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For reef fish, tolerance for warming waters comes from their parents' DNA

For reef fish, tolerance for warming waters comes from their parents' DNA

Science
May 1 (UPI) -- New research suggests reef fish can inherit the genetic tools to adapt to rising water temperatures.In lab tests, scientists found the offspring of parents who were exposed to water temperatures increases were better able to adapt water temperatures increases than fish spawned by parents exposed to stable temperatures."When parents are exposed to an increase in water temperature, we found that their offspring improved their performance in these otherwise stressful conditions by selectively modifying their epigenome," Philip Munday, researcher with the ARC Centre of Excellence for Coral Reef Studies and James Cook University, said in a news release.Epigenetic changes in the DNA are biochemical changes that alter the expression of genes, causing certain genes to be turned on o...
Fish farming can help relieve pressures on land resources, study shows

Fish farming can help relieve pressures on land resources, study shows

Science
April 30 (UPI) -- As population growth accelerates in much of the world, demands for meat are putting added pressure on natural resources. New research suggests some of the pressure can be relieved by fish farming.Scientists with the United Nations' Food and Agriculture Organization estimate an additional 10 billion people will be hungry for protein by 2050 and that a 52 percent increase in animal production will be required to meet their needs.According to the latest calculations by researchers at the University of California, Santa Barbara, if those protein needs are met with an increase in farmed aquatic animals, humans can conserve land. Recent studies have suggested as much as 75 percent of the planet's land and soil has already been significantly degraded."While aquaculture can add s...
Ocean-going robot fish blends in with aquatic life

Ocean-going robot fish blends in with aquatic life

Technology
Scientists have developed a soft robotic fish that they can control with sound to swim beside real fish in the ocean.The fish - named SoFi - was made from silicon rubber by researchers at MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL).It swims by wagging its hydraulic-pump powered tail and controls its own buoyancy using special foam which allows it to dive or rise to the surface.SoFi, which was supported by the US National Science Foundation, was developed to be dexterous enough to swim beneath corals and has a camera allowing the researchers to see what is right in front of it.The electronics that control it are stored inside its head, although a remote controller is also available to allow a diver to control the fish underwater using ultrasonic signals.Image:The r...
Easy Sheet Pan Recipes for Chicken, Fish, Tofu, Pork—Even Pizza!

Easy Sheet Pan Recipes for Chicken, Fish, Tofu, Pork—Even Pizza!

Health
These healthy dinner ideas make cleanup a breeze. Maybe you’ve finally gotten used to busting out the sheet pan when you are in a recipe rut, or super-short on time. And perhaps you already know that you can make top-notch granola with it, or roast a whole head of cauliflower on it.But consider this: You can make a whole meal on a baking sheet, no matter your dietary preferences or restrictions. Cooking chicken? Great. Add chopped potatoes and leeks to the pan, too. Got halibut you’re wrapping in parchment? Consider the starches and veggies you might nestle around it. If you’re heating up that oven anyways, you might as well employ all its power, conserving energy.As you get more familiar with tucking one favorite dish in with another, you’ll start
Amazon fish challenges mutation idea

Amazon fish challenges mutation idea

Science
Evolutionary theory suggests that species favouring asexual reproduction will rapidly become extinct, as their genomes accumulate deadly mutations over time.But a study on an Amazon fish has cast doubt on the rapidity of this decline. Despite thousands of years of asexual reproduction, the genomes of the Amazon molly fish are remarkably stable and the species has survived. Details of the work have been published in Nature Ecology and Evolution.There are two fundamental ways in which new generations of life come to being - sexual and asexual reproduction.Sexual reproduction relies on special reproductive male and female sex cells, the eggs and sperm, joining together during the process of fertilisation.Each sex cell contains half the number of chromosomes of normal parent cells, then follow...