• Allochronic speciation (also known as allochronic isolation, or temporal isolation) is a form of speciation (specifically ecological speciation) arising from reproductive isolation that occurs due to a change in breeding time that reduces or eliminates gene flow between two populations of a species. (wikipedia.org)
  • Speciation ultimately results due to the reproductive isolation between two populations. (wikipedia.org)
  • In allopatric speciation, if an extended geographic barrier, like a mountain range develops, gene flow between two populations can be prevented. (jove.com)
  • Furthermore, environmental conditions such as climate, resources or predators can result in different selective pressures between the populations and eventually result in speciation. (jove.com)
  • In sympatric speciation, natural selection can occur within populations and result in the formation of new species. (jove.com)
  • In allopatric speciation, gene flow between two populations of the same species is prevented by a geographic barrier, like a mountain range or habitat fragmentation. (jove.com)
  • Once in isolation, the individuals in these populations may face different external pressures, such as climate, resource availability or predation. (jove.com)
  • These differences in natural selection combined with genetic drift and mutation over many generations of separation eventually result in the two populations becoming discrete species. (jove.com)
  • Local adaptation, whereby individuals of a population exhibit higher fitness in their local environment compared to that experienced by other populations, has the potential to shape the distribution of genetic diversity and influence speciation. (europa.eu)
  • For speciation to occur, two new populations must be formed from one original population and they must evolve in such a way that it becomes impossible for individuals from the two new populations to interbreed. (lumenlearning.com)
  • Typically, environmental conditions, such as climate, resources, predators, and competitors for the two populations will differ causing natural selection to favor divergent adaptations in each group. (lumenlearning.com)
  • Isolation of populations leading to allopatric speciation can occur in a variety of ways: a river forming a new branch, erosion creating a new valley, a group of organisms traveling to a new location without the ability to return, or seeds floating over the ocean to an island. (lumenlearning.com)
  • We show that genetic differentiation can be explained by the degree of glacial habitat connectivity among mountains, and that mountains have facilitated the persistence of populations throughout glacial/interglacial cycles. (uea.ac.uk)
  • Eventually when the climate warms, the populations are compelled to seek higher altitudes again, where each mountain territory is fully isolated. (fpe.ph)
  • Instead of using random and often neutral genetic markers to guide conservation efforts, complete genome data will be used to evaluate how populations of threatened bird species differ on a functional genomic level and to develop targeted conservation strategies based on these data. (otago.ac.nz)
  • To contribute with this effort, my latest line of research seeks to unravel the genomic and geographic basis of adaptation to climate change and identify the most threatened and resilient populations of selected bird lineages across environmental gradients in both Europe and the Amazon basin. (luomus.fi)
  • Despite the assumed oversimplification of the traditional categorization of speciation processes (allopatric, parapatric, and sympatric), the spatial context and the extent of gene flow between potentially diverging populations during speciation play a key role in determining whether, and how fast, reproductive isolation can evolve (8,9). (researchsquare.com)
  • Thus, the mechanisms of local adaptation and speciation are deeply influenced by the biogeographical and demographic history of populations, and may be triggered during periods of major ecosystem fluctuations (7,10). (researchsquare.com)
  • Wild populations are on the move, sometimes in response to climate change, often hitch-hiking on us. (longnow.org)
  • The discipline studying genetic composition of populations and effects of factors such as GENETIC SELECTION, population size, MUTATION, migration, and GENETIC DRIFT on the frequencies of various GENOTYPES and PHENOTYPES using a variety of GENETIC TECHNIQUES. (lookformedical.com)
  • Speciation occurs when a single population becomes two separate, genetically non-identical populations that are unable to interbreed due to changes that produce physical, biological or behavioural barriers. (atarsurvivalguide.com)
  • The populations on either side may become different due to the process of natural selection, or they may become different due to mutation/genetic drift. (atarsurvivalguide.com)
