Researchers examined 203 samples from 12 key targeted species collected from various importers, processing plants and retailers in Ontario. Of the samples, 141 were from retailers, 51 from importers and 11 from processing plants. The findings revealed 32 per cent of the samples overall were mislabelled. The mislabelling rate was 17.6 per cent at the import stage, 27.3 per cent at processing plants and 38.1 per cent at retailers.
Amphipods of the species Gammarus roeselii guard their chosen mates, often carrying them with them for days and defending them against potential rivals. This behavior requires a lot of time and energy, so that the males make their choice with care. Scientists at Goethe University have now investigated under which circumstances males are prepared to revise their decision.
A new study has revealed how a group of deep-sea microbes provides clues to the evolution of life on Earth, according to a recent paper in The ISME Journal. Researchers used cutting-edge molecular methods to study these microbes, which thrive in the hot, oxygen-free fluids that flow through Earth's crust.
A Duke-led study provides the first record of the diving behavior of Cuvier's beaked whales in US Atlantic waters. The species is Earth's deepest-diving mammal but spends very little recovery time at the surface. The new data, from 5,926 dives recorded off Cape Hatteras, N.C., shows them routinely diving more than a mile while holding their breath for over an hour. These whales push the limits of mammalian physiology.
Variations in a single gene in a tiny fish alter how they interact with their environment, according to research led by the University of Pennsylvania's Seth Rudman, a postdoctoral researcher. The study represents a strategy for uncovering, and perhaps even predicting, the ecological implications of evolutionary change.
Researchers have developed an artificial intelligence (AI) program that can automatically provide species-level identification of microscopic marine organisms. The next step is to incorporate the AI into a robotic system that will help advance our understanding of the world's oceans, both now and in our prehistoric past.
Corals lurking in deeper, darker waters could one day help to replenish shallow water reefs under threat from ocean warming and bleaching events, according to researchers. The University of Queensland and the ARC Centre of Excellence for Coral Reef Studies examined corals from the ocean's 'twilight zone' at depths below 30 metres.
Scientists just discovered six new species of bristlenose catfish in the Amazon. In an evolutionary move that takes 'catfishing' to a whole new, kind of sweet level, the males have tentacled faces to attract females. The tentacles look like eggs, and when females see a male with a tentacled face, they see a good potential father. The discovery of these new species might pave the way for conservation work in the Amazon.
Sand fiddler crabs that reside in a burrow usually prevail if challenged by another, intruding crab, provided their claw pinching strength is similar to that of the competing crab, a study suggests.
Ever since Darwin first set foot on the Galapagos, evolutionary biologists have long known that the geographic isolation of archipelagos has helped spur the formation of new species. Now, an international research team led by Theresa Cole at the University of Otago, New Zealand, has found the same holds true for penguins. They have found the first compelling evidence that modern penguin diversity is driven by islands, despite spending the majority of their lives at sea.