A study published in PLOS ONE estimates that both island species were isolated around the same time, approximately 250,000 years ago. The researchers suggest that a moderate-sized ancestral population could reconcile differences in gene divergence patterns among the species.
A new ecological study identified a correlation between evolved species' traits and susceptibility to becoming threatened or invasive. The researchers analysed over 8900 legume species and found that certain traits are more predictive of a species' fate.
A new family tree of all British birds provides clues about which species might be endangered next, with declining populations clustered together on the same branches. The study found a link between closely related birds and chances of population decline, but also noted that geographical area inhabited by species is not a key factor.
A recent study published in Science Cornell College biology professor Marty Condon and coauthors discovered multiple new species of fruit flies with overlapping niches, exceeding previous expectations. The research found a greater specialization in plant feeding among herbivorous insects than previously thought.
Malagasy mouse lemurs use advertising calls to attract mates of their own species, ignoring those of similar but different species. This unique communication method helps prevent hybridization and ensures genetic purity.
A new analysis maps the best remaining habitats for thousands of rare species in Madagascar, a biodiversity hotspot with over 2,300 endemic species. The study prioritizes regions most vital for saving the greatest number of species, including lemurs and other unique species.
A recent study identifies seven regions where non-native freshwater fish species make up over a quarter of the recorded species, highlighting the need for surveillance and precautionary measures. The research suggests that human economic activities are the main driving factor behind exotic species invasions in these regions.
Research suggests that increased competition between species for resources limits new species evolution, with rates of speciation slowing down over time. Studies analyzed bird family phylogenies and found a decrease in new species formation as the number of competitors increases.
Researchers develop new method to measure biodiversity, finding that most species have limited impact on ecosystem diversity. The study reveals that 'attractor' species promote biodiversity in tropical rainforests, while 'repellent' species have a negative effect.
A unique DNA gene, matK, has been identified as a potential 'barcode' for plants, allowing for easy identification and cataloging of different species. This discovery could lead to new methods for identifying plant ingredients in traditional medicines and monitoring endangered species.
A new study reveals that human economic activity is a primary driver of invasive fish species in rivers and lakes. The research found no correlation between native species and invasive species, highlighting the need for conservation efforts to protect aquatic ecosystems.
Scientists have discovered significant populations of new, rare, and threatened species in Ghana's Atewa Range Forest Reserve, underscoring the area's high biological diversity. The findings include Critically Endangered frog and butterfly species, as well as eight new species of katydids.
Researchers from the University of Bayreuth and Helmholtz Centre for Environmental Research found that Alpine summit vegetation is becoming increasingly homogenized due to climate change. This has led to an increase in species diversity within individual areas, but a decline in regional biodiversity across ecosystems.
The marsh frog outcompetes indigenous species due to its faster growth rate, longer lifespan, and higher fertility. This displacement process threatens the extinction of native water frog species.
Researchers have completed the genomes of ten new fruit fly species, providing a comprehensive understanding of their evolution over 60 million years. The study also identified 1193 new genes and 414 corrected previously catalogued genes across the twelve closely related species.
Research finds that female bird species develop a sexual preference for males of their own species, driven by genes on the sex chromosome inherited from the father. This discovery sheds light on how new species are formed and may explain the existence of new species despite occasional hybridization.
A new UC Davis study explores how competition among genetically varied plants relates to species diversity, finding that diversity within a species is necessary for maintaining diversity among species. The research also highlights the importance of preserving biodiversity in plant communities.
Research finds cryptic species hiding in plain sight across all major branches of the animal kingdom, defying geographical and taxonomic expectations. DNA analysis reveals genetic divergence among similar-looking animals, highlighting a significant underestimation of global biodiversity.
Research reveals that butterfly mimicry benefits both species involved, as predators avoid eating the most unpalatable species but still learn to distinguish between them. The study provides insight into how insects evolve to resemble one another and change their behavior.
Researchers found that drought sensitivity is a key factor shaping tropical plant species distribution patterns, with denser plants on wetter sides and fewer on drier ones. This study provides new insights into the importance of water availability in shaping tropical forest ecosystems.
