Articles tagged with Phylogenetics
New research challenges centuries-old scholarship on animal classification by morphology, instead favoring molecular data for a better fit with geographical distribution. Convergent evolution is found to be widespread and often misleading, with famous examples such as flight in birds, bats, and insects
Two new species of Amazonian fish have been discovered and described by Smithsonian researcher Murilo Pastana, one with vibrant red-orange fins and another that is technically a miniature fish. The species are at risk of extinction due to deforestation in the region where they inhabit.
Scientists discovered that animals likely evolved asymmetric gaits 472 million years ago, with evidence of crutching and bounding in ancient fish and crocodiles. The study suggests that many modern species have lost this ability due to evolution or size constraints.
A new molecular study of grasses reveals a clear picture of their evolutionary relationships, shedding light on the evolution of C4 photosynthesis involved in heat and drought tolerance. The research provides evidence that this type of photosynthesis evolved independently multiple times within different grass lineages.
Researchers from Harvard University have confirmed a previously unknown species as the second opabiniid to be discovered, Utaurora comosa. The ancient arthropod shares characteristics with both radiodonts and Opabinia, highlighting the complexity of Cambrian evolution.
Two new species of goby fish, Rhinogobius estrellae and Rhinogobius tandikan, have been discovered in Palawan, Philippines. The discovery expands the genus Rhinogobius' known range further south than previously seen.
Researchers have discovered the earliest known ant mimics in mid-Cretaceous Kachin amber, extending the geological range of myrmecomorphy by approximately 50 million years. The study found that these ancient organisms closely mimic different hymenopteran models during different stages of development.
Researchers used clam fossils to create a comprehensive evolutionary tree over hundreds of millions of years, revealing that a basic assumption can significantly distort the picture of which species are destroyed during mass extinctions. The study found that assuming lineages always split into two new species can push the origins of ne...
Researchers used mathematical models to reconstruct evolutionary history of photosymbiosis in Scleractinia, identifying groups where association is stable and others that may be more flexible. The study found that certain lineages are more likely to retain the reef-building trait in a changing climate.
A new species of green microalgae was identified in a reservoir in northwest São Paulo, Brazil, and reclassified into the genus Nephrocytium. The discovery was made through phylogenetic analysis and molecular sequencing, confirming that the microalga is distinct from other known species.
A study led by Ludovic Orlando found that modern domestic horses were first domesticated in the Pontic-Caspian steppes around 2000-2200 BC. The genetic profile of these horses spread rapidly across Eurasia, replacing other horse populations and facilitating their conquest of the region.
Three new species of freshwater goby fish have been identified in Japan and the Philippines, with distinct color patterns indicating separate lineages. The researchers believe that different color patterns play a crucial role in maintaining these separate lineages during courtship and mate selection.
Scientists have sequenced the Indian wolf genome, revealing it to be one of the world's most endangered and evolutionarily distinct populations. The study suggests that Indian wolves may represent the most ancient surviving lineage of wolves.
Researchers discovered six clearly distinguishable call types among neotropical river otters in Brazil, ranging from high-frequency 'chirps' to low-pitch 'growls'. This vocal complexity is intermediate between solitary and highly social otter species, providing new insights into their conservation.
A low-cost drone-based photogrammetry method has been developed to estimate plant biomass, explaining up to 47% of biomass variation in multispecies plots. The method uses aerial images and simple RGB cameras, making it a promising alternative to expensive LiDAR technology.
A method integrating phylogenetic, spatial, and bioactivity data identifies promising plant clades with high anti-infective activities. Conservation of biodiversity hotspots is reinforced by a strong correlation between species diversity and metabolite diversity.
A recent study discovered that lizards in areas frequently affected by hurricanes have larger, stronger toepads than those not exposed to such storms. This suggests that hurricanes play a significant role in shaping the evolution of lizard populations across different geographic and phylogenetic scales.
The National Science Foundation is investing in 10 new projects to research biodiversity and its interactions with climate, land use, and invasive species. The Dimensions of Biodiversity program aims to transform how we understand life on Earth by addressing multiple dimensions of biodiversity simultaneously.
A team of international scientists found that preserving phylogenetic diversity among species can preserve 18% more functional diversity than selecting species at random. However, in some areas and groups, this method was less effective, highlighting the need for further research and adaptation.
A comprehensive taxonomic summary of all recognized species of crayfish worldwide has been created. The updated classification includes five families and 38 genera, and will impact various fields such as physiology, ecology, neurobiology, conservation, and evolution.
Researchers used multiplexed shotgun genotyping to uncover species relationships within the North American genus Penstemon. The study confirms ancestral hymenoptera pollination and independent transitions to hummingbird pollination, revealing floral diversity and adaptations.
A new framework uses phylogenetic information, relevant traits, and environmental gradients to reduce incorrect conclusions about community assembly. The framework combines three approaches to test hypotheses and identify signatures of key processes.
A new pipeline combines multiple gene-finding tools to identify genetic markers for phylogenetic study from limited genomic data. The approach, MAKER2, was used to develop loci useful for phylogenetic study in the flowering plant genus Penstemon.
A team of scientists used the Hyb-Seq method to sequence hundreds of nuclear loci and plastomes from milkweeds, providing a significant advance over previous methods. This approach combines target enrichment and genome skimming to reduce genomic complexity and increase sequencing efficiency.
Researchers publish six papers detailing the anatomy of Au. Sediba, a 2-million-year-old early human ancestral remains. The study provides detailed insights into its movement patterns, dental morphology, and phylogenetic position, offering new perspectives on hominin evolution.
Researchers found that floral morphologies are less reliable than other traits in determining the relationships of papilionoid species and genera. Other morphological characteristics may indicate relationships more reliably, according to the study published in the American Journal of Botany.
Brown algae's DNA composition was examined to reorder the division Phaeophyta, resulting in a new classification of 20 orders. A new species, Sphacelaria tsengii, was also discovered with unique propagules used for asexual reproduction.