The roundworm C. elegans avoid dead worms using special nerve cells. Sensing death makes them have babies sooner, but shortens their lives. 🪱💀👶⏳
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#CElegans #RoundwormResearch #NerveCells #EvolutionaryBiology #BehavioralEcology
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#CElegans #RoundwormResearch #NerveCells #EvolutionaryBiology #BehavioralEcology
Current Biology
Modulation of C. elegans behavior, fitness, and lifespan by AWB/ASH-dependent death perception
Hernandez-Lima et al. show that C. elegans responds to the presence of dead conspecifics
with aversive behavior and a reduction in fitness and lifespan. This response is mediated
by glutamate- and acetylcholine-dependent signaling through AWB and ASH sensory…
with aversive behavior and a reduction in fitness and lifespan. This response is mediated
by glutamate- and acetylcholine-dependent signaling through AWB and ASH sensory…
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Thousands of fossils discovered in California’s La Brea tar pits reveal that mammals 🐘 and birds 🦅 did not exhibit any evolutionary changes in response to climate 🌎 fluctuations over the last 50,000 years.
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#LaBreaTarPits #FossilDiscovery #EvolutionaryBiology #ClimateChange #MammalResearch
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#LaBreaTarPits #FossilDiscovery #EvolutionaryBiology #ClimateChange #MammalResearch
Cambridge Core
Reevaluating climate change responses in Rancho La Brea birds and mammals: new dates and new data | Paleobiology | Cambridge Core
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Long Shot Science Leads to Revised Age 🕰️🔬 for Land-Animal Ancestor 🦕🌍
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#LongShotScience #LandAnimalAncestor #EvolutionaryBiology #FossilDiscovery #ResearchBreakthrough
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#LongShotScience #LandAnimalAncestor #EvolutionaryBiology #FossilDiscovery #ResearchBreakthrough
www.jsg.utexas.edu
Longshot science leads to revised age for land-animal ancestor
The fossil of the Westlothiana lizziae, which was found in the East Kirkton Quarry in West Lothian, Scotland. Photo: National…
Tomatoes in the Galápagos 🍅🌿 are de-evolving. They found that plants on eastern islands produced the same alkaloids found in modern tomatoes. But on western islands, the tomatoes were churning out a different version with the molecular fingerprint of eggplant relatives 🍆 from millions of years ago.
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#GalapagosTomatoes #EvolutionaryBiology #BotanicalResearch #PlantGenetics #NatureScience
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#GalapagosTomatoes #EvolutionaryBiology #BotanicalResearch #PlantGenetics #NatureScience
University of California, Riverside
Tomatoes in the Galápagos are de-evolving
Wild-growing tomatoes are on the black-rock islands of the Galápagos are doing something peculiar. They’re shedding millions of years of evolution, reverting to a primitive genetic state that resurrects ancient chemical defenses.
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**Groundbreaking study suggests the Cambrian explosion of life 🌊🦠 might have actually started millions of years earlier than we thought. Researchers uncovered evidence of complex, mobile organisms 🐚💫 thriving 545 million years ago, well before the traditionally accepted timeline.**
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#CambrianExplosion #Paleontology #AncientLife #EvolutionaryBiology #FossilDiscovery
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#CambrianExplosion #Paleontology #AncientLife #EvolutionaryBiology #FossilDiscovery
Actualitat
L’explosió cambriana podria ser molt més anterior del que es pensava
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Scientists uncover dozens of genetic traits that depend on which parent you inherit them from 🧬 | Study proposes that mothers 👩👧 and fathers 👨👦 may have different evolutionary incentives when it comes to how much biological investment is made in their offspring. 🌱
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#GeneticInheritance #ParentalInvestment #EvolutionaryBiology #ScienceNews #GeneticsResearch
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#GeneticInheritance #ParentalInvestment #EvolutionaryBiology #ScienceNews #GeneticsResearch
PsyPost
Scientists uncover dozens of genetic traits that depend on which parent you inherit them from
A groundbreaking study in Nature suggests that some genes affect us differently depending on whether they’re inherited from our mother or father. Researchers identified dozens of parent-specific genetic effects related to traits like height, metabolism, and…
Because men and women share most genes, selection that favors a trait in one sex often pulls the other along (even if fitness costly). Shared traits across sexes can reflect selection in one sex and a correlated response in the other; e.g., human paternal care may reflect selection on maternal care. 👨👩👧👦🔬✨
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#GeneticSelection #SexualDimorphism #PaternalCare #EvolutionaryBiology #TraitCorrelation
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#GeneticSelection #SexualDimorphism #PaternalCare #EvolutionaryBiology #TraitCorrelation
ResearchGate
(PDF) The shared genome constraint: why between-sex genetic correlation matters for evolutionary social science
PDF | Evolutionary social scientists propose adaptationist hypotheses that contribute significantly to our understanding of human traits. However,... | Find, read and cite all the research you need on ResearchGate
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A new study by Stärk et. al. shows that among 72% of mammals 🐾, females lived longer than males 🐻, with an average female ALE advantage of 12% 📈. This was attributed to heterogametic sex, sexual selection 💖, and different roles in parental care 👶.