  • The populations become so different that members of the different populations can no longer interbreed with one another to produce fertile offspring, and hence, speciation has occurred (leading to the creation of new species). (atarsurvivalguide.com)
  • This occurs by two primary mechanisms: allopatric and sympatric speciation. (jove.com)
  • There are two primary mechanisms, speciation with and without geographic isolation-allopatric and sympatric speciation, respectively. (jove.com)
  • This phenomenon, called sympatric speciation, is very rare in animals. (rdworldonline.com)
  • The two forms of speciation are sympatric speciation and allopatric speciation , and for these to occur, different isolating mechanisms take place. (atarsurvivalguide.com)
  • How does sympatric speciation occur? (atarsurvivalguide.com)
  • By leveraging genomic sequencing, field behavior experiments, and climate and color pigment analyses, we have uncovered the evolutionary genetic basis of speciation in these very precious wood warbler species. (goldengateaudubon.org)
  • A research team led by Professor Axel Janke, evolutionary geneticist at the Senckenberg Biodiversity and Climate Research Center and Goethe University, has found that the rorquals, including the blue whale, mated across emerging species boundaries. (rdworldonline.com)
  • Evolutionary biologists explore the origins and relationships between different organisms by examining the principles of natural selection and genetic variation. (freescience.info)
  • Evolutionary biology, including the study of genetic diversity and population structure, is crucial for guiding conservation efforts. (freescience.info)
  • According to McKenna "This work involved the most comprehensive analyses of DNA data to uncover the geographic and evolutionary origins of a group of Antarctic insects and is notable for having illuminated the remarkable antiquity of Antarctic weevil biodiversity, its geographic origins, and its apparent resilience to climate cooling over millennia. (memphis.edu)
  • Speciation with gene flow is a common pattern in marine species, and it raises questions whether current hybridization events should be considered as a part of these species' evolutionary history or a conservation issue. (fmach.it)
  • What is the genetic basis of evolutionary adaptation to new environments? (otago.ac.nz)
  • These factors have provided animals with greater opportunities for speciation and diversification over evolutionary time. (microbiologynote.com)
  • Defining species and understanding the processes behind speciation are key components in studies of evolutionary ecology (1,2). (researchsquare.com)
  • 800 strains, the study looked into morphological and genetic analyses to study the species' evolutionary history, and the timescale on which this small diatom managed to cover most of the planet's far-flung corners of the globe. (elisebiersma.com)
  • I am a diversity and speciation researcher with evolutionary genomics and biogeography expertise and a background in evolutionary ecology. (lu.se)
  • The only illustration in Darwin's On the Origin of Species is (a) a diagram showing speciation events leading to biological diversity. (lumenlearning.com)
  • In fact, recent research-ranging in topics from butterfly speciation to the genetic diversity of immune systems in giant pandas-has found that genetics play a vital role in the outcome of conservation efforts, and thus the fate of entire species. (columbia.edu)
  • Through this study, they unravel the secrets behind the ecological diversity of life we see today, including speciation . (freescience.info)
  • As the climate cooled over the last ~20 million years, weevil diversification accelerated, resulting in an unusual diversity of living weevil species for such an inhospitable region - more than 30 species of Ectemnorhinini are known from the Antarctic. (memphis.edu)
  • This suggests that diversification driven by climate-cooling may be a general biodiversity paradigm underlying much of the region's present biodiversity and should be sought broadly as an explanation for the unexpected diversity of some groups of Antarctic organisms. (memphis.edu)
  • Reconstructing past events of hybridization and population size changes are required to understand speciation mechanisms and current patterns of genetic diversity, and ultimately contribute to species' conservation. (fmach.it)
  • Sexual reproduction, in particular, promotes genetic diversity through recombination, which can give rise to new combinations of traits and potentially new species. (microbiologynote.com)
  • Here, we investigated how these biogeographical and ecological events have shaped patterns of genetic diversity and divergence in African Jerboas, desert specialist rodents. (researchsquare.com)
