Balaenoptera musculus, the blue whale, is the largest animal known to have ever existed. Its genome sequencing aids in understanding marine mammal biology, longevity, and resistance to cancer. 10.1093/molbev/msae036 (Feb 20, 2024) Authors: Berta Poch Ordoñez, Cynthia Ramírez Arias, Daniel Robledillo Manotas, Gracia del Pilar Sánchez López
Class: Mammalia
Western gorilla
Western gorilla (Gorilla gorilla) is a species of primate in the family Hominidae (great apes). The reference sequence is from the fibroblast of a male and mature gorilla. The size of the genome is of 3500 Mb, the number of coding genes are 22365 and they have 24 chromosomes. The article where the genome of…
Jico Deer Mouse
Jico Deer Mouse (Habromys simulatus) is listed as Critically Endangered because it is known from only two subpopulations: one is likely now extinct, and the other has extremely low population numbers (less than or equal to 50). Most of the mature individuals from are in one subpopulation. If more habitat continues to disappear, this species…
Cozumel Harvest Mouse
Cozumel Harvest Mouse (Reithrodontomys spectabilis) is assessed as Critically Endangered because this species is known only from Cozumel Island, Mexico where it is estimated to exist in small subpopulations (< 50 individuals/subpopulation) with an estimate of less than 200 individuals in the entire population. The species has not recovered from negative impacts from introduced species…
Giant Kangaroo Rat
Giant Kangaroo Rat (Dipodomys ingens) is listed as Endangered because its area of occupancy (AOO) is less than 5,000 km², its population is severely fragmented, and there is an ongoing decline in the extent of occurrence (EOO), AOO, and extent and quality of its habitat. Available at: https://www.iucnredlist.org/species/6678/220892537
Darwin’s Fox
Darwin’s Fox (Lycalopex fulvipes) was previously classified in 2004 and 2008 as Critically Endangered based on an estimated population size of “less than 250 mature individuals with at least 90% of the population occurring in one subpopulation” (Chiloé Island) (Jiménez and McMahon 2004). New distribution information (Vila et al. 2004, D’Elia et al. 2013, Farías et…
Vancouver Island Marmot
Vancouver Island Marmot (Marmota vancouverensis) is listed as Critically Endangered because in 2016 it was estimated that there were between 90-130 individuals occurring in two subpopulations in the wild. Its area of occupancy is less than 10 km², and there has been extensive clear cutting of its forest habitat. A population reduction of greater than…
Pied Tamarin
Pied Tamarin (Saguinus bicolor) is considered Critically Endangered due to a projected population reduction of 80% or more in the next 18 years (three generations) due to serious multiple threats suffered within a very concentrated range in and around the city of Manaus: deforestation and habitat fragmentation related to expanding rural settlements and agriculture, livestock…
Guanaco
Guanaco (Lama guanicoe) is considered to be of Least Concern based upon its wide continental distribution (around one million km2), its presumed total population size (around one million adults), and the presence of numerous protected areas across its range of distribution (56 protected areas covering around 146,000 km2). However, Guanaco actual conservation measures continue to…
Reindeer
Reindeer (Rangifer tarandus) is categorized as Vulnerable A2a due to an observed 40% decline over three generations (about 21-27 years) across the circum-Arctic countries, when Rangifer declined from about 4,800,000 to 2,890,410 individuals. Uncertainty is high about the extent of the decline and the under-lying mechanisms except at a general level. Extent and causes of…