Mammals of Bolivia|Mammals of Brazil|Mammals of Peru|Mammals of Paraguay|Rodents of South America|Mammals described in 1830|Taxa named by Johann Rudolph Rengger |
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