Spaying or neutering large-breed dogs can put them at a higher risk for obesity and, if done when the dog is young, nontraumatic orthopedic injuries, reports a new study based on data from the Morris Animal Foundation Golden Retriever Lifetime Study. The spay/neuter study was published today in the journal PLOS ONE.
A quarter of women who have serious maternal complications during childbirth also have premature births, posing a 'dual burden' on families, finds research from NYU Rory Meyers College of Nursing, the University of California, San Francisco (UCSF) California Preterm Birth Initiative, and Stanford University.
Gene identified in worms controls how resources are allocated for stress resilience, longevity and fertility.
New research brings to light for the first time the evolution of maternal roles and parenting responsibilities in one of our oldest evolutionary ancestors. Australopithecus africanus mothers breastfed their infants for the first 12 months after birth, and continued to supplement their diets with breastmilk during periods of food shortage. Tooth chemistry analyses enable scientists to 'read' more than two-million-year-old teeth. Finding demonstrates why early human ancestors had fewer offspring and extended parenting role.
For the first time, the bivalve mollusc Guyanella clenchi has been reported from Abrolhos Bank, Brazil. This small and almost unknown bivalve had previously been reported solely from the Caribbean region. Apart from being the southernmost record for the species, its presence also helps the experts to determine the way the marine fauna from the Caribbean interacts with its South American relatives. The study is published in the open-access journal Check List.
Mount Sinai researchers working as part of an international team have discovered previously unknown breastfeeding patterns of an extinct early human species by studying their 2-million-year-old teeth, providing insights into the evolution of human breastfeeding practices, according to a study published in Nature in July.
The killing of rivals' offspring represents a violent manifestation of competition, and a significant source of offspring mortality in some mammalian populations. Previous research on such infanticide has focused on males, but a new study by Dieter Lukas from the Max Planck Institute for Evolutionary Anthropology and Elise Huchard from the Institut des Sciences de l'Évolution, Université Montpellier shows that infanticide by females is also widespread across mammals and that females are likely to gain substantial benefits from it.
Injured axons instruct Schwann cells to build specialized actin spheres to break down and remove axon fragments, thereby starting the regeneration process.
Rising temperatures could mean no male loggerhead turtles hatch at a key breeding ground by the end of this century, new research suggests.
Researchers in Japan found that induction of the transcription factor stem cell inducing factor 1 (STEMIN1) in leaves directly changes leaf cells into stem cells in the moss Physcomitrella patens. This discovery of a direct stem cell inducing factor will facilitate the further elucidation of the molecular mechanisms underlying stem cell formation in land plants.