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forests, they are absent from ranges that do not include the higher-elevation spruce-fir and mixed coniferous forests. Due to the limited range of this habitat, the population of southwestern red squirrels is naturally fragmented and has little gene flow between subpopulations; these populations may
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There is little evidence of demographic-driven expansion in populations of this species, and mountain ranges each have their own highly-divergent clades of species, indicating high separation and little gene flow between populations. If this lack of connectivity is compounded with further
298:) is a notable, endangered subspecies of the southwestern red squirrel. In addition, genetic sampling indicates that squirrels from the Sacramento Mountains of New Mexico form a highly divergent clade that dates back to the
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Hope, Andrew G.; Malaney, Jason L.; Bell, Kayce C.; Salazar-Miralles, Fernando; Chavez, Andreas S.; Barber, Brian R.; Cook, Joseph A. (2016-07-01).
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have been more widespread during the last glaciation, when these forests were more connected. Fossil remains of this species are known from the
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441:"Revision of widespread red squirrels (genus: Tamiasciurus) highlights the complexity of speciation within North American forests"
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283:), but a 2016 study found sufficient phylogenetic evidence indicating it was a distinct species. The
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also appear to be genetically divergent, although this is only based on a single individual.
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of their habitats, the population dynamics of this species could eventually be driven by
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367:, indicating that they likely once had a suitable climate.
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275:It was formerly considered conspecific with the
680:Endemic fauna of the Southwestern United States
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302:, about 130,000 years ago. Squirrels in the
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41:subspecies of southwestern red squirrel
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445:Molecular Phylogenetics and Evolution
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675:Endemic rodents of the United States
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287:accepted the results of this study.
338:. Its range overlaps with that of
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342:in the southern Rocky Mountains.
695:Taxa named by John James Audubon
285:American Society of Mammalogists
263:to high-altitude regions of the
234:Tamiasciurus hudsonicus fremonti
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1:
685:Fauna of the Rocky Mountains
466:10.1016/j.ympev.2016.04.014
721:
700:Taxa named by John Bachman
690:Natural history of Arizona
521:"NatureServe Explorer 2.0"
406:"NatureServe Explorer 2.0"
265:southwestern United States
24:Southwestern red squirrel
705:Mammals described in 1853
386:Mount Graham red squirrel
292:Mount Graham red squirrel
244:southwestern red squirrel
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76:Scientific classification
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525:explorer.natureserve.org
410:explorer.natureserve.org
16:Species of tree squirrel
545:"Tamiasciurus fremonti"
501:www.mammaldiversity.org
334:in both New Mexico and
497:"Explore the Database"
579:Tamiasciurus fremonti
350:They largely inhabit
277:American red squirrel
253:Tamiasciurus fremonti
185:Tamiasciurus fremonti
324:Sacramento Mountains
300:Last Glacial Maximum
457:2016MolPE.100..170H
365:Guadalupe Mountains
314:It ranges from the
304:San Mateo Mountains
48:Conservation status
356:spruce-fir forests
332:Mogollon Mountains
256:) is a species of
248:Fremont's squirrel
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571:Taxon identifiers
296:T. f. grahamensis
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218:T. f. mogollensis
213:T. f. grahamensis
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670:Tamiasciurus
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552:. Retrieved
549:www.utep.edu
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528:. Retrieved
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504:. Retrieved
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413:. Retrieved
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371:Conservation
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318:of southern
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310:Distribution
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154:Tamiasciurus
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39:Mount Graham
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642:NatureServe
616:iNaturalist
451:: 170–182.
378:degradation
205:Subspecies
66:NatureServe
664:Categories
554:2021-09-11
530:2021-09-11
506:2021-09-11
392:References
382:extinction
328:New Mexico
62:Unrankable
647:2.1146767
594:Q89875686
475:1055-7903
415:7 October
322:into the
161:Species:
143:Sciuridae
99:Kingdom:
93:Eukaryota
608:12038888
588:Wikidata
483:27083861
330:and the
320:Colorado
271:Taxonomy
226:Synonyms
139:Family:
133:Rodentia
123:Mammalia
113:Chordata
109:Phylum:
103:Animalia
89:Domain:
634:1001705
453:Bibcode
346:Habitat
336:Arizona
261:endemic
199:, 1853)
197:Bachman
193:Audubon
149:Genus:
129:Order:
119:Class:
64: (
621:900236
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195:&
603:GBIF
479:PMID
471:ISSN
417:2022
354:and
290:The
242:The
629:MDD
461:doi
449:100
326:in
246:or
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
