scholarly journals Long-term survival and successful conservation? Low genetic diversity but no evidence for reduced reproductive success at the north-westernmost range edge of Poa badensis (Poaceae) in Central Europe

2019 ◽  
Vol 28 (5) ◽  
pp. 1245-1265 ◽  
Author(s):  
Kristina Plenk ◽  
Katharina Bardy ◽  
Maria Höhn ◽  
Matthias Kropf
Keyword(s):  
Genetic Diversity ◽  
Reproductive Success ◽  
Central Europe ◽  
Term Survival ◽  
Long Term Survival ◽  
Range Edge ◽  
The North ◽  
Low Genetic Diversity

Long-term survival despite low genetic diversity in the critically endangered Madagascar fish-eagle

2008 ◽  
Author(s):  
JEFF A. JOHNSON ◽  
RUTH E. TINGAY ◽  
MELANIE CULVER ◽  
FRANK HAILER ◽  
MICHÈLE L. CLARKE ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Critically Endangered ◽  
Term Survival ◽  
Long Term Survival ◽  
Low Genetic Diversity

scholarly journals Genetic variability and conservation of the endangered Pannonian root vole in fragmented habitats of an agricultural landscape

2021 ◽  
Vol 43 ◽  
pp. 167-191
Author(s):  
Krisztina A. Kelemen ◽  
Felicita Urzi ◽  
Elena Buzan ◽  
Győző F. Horváth ◽  
Filip Tulis ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Genetic Variability ◽  
Agricultural Landscape ◽  
Isolation By Distance ◽  
Term Survival ◽  
Long Term Survival ◽  
Root Vole ◽  
Low Genetic Diversity

The distribution of the endangered glacial relict subspecies, the Pannonian root vole Alexandromys oeconomus mehelyi Éhik, 1928, is restricted to scattered localities in south-western Slovakia, which belong to the north-eastern zone of its range. Human-induced changes and fragmentation of the landscape have led to the gradual loss of suitable habitats and threaten its long-term survival. The study area in the Danubian Lowland is characterised by small habitat fragments and temporal fluctuations of the habitat area. Root voles were sampled at nine sites to study the level of genetic variability and structure of local subpopulations by scoring 13 microsatellite loci in 69 individuals. Genetic differentiation varied amongst local populations and we did not find a significant isolation-by-distance pattern. Bayesian clustering analysis suggested that dispersal effectively prevents marked genetic subdivision between studied habitat fragments. Significant pairwise differentiation between some subpopulations, however, may be the result of putatively suppressed gene flow. Low genetic diversity in the recent populations probably reflects the isolated location of the study area in the agricultural landscape, suggesting that long-term survival may not be assured. In order to maintain genetic diversity, it is essential to preserve (or even restore) habitats and ensure the possibility of gene flow; habitat protection is, therefore, recommended. Continuous assessment is necessary for effective conservation management and to predict the long-term survival chances of the Pannonian root vole in the study area.

scholarly journals Genetic Variability and Management in Nero di Parma Swine Breed to Preserve Local Diversity

Animals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 538 ◽  
Author(s):  
Elena Mariani ◽  
Andrea Summer ◽  
Michela Ablondi ◽  
Alberto Sabbioni
Keyword(s):  
Genetic Diversity ◽  
Mean Value ◽  
Breeding Strategies ◽  
Term Survival ◽  
The North ◽  
Local Diversity ◽  
The Mean ◽  
The Individual

Nero di Parma is an endangered swine breed reared in the North of Italy which nowadays counts 1603 alive pigs. The aims of this study were (i) to explore the genetic diversity of the breed at pedigree level to determine the actual genetic structure, (ii) to evaluate the effectiveness of the breeding recovery project and (iii) to potentially propose breeding strategies for the coming generations. The pedigree dataset contained 14,485 animals and was used to estimate demographic and genetic parameters. The mean equivalent complete generations was equal to 6.47 in the whole population, and it reached a mean value of 7.94 in the live animals, highlighting the quality of the available data. Average inbreeding was 0.28 in the total population, whereas it reached 0.31 in the alive animals and it decreased to 0.27 if only breeding animals were considered. The rate of inbreeding based on the individual increase in inbreeding was equal to 7%. This study showed the effectiveness of the recovery project of the breed. Nevertheless, we found that inbreeding and genetic diversity have reached alarming levels, therefore novel breeding strategies must be applied to ensure long-term survival of this breed.

scholarly journals Recent distribution and phytosociological affiliation of Ludwigia palustris in Slovakia

2017 ◽  
Vol 86 (1) ◽  
Author(s):  
Daniel Dítě ◽  
Pavol Eliáš Jr. ◽  
Zuzana Dítě ◽  
Andrea Šimková
Keyword(s):  
Central Europe ◽  
Rare Species ◽  
Catchment Area ◽  
Oxbow Lake ◽  
Historic Site ◽  
Term Survival ◽  
Long Term Survival ◽  
River Catchment