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#MammalLifeSpan #SexDifferences #ParentalCare #EvolutionaryBiology #FemaleAdvantage
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#MammalLifeSpan #SexDifferences #ParentalCare #EvolutionaryBiology #FemaleAdvantage
Fascinating World Media
The Evolutionary Reasons For Why Women Live Longer Than Men
You may have noticed how women often outlive men by a considerable margin. In fact, according to the Centers For Disease Control and
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A new study has found about half of the variation seen in modern dogs 🐶 existed during the Stone Age 🗿, challenging conventional wisdom that this diversity mostly emerged during the Victorian era.
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#DogDiversity #StoneAgeResearch #AnimalBehavior #EvolutionaryBiology #CanineHistory
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#DogDiversity #StoneAgeResearch #AnimalBehavior #EvolutionaryBiology #CanineHistory
BBC News
Our dogs' diversity can be traced back to the Stone Age
A new study suggests their physical transformation began much earlier than we previously thought.
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A study finds that one microbe, a member of the Archaea, tolerates a little flexibility in interpreting the genetic code, contradicting a 60-year-old doctrine. 🦠📜🔬✨
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#microbes #Archaea #geneticresearch #sciencebreakthrough #evolutionarybiology
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#microbes #Archaea #geneticresearch #sciencebreakthrough #evolutionarybiology
Berkeley News
All life copies DNA unambiguously into proteins. Archaea may be the exception. - Berkeley News
A study finds that one microbe, a member of the Archaea, tolerates a little flexibility in interpreting the genetic code, contradicting a 60-year-old doctrine.
Italian bears living near villages have evolved to be smaller and less aggressive 🐻🏡, finds study, as centuries of close contact with humans reshaped their evolution, reducing genetic diversity and favoring behavioral traits that limit conflict in an isolated Apennine population.
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#ItalianBears #WildlifeConservation #HumanWildlifeConflict #AnimalBehavior #EvolutionaryBiology
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#ItalianBears #WildlifeConservation #HumanWildlifeConflict #AnimalBehavior #EvolutionaryBiology
OUP Academic
Coexisting With Humans: Genomic and Behavioral Consequences in a Small and Isolated Bear Population Open Access
Abstract. Climate and land use change have increased human–wildlife interactions, potentially reducing wild species density and prompting behavioral adapta
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Gut bacteria shown to evolve differently in industrialized vs non-industrialized regions, with one adaptation aiding in the digestion of highly processed foods, suggesting rapid evolutionary responses to diverse diets 🌍🦠🍔📈
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#GutHealth #Microbiome #EvolutionaryBiology #ProcessedFoods #DietDiversity
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#GutHealth #Microbiome #EvolutionaryBiology #ProcessedFoods #DietDiversity
UCLA
Gut bacteria have evolved rapidly to digest starches in ultra-processed foods
UCLA study finds gut microbes are evolving differently in industrialized and non-industrialized parts of the world.
Neanderthal nose wasn't adapted to cold climates ❄️👃
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#NeanderthalNose #EvolutionaryBiology #HumanAncestry #Adaptation #Paleoanthropology
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#NeanderthalNose #EvolutionaryBiology #HumanAncestry #Adaptation #Paleoanthropology
SciSuggest
Neanderthal nose wasn't adapted to cold climates
The exceptionally well-preserved nasal cavity of this over 130,000 year old Neanderthal skull wasn't specially adapted for cold
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Jellyfish sleep like humans 💤 — even though they don’t have brains. The findings bolster a theory that sleep evolved, at least in part, to protect the DNA 🧬 in individual nerve cells, helping to repair damage that builds up while animals are awake.
