Compare and contrast how sea stars and sea urchins feed. What is the difference between a mammal and a fish? How are cnidarians different from sponges? What adaptations do puffer fish have? What are some adaptations of sea turtles? How are amphibians and mammals different?
Desatnik and colleagues started off with fossils of pleurocystitids, which are related to present-day sea stars andsea urchinsbut that had a muscular stem—a kind of tail—to move. They used CT scans to get a better idea of the 3D shape. Computer simulations suggested the ways it may ha...
Many clever species are undeterred by porcupine quills, venomous snake fangs, sticky-armed octopuses, and more.
Nofima opened its Aquafeed Technology Centre (ATC) this year Protein resources in feed are utilised more efficiently in farmed fish compared to production animals on land. This is due to basic biology – fish are poikilothermic and do not use their energy to maintain a constant body temperature...
For example, manatee researchers at the University of South Florida feed a pair of captive sea cows 72 heads of lettuce and 12 bunches of kale each day [source: Goode]. With their vegetarian diet and boat-sized bodies, manatees neither need to hunt prey nor escape predators, which would ...
Feed only during daylight hours. Don't provide food before sunrise or after sunset, as the fish will not come to the surface and the uneaten food will pollute the pond. Install a pond aerator, as supplementary feeding causes bluegills to produce additional metabolic waste. This waste consumes...
While it may not appear that starfish or sea stars have eyes, they do. Their eyespots are at the end of each arm and afford them limited sight.
Another example is the planktonic larvae of benthic marine invertebrates, many of which swim and feed using ciliated organs, and, at the same time, dramatically increase in size over the course of larval life [10]. Larval epithelia of deuterostomes, such as sea urchins, are typically composed...
Sign up with one click: Facebook Twitter Google Share on Facebook PRFC (redirected fromPrevious Factor) Category filter: AcronymDefinition PRFCPotomac River Fisheries Commission PRFCPlasma Rico en Factores de Crecimiento(Spanish: Platelet Rich in Growth Factors) ...
After the sampling, Jacqueline Austermann, a Lamont scientist who specializes in modeling past sea levels, ran down a list of other factors that have produced conflicting estimates. Most actually have to do not with water, but land. For one, she said, when miles-thick ice coats high-latitude...