  • Through gene flow, syngameons can increase genetic diversity, facilitate the colonization of new environments, and contribute to hybrid speciation. (nau.edu)
  • Trying to answer that question, a new large-scale genetic study in Nature Communications revealed how a single-celled alga has spread across the globe and in its journey radiated into an unprecedented species diversity since the Eocene/Oligocene global cooling period . (elisebiersma.com)
  • that greater genetic diversity of barnacle larvae increases settlement success. (gu.se)
  • Developing our earlier findings of substantial inter-individual variability in responses to marine climate change, a multi-partner collaborative project with Lars Gamfeldt (UGOT) and Johan Eklöf (Stockholm), among others, investigated the importance of inter-species diversity for resilience to climate change. (gu.se)
  • Thus, in order to contribute towards plugging the phylogeography knowledge gap, the objectice of this study is to determine levels of genetic differentiation in isopods of the genera Tylos and Excirolana in the South African coast to understand their genetic diversity, connectivity and diversification processes. (sun.ac.za)
  • Modeling changes in species breeding patterns due to climate as well as understanding the genetic mechanisms that control it has proven to be important. (wikipedia.org)
  • The results show that climate shifts can promote genetic and phenotypic divergence, and potentially speciation, and direct attention towards incorporating adaptive traits into phylogeographic studies to better resolve the mechanisms of speciation. (datadryad.org)
  • However, only few studies have used intraspecific genetic data to analyse the mechanisms by which endemism may emerge at the microevolutionary scale. (uea.ac.uk)
  • Cross-genome analyses now indicate that there are apparently no genetic barriers between species and that there has been gene flow among different rorqual species in the past. (rdworldonline.com)
  • In these analyses, speciation is not considered as a bifurcating phylogenetic tree as Darwin has envisioned it, but as an interwoven network. (rdworldonline.com)
  • The analyses show that the Columbian mammoth that inhabited North America during the last ice age was a hybrid between the woolly mammoth and a previously unknown genetic lineage of mammoth. (scitechdaily.com)
  • Analyses of the genomes showed that the oldest specimen, which was approximately 1.2 million years old, belonged to a previously unknown genetic lineage of mammoth. (scitechdaily.com)
  • But our DNA analyses now show that there were two different genetic lineages, which we here refer to as the Adycha mammoth and the Krestovka mammoth. (scitechdaily.com)
  • Our analyses show that most cold adaptations were present already in the ancestor of the woolly mammoth, and we find no evidence that natural selection was faster during the speciation process," says co-lead author David Díez-del-Molino. (scitechdaily.com)
  • It is well established from the fossil record and phylogeographic analyses that late Quaternary climate fluctuations led to substantial changes in species' distribution, but whether and how these fluctuations resulted in phenotypic divergence and speciation is less clear. (datadryad.org)
  • In this study, we tested this hypothesis in the sky island Grey-headed Bullfinch (Pyrrhula erythaca) species complex via statistical analyses of both genetic and ecological data. (ntnu.edu.tw)
  • For Bythinella an allopatric mode of speciation and distribution of the species has generally been postulated. (pensoft.net)
  • Increasing evidence of post-divergence gene flow between taxa is shifting our understanding on the mode of speciation. (ntnu.edu.tw)
  • However, reproductive barriers that lead to speciation do not have to be geographic. (jove.com)
  • Gradual genetic differentiation among the species that moved to the new territories may also result in speciation. (fpe.ph)
  • 203 however genetic factors must be involved for isolation to lead to complete reproductive isolation and subsequent speciation. (wikipedia.org)
  • It is suggested that divergent natural selection in contrasting habitats might trigger reproductive isolation through local adaptation, and consequently speciation, by limiting the chances of interaction between potentially reproducing individuals (3-5). (researchsquare.com)
  • Using genomic data analyzed with phylogenetic and population genetic approaches, researchers have now cracked this mystery, showing that the Persian walnut is the result of hybridization between two long-extinct species around 3.45 million years ago. (sciencedaily.com)
  • We applied a battery of genome-wide methods for hybridization detection and to test speciation models to infer the time of origin of the Persian walnut," said the Wei-Ning Bai, another senior author. (sciencedaily.com)