Ecologists and philosophers protest a new definition of 'endangered species' that could weaken the federal Endangered Species Act of 1973. The new definition limits endangered species to those at risk of extinction within their current range, which may hinder conservation efforts for species like wolves, grizzly bears, and jaguars.
A new study by University of Minnesota researchers found that excess nutrients and water can reduce species diversity in ecosystems, allowing a few species to dominate. The findings support the idea that plant diversity is directly related to limiting factors such as soil moisture and nutrient availability.
Researchers analyzed DNA data from mammal and bird species in the Americas to find speciation occurs faster in temperate zones than tropics. This is due to a higher turnover of species in temperate areas, resulting in more new species emerging.
Scientists have discovered a new species of clouded leopard found only in Borneo and Sumatra, characterized by distinct physical features. The genetic analysis revealed significant differences between the two species, with around 40 nucleotide variations, suggesting divergence around 1.4 million years ago.
A new species of snapper, Lutjanus alexandrei, has been discovered in the Abrolhos region of Brazil's South Atlantic Ocean. The species was previously mistaken for a dog snapper and was found to have distinct markings and color.
A new study reveals that a plant pathogen played a key role in allowing non-native grasses to invade California, dramatically changing the state's vast grassland ecosystem. The research suggests that diseases can facilitate the invasion of exotic species, which threatens biodiversity and ecological function.
Researchers identified a third native North American bamboo species, Arundinaria appalachiana, which differs from other two species in dropping its leaves in the fall. This discovery was made by Iowa State University botanists Lynn Clark and Jimmy Triplett, along with their colleague Alan Weakley.
Researchers have assembled a genetic portrait of birdlife in the U.S. and Canada, identifying 15 new species that are nearly indistinguishable from human eyes and ears. The team also successfully logged DNA attributes of 87 bat species of Guyana, revealing six new species.
The US shortnose sturgeon population has increased by over 400 percent in the Hudson River since the 1970s, marking a rare recovery of an endangered species. The study suggests that protection and conservation efforts can lead to successful recoveries, even in areas with high human activity.
A new study found that human preferences for certain penguin species could impact their survival, with warm colors like red and yellow being more popular among humans. The research, conducted by University of Washington conservation biologist David Stokes, suggests that public opinion may play a significant role in conservation decisions.
Chris Austin, an LSU molecular genetics lab expert, discovered a new lizard species in Borneo through extensive field research and DNA analysis. The species was confirmed by comparing its genetic variations with closely related species.
A new study reveals that human behavior can trigger a 'rarity effect' in endangered species, driving them into an extinction vortex. This phenomenon resembles the Allee effect, where low population densities increase extinction risk. The pursuit of rare species for luxury items or social status exacerbates this effect.
Researchers analyzed mitochondrial genes of 70 lemurs suspected of being different species due to striking coat colors, finding they belonged to the same Microcebus griseorufus species. Genetic analysis revealed no significant differences among them, suggesting that morphological variations may not necessarily indicate distinct species.
A global study has found that pinpointing rare bird species isn't a reliable way to assume where other endangered animals occur. The research gathered data on 9,626 bird species, 4,104 mammal species, and 5,619 amphibian species to show that closer examination is needed for conservation efforts.
Researchers found that three sunflower species arose from hybridization have massive proliferation of genetic elements, contradicting theory for diploid species. This discovery provides insight into the activation and proliferation of transposable elements in plants, particularly under abiotic stress conditions.
A prolific parasite is shaping the destiny of a species it doesn't infect by medling with its host's sexual behavior. The parasite, Wolbachia, has been found to cause a change in the sexual behavior of a species that is not infected, potentially contributing to evolutionary pressure.
A study in Heliconius butterflies reveals that a single 'supergene' controls the variation of their wing patterns. The researchers found that this supergene region, responsible for producing diversity in color patterns, is conserved across three species.
Researchers analyzed 22 multispecies plans and found that 41% of covered species were unconfirmed. This lack of data can lead to nonuniform land use, posing a threat to protected species.
The study analyzes data on 9,500 bird species and finds that most have small geographic ranges, while the northern hemisphere shows high variation. Biodiversity peaks in tropical regions, and there's a link between species richness and range size, with high biodiversity areas having smaller ranges.