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#JellyfishSleep #AnimalBehavior #SleepScience #Neuroscience #EvolutionaryBiology
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#JellyfishSleep #AnimalBehavior #SleepScience #Neuroscience #EvolutionaryBiology
Nature
Jellyfish sleep like humans — even though they don’t have brains
Nature - Studying ancient sea creatures’ snoozing habits could shed light on the origins of sleep.
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Science News
Primates’ same-sex sexual behaviour ‘may reinforce bonds amid environmental stress’ 🌍💞. Behaviour among non-human species could help keep groups together in face of social challenges, says study. Same-sex sexual behaviour was found in 59 non-human primate…
🐒 Same-sex sexual behaviour in primates is widespread, seen in 59 species like chimpanzees and gorillas, suggesting ancient evolutionary roots or multiple independent origins.
🌿 It's more common in species facing environmental stress, such as drier climates with scarce resources and higher predator risk.
🤝 This behaviour appears to strengthen bonds, reduce tension, and help societies navigate challenges.
🐒 The study suggests early human ancestors may have also exhibited similar behaviour due to comparable societal pressures.
#PrimateBehavior #EvolutionaryBiology #AnimalScience
🌿 It's more common in species facing environmental stress, such as drier climates with scarce resources and higher predator risk.
🤝 This behaviour appears to strengthen bonds, reduce tension, and help societies navigate challenges.
🐒 The study suggests early human ancestors may have also exhibited similar behaviour due to comparable societal pressures.
#PrimateBehavior #EvolutionaryBiology #AnimalScience
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Women's libido drops during a specific phase of the menstrual cycle. This reduction in desire may serve an evolutionary function by lowering the risk of infection during a time when the body’s immune system is naturally suppressed.
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#WomensLibido #MenstrualCycle #CyclePhase #EvolutionaryBiology #ImmuneSystem
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#WomensLibido #MenstrualCycle #CyclePhase #EvolutionaryBiology #ImmuneSystem
PsyPost
Women’s libido drops during a specific phase of the menstrual cycle
New research suggests women experience a distinct dip in sexual desire during the implantation window. Scientists believe this decrease may be an evolutionary adaptation to protect the body from infection when the immune system is naturally suppressed.
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Baby leaffooted bugs must play ‘game of roulette’ to find survival partners before time runs out. They must acquire their obligate bacterial symbiont from the soil within a tight developmental window, or they experience a permanent collapse in survivorship and physical development.
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#InsectSymbiosis #SoilMicrobiome #EvolutionaryBiology
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#InsectSymbiosis #SoilMicrobiome #EvolutionaryBiology
EurekAlert!
Baby bugs must play ‘game of roulette’ to find survival partners before time runs out
Soon after hatching, leaffooted bug nymphs must embark on an energetically costly journey from the treetops to the ground to ingest a bacterial symbiont they need to develop successfully. Should they fail on this quest or experience delay, their chances of…
Early land vertebrates' shift from water to land didn’t require amphibian-like metamorphosis, fossils reveal
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#EarlyTetrapods #Paleontology #EvolutionaryBiology
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#EarlyTetrapods #Paleontology #EvolutionaryBiology
Science News
A textbook assumption about early land vertebrates may be wrong
Three species that lived about 308 million years ago challenge the idea that the first land vertebrates underwent amphibian-like metamorphosis.
Largest study of bat genomes and fossils shows bats originated in Europe, not Asia
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#BatGenomics #Paleontology #EvolutionaryBiology
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#BatGenomics #Paleontology #EvolutionaryBiology
news.unsw.edu.au
Bats originated in Europe, not Asia
The largest study of bat genomes and fossils pinpoints bats' origins and sheds new light on how flight and echolocation evolved.
UMass biologists discover what may be the world's loudest birds | Evolutionary drivers of vocal amplitude in birds
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#BirdVocalization #EvolutionaryBiology #Bioacoustics
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#BirdVocalization #EvolutionaryBiology #Bioacoustics
WBUR
UMass biologists discover what may be the world's loudest birds
Biologists at the University of Massachusetts Amherst have discovered what may be the world’s loudest birds. There are now three contenders for the Noisiest Bird Award, all living in Brazil. But exactly why these birds are so loud remains a mystery.
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