Human-aided and natural dispersal drive gene flow across the range of an invasive mosquito

2014 ◽  
Vol 24 (2) ◽  
pp. 284-295 ◽  
Author(s):  
Kim A. Medley ◽  
David G. Jenkins ◽  
Eric A. Hoffman
Keyword(s):  
Gene Flow ◽  
Invasive Mosquito ◽  
Drive Gene ◽  
Natural Dispersal

scholarly journals Mediterranean scrubland and elevation drive gene flow of a Mediterranean carnivore, the Egyptian mongooseHerpestes ichneumon(Herpestidae)

2016 ◽  
Author(s):  
Tânia Barros ◽  
Samuel A. Cushman ◽  
João Carvalho ◽  
Carlos Fonseca
Keyword(s):  
Gene Flow ◽  
Drive Gene ◽  
Mediterranean Scrubland

scholarly journals Coevolving Plasmids Drive Gene Flow and Genome Plasticity in Host-Associated Intracellular Bacteria

2020 ◽  
Author(s):  
Stephan Köstlbacher ◽  
Astrid Collingro ◽  
Tamara Halter ◽  
Daryl Domman ◽  
Matthias Horn
Keyword(s):  
Gene Flow ◽  
Intracellular Bacteria ◽  
Genome Plasticity ◽  
Drive Gene

Pollen- and Seed-Mediated Gene Flow in Kochia (Kochia scoparia)

Weed Science ◽  
2016 ◽  
Vol 64 (4) ◽  
pp. 624-633 ◽  
Author(s):  
Hugh J. Beckie ◽  
Robert E. Blackshaw ◽  
Linda M. Hall ◽  
Eric N. Johnson
Keyword(s):  
Gene Flow ◽  
Acetolactate Synthase ◽  
Western Canada ◽  
Kochia Scoparia ◽  
Hub And Spoke ◽  
Herbicide Resistant ◽  
Prevailing Wind Direction ◽  
Seed Mediated ◽  
Als Inhibitor ◽  
Natural Dispersal

Efficient natural dispersal of herbicide-resistance alleles via seed and pollen can markedly accelerate the incidence of herbicide-resistant weed populations across an agroecoregion. Studies were conducted in western Canada in 2014 and 2015 to investigate pollen- and seed-mediated gene flow in kochia. Pollen-mediated gene flow (PMGF) from glyphosate-resistant (GR) to non-GR kochia was quantified in a field trial (hub and spoke design) at Saskatoon, Saskatchewan. Seed-mediated gene flow of acetolactate synthase (ALS) inhibitor-resistant kochia as a function of tumbleweed speed and distance was estimated in cereal stubble fields at Lethbridge, Alberta and Scott, Saskatchewan. Regression analysis indicated that outcrossing from GR to adjacent non-GR kochia ranged from 5.3 to 7.5%, declining exponentially to 0.1 to 0.4% at 96 m distance. However, PMGF was significantly influenced by prevailing wind direction during pollination (maximum of 11 to 17% outcrossing down-wind). Seed dropped by tumbleweeds varied with distance and plant speed, approaching 90% or more (ca. 100,000 seeds or more) at distances of up to 1,000 m and plant speeds of up to 300 cm s–1. This study highlights the efficient proximal (pollen) and distal (seed) gene movement of this important GR weed.

scholarly journals Beekeeping practices and geographic distance, not land use, drive gene flow across tropical bees

2016 ◽  
Vol 25 (21) ◽  
pp. 5345-5358 ◽  
Author(s):  
Rodolfo Jaffé ◽  
Nathaniel Pope ◽  
André L. Acosta ◽  
Denise A. Alves ◽  
Maria C. Arias ◽  
...  
Keyword(s):  
Land Use ◽  
Gene Flow ◽  
Geographic Distance ◽  
Drive Gene

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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