Demographic processes and genetic variability of mouse populations at the ecological-geographic periphery

Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
N E Kolcheva

Abstract

On the basis of the results of long-term monitoring, the peculiarities of demographic processes in Sylvaemus uralensis Pall. populations under the peripheral ecological-geographic conditions of the area have been studied. Data of the individual marking and ontogenetic history of animals are presented. Demographic parameters of population, reproduction efficiency, and progeny survival, as well as contributions of various structural groups in the population gene pool were analyzed. The low reproduction activity of the young and the considerable role of the senior age groups in population reproduction were revealed. We have established that changes occur at two structure levels of population: simplification of the age structure and reorganization of the generation structure transformed the genetic information transmission pathways. The transgeneration channel of the transfer of hereditary information is prevailing in pessimum habitats of murine rodents with low reproductive activity of the young stock. In depression years this channel is obligatory and it might cause a reduction in the population genetic heterogeneity.

References

Mar 27, 2002·Nature Neuroscience·Martin GreschnerJosef Ammermüller
Jan 13, 2006·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·A N Milishnikov
Mar 28, 2009·Proceedings. Biological Sciences·Kevin J Gaston
May 9, 2012·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·E B Grigorkina, G V Olenev

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.