<em>Ludwigia palustris</em> has always been a very rare species in Central Europe. In Slovakia, its occurrence remained unconfirmed for over 60 years and it was therefore considered extinct. The paper reports its rediscovery on two sites in SE Slovakia. Both localities were found in the Latorica River catchment area in 2015 when persistent summer droughts enabled the development of natural mudflat vegetation in the dried oxbows. Confirmation of this historic site indicates the long-term survival ability of the species. We assigned <em>L. palustris</em> dominated vegetation in the class <em>Isoëto-Nanojuncetea</em>, association <em>Ludwigio palustris-Lindernietum procumbentis</em>. This association is new to Slovakia as well as for Central Europe. The stands of this association developed on the exposed muddy shores of disconnected oxbow lake.

scholarly journals Genetic diversity, inbreeding and cancer

2018 ◽  
Vol 285 (1875) ◽  
pp. 20172589 ◽  
Author(s):  
Beata Ujvari ◽  
Marcel Klaassen ◽  
Nynke Raven ◽  
Tracey Russell ◽  
Marion Vittecoq ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Immune Surveillance ◽  
Term Survival ◽  
Low Genetic Diversity ◽  
Increased Risk ◽  
Loss Of Genetic Diversity ◽  
Risk Of Cancer ◽  
The Impact ◽  
Increased Susceptibility

Genetic diversity is essential for adaptive capacities, providing organisms with the potential of successfully responding to intrinsic and extrinsic challenges. Although a clear reciprocal link between genetic diversity and resistance to parasites and pathogens has been established across taxa, the impact of loss of genetic diversity by inbreeding on the emergence and progression of non-communicable diseases, such as cancer, has been overlooked. Here we provide an overview of such associations and show that low genetic diversity and inbreeding associate with an increased risk of cancer in both humans and animals. Cancer being a multifaceted disease, loss of genetic diversity can directly (via accumulation of oncogenic homozygous mutations) and indirectly (via increased susceptibility to oncogenic pathogens) impact abnormal cell emergence and escape of immune surveillance. The observed link between reduced genetic diversity and cancer in wildlife may further imperil the long-term survival of numerous endangered species, highlighting the need to consider the impact of cancer in conservation biology. Finally, the somewhat incongruent data originating from human studies suggest that the association between genetic diversity and cancer development is multifactorial and may be tumour specific. Further studies are therefore crucial in order to elucidate the underpinnings of the interactions between genetic diversity, inbreeding and cancer.

Long-term survival after blood transfusion: a population based study in the North of England

Transfusion ◽  
2004 ◽  
Vol 44 (7) ◽  
pp. 1025-1032 ◽  
Author(s):  
Jonathan P. Wallis ◽  
Angus W. Wells ◽  
John N. Matthews ◽  
Catherine E. Chapman
Keyword(s):  
Blood Transfusion ◽  
Population Based ◽  
Term Survival ◽  
Population Based Study ◽  
Long Term Survival ◽  
The North

scholarly journals Fungus-assisted reintroduction and long-term survival of two Mexican terrestrial orchids in the natural habitat

Lankesteriana ◽  
2015 ◽  
Vol 7 (1-2) ◽  
Author(s):  
Pilar Orega-Larrocea ◽  
Mónica Rangel-Villafranco
Keyword(s):  
Genetic Diversity ◽  
Seed Bank ◽  
Natural Habitat ◽  
Ecological Studies ◽  
Term Survival ◽  
Long Term Survival ◽  
Symbiotic Fungus ◽  
Seed Bank Dynamics ◽  
Terrestrial Orchids

Preservation of genetic diversity of orchids for con- servation and restoration purposes is now a feasible practice after the ecological studies of seed bank dynamics made by several investigators (Batty et al. 2001, Whigham et al. 2006). However, few studies have demonstrated the reliability of reintroduction of several species into their natural habitat and less, managing symbiotic fungus (Ramsay and Dixon 2003, Zettler et al. 2003).

Human thymic epithelial cells maintain long-term survival of clonogenic myeloid and erythroid progenitor cells in vitro

2000 ◽  
Vol 111 (1) ◽  
pp. 363-370 ◽  
Author(s):  
Katsuto Takenaka ◽  
Mine Harada ◽  
Tomoaki Fujisaki ◽  
Koji Nagafuji ◽  
Shinichi Mizuno ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Progenitor Cells ◽  
Thymic Epithelial Cells ◽  
Erythroid Progenitor ◽  
Term Survival ◽  
Long Term Survival ◽  
Erythroid Progenitor Cells

Clinical outcome and long-term survival following radical esophagectomy in the elderly

2001 ◽  
Vol 120 (5) ◽  
pp. A747-A748
Author(s):  
S DRESNER ◽  
A IMMMANUEL ◽  
P LAMB ◽  
S GRIFFIN
Keyword(s):  
Clinical Outcome ◽  
The Elderly ◽  
Radical Esophagectomy ◽  
Term Survival ◽  
Long Term Survival

201: Determinants of Mortality in Men with Prostate Cancer: How Important are Cancer Parameters on Long Term Survival?

2006 ◽  
Vol 175 (4S) ◽  
pp. 65-65
Author(s):  
Ashutosh K. Tewari ◽  
George Divine ◽  
Mani Menon
Keyword(s):  
Prostate Cancer ◽  
Term Survival ◽  
Long Term Survival
Sign in / Sign up

Export Citation Format

Share Document