scholarly journals Targeted gene flow and rapid adaptation in an endangered marsupial

2018 ◽  
Vol 33 (1) ◽  
pp. 112-121 ◽  
Author(s):  
Ella Kelly ◽  
Ben L. Phillips
Keyword(s):  
Gene Flow ◽  
Rapid Adaptation

scholarly journals Rapid, ultra-local adaptation facilitated by phenotypic plasticity

2019 ◽  
Author(s):  
Syuan-Jyun Sun ◽  
Andrew M. Catherall ◽  
Sonia Pascoal ◽  
Benjamin J. M. Jarrett ◽  
Sara E. Miller ◽  
...  
Keyword(s):  
Gene Flow ◽  
Rapid Evolution ◽  
Reaction Norm ◽  
Ancestral Population ◽  
Adaptive Divergence ◽  
Wild Populations ◽  
Rapid Adaptation ◽  
Burying Beetles ◽  
Genetic Accommodation ◽  
Nicrophorus Vespilloides

AbstractModels of ‘plasticity-first’ evolution are attractive because they explain the rapid evolution of new complex adaptations. Nevertheless, it is unclear whether plasticity can still facilitate rapid evolution when diverging populations are connected by gene flow. Here we show how plasticity has generated adaptive divergence in fecundity in wild populations of burying beetlesNicrophorus vespilloides, which are still connected by gene flow, which occupy distinct Cambridgeshire woodlands that are just 2.5km apart and which diverged from a common ancestral population c. 1000-4000 years ago. We show that adaptive divergence is duetothe coupling of an evolved increase in the elevation of the reaction norm linking clutch size to carrion size (i.e. genetic accommodation) with plastic secondary elimination of surplus offspring. Working in combination, these two processes have facilitated rapid adaptation to fine-scale environmental differences, despite ongoing gene flow.

scholarly journals Strong gene flow and lack of stable population structure in the face of rapid adaptation to local temperature in a spring-spawning salmonid, the European grayling (Thymallus thymallus)

Heredity ◽  
2011 ◽  
Vol 106 (3) ◽  
pp. 460-471 ◽  
Author(s):  
C Junge ◽  
L A Vøllestad ◽  
N J Barson ◽  
T O Haugen ◽  
J Otero ◽  
...  
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Local Temperature ◽  
Stable Population ◽  
Rapid Adaptation ◽  
Thymallus Thymallus ◽  
European Grayling ◽  
The Face

scholarly journals Rapid adaptation with gene flow via a reservoir of chromosomal inversion variation?

2017 ◽  
Author(s):  
Qixin He ◽  
L. Lacey Knowles
Keyword(s):  
Gene Flow ◽  
Environmental Changes ◽  
Point Mutations ◽  
Secondary Contact ◽  
Adaptive Divergence ◽  
Clear Understanding ◽  
Rapid Adaptation ◽  
Chromosomal Inversions ◽  
Divergence With Gene Flow ◽  
New Mutations

AbstractThe increased recognition of frequent divergence with gene flow has renewed interest in chromosomal inversions as a source for promoting adaptive divergence. Inversions can suppress recombination between heterokaryotypes so that local adapted inversions will be protected from introgression with the migrants. However, we do not have a clear understanding of the conditions for which adaptive divergence is more or less likely to be promoted by inversions when the availability of inversion variation is considered. Standing genetic variation, as opposed to new mutations, could offer a quick way to respond to sudden environmental changes, making it a likely avenue for rapid adaptation. For a scenario of secondary contact between locally-adapted populations, we might intuit that standing inversion variation would predominate over new inversion mutations in maintaining local divergence. Our results show that this is not always the case. Maladaptive gene flow, as both a demographic parameter and the cause for selection that favors locally-adapted inversions, differentiates the dynamics of standing inversion variation from that of segregating point mutations. Counterintuitively, in general, standing inversion variation will be less important to the adaptation than new inversions under the demographic and genetic conditions that are more conducive to adaptive divergence via inversions.

Rapid adaptation to right-left reversal of the visual field

1965 ◽  
Author(s):  
Charles S. Harris ◽  
Judith R. Harris
Keyword(s):  
Visual Field ◽  
Rapid Adaptation

Great Wall blocks gene flow

Nature ◽  
2003 ◽  
Author(s):  
HelenR. Pilcher
Keyword(s):  
Gene Flow ◽  
Great Wall

Differentiation and Interrelations of Two Representatives of Laudakia stellio Complex (Reptilia: Agamidae) in Israel

2011 ◽  
Vol 4 (2) ◽  
pp. 102-114 ◽  
Author(s):  
Evgenyi N. Panov ◽  
Larissa Yu. Zykova
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Habitat Preference ◽  
Additional Data ◽  
Near East ◽  
Field Studies ◽  
Subspecies Level ◽  
Limited Gene Flow ◽  
Study Sites ◽  
And Behavior

Field studies were conducted in Central Negev within the breeding range of Laudakia stellio brachydactyla and in NE Israel (Qyriat Shemona) in the range of an unnamed form (tentatively “Near-East Rock Agama”), during March – May 1996. Additional data have been collected in Jerusalem at a distance of ca. 110 km from the first and about 170 km from the second study sites. A total of 63 individuals were caught and examined. The animals were marked and their subsequent movements were followed. Social and signal behavior of both forms were described and compared. Lizards from Negev and Qyriat Shemona differ from each other sharply in external morphology, habitat preference, population structure, and behavior. The differences obviously exceed the subspecies level. At the same time, the lizards from Jerusalem tend to be intermediate morphologically between those from both above-named localities, which permits admitting the existence of a limited gene flow between lizard populations of Negev and northern Israel. The lizards from NE Israel apparently do not belong to the nominate subspecies of L. stellio and should be regarded as one more subspecies within the species.

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