Population genetic and genomic analyses of Western Massasauga (Sistrurus tergeminus ssp.): implications for subspecies delimitation and conservation

2021 ◽  
Author(s):  
Rian Bylsma ◽  
Danielle K. Walkup ◽  
Toby J. Hibbitts ◽  
Wade A. Ryberg ◽  
Andrew N. Black ◽  
...  
Keyword(s):  
Population Genetic ◽  
Genomic Analyses

scholarly journals Population structure in Neotropical plants: integrating pollination biology, topography and climatic niches

2021 ◽  
Author(s):  
Agnes Dellinger ◽  
Ovidiu Paun ◽  
Juliane Baar ◽  
Eva Temsch ◽  
Diana Fernández-Fernández ◽  
...  
Keyword(s):  
Genetic Differentiation ◽  
Population Genetic ◽  
Geographic Distance ◽  
Niche Modelling ◽  
Plant Populations ◽  
Population Genetic Differentiation ◽  
Genomic Analyses ◽  
Neotropical Plants ◽  
Topographic Barriers ◽  
Pollination Strategy

Animal pollinators mediate gene flow among plant populations, but, in contrast to well-studied topographic and (Pleistocene) environmental isolating barriers, their impact on population genetic differentiation remains largely unexplored. Comparatively investigating how these multifarious factors drive microevolutionary histories is, however, crucial for better resolving macroevolutionary patterns of plant diversification. We here combined genomic analyses with landscape genetics and niche modelling across six related Neotropical plant species (424 individuals across 33 localities) differing in pollination strategy to test the hypothesis that highly mobile (vertebrate) pollinators more effectively link isolated localities than less mobile (bee) pollinators. We found consistently higher genetic differentiation (FST) among localities of bee- than vertebrate-pollinated species with increasing geographic distance, topographic barriers and historic climatic instability. High admixture among montane populations further suggested relative climatic stability of Neotropical montane forests during the Pleistocene. Overall, our results indicate that pollinators may differentially impact the potential for allopatric speciation, thereby critically influencing diversification histories at macroevolutionary scales.

A population genetic perspective on the origin, spread and adaptation of the human malaria agents Plasmodium falciparum and Plasmodium vivax

2021 ◽  
Author(s):  
Virginie Rougeron ◽  
Larson Boundenga ◽  
Céline Arnathau ◽  
Patrick Durand ◽  
François Renaud ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Plasmodium Vivax ◽  
Population Genetic ◽  
Scientific Community ◽  
Parasite Species ◽  
Plasmodium Species ◽  
Protozoan Parasites ◽  
Body Of Knowledge ◽  
Genomic Analyses ◽  
The World

ABSTRACT Malaria is considered one of the most important scourges that humanity has faced during its history, being responsible every year for numerous deaths worldwide. The disease is caused by protozoan parasites, among which two species are responsible of the majority of the burden, Plasmodium falciparum and Plasmodium vivax. For these two parasite species, the questions of their origin (how and when they appeared in humans), of their spread throughout the world, as well as how they have adapted to humans have long been of interest to the scientific community. In this paper we review the existing body of knowledge, including current research dealing with these questions, focusing particularly on genetic and genomic analyses of these parasites and comparison with related Plasmodium species infecting other species of host (such as non-human primates).

KERAGAMAN GENETIK INDUK UDANG WINDU DI PERAIRAN SELATAN PANGANDARAN DAN BINUANGEUN, JAWABARAT

2018 ◽  
Vol 5 (3) ◽  
Author(s):  
Ratu Siti Aliah
Keyword(s):  
Genetic Diversity ◽  
Population Genetic ◽  
Gene Locus ◽  
Penaeus Monodon ◽  
12S Rrna ◽  
Brood Stock ◽  
Population Genetic Diversity ◽  
Result Show ◽  
Mtdna Diversity

An evaluation of the Black Tiger Brood Stock (Penaeus monodon) genetic diversity of Pangandaran and Binuangeun was conducted by using the mtDNA diversity of two gene locus of CO I and 12S rRNA to understand their population genetic diversity. The result show that the brood stock of Pangandaran has 17 haplotipe, while from Binuangeun has 13 haplotipe. The result indicated that the genetic diversity of the Balck Tiger brood stock of Pangandaran was higher than thatBinuangeun.Key words : Genetic diversity, Black Tiger brood stock, Pangandaran, Binuangeun

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