Conservation biology: Lone wolf to the rescue

  title={Conservation biology: Lone wolf to the rescue},
  author={P{\"a}r K. Ingvarsson},
Genetic analysis has revealed how a small and isolated population of grey wolves found salvation in the form of the genetic variation offered by a single, immigrant male. 
Genetic Evidence of the Contribution of Ethnic Migrations to the Propagation and Persistence of the Rare and Declining Scrambling Shrub Caesalpinia bonduc L
The results support the hypothesis of human involvement in Caesalpinia dispersal and persistence in Benin, but the low genetic diversity may imply high risks for future extinction and it is recommended that gene flow among the remaining populations be supported in order to conserve the species.
Temporal dynamics of genetic variability in a mountain goat (Oreamnos americanus) population
The temporal decline of individual genetic diversity despite increasing population size probably resulted from a combination of genetic drift due to small effective population size, inbreeding and insufficient counterbalancing by immigration.
Genetic Effects of a Persistent Bottleneck on a Natural Population of Ornate Box Turtles (Terrapene ornata)
To investigate the genetic effects of persistent population bottlenecks on long-lived species, microsatellite markers are used to assess the level of genetic diversity of a small ornate box turtle population that has experienced a persistent bottleneck in the past century, and a large relatively undisturbed population is compared.
A call for tiger management using "reserves" of genetic diversity.
It is demonstrated that maintaining genetic diversity is impossible based on known demographic parameters for the species, and managing for the genetic diversity of the species should be prioritized over the riskier preservation of distinct subspecies.
Two centuries of the Scandinavian wolf population: patterns of genetic variability and migration during an era of dramatic decline
Historical patterns of genetic variability among historical Scandinavian wolves was significantly lower than in Finland while Y chromosome variability was comparable between the two populations, which may suggest that long‐distance migration from the east has been male‐biased.
Regional and local spatial genetic structure of Siberian primrose populations in Northern Europe
Very low genetic and allelic diversity in the Bothnian Bay and Barents Sea populations, and only slightly higher in the White Sea population is found, suggesting efficient dispersal on a local scale.
Population differentiation and gene flow within a metapopulation of a threatened tree, Magnolia stellata (Magnoliaceae).
It is concluded that to conserve M. stellata, it is important to preserve the whole population by maintaining its metapopulation structure and the gene flow among its populations.
Induced dispersal in wildlife management: experimental evaluation of the risk of hybrid breakdown and the benefit of hybrid vigor in the F1 generation
It is suggested that in first generation hybrids there may be limited opportunity to utilize hybrid vigor as a tool to increase the short-term viability of populations because there is an equal likelihood of encountering hybrid breakdown that may drive the population into further decline.
Rodrigues fruit bats (Pteropus rodricensis, Megachiroptera: Pteropodidae) retain genetic diversity despite population declines and founder events
This work uses polymorphic microsatellite loci to assess genetic variability in wild, critically endangered Rodrigues fruit bats (Pteropus rodricensis, Dobson 1878) and compares this variability to that in a captive colony and document remarkable conservation of genetic variability.


Rescue of a severely bottlenecked wolf (Canis lupus) population by a single immigrant
It is shown here that the genetic diversity of the severely bottlenecked and geographically isolated Scandinavian population of grey wolves (Canis lupus), founded by only two individuals, was recovered by the arrival of a single immigrant.
Inbreeding and relatedness in Scandinavian grey wolves Canis lupus.
It is shown here that individual heterozygosity at a set of 29 microsatellite loci correlates closely to the degree of inbreeding in a captive grey wolf population, pointing out an additional risk for the small Swedish wild population.
Conservation biology: Restoration of an inbred adder population
It is shown that the introduction of new genes into a severely inbred and isolated population of adders (Vipera berus) halted its precipitous decline towards extinction and expanded the population dramatically.
Inbreeding Depression in a Captive Wolf (Canis lupus) Population
Different effects of inbreeding can be attributed to genes originating from different founder pairs, thus indicating that alleles that are deleterious in the homozygous state are fairly common in natural wolf populations.
Heterosis increases the effective migration rate
It is shown that the effect of heterosis on the migration rate can be substantial when fitness reduction within local populations is severe and the effect will be more pronounced in species with relatively short map lengths.
Tracking the long-term decline and recovery of an isolated population
Conservation measures initiated in 1992 with translocations of birds from large, genetically diverse populations restored egg viability and sufficient genetic resources appear to be critical for maintaining populations of greater prairie chickens.