  • In this study, we evaluated the history, patterns, and consequences of hybridization in a pinyon pine syngameon using morphological and genomic data to assess genetic structure, demographic history, and geographic and climatic data to determine niche differentiation. (nau.edu)
  • Our study shows that sequential hybridization may have caused relatively rapid speciation and facilitated the colonization of different niches, resulting in the rapid formation of two new lineages. (nau.edu)
  • The monsoonal climate of East Asia gives rise, in combination with strong elevational diversification, to a great variety of vegetation types (Supplementary Fig. 2B ). (nature.com)
  • The role of past landscape and climate change on rates of biotic diversification and extinction provides a historical perspective supporting forecasts on how individual species and entire communities will respond to global change during the Anthropocene. (luomus.fi)
  • Available phylogeographic studies in this region have uncovered substantial taxa diversification induced by the climate shifts that occurred during the Pliocene-Pleistocene interval (~5 million years ago [Mya]) and the successive range shifts of the Sahara desert (12-15). (researchsquare.com)
  • Such dynamics resulted in new selective pressures and/or geographic isolation within lineages, causing events of genetic diversification, adaptation, and eventually speciation (11). (researchsquare.com)
  • The causes of speciation in the sea are rarely obvious, because geographical barriers are not conspicuous and dispersal abilities or marine organisms, particularly those of species with planktonic larvae, are hard to determine. (bioone.org)
  • We reconstructed the phylogeny of the pantropical and subtropical sea urchin genus Diadema, using sequences of mitochondrial DNA from 482 individuals collected around the world, to determine the efficacy of barriers to gene flow and to ascertain the history of possible dispersal and vicariance events that led to speciation. (bioone.org)
  • Aim: In theory, long-distance dispersal (LDD) outside a species' range contributes to genetic divergence. (authorea.com)
  • In a biogeographic system (the Australian Wet Tropics, AWT) with a well-established history of refugial isolation during Pleistocene glacial periods, we test whether climate-mediated changes in distribution drove genetic and phenotypic divergence in the rainforest frog, Cophixalus ornatus. (datadryad.org)
  • Fragmentation, geographic isolation, and genetic differentiation. (fpe.ph)
  • The resulting isolation between the islands may influence the emergence of a new, distinct species by way of natural selection and/or genetic drift. (fpe.ph)
  • Questions about individual variation (behavior, morphology, and physiology) and population patterns (social and genetic structure, population stability, species boundaries) are usually addressed in isolation from one another, but it is the relationship between these two levels that provides powerful predictive information about the causes and consequences of large scale patterns, such as the generation and loss of biodiversity. (colorado.edu)
  • In contrast to previous beliefs, it hereby shows that the evolution of microorganisms is highly driven by colonisation to suitable habitats and subsequent speciation in isolation . (elisebiersma.com)
  • Genetic isolation can occur either prior to or following physical isolation, however in both cases, once isolation has occurred, the two groups acquire different phenotypes. (atarsurvivalguide.com)
  • Allopatric speciation is speciation that occurs due to geographic isolation . (atarsurvivalguide.com)
  • Speciation under gene flow is rare. (rdworldonline.com)
  • Despite the largely overlapping distributions at a macrogeographic scale, our genetic results suggest that the two species remain reproductively isolated, as only negligible levels of gene flow were observed. (researchsquare.com)
  • Investigating the differentiation of the TPS gene family could provide valuable theoretical support for the genetic improvement of oil-producing plants. (bvsalud.org)
  • Excirolana latipes was characterized by a strong genetic structure across Cape Point, that appears to act as a barrier to gene flow between the western and southern lineages. (sun.ac.za)
  • Mobility: Animals are generally more mobile than plants and can move to new areas, which facilitates genetic exchange, colonization of new habitats, and speciation. (microbiologynote.com)
  • In contrast to other AWT vertebrates, the three major lineages differ in ecologically relevant morphology and in mating call, reflecting divergent selection and/or genetic drift in the peripheral isolates. (datadryad.org)
  • Major Lineage: Major genetic lineages. (datadryad.org)
