Postglacial loss of microsatellite variation in the landlocked Lake Saimaa ringed seal

@article{Palo2004PostglacialLO,
  title={Postglacial loss of microsatellite variation in the landlocked Lake Saimaa ringed seal},
  author={Jukka Palo and Heikki Hyv{\"a}rinen and Eero Helle and Hannu M{\"a}kinen and Risto V{\"a}in{\"o}l{\"a}},
  journal={Conservation Genetics},
  year={2004},
  volume={4},
  pages={117-128}
}
The Lake Saimaa ringed sealPhoca hispida saimensis has lived as anisolated landlocked population in easternFinland since the early post-glacial. In thelast century, the population crashed down to c.200 individuals, and is under a constant threatof extinction. We evaluated the genetic historyof the Saimaa population through a comparisonwith the conspecific sister populations in theArctic Ocean and the Baltic Sea, which haveretained high levels of variation since thedeglaciation. At eight… 
Demographic histories and genetic diversities of Fennoscandian marine and landlocked ringed seal subspecies
TLDR
Using Approximate Bayesian computing analyses, it is shown that the genetic uniformity of the Saimaa subspecies derives from an extended founder event and subsequent slow erosion, rather than from the recent bottleneck, suggesting that the population has persisted for nearly 10,000 years despite having low genetic variation.
Spatial and temporal variation in genetic diversity of an endangered freshwater seal
TLDR
This study strongly suggests that enhancing gene flow and population growth is crucial for maintaining the remaining genetic diversity of the Saimaa ringed seal.
Holocene environmental changes and the seal (Phocidae) fauna of the Baltic Sea: coming, going and staying
The occurrence of different species of seal (Phocidae) during the Holocene in north-eastern Europe was influenced by a changing geological situation over the last 12 000 years, charac- terized by
Intestinal helminths of a landlocked ringed seal (Phoca hispida saimensis) population in eastern Finland
TLDR
Variation in the number of worms in individual seals may indicate differences in feeding behaviour and in the diet of seals, and/or variation in the immune status of the seals.
Causes and consequences of fine-scale population structure in a critically endangered freshwater seal Valtonen, Mia
TLDR
The fine-scale differentiation found in the landlocked Saimaa ringed seal is especially surprising when contrasted with marine ringed seals, which often exhibit near-panmixia among subpopulations separated by hundreds or even thousands of kilometres.
Causes and consequences of fine-scale population structure in a critically endangered freshwater seal
TLDR
The results demonstrate that population structures of endangered animals cannot be predicted based on data on even closely related species or subspecies, and genetic structuring in the population appears to arise from the joint effects of multiple factors, including small effective subpopulation sizes, a fragmented lacustrine habitat, and behavioural dispersal limitation.
Evolutionary history of a Scottish harbour seal population
TLDR
Estimates of current genetic diversity and effective population size were low, but the results indicated that this population has remained at broadly similar levels following the population bottleneck that occurred after post-glacial recolonization of the area.
The endangered Saimaa ringed seal in a changing climate : challenges for conservation and monitoring
The ringed seal (Phoca hispida) is heavily ice-associated and its breeding success depends on sufficient ice and snow cover. Thus, the loss of snow and ice caused by the ongoing climate change pose a
Long-term persistence and evolutionary divergence of a marine fish population with a very small effective population size (Kildin cod Gadus morhua kildinensis)
TLDR
It is hypothesize that Kildin cod has experienced founder-flush dynamics that lead to loss of genetic variation during the founder phase(s) and purging of genetic load and the rise of adaptation during flush phase (s).
Present-Day Genetic Structure of Atlantic Salmon (Salmo salar) in Icelandic Rivers and Ice-Cap Retreat Models
TLDR
The estimated time of divergence suggested that the observed genetic pattern originated from between the Last Glacial Maximum to the Younger Dryas, which serves as additional evidence of the relative immaturity of Icelandic fish populations, on account of the re-colonisation of this young environment following the Lastglacial Maximum.
...
1
2
3
4
...

References

SHOWING 1-10 OF 62 REFERENCES
Microsatellite variation in ringed seals (Phoca hispida): genetic structure and history of the Baltic Sea population
TLDR
Genetic variability and population structure of Baltic ringed seals and an Arctic reference population were assessed using eight microsatellite loci, and it is suggested that the recent population decline and split have not yet affected the inbreeding levels of the disjunct breeding stocks.
Estimating the demographic effective population size of the Saimaa ringed seal (Phoca hispida saimensis Nordq.)
TLDR
The most effective way to enhance future prospects of the Saimaa seal population is to improve pup survival to maturity, and a recently developed measure, the demographic effective population size ND, scales population size by taking the differential contribution of individuals into account.
Diverging trends between heterozygosity and allelic richness during postglacial colonization in the European beech.
TLDR
The decrease of allelic richness and the simultaneous increase of H during postglacial recolonization was attributed to several processes that differentially affect the two diversity parameters, such as bottlenecks due to long-distance founding events, selection during population establishment, and increased gene flow at low population densities.
Genetic variation of microsatellite loci in a bottlenecked species: the northern hairy‐nosed wombat Lasiorhinus krefftii
TLDR
The results show that appreciable levels of variation still exist in the Epping Forest colony although it has only 41% of the heterozygosity shown in a population of a closely‐related species, which is consistent with an extremely small effective population size throughout its 120‐year decline.
Microsatellite variation in grey seals (Halichoerus grypus) shows evidence of genetic differentiation between two British breeding colonies
TLDR
Although grey seals are known to range over very large areas outside the breeding season, site fidelity of adults and philopatry of pups for these breeding colonies must be sufficiently common to have effects, through genetic drift, at the sub‐population level.
The early history of seals in the northern Baltic
TLDR
All available data, both from geological stray finds and archaeological refuse faunas, of the early occurrence of seals in the northern Baltic were summarized and identification of seals to species level is - to some extent - possible even from burnt and highly fragmented bone material found at prehistoric dwelling sites in Finland.
Unprecedented Low Levels of Genetic Variation and Inbreeding Depression in an Island Population of the Black‐Footed Rock‐Wallaby
TLDR
Compared levels of genetic variation and fitness in island and mainland populations of the black‐footed rock‐wallaby (Petrogale lateralis) are compared, results indicate that the Barrow Island population of P. lateralis has unprecedented low levels of Genetic variation and suffers from inbreeding depression.
Risk Analysis of Hunting of Seal Populations in the Baltic
Vulnerabilities of grey seal ( Halichoerus grypus) and ringed seal ( Phoca hispida) populations in the Baltic Sea were evaluated for potential opening of the populations for hunting. We used
Impact of population bottlenecks on genetic variation and the importance of life-history; a case study of the northern elephant seal
This paper reviews some of the important factors related to the impact of population bottlenecks, using the northern elephant seal (Mirounga angustirostrus) as a case study for illustration. The
Low genetic variability of the koala Phascolarctos cinereus in south‐eastern Australia following a severe population bottleneck
TLDR
The significantly lower levels of variation between south‐eastern Australian populations suggests that human intervention has had a severe effect on levels of genetic diversity in this region, and this may have long‐term genetic consequences.
...
1
2
3
4
5
...