Natures wonders: Migrating turtles use Earth's magnetism (Introduction)

by David Turell , Saturday, January 24, 2015, 17:46 (3589 days ago) @ David Turell

Snails use weaponized insulin to stun fish they eat:-http://www.livescience.com/49547-cone-snails-insulin-weapon.html?cmpid=558959-"This is the first reported case of any animal using insulin in its venom, Safavi said. What's more, the insulin resembles fish insulin, making it an effective tool against the snails' preferred prey. When the researchers injected the insulin into zebrafish, the fish became less active in less than a minute, even though the fish started the experiment with high blood sugar levels.-"The weaponized insulin also varies depending on the snail's preferred diet. For instance, some cone snails that eat worms also produce insulin that is similar to worm insulin. This suggests that certain species of cone snails have honed their weaponized insulin to imitate that of their prey's, the researchers said."