  • We demonstrated that Pinus edulis, a dominant species in the Southwestern US and a barometer of climate change, is a core participant in the syngameon, involved in the formation of two drought-adapted hybrid lineages including the parapatric and taxonomically controversial fallax-type. (nau.edu)
  • Allochrony is thought to evolve more easily the greater the heritability of reproductive timing-that is, the greater the link between genes and the timing of reproduction-the more likely speciation will occur. (wikipedia.org)
  • Speciation may occur when a certain species from one island disperses towards a nearby isolated island (by flying or rafting). (fpe.ph)
  • On a certain terrestrial territory, speciation may occur when inhabitants of a high altitude territory (ranges of mountains of varying heights, for example) are allowed to move to the lowland by a shift towards a cooler climate. (fpe.ph)
  • Usually, species are assumed to be reproductively isolated because geographical or genetic barriers inhibits genetic exchange. (rdworldonline.com)
  • Participation in the syngameon may allow adaptive traits to be introgressed across species barriers and provide the changes needed to survive future climate scenarios. (nau.edu)
  • The term allochrony is used to describe the general ecological phenomenon of the differences in phenology that arise between two or more species-speciation caused by allochrony is effectively allochronic speciation. (wikipedia.org)
  • We further use Ecological Niche Modeling to show that these patterns align with maps of climate refugia, and we predict species' chances of persistence given the future climatic changes expected for East Asia. (nature.com)
  • Ecological Niche Modeling (ENM) is widely used to predict species distributions and has been applied to identify climate refugia 14 . (nature.com)
  • This ecological knowledge is essential in the face of factors like habitat loss or climate change, allowing for effective conservation measures based on natural selection. (freescience.info)
  • We test the predictive power of 22 variables from spiders' morphological, genetic, geographic, ecological and behavioral landscapes on species richness of 45 genera selected to represent the phylogenetic and biological breath of Araneae. (biomedcentral.com)
  • Results of ecological niche modeling suggested that their speciation may be attributed to the niche conservatism of these birds and the lack of a suitable ecological corridor during subsequent milder glacial episodes. (ntnu.edu.tw)
  • The legacy of contemporary societies in less than three hundred years, is the ecological and climate emergency we now all face. (voteclimateone.org.au)
  • The overlapping ecological preferences at a macro-geographic scale and the ecological divergence at the micro-habitat scale suggest that local adaptation may have played a crucial role in the speciation process of these species. (researchsquare.com)
  • The Amblyomma maculatum Koch, 1844 (Acari: Ixodidae) group of ticks: phenotypic plasticity or incipient speciation? (cdc.gov)
  • Results of coalescent-based analysis of multiple nuclear loci suggested that P. e. owstoni likely colonized Taiwan island during the severe mid-Pleistocene glacial climate followed by strictly allopatric divergence from P. e. erythaca distributed in Himalayas-Hengduan mountains and central North China. (ntnu.edu.tw)
  • In the Balkans, previous studies have addressed its morphological and genetic differentiation within Greece and Romania while the Bulgarian species have remained poorly known. (pensoft.net)
  • Here, we use landscape analysis of genomic SNP data sampled from two high-elevation plant species from an archipelago of tropical sky-islands (the Transmexican Volcanic Belt) to test for population genetic differentiation, synchronous demographic changes and habitat persistence. (uea.ac.uk)
  • Thus, their allele frequencies at numerous genetic loci gradually become increasingly different as new alleles independently arise by mutation in each population. (lumenlearning.com)
  • Through the study of genetic variation and natural selection, biologists can uncover the specific traits that enable organisms to thrive in different environments. (freescience.info)
  • The environmental drivers associated with the phenotypic variation in S. aglaja and F. adippe were largely the same as those associated with their genetic structure, hinting at a genetic underpinning of the observed morphological variation due to local adaption. (frontiersin.org)
  • Between-individual genetic variation is the substrate for selection. (biomedcentral.com)
  • The contemporary distribution of genetic variation suggests ongoing population expansions. (researchsquare.com)