Researchers successfully created a hybrid butterfly species in the lab, with offspring exhibiting traits from both parent species. The discovery sheds light on the rare phenomenon of homoploid hybrid speciation in animals and has implications for our understanding of species formation.
In Lake Victoria cichlid fish, females choose brightly coloured males for good reasons: fewer parasites and better health. The colour preference leads to speciation as only the brightest red and blue fish survive, eventually forming two separate species.
Researchers at Indiana University found that plant species can be just as easily divided into categories as animal species, contrary to previous claims. The study also revealed that many bird and fish species successfully hybridize in the wild, while ferns are less likely to produce fertile hybrids.
Researchers found that harmless frogs can look like less toxic species without losing protection from predators through stimulus generalization. This discovery challenges traditional mimicry theory and reveals a new mechanism involved in mimicry processes.
A new study identifies areas with potential species extinction risk, highlighting the need for proactive conservation efforts. Researchers found that many species currently deemed safe could leapfrog into high threat categories, emphasizing the importance of protecting vulnerable species before they become endangered.
Researchers have identified three new species of lemurs, expanding our knowledge of these endangered animals. The study, published in BMC Evolutionary Biology, uses genetic analysis to reveal distinct species characteristics, shedding light on the importance of conservation programs for lemurs native to Madagascar.
The Invasive Species Forecasting System (ISFS) uses NASA satellite data to predict and manage the spread of invasive plant species like saltcedar, which is damaging water supplies. Land managers can generate color-coded maps to help combat the spread of these species.
The study highlights the limitations of using surrogate animals to predict endangered species decline, arguing that target species are more relevant. The authors advocate directly examining the target species before resorting to substitute animals.
A new theory explains tropical rain forests' rich biodiversity and community assembly patterns. The theory proposes that abundant species regulate themselves to make room for others, regulating dynamics and permitting coexistence.
Researchers highlight difficulties in using substitute species, citing the need for direct examination of target species. The study concludes that surrogate species are not a viable solution to conserve endangered species.
A recent study on African bird fauna found that large-scale patterns of species richness and endemism are robust to changes in species concepts. The analysis identified complexity within long-recognized centers of endemism, with certain areas acting as 'species pumps'.
A study by Penn State researchers found that invasive brushy honeysuckle hybridized with the Rhagoletis pomonella fruit fly, creating a new insect species. The discovery suggests that hybridization is a common mechanism for speciation in animals, similar to what occurs in plants.
Estimates for the number of living species on earth range from 3.5 million to over 30 million, but only 1.9 million have been classified and described. A new study uses the species-area effect to estimate historical biodiversity in the fossil record, finding a strong relationship between species richness and geographic area.
Researchers found that sponges produce bioactive substances in response to competition, which is crucial for developing new drugs. However, the growth rates of cultivated species are slow and unpredictable, resulting in lower substance production compared to natural counterparts.
Researchers find specific shapes of amyloid fibrils, not amino acid sequences, determine prion infectivity across species. This breakthrough offers insights into the mechanisms behind prion diseases and potential transmission between previously separate animals.
The study found that species listed under the Endangered Species Act for a longer period were more likely to improve in status and less likely to decline. Additionally, species with critical habitat designation and dedicated recovery plans tended to fare better in terms of conservation status.
The Laupala cricket's unique courtship songs play a crucial role in its rapid speciation, resulting in the formation of new species. This phenomenon sheds light on the role of individual choices in shaping species evolution and biodiversity.
The National Invasive Species Council (NISC) partners with NASA to improve invasive species management. NASA provides Earth observations and predictive models to enhance partner abilities, improving accuracy and timeliness of predictive maps and plant species distribution forecasts.
In two harvester ant populations, queens and workers from the same colonies are genetically very different, with only queens coming from pure species-specific lineages. The ants have committed to a hybrid workforce strategy, relying on interspecific hybrid workers for survival.
The Arunachal macaque is a new species of macaque found in India's Northeast, with its name meaning 'deep-forest monkey' in local vernacular. Further studies will determine if it should be included on the IUCN Red List and protected under Indian law.
A global assessment of amphibian populations reveals that nearly one-third of species are threatened with extinction, with many more considered vulnerable. Key drivers of decline include habitat destruction, air and water pollution, and climate change.