Artificial light at night also makes guppies more courageous during the day, according to a behavioural study led by researchers from the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) and the Max Planck Institute for Human Development.
Hookworms exploit a live fast/die young strategy in their South American fur seal pup hosts, report Morris Animal Foundation-funded researchers at the University of Georgia. As a result, they often kill their host, rather than finding a happy equilibrium. Scientists are concerned that this type of hookworm infection could eventually pose a risk to critically endangered populations of fur seals.
A global study addresses a major uncertainty in how saltmarshes and mangroves will respond to sea-level rise; stresses importance of preserving 'accommodation space' for landward migration.
Despite many decades of annual brook trout stocking in one northcentral Pennsylvania watershed, the wild brook trout populations show few genes from hatchery fish, according to researchers who genotyped about 2,000 brook trout in Loyalsock Creek watershed, a 500-square-mile drainage in Lycoming and Sullivan counties celebrated by anglers for its trout fishing.
These gentle giants, which can grow up to 10 m in length, have been recorded jumping out of the water as high and as fast as great white sharks. Marine biologists are unsure why they do this, but have pointed to this phenomenon as evidence of how much we still have to learn about marine life.
Traditional artisanal fishing has been harmed by EU fishing policies that favor big businesses and ignores other more sustainable approaches to conserving fish stocks, according to new research from the University of Kent. This is the main finding of research by Dr. Alicia Said, Professor Douglas MacMillan, and Dr Joseph Tzanopoulos of the School of Anthropology and Conservation (SAC) published in the world-leading open-access journal Frontiers in Marine Sciences.
A new study published in the journal River Research and Applications provides insight into the magnitude of the effect this waterfall has on endangered fishes in the San Juan River. From 2015-2017 more than 1,000 razorback sucker and dozens of Colorado pikeminnow were detected downstream of the waterfall. Some fish moved to this location from up to 600 miles away in the Colorado River.
A comprehensive analysis of Mesosaurus fossils shows that bones from adults share similarities with land-dwelling animals -- suggesting older Mesosaurus were semi-aquatic, whereas the juveniles spent their time in the water. This new research emphasizes the importance of thoroughly analyzing fossilized remains from across all stages of a reptile's life to get a full appreciation of its lifestyle and behavior.
Researchers from the Minnesota Aquatic Invasive Species Research Center recently published a new paper predicting the risk of starry stonewort invasion in Minnesota and Wisconsin.
Researchers have long questioned what impact climate change has on the rate at which corals are growing and building reef habitats in the Florida Keys. A new study from the University of North Carolina at Chapel Hill explored this topic, finding both good and bad news. The rate of coral skeletal growth in the Florida Keys has remained relatively stable over time, but the skeletal density of the region's corals is declining, possibly due to ocean acidification.