  • Yet according to a new study by the International Union for Conservation of Nature (IUCN) published in research journal Plos One, the majority of species that are most vulnerable to climate change are not given conservation priority. (columbia.edu)
  • The identification of genetic traits associated with species' responses to climate change is critical, as it can support conservation strategies to mitigate biodiversity loss and enhance species resilience. (luomus.fi)
  • Most importantly, the outcome of this study shows the importance of integrating genetic approaches into marine conservation in South Africa. (sun.ac.za)
  • In this project, I propose to quantify the extent of local adaptation in Anatomically Modern Humans by using climate-informed spatial genetic models (CISGeM) to reconstruct past population sizes, local movements, and range expansions, and thus provide a null model against which the signature of geographically-localised selection can be detected. (europa.eu)
  • On the lineage leading to the other species of Diadema, the deepest branch is composed of D. palmeri, apparently separated when the climate of New Zealand became colder and other tropical echinoids at these islands went extinct. (bioone.org)
  • While walnuts diversified in Asia and the New World, they were lost from Europe during the Pleistocene climate oscillations, with eventually only the newly formed hybrid lineage that gave rise to J. regia surviving. (sciencedaily.com)
  • The northern spotted owl and the Mexican spotted owl inhabit geographically separate locations with different climates and ecosystems. (lumenlearning.com)
  • BECC researchers study how direct and indirect human impacts on the climate and ecosystems influence biodiversity and ecosystem functioning from local to global scales, and how knowledge about these dynamics may inform mitigation and adaptation decisions in the face of such changes. (lu.se)
  • BECC focuses on three Grand Challenges that must be tackled to assess the combined consequences of anthropogenic emissions, climate and land-use change on biodiversity and ecosystem services and provide a basis for informed societal responses, with a focus on critical changes in forest, agricultural, urban and arctic ecosystems, including interactions between terrestrial and aquatic systems. (lu.se)
  • Climate change is considered to have a significant impact on allochrony-in particular, seasonal breeding species. (wikipedia.org)
  • You've probably heard about climate change, but do you know how it will impact Bay Area birds? (goldengateaudubon.org)
  • As the Earth progressively warms with climate change, species that are not able to adapt to shifting temperatures will be propelled towards extinction. (columbia.edu)
  • This knowledge is essential for developing strategies to mitigate the negative impacts of climate change and other disturbances. (freescience.info)
  • Sea turtles are ancient species currently facing anthropogenic threats including climate change, fisheries, and illegal hunting. (fmach.it)
  • However, current and future genomic adaptive responses to climate change have only begun to be addressed worldwide. (luomus.fi)
  • Understanding how modern biological communities have assembled historically in response to past climate change becomes a necessary step to estimate their current climatic tolerances and model reliably how they will be affected by future scenarios of global change. (luomus.fi)
  • This mobility allows animals to respond to changing environmental conditions, such as climate change, by migrating to new areas or adapting to new niches. (microbiologynote.com)
  • This period was characterised by a profound change in climate, as the Earth shifted from a greenhouse to an icehouse state, and known as a time of large-scale extinction and floral and faunal turnover. (elisebiersma.com)
  • Our first research in the effects of climate change focussed on the effects of temperature on fertilization success found that temperature-induced change in swimming speeds of sperm and larvae were due to thermal changes in water viscosity, not temperature-related shifts in physiology. (gu.se)
  • negative, but also neutral, and (in some individuals) positive effects of climate change on fertilization success (Schlegel et al 2012). (gu.se)
  • that indirect effects, mediated through the food web, can completely offset the direct effects of climate change in seagrass beds, and that trophic complexity can strongly reduce the impacts of climate change. (gu.se)
  • I am also interested in understanding how alpine plant communities respond to climate change. (lu.se)
  • [ 7 ] Climate change and appearance of carnivorous and omnivorous species in new regions is having an influence on distribution of the various Trichinella species. (medscape.com)
  • 2023) Past climate-driven range shifts structuring intraspecific biodiversity levels of the giant kelp (Macrocystis pyrifera) at global scales. (sb-roscoff.fr)
