Topic:Endangered Species

The topic of endangered species and horses explores the intersection of conservation efforts and equine populations that are at risk of extinction. This area of study focuses on identifying horse breeds and wild equine species whose numbers have declined significantly due to factors such as habitat loss, climate change, and human activities. It examines the genetic diversity, population dynamics, and conservation strategies aimed at preserving these at-risk groups. The topic includes research on the ecological roles of these horses, their historical significance, and the challenges involved in their conservation. This page compiles peer-reviewed research studies and scholarly articles that investigate the status, threats, and preservation efforts related to endangered horse species and breeds.

Molecular cytogenetics of the Equidae. I. Purification and cytological localization of a (G + C)-rich satellite DNA from Equus przewalskii.

Chromosoma April 30, 1979 Volume 72, Issue 2 115-129 doi: 10.1007/BF00293229

Ryder OA, Hansen SK.A (G + C)-rich density satellite DNA (rho = 1.713 gm/cc) has been purified from splenic DNA of Przewalski's horse, Equus przewalskii, by successive equilibrium density gradient centrifugations. The purified satellite, which may comprise as much as 29% of the total DNA, renatures rapidly; however, analyses of native, single-stranded, and reassociated molecules by analytical ultracentrifugation and melting properties suggest that some sequence heterogeniety exists in the 1.713 gm/cc satellite. Complementary RNA (cRNA) transcribed from satellite DNA has been utilized for in situ hybridization stu...

Animal blood groups and biochemical genetics January 1, 1979 Volume 10, Issue 1 61-62

Braend M.No abstract available

Cytogenetics and cell genetics January 1, 1974 Volume 13, Issue 5 465-478 doi: 10.1159/000130300

Short RV, Chandley AC, Jones RC, Allen WR.No abstract available

Science (New York, N.Y.) April 16, 1965 Volume 148, Issue 3668 382-383 doi: 10.1126/science.148.3668.382

BENIRSCHKE K, MALOUF N, LOW RJ, HECK H.The chromosome number of the domestic horse is 2n = 64; different races have the same complement. The chromosomes of two Przewalski's horses (at Catskill Game Farm, New York), presumably ancestral wild horses from Mongolia, are identical: 2n = 66, with more acrocentric and fewer metacentric elements than the chromosomes of the domestic horse. This apparent difference in karyotype may help resolve the questions of "purity" in the relatively few remaining Przewalski's horses. Moreover, these findings are of interest in relation to the apparent fertility of hybrids between these species.