Articles tagged with Inbreeding
Scientists from Michigan Technological University found that inbred wolves on Isle Royale National Park are struggling, leading to a significant drop in wolf predation rates and a doubling of the moose population. The researchers attribute this decline to genetic inbreeding caused by the introduction of a single immigrant wolf in 1997.
Advanced DNA sequencing technologies have improved the accuracy of measuring inbreeding in wild populations. The study revealed that inbred individuals were more likely to suffer from lung parasite infection, highlighting a potential bigger problem than previously thought.
A new study published in PLOS ONE found that winter flounder populations in Long Island's bays are experiencing severe inbreeding due to low effective numbers of breeders. This has significant implications for fisheries management and the long-term survival of these marine fish.
Researchers at McGill University found that Leavenworthia plants regained self-pollen recognition function by taking over two other genes. This study suggests that the loss of complex traits may not always be irreversible in plants.
A study has uncovered a rare congenital deformation in an early human skull from China, suggesting high levels of inbreeding among our ancestors. The finding provides valuable insights into human evolution and population dynamics, revealing unusual population dynamics likely caused by high levels of inbreeding.
Promiscuous queen bees on Hainan Island and other locations keep their colonies healthy by maintaining a diverse gene pool. By mating with multiple males, they ensure the combination of complementary sex determination genes is kept diverse.
A study on marine turtle mating patterns reveals that a population of endangered green turtles in Northern Cyprus is protected from the disproportionate number of females being born due to global warming. The researchers found a large number of males siring offspring with multiple females, reducing the risk of inbreeding.
A new study found that red fox mothers determine which cubs disperse from the family group, with genetic relationships influencing dispersal strategy. This discovery has important implications for our understanding of social mammals' evolution and dispersal processes.
A study by the Spanish Foundation for Science and Technology found a lack of standardisation in peer review processes among Spanish scientific journals. This results in low international competitiveness, with many journals failing to meet external review requirements and having non-standard evaluation protocols.
A new study by the University of East Anglia found that inbred male sperm fertilized fewer eggs when competing with non-inbred males. Inbreeding depression revealed itself in competitive scenarios, potentially affecting conservation and captive breeding projects.
New research suggests that Charles Darwin's family was a living example of his theory on inbreeding's negative effects on offspring. The study found a positive association between child mortality and the inbreeding coefficient for Darwin's children, supporting his concerns about the risks of consanguineous marriage.
A study on the Darwin/Wedgwood dynasty found a statistical association between child mortality and inbreeding. Charles Darwin's children faced health problems, with three dying before adulthood, due to inbreeding depression.
Researchers found that inbred bumblebee colonies suffer from decreased growth rates, lower offspring production, and reduced colony survival. The presence of diploid males, produced at the expense of female workers, has a detrimental effect on colony fitness.
Researchers found that most pairs of black-legged kittiwakes avoid inbreeding more often than chance, suggesting they can detect relatives in large populations. Inbred pairs produced fewer hatching eggs and chicks with lower survival rates.
A £400,000 project is using flour beetles to experimentally evaluate the impact of inbreeding on population viability. The research aims to identify which reproductive traits are affected by inbreeding and how they can be managed or reversed to rescue endangered populations.
Researchers analyzed genetic data and found a high frequency of inbreeding among Habsburg rulers, leading to a significant increase in health problems and infant mortality. The study suggests that inbreeding was a major factor in the decline and eventual extinction of the Spanish Habsburg dynasty.
Researchers found that 58% of Isle Royale wolves exhibit congenital malformations, including lumbosacral transitional vertebrae. The condition can cause paralysis and back pain, with all dead wolves displaying bone deformities over the past 12 years.
Researchers found female termite primary queens can produce both sexually and asexually reproducing babies, mostly growing into queen successors with no inbreeding risk. Asexual reproduction allows colonies to grow faster while maintaining genetic diversity.
A study on seed beetles found that inbreeding extends male lifespan while shortening female lifespan. The researchers suggest that sex-specific selection may be the underlying cause of these differences.
A new study by Purdue University researchers found that inbreeding is not responsible for the high incidence of malformation among salamanders. The study of 2,000 adult and juvenile salamanders revealed an 8% rate of deformities, including missing or extra digits, similar to those seen in frog species.
Female spotted hyenas prefer to mate with 'new arrivals' and males that have built friendly relationships, driving males to choose groups with high numbers of young females. This leads to a dispersal of males due to the higher availability of receptive females elsewhere.
Researchers found that individuals preferred mating with unfamiliar close kin rather than non-kin due to parental cooperation. This led to more cooperative and resource-invested parenting among related parents compared to non-related ones.
A study in PLOS ONE finds that genetically variable wolves are more likely to be recruited into the breeding population, reducing the negative effects of inbreeding. This means the accumulation of inbreeding's negative effects will occur much slower than previously believed.
Chemical cues from fathers may be delaying the onset of sexual maturity in daughters as part of an evolutionary strategy to prevent inbreeding. Researchers found that girls without fathers matured approximately three months before those whose fathers were present, with urban environments also linked to earlier menarche.
A study found that maximum avoidance inbreeding strategies can help reduce population crashes and extinction risk when released into the wild. This approach is more effective than limited inbreeding for certain species.
A recent study by Kansas State University researchers found that birds cheat on their mates to avoid inbreeding and increase genetic diversity. In a collaborative study of three shore bird species, the team discovered that infidelity rates are significantly lower than those observed in songbirds.
Researchers found mostly beneficial gene substitutions in fruit fly Drosophila, but mostly detrimental substitutions in mustard weed Arabidopsis. The study attributes this difference to the Arabidopsis mating system of partial self-fertilization, which reduces effective population size and increases deleterious mutations.
A study by University of Georgia and New Zealand Forest Research Institute found seven genes causing pine tree death due to inbreeding. Inbred trees suffer from slow growth, deformities, and sudden deaths before maturity.