  • Such tools are very timely, given the ever-increasing availability of large genetic datasets thanks to the decreasing cost of genotyping and sequencing in both model and non-model organisms. (europa.eu)
  • Genetic resources of macroalgae: Development of an efficient method using microsatellite markers in non-model organisms. (sb-roscoff.fr)
  • Although this has long been recognised as a driving force for speciation in larger organisms, it is now also shown to be an important force for speciation in microbial species. (elisebiersma.com)
  • It is therefore generally thought that they lack the biogeographic structure and the clear speciation patterns found in larger organisms . (elisebiersma.com)
  • The relationships of groups of organisms as reflected by their genetic makeup. (lookformedical.com)
  • This reduction was most probably caused by rapid changes in climate and by the appearance of humans at the end of the Pleistocene. (groms.de)
  • Additionally, we find that Pleistocene climate oscillations have had a dramatic influence on the demographics of all species but were most pronounced in regions of smaller geographic area. (scilifelab.se)
  • The impact of Pleistocene glaciations and environmental gradients on the genetic structure of Embothrium coccineum. (sb-roscoff.fr)
  • Conclusions Overall, our results suggest a speciation event that occurred during the Pliocene-Pleistocene transition. (researchsquare.com)
  • Dating this divergence reveals a link to the Plio-Pleistocene transition that was characterized by low ocean temperatures and rapid climate and oceanographic oscillations, that also had major impacts on biogeographic and phylogeographic patterns of marine species elsewhere. (sun.ac.za)
  • The area of medicine concerned with the effects on health and disease due to geographic factors such as CLIMATE , environmental conditions, and geographic location. (lookformedical.com)
  • One unusual weevil species lives only in the marine littoral zone and is currently undergoing further speciation. (memphis.edu)
  • This study revealed unknown diversities and possibilities of cryptic speciation. (sun.ac.za)
  • It was projected to the climate of the last glacial maximum (LGM) to infer the candidate source area of colonisation. (authorea.com)
  • Biologists think of speciation events as the splitting of one ancestral species into two descendant species. (lumenlearning.com)
  • In addition, we delimited the traditionally defined P. erythaca into two full species, P. erythaca in the Asian mainland and P. owstoni on the island of Taiwan, based on both genetic and behavioural evidences. (ntnu.edu.tw)
  • The genetic pattern is influenced by a phylogeographic break located between Hondeklip Bay and Kleinzee. (sun.ac.za)
  • The presence in nature of hybrids between similar species suggests that they may have descended from a single interbreeding species, and the speciation process may not yet be completed. (lumenlearning.com)
  • The book "Philippine Biodiversity: Principles and Practice" (Catibog-Sinha and Heaney, 2006) illustrated a number of hypothetical scenarios that have affected the process of speciation, or the evolution of new and distinct species, in the Philippines throughout the ages. (fpe.ph)
  • My principal research project involved understanding how species' genetic systems regulated the evolution and speciation of North America's largest and most widespread lizard genus. (voteclimateone.org.au)
  • Over time, if genes are not exchanged, genetic differences arise in each population. (wikipedia.org)
  • For example, by examining the coevolution of camouflage in prey animals, biologists can gain insights into predator-prey dynamics and understand how certain adaptations enhance survival rates, leading to speciation. (freescience.info)
  • The period, associated with colder and drier climates , also marks the onset of a global expansion of open terrestrial landscapes , in which P. borealis currently thrives. (elisebiersma.com)
  • A temporal and spatial study of genetic structure in four species of bladed Bangiales (Rhodophyta) from the southeastern Pacific coast of Chile. (sb-roscoff.fr)
  • This made it possible to investigate how mammoths became adapted to a life in cold environments and to what extent these adaptations evolved during the speciation process. (scitechdaily.com)
  • Speciation follows the biological species concept , in which species are defined as a genetically isolated group that can only interbreed with itself. (atarsurvivalguide.com)
  • ENGLISH ABSTRACT: South Africa‟s sandy shores are listed as some of the best studied in the world, however, most of these studies have focused on documenting biodiversity and the classification of beach type and there is a distinct lack of genetic data. (sun.ac.za)