Host and parasite life history interplay to yield divergent population genetic structures in two ectoparasites living on the same bat species

2015 ◽  
Vol 24 (10) ◽  
pp. 2324-2335 ◽  
Author(s):  
J. van Schaik ◽  
D. Dekeukeleire ◽  
G. Kerth
Keyword(s):  
Life History ◽  
Population Genetic ◽  
Genetic Structures

Two invasive populations of the dry rot fungusSerpula lacrymansshow divergent population genetic structures

2010 ◽  
Vol 19 (4) ◽  
pp. 706-715 ◽  
Author(s):  
INGEBORG BJORVAND ENGH ◽  
TOR CARLSEN ◽  
GLENN-PETER SAETRE ◽  
NILS HÖGBERG ◽  
SHUICHI DOI ◽  
...  
Keyword(s):  
Population Genetic ◽  
Dry Rot ◽  
Genetic Structures

scholarly journals Spatial and ecological population genetic structures within two island‐endemic Aeonium species of different niche width

2015 ◽  
Vol 5 (19) ◽  
pp. 4327-4344 ◽  
Author(s):  
David E. V. Harter ◽  
Mike Thiv ◽  
Alfons Weig ◽  
Anke Jentsch ◽  
Carl Beierkuhnlein
Keyword(s):  
Population Genetic ◽  
Niche Width ◽  
Island Endemic ◽  
Genetic Structures

scholarly journals Geography is more important than life history in the recent diversification of the tiger salamander complex

2021 ◽  
Vol 118 (17) ◽  
pp. e2014719118
Author(s):  
Kathryn M. Everson ◽  
Levi N. Gray ◽  
Angela G. Jones ◽  
Nicolette M. Lawrence ◽  
Mary E. Foley ◽  
...  
Keyword(s):  
Life History ◽  
Gene Flow ◽  
Genetic Differentiation ◽  
Population Genetic ◽  
Tiger Salamander ◽  
Life History Variation ◽  
Mexican Axolotl ◽  
Population Genetic Differentiation ◽  
Wide Range ◽  
Lineage Divergence

The North American tiger salamander species complex, including its best-known species, the Mexican axolotl, has long been a source of biological fascination. The complex exhibits a wide range of variation in developmental life history strategies, including populations and individuals that undergo metamorphosis; those able to forego metamorphosis and retain a larval, aquatic lifestyle (i.e., paedomorphosis); and those that do both. The evolution of a paedomorphic life history state is thought to lead to increased population genetic differentiation and ultimately reproductive isolation and speciation, but the degree to which it has shaped population- and species-level divergence is poorly understood. Using a large multilocus dataset from hundreds of samples across North America, we identified genetic clusters across the geographic range of the tiger salamander complex. These clusters often contain a mixture of paedomorphic and metamorphic taxa, indicating that geographic isolation has played a larger role in lineage divergence than paedomorphosis in this system. This conclusion is bolstered by geography-informed analyses indicating no effect of life history strategy on population genetic differentiation and by model-based population genetic analyses demonstrating gene flow between adjacent metamorphic and paedomorphic populations. This fine-scale genetic perspective on life history variation establishes a framework for understanding how plasticity, local adaptation, and gene flow contribute to lineage divergence. Many members of the tiger salamander complex are endangered, and the Mexican axolotl is an important model system in regenerative and biomedical research. Our results chart a course for more informed use of these taxa in experimental, ecological, and conservation research.

Comparative host–parasite population genetic structures: obligate fly ectoparasites on Galapagos seabirds

Parasitology ◽  
2013 ◽  
Vol 140 (9) ◽  
pp. 1061-1069 ◽  
Author(s):  
IRIS I. LEVIN ◽  
PATRICIA G. PARKER
Keyword(s):  
Gene Flow ◽  
Genetic Differentiation ◽  
Population Genetic ◽  
Sequence Data ◽  
Population Genetic Study ◽  
Haemosporidian Parasite ◽  
Dna Sequence Data ◽  
Sula Granti ◽  
Breeding Attempt ◽  
Genetic Structures

SUMMARYParasites often have shorter generation times and, in some cases, faster mutation rates than their hosts, which can lead to greater population differentiation in the parasite relative to the host. Here we present a population genetic study of two ectoparasitic flies, Olfersia spinifera and Olfersia aenescens compared with their respective bird hosts, great frigatebirds (Fregata minor) and Nazca boobies (Sula granti). Olfersia spinifera is the vector of a haemosporidian parasite, Haemoproteus iwa, which infects frigatebirds throughout their range. Interestingly, there is no genetic differentiation in the haemosporidian parasite across this range despite strong genetic differentiation between Galapagos frigatebirds and their non-Galapagos conspecifics. It is possible that the broad distribution of this one H. iwa lineage could be facilitated by movement of infected O. spinifera. Therefore, we predicted more gene flow in both fly species compared with the bird hosts. Mitochondrial DNA sequence data from three genes per species indicated that despite marked differences in the genetic structure of the bird hosts, gene flow was very high in both fly species. A likely explanation involves non-breeding movements of hosts, including movement of juveniles, and movement by adult birds whose breeding attempt has failed, although we cannot rule out the possibility that closely related host species may be involved.

scholarly journals A LIFE-HISTORY BASED STUDY OF POPULATION GENETIC STRUCTURE: SEED BANK TO ADULTS IN PLANTAGO LANCEOLATA

Evolution ◽  
1993 ◽  
Vol 47 (3) ◽  
pp. 833-843 ◽  
Author(s):  
Stephen J. Tonsor ◽  
Susan Kalisz ◽  
Jill Fisher ◽  
Timothy P. Holtsford
Keyword(s):  
Life History ◽  
Genetic Structure ◽  
Seed Bank ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Plantago Lanceolata

scholarly journals Highly contrasted population genetic structures in a host-parasite pair in the Caribbean Sea

2017 ◽  
Vol 7 (22) ◽  
pp. 9267-9280 ◽  
Author(s):  
Quentin Jossart ◽  
Chantal De Ridder ◽  
Harilaos A. Lessios ◽  
Mathieu Bauwens ◽  
Sébastien Motreuil ◽  
...  
Keyword(s):  
Population Genetic ◽  
Caribbean Sea ◽  
The Caribbean ◽  
Genetic Structures ◽  
Host Parasite

Life history of turbot in Icelandic waters: Intra- and inter-population genetic diversity and otolith tracking of environmental temperatures

2014 ◽  
Vol 155 ◽  
pp. 185-193 ◽  
Author(s):  
Albert K. Imsland ◽  
Kristinn Ólafsson ◽  
Sigurlaug Skírnisdóttir ◽  
Snorri Gunnarsson ◽  
Matthías Oddgeirsson ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Life History ◽  
Population Genetic ◽  
Population Genetic Diversity ◽  
History Of ◽  
Environmental Temperatures ◽  
Icelandic Waters
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