Genetic clues tell the story of Neanderthals’ decline.
The Neanderthal population shrank during a cold spell around 75 000 years ago, and the loss of genetic diversity may have contributed to their eventual extinction.
#Neanderthals #AncientHumans #Europe #Genetics #GeneticDiversity #DNA #Science
🧬 Why do second-generation crossbreed puppies often look unexpectedly different from their parents? Genetic segregation and recombination can produce outcomes that surprise even experienced breeders.
✍️ Explore the science of doodles and beyond: https://TPC8.short.gy/ZVjB8RN2
🌈 Where chaos becomes beauty, variation writes its own poetry
#Crossbreeds #DogGenetics #ScienceCommunication #Labradoodle #GeneticDiversity #TherapyDogs #Dogs #Genetics #F1F2F3 #Pets #TPC8
New AI‑driven tools are helping scientists design cross‑breeding strategies to boost genetic diversity in the endangered kākāpō. By combining machine‑learning predictions with DNA sequencing data, conservation genomics can curb species decline and prevent genetic loss. Read how open‑source tech is reshaping wildlife rescue. #AICrossbreeding #ConservationGenomics #KakapoRecovery #GeneticDiversity
🔗 https://aidailypost.com/news/ai-aids-crossbreeding-curb-decline-genetic-loss-endangered-species
Why #WildlifeCorridors are Essential for #Biodiversity and #Ecosystem Health
November 12, 2024
"Wildlife corridors serve as lifelines for biodiversity and ecosystem health. By providing a unique way to balance human development with #NatureConservation; connecting #FragmentedHabitats and allowing wildlife to move freely. So what exactly are wildlife corridors and why are they so important?
Wildlife corridors are strips of natural habitat that connect fragmented landscapes. They enable wildlife to move between isolated areas, aiding #migration, #GeneticDiversity, and survival. These corridors help mitigate the negative impacts of human development, such as #roads and #urbanisation, on animal populations.
Wildlife corridors serve many purposes, all stemming from their ability to reconnect isolated populations. By preventing habitat fragmentation, they enhance survival rates through increased food sources, cover, and reduced predation. On top of this, they protect biodiversity by enabling animals to move freely between habitat patches, reducing the risk to both wildlife and humans posed by human-made barriers.
Wildlife corridors are crucial for the survival of landscape species, which are wildlife species that need expansive areas to survive, such as tigers in India or grizzly bears in the United States. They are also vital in maintaining safe passage for birds, fish, and mammals, especially as new roads and developments create barriers to traditional feeding and breeding grounds.
These corridors can take various forms, ideally spanning 50 to 200 feet in width, providing sufficient habitat for species using them to travel, forage or nest. They offer a diverse range of habitats, enhancing the opportunities for various wildlife to thrive. Corridors can take the shape of #shelterbelts, #FieldBorders, #RiparianBuffers, and #RoadsideHabitats, each playing a unique role in providing sustenance, shelter, and travel lanes for different species.
Wildlife corridors highlight the possibility of a peaceful coexistence between humans and wildlife. Wildlife corridors help direct animals away from human settlements, reducing conflicts and minimising damage to crops and property, while ensuring the surviving and well-being of various species. Raising public awareness of these corridors is crucial for maintaining functioning natural systems on which humans also depend."
#SolarPunkSunday #Nature #Wildlife #UrbanAreas #GreenerCities
Wildlife corridors serve as lifelines for biodiversity and ecosystem health. By providing a unique way to balance human development with nature conservation; connecting fragmented habitats and allowing wildlife to move freely. So what exactly are wildlife corridors and why are they so important? Wildlife corridors are strips of natural habitat that connect fragmented landscapes. They…
【🎉Latest accepted article】
Tetraploids of an invasive clonal shrub, Lantana camara, present greater invasiveness than diploids
#Polyploidy | #ClonalGrowth | #GeneticDiversity | #PhenotypicPlasticity | #InvasionSuccess
"Italian fruit detective racing to save forgotten varieties"
"We do it because when we lose variety, we lose food security, we lose diversity and the system's ability to respond to various changes, and we also lose a lot in cultural terms."
'nuff said!
https://phys.org/news/2025-11-italian-fruit-forgotten-varieties.html
VP Symposium: Preservation of Genetic Diversity and Selection over a Century in a Coral Reef Fish (Taeniamia zosterophora) in the Philippines by Fitz et al.
Read now ahead of print!
https://www.journals.uchicago.edu/doi/10.1086/738468
Abstract Evaluating the evolutionary impacts of anthropogenic activity on populations is key to understanding species resiliency and to designing effective conservation strategies. Sequencing DNA from historical specimens provides the opportunity to establish a historical baseline and empirically assess changes in genetic diversity, changes in effective population size, and selection over time. Here, we sequenced historical and contemporary samples of the cardinalfish Taeniamia zosterophora collected in 1908 and in 2021–2022 across two sites with differing human impact in the Philippines. At both sites, genetic diversity increased over time, with contemporary samples having significantly higher Watterson’s θ than historical samples. This diversity increase was primarily attributable to positive selection on low-frequency alleles such that they increased toward intermediate frequencies through time. For the putatively neutral fraction of the genome, in contrast, there was a slight but significant decline in Watterson’s θ at both low and high human impact sites, suggesting that drift strengthened and effective population sizes declined through time. There was more evidence for selection and greater loss of neutral diversity at the site with higher human impact. Our results provide empirical evidence for the surprising preservation of genetic diversity through the action of natural selection in the face of anthropogenic impacts.
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