Results 91 to 100 of about 20,176 (135)

A role for environmental niche divergence in the rapid radiation of Nicotiana section Suaveolentes (Solanaceae)

open access: yesTAXON, Volume 75, Issue 3, June 2026.
Abstract Nicotiana sect. Suaveolentes is a group that has undergone recent and rapid radiation, a clade that originated ca. six million years ago and has since rapidly speciated throughout Australia, with a few taxa on Pacific Islands and one in Namibia (Africa). Post‐tetraploidisation, species in N. sect.
Charlotte Phillips   +7 more
wiley   +1 more source

Silene, a versatile model system: from sex and genome evolution to ecology and speciation

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3613-3630, June 2026.
Summary Fundamental and applied research in evolutionary biology benefits from the use of model systems in which approaches from disparate disciplines can be integrated. Here, we review recent progress in evolutionary research on the long‐standing model system Silene, a large genus with a well‐resolved phylogeny and newly available, expanded genomic ...
Sophie Karrenberg   +16 more
wiley   +1 more source

Ecological change may be a common initiator of evolutionary pollinator shifts

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3572-3583, June 2026.
Summary Although evolutionary pollinator shifts are accepted as major sources of floral and species diversity in angiosperms, the mechanisms triggering pollinator shifts remain largely unexplored. In 1970, Stebbins proposed that ecological change may be a common initiator of evolutionary pollinator shifts, but empirical tests of Stebbins' hypothesis ...
Agnes S. Dellinger
wiley   +1 more source

Chromosome-level genome assembly of Z strain European corn borer Ostrinia nubilalis (Lepidoptera: Crambidae)

open access: yesScientific Data
European corn borer Ostrinia nubilalis (Hübner) is the most important pest of maize around world, and an ideal model for the sympatric host races, evolutionary and speciation research.
Xinhua Ding   +8 more
doaj   +1 more source

Genetic and Ecological Divergence Between Northwest Atlantic Killer Whale Populations

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Killer whale (Orcinus orca) populations exhibit substantial genetic, ecological, and morphological differences across their global distribution. In this study, we use whole‐genome resequencing and compound‐specific stable isotope analysis of amino acids to show concurrent genetic and ecological differentiation in two relatively understudied killer ...
Caila E. Kucheravy   +7 more
wiley   +1 more source

Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of Hypancistrus (Siluriformes: Loricariidae) in the Xingu River

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
We uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Franciele F. Kerniske   +4 more
wiley   +1 more source

Phenotypic Variation of Lake Charr (Salvelinus namaycush) in North America

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Lake charr (Salvelinus namaycush) head and body variation were compared among lakes across the species range in North America to determine if variation was organized more strongly among morphs or lakes. For 3445 lake charr, head‐shape variation was > 17 times greater among morphs than lakes and body‐shape variation was > 16 times greater among morphs ...
Michael J. Hansen   +5 more
wiley   +1 more source

Geographic and Ecological Dimensions of Host Plant-Associated Genetic Differentiation and Speciation in the Rhagoletis cingulata (Diptera: Tephritidae) Sibling Species Group

open access: yesInsects, 2019
Ascertaining the causes of adaptive radiation is central to understanding how new species arise and come to vary with their resources. The ecological theory posits adaptive radiation via divergent natural selection associated with novel resource use; an ...
Meredith M. Doellman   +13 more
doaj   +1 more source

Genomic Insights Into Species Divergence and Adaptive Evolution in the Grass Genus Orinus on the Qinghai‐Tibet Plateau

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Using population genomic data, we investigated the evolutionary history and genomic divergence of closely related terrestrial plant lineages to test whether speciation proceeded in the presence of gene flow. Demographic modeling and genome‐wide scans revealed divergence with ongoing gene flow, heterogeneous genomic differentiation, and signatures of ...
Ai Liu   +7 more
wiley   +1 more source

Genetic Divergence in the Absence of Strong Ecological Differences Between Coexisting White and Common Atlantic Marine Stickleback

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
We examined whether the “white” threespine stickleback of Nova Scotia represents a nascent species distinct from sympatric common marine sticklebacks. Genomic analyses revealed that whites form a unique genetic cluster with low but widespread divergence across the genome despite evidence of gene flow, while morphometric and isotopic data indicated ...
Kieran Samuk   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy