Results 1 to 10 of about 995 (50)

Speciation environments and centres of diversity in southern Africa. I. Conceptual framework

Bothalia: African Biodiversity & Conservation, 1982
A knowledge of the nature and distribution of the environments where speciation (micro-evolution) is or has been rapid would help explain plant distributions and give insight into the mechanisms of plant evolution.
E. R. Robinson, G. E. Gibbs Russell
doaj   +1 more source

Visual adaptation and microhabitat choice in Lake Victoria cichlid fish [PDF]

Royal Society Open Science, 2019
When different genotypes choose different habitats to better match their phenotypes, genetic differentiation within a population may be promoted. Mating within those habitats may subsequently contribute to reproductive isolation.
Daniel Mameri, Corina van Kammen, Ton G. G. Groothuis, Ole Seehausen, Martine E. Maan   +4 more
doaj   +1 more source

Differential genetic responses to the stress revealed the mutation-order adaptive divergence between two sympatric ginger species

BMC Genomics, 2018
Background Divergent genetic responses to the same environmental pressures may lead sympatric ecological speciation possible. Such speciation process possibly explains rapid sympatric speciation of island species.
Bing-Hong Huang, Yuan-Chien Lin, Chih-Wei Huang, Hsin-Pei Lu, Min-Xin Luo, Pei-Chun Liao   +5 more
doaj   +1 more source

One fish, two fish, red fish, dead fish: Detecting the genomic footprint of ecological incompatibilities

PLoS Biology, 2022
As we uncover the ubiquity of hybridization in nature, determining how natural selection acts on hybrids has newfound importance for speciation.
Jenn Coughlan
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Eco-Geography and Phenology Are the Major Drivers of Reproductive Isolation in the Royal Irises, a Species Complex in the Course of Speciation

Plants, 2022
The continuous nature of speciation implies that different species are found at different stages of divergence, from no- to complete reproductive isolation. This process and its underlying mechanisms are best viewed in incipient species.
Inna Osmolovsky, Mariana Shifrin, Inbal Gamliel, Jonathan Belmaker, Yuval Sapir   +4 more
doaj   +1 more source

Ecological risk and chemical speciation of heavy metals in surface sediments of the Pearl River Estuary for comprehensive assessment

Frontiers in Environmental Science
The Pearl River Estuary, a vital ecological and economic zone in Southern China, has been heavily impacted by industrial discharges, leading to significant heavy metal contamination.
Zhiyan Liu, Qian Wu, Chao He, Peng Zhang, Xiaoqin Wang, Zifen Luo, Liaoyuan Yang, Chaoqing Huang   +7 more
doaj   +1 more source

Adaptive Divergence without Distinct Species Relationships Indicate Early Stage Ecological Speciation in Species of the Rhododendronpseudochrysanthum Complex Endemic to Taiwan

Plants, 2022
The testing association of environmental variables with genetic and epigenetic variation could be crucial to deciphering the effects of environmental factors playing roles as selective drivers in ecological speciation.
Jia-Jia Cao, Yi-Shao Li, Chung-Te Chang, Jeng-Der Chung, Shih-Ying Hwang   +4 more
doaj   +1 more source

The consequences of genomic architecture on ecological speciation in postglacial fishes

Current Zoology, 2013
The quest for the origin of species has entered the genomics era. Despite decades of evidence confirming the role of the environment in ecological speciation, an understanding of the genomics of ecological speciation is still in its infancy.
Sean M. ROGERS, Jonathan A. MEE, Ella BOWLES
doaj  

Ecological disruptive selection acting on quantitative loci can drive sympatric speciation

npj Systems Biology and Applications
The process of speciation generates biodiversity. According to the null model of speciation, barriers between populations arise in allopatry, where, prior to biology, geography imposes barriers to gene flow.
Pavithra Venkataraman, Supreet Saini
doaj   +1 more source

How might epigenetics contribute to ecological speciation?

Current Zoology, 2013
Speciation research has seen a renewed interest in ecological speciation, which emphasises divergent ecological selection leading to the evolution of reproductive isolation.
Gilbert SMITH, Michael G. RITCHIE
doaj