Animalia > Chordata > Mammalia > Rodentia > Sciuridae > Tamiasciurus > Tamiasciurus mearnsi

Tamiasciurus mearnsi (Mearns's squirrel)

Wikipedia Abstract

Mearns's squirrel (Tamiasciurus mearnsi) is a species of rodent in the family Sciuridae. It is endemic to pine and fir forests at altitudes of 2,100–2,400 metres (6,900–7,900 ft) in central Baja California in Mexico. This endangered species occurs in low densities and is threatened by habitat loss. It is possibly also threatened by competition from the eastern gray squirrel, which was introduced to the range of Mearns's squirrel in 1946, but may not be present anymore. Mearns's squirrel is closely related to the Douglas squirrel, but far less is known about its behavior, which was first studied in detail in 2004-2005.
View Wikipedia Record: Tamiasciurus mearnsi

Endangered Species

Status: Endangered
View IUCN Record: Tamiasciurus mearnsi

EDGE Analysis

Uniqueness Scale: Similiar (0) 
3
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
52
 Unique & Vulnerable (100)
ED Score: 6.54
EDGE Score: 4.1
Learn more at EDGE of Existence programme

Attributes

Adult Weight [1]  272 grams
Birth Weight [2]  5 grams
Diet [3]  Carnivore (Vertebrates), Frugivore, Nectarivore, Granivore, Herbivore
Diet - Endothermic [3]  20 %
Diet - Fruit [3]  20 %
Diet - Nectar [3]  10 %
Diet - Plants [3]  20 %
Diet - Seeds [3]  20 %
Diet - Vertibrates [3]  10 %
Forages - Arboreal [3]  100 %
Female Maturity [2]  4 months 11 days
Gestation [2]  39 days
Litter Size [2]  5
Litters / Year [2]  2
Maximum Longevity [2]  5 years
Snout to Vent Length [2]  9 inches (23 cm)

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Sonoran desert Mexico, United States Nearctic Deserts and Xeric Shrublands

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Parque Nacional de Sierra San Pedro Martir National Park II 180607 Baja California, Mexico  

Alliance for Zero Extinction (AZE) Sites

Name  Location   Map   Climate   Land Use 
Sierra de San Pedro Mártir Mexico

Prey / Diet

Cryptoporus volvatus[1]
Pinus jeffreyi (Jeffrey's pine)[1]
Pinus lambertiana (Sugar pine)[1]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Sphyrapicus thyroideus (Williamson's Sapsucker)1

Range Map

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Leaflet | © OpenStreetMap contributors

External References

Citations

Attributes / relations provided by
♦ 1ECOLOGY OF THE ENDEMIC MEARNS’S SQUIRREL (TAMIASCIURUS MEARNSI) IN BAJA CALIFORNIA, MEXICO, Nicolas Ramos-Lara, Dissertation, UNIVERSITY OF ARIZONA (2012)
♦ 2Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
AZE sites provided by Alliance for Zero Extinction (2010). 2010 AZE Update.
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0