Sentences with phrase «other predator fish»

Reef fish life is abundant and the deep walls and brisk currents at some of the sites attract grey reef, hammerhead and thresher sharks, and other predator fish such as mackerel, barracuda and jacks.

Not exact matches

This may seem like some useless information when an ocean's worth of water is pushing in on them from every side, but sharks use this ability to figure out where other fish, both predators and prey, are.

Says Glen Sutton, who spent over four decades working as a predator trapper for the U.S. Fish and Wildlife Service, embracing some of its methods but disdaining others, «I'm afraid a lot of these animals are going to be extinct soon.

While some of the fish were left alone, others were exposed to what looked like a predator — a doll version of a guppy - eating fish called a pike cichlid.

Though the fishes were not commercially valuable, they are an important source of food for marine predators like other fish, squid and whales, and help to support ecosystem health.

Despite the seemingly large number of tiny fish that fishermen and regulators thought were going to waste, the number was small compared to death by non-human predators and lack of plankton and other food sources.

Carefully designed marine reserves and a reduction in fishing, they write, «could hold promise for safeguarding sharks and other large pelagic predators from further declines and ecological extinction.»

With most other predators now out of the picture, early sharks and ray - finned fish like Fouldenia used their crushing jaws to dine on these spiny, stalked and hard - shelled creatures.

Research conducted by Dr Bill Dew at the University of Lethbridge in Canada looked for the first time at the effect of the metal contaminants nickel and copper on specific fish olfactory sensory neurons, and how these affect