Speciation Current Events

Speciation Current Events, Speciation News Articles.
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Evidence for sympatric speciation by host shift in the sea
Using a combination of genetic, ecological, and biogeographic studies, researchers have found that a new species of reef fish might have evolved when some individuals of the ancestral population began inhabiting a novel species of coral and that this (2004-08-23)

The mechanics of speciation
Mate choice, competition, and the variety of resources available are the key factors influencing how a species evolves into separate species, according to a new mathematical model that integrates all three factors to reveal the dynamics at play in a process called sympatric speciation. (2011-06-24)

Butterflies show origin of species as an evolutionary process, not a single event
The evolution of new species might not be as hard as it seems, even when diverging populations remain in contact and continue to produce offspring. That's the conclusion of studies, reported in the Cell Press journal Cell Reports on Oct. 31, that examine the full genome sequences of 32 Heliconius butterflies from the Central American rain forest, representing five different species. (2013-10-31)

Study uncovers new evidence on species evolution
A study involving Simon Fraser University researchers and published today in the journal Science has found evidence for the genomic basis of how new species evolve, in adapting to different environments. Researchers studying an insect known as the walking stick (genus Timema) determined that the process of 'speciation' happened in association with the use of different host plants. (2014-05-15)

Poisonous frogs more likely to face extinction, study finds
Scientists at the University of Liverpool have found that amphibians that use toxins to protect themselves against predators are at a higher risk of extinction than those who use other types of defense, which poses a challenge to a long-held evolutionary hypothesis. (2015-10-19)

Paper offers new insights into the genomics of speciation
A new paper by a team of researchers led by University of Notre Dame biologist Jeffrey L. Feder could herald an important shift in thinking about the genomics of speciation. (2010-05-10)

Evolution of new species requires few genetic changes
Only a few genetic changes are needed to spur the evolution of new species -- even if the original populations are still in contact and exchanging genes. Once started, however, evolutionary divergence evolves rapidly, ultimately leading to fully genetically isolated species, report scientists from the University of Chicago in the Oct. 31 Cell Reports. (2013-10-31)

Cold is hot in evolution -- UBC researchers debunk belief species evolve faster in tropics
University of British Columbia researchers have discovered that contrary to common belief, species do not evolve faster in warmer climates. (2007-03-15)

Biologists watch speciation in a laboratory flask
Biologists have discovered that the evolution of a new species can occur rapidly enough for them to observe the process in a simple laboratory flask. (2016-11-28)

Evolution on the fast lane -- 1 flounder species became 2
A research group at the University of Helsinki discovered the fastest event of speciation in any marine vertebrate when studying flounders in an international research collaboration project. This finding has an important implication on how we understand evolution in the sea. (2017-05-30)

Electric fish in Africa could be example of evolution in action
Some electric fish in Africa have different communication patterns and won't mate with each other, although their DNA is the same, find Cornell scientists. They think the fish are living examples of a species of fish diverging into separate species. (2006-06-01)

Long-held assumption about emergence of new species questioned
Darwin referred to the origin of species as (2013-09-02)

University biologist publishes book on bird speciation
A University of Chicago biologist and world-renowned expert on bird speciation has compiled eight years of research and writing into a recently published book, (2007-09-25)

Ancient horse fossils hint factors driving evolution different than thought
A new study analyzing the evolution of horses suggests that patterns of migration and changes in environment drive the development of new traits, countering a theory called rapid phenotypic evolution that proposes the opposite -- that is, that development of traits is what allows a species to take over new niches. (2017-02-09)

Research identifies drivers of rich bird biodiversity in Neotropics
New research challenges a commonly held view that explains how so many species of birds came to inhabit the Neotropics, an area rich in rain forest that extends from Mexico to the southernmost tip of South America. The study suggests that tropical bird speciation is not directly linked to geological and climate changes, as traditionally thought, but is driven by movements of birds across physical barriers that occur long after those landscapes' geological origins. (2014-09-10)

Humans speeding up evolution by causing extinction of 'younger' species
Just three years after crayfish were introduced to a B.C. lake, two species of fish that had existed in the lake for thousands of years were suddenly extinct. But it's what took their place that has scientists fascinated. New research from UBC shows that when humans speed up the usually slow process of evolution by introducing new species, it can result in a lasting impact on the ecosystem. (2016-02-23)

Study illustrates diversification, speciation in biological "islands"
Lizard species on large Caribbean islands are more numerous than those on smaller islands because there is more evolution going on. Jonathan Losos, biology professor at Washington University in St. Louis, has shown that the bigger the island, the faster species proliferate and diversity. His study complements the famed (2000-12-13)

What women want makes a difference
Mating discrimination between two species of Drosophila is more pronounced where they hybridize and genes related to odor appear responsible for this (2004-11-22)

Butterflies use polarized light to attract mates
Up to 20 layers of transparent scales on butterfly wings scatter white light to produce brilliant blue structural color. Alison Sweeney, Duke University, and collaborators at the Smithsonian Tropical Research Institute report in Nature that polarized light from iridescent female Heliconius butterflies functions as a mating signal. This may be the first example of mate recognition based on polarized light. Physical properties of wing scales may play an important role in speciation of Heliconius butterflies. (2003-04-30)

Darwin told us so: UBC researcher shows natural selection speeds up speciation
In the first experiment of its kind conducted in nature, a University of British Columbia evolutionary biologist has come up with strong evidence for one of Charles Darwin's cornerstone ideas -- adaptation to the environment accelerates the creation of new species. (2008-04-01)

Parasite's sperm-encryption keeps species apart
Scientists have found the most convincing evidence yet that a parasite can contribute to splitting a species in two, thanks to a phenomenon where a wasp's damaged sperm can be (2001-02-07)

Explaining differences in rates of evolution
Scientists look to fossils and evolutionary trees to help determine the rate of evolution -- albeit with conflicting results. A new model by ETH researchers has helped to resolve these contradictions. (2018-12-18)

Bird tree tells new tale of evolution
Using the world's first family tree linking every known bird species, scientists, including two at Simon Fraser University, have discovered that birds appear to be accelerating their rate of evolution. The finding is contrary to the scientists' expectations. A new paper in the journal Nature contains the scientists' profile of how 9,993 bird species currently alive globally made it to where they are today. The researchers expected to see bird speciation slowing down through time. (2012-11-01)

Choosy females make colourful males
Female fish prefer brightly coloured males because they are easier to see and are in better shape concludes Dutch researcher Martine Maan following her study of fish speciation in the East African lakes. Environmental variation subsequently leads to differences in preference and eventually to speciation. (2006-05-11)

Male pregnancy in seahorses may affect formation of new species
Male pregnancy in seahorses may do more than reverse traditional gender roles. It could also influence the way new species form from single populations of these ancient creatures. (2003-05-05)

Evolutionary split up without geographic barriers
Evolutionary biologists in Konstanz have completed the most extensive study of sympatric speciation so far. They used around 20,000 characteristics of 450 fish to document the parallel evolution of cichlid fish in two crater lakes, Apoyo and Xiloá, in Nicaragua. (2016-07-04)

Pitt study: Sexual selection alone could spark formation of new species
Because of imprinted preferences, strawberry poison frog females mate more with similar colored males, and less with differently colored males. Over time, the behavior could lead to two color types becoming separate species. (2019-10-17)

DNA analyses show a dynamic coevolutionary relationship between birds and their feather mites
A genetic study uncovers that birds maintain a dynamic coevolutionary relationship with their feather mites. The study has involved the participation of the Estación Biológica de Doñana from the CSIC, and its results have just been published in the journal Molecular Ecology. (2019-01-17)

Genetic analysis of New World birds confirms untested evolutionary assumption
Biologists have always been fascinated by the diversity and changeability of life on Earth and have attempted to answer a fundamental question: How do new species originate? (2017-05-30)

Insect yields clues to evolution of species
Studies of a California insect, the walking stick, are helping to illuminate the process of evolution of new species, according to research published in this week's issue of Nature. (2002-05-22)

Birds of a feather
Biologists have always been fascinated by the diversity and changeability of life on Earth and have attempted to answer a fundamental question: How do new species originate? A new study provides the first large-scale test of the link between population differentiation rates and speciation rates. The results confirm the evolutionary importance of population genetic differentiation. (2017-06-13)

Study Of Origin Of Species Enters The Molecular Age
Nothing brings two people closer together than sex, but for closely related species of fruit flies, it may be what keeps them apart. Researchers at the University of Chicago have recently discovered a gene that appears to play a crucial role in causing one species to split into two--and stay that way. The gene causes the male progeny of two recently separated species to be sterile--a condition known as hybrid male sterility. (1998-11-20)

Scientists discover that Hawai'i is not an evolutionary dead end for marine life
Researchers at the Hawai'i Institute of Marine Biology (HIMB), an organized research unit in the University of Hawai'i at Mānoa's School of Ocean and Earth Science and Technology have demonstrated that Hawaii is not an evolutionary dead end for marine species. (2011-07-01)

Ecological speciation by sexual selection on good genes
Darwin suggested that the action of natural selection can produce new species, but 150 years after the publication of (2009-11-26)

How important is geographical isolation in speciation?
A genetic study of island lizards shows that even those that have been geographically isolated for many millions of years have not evolved into separate species as predicted by conventional evolutionary theory. Professor Roger Thorpe and colleagues Yann Surget-Groba and Helena Johansson, at Bangor University, UK, reveal their findings April 29 in the open-access journal PLoS Genetics. (2010-04-29)

Cricket's finicky mating behavior boosts biodiversity
The Laupala cricket is the world's fastest-evolving invertebrate, say evolutionary biologists from Lehigh University and the University of Maryland. Female crickets select mates based on slight variations in the pulse rates of male courtship songs. Individual choices, the researchers say, can have macro-evolutionary consequences. (2005-02-04)

One-of-a-kind? Or not. USU geneticist studies formation of new species
Using stick insects of the Timema genus, a multi-institution research team combined field experiments with genomics, including sequencing of more than 1,000 genomes, to study speciation. (2017-02-17)

Family of rodents may explain how some groups of animals become so diverse
FSU Professor of Biological Science Scott Steppan and his former postdoctoral researcher John Schenk, now at Georgia Southern University, developed a new model that shows how geography can play a major role in how families of animals evolve and result in many species. (2018-10-03)

Engineering speciation events in insects may be used to control harmful pests
This research provides the foundations for scientists to be able to prevent genetically modified organisms from reproducing with wild organisms. Additionally, the research will allow scientists to develop new tools to control populations of disease carrying insects and invasive species in a highly targeted fashion. (2020-09-08)

Emergence of fungal plant diseases linked to ecological speciation
A new commentary on the nature of pathogens is raising startling new questions about the role that fundamental science research on evolution plays in the understanding of emerging disease. (2010-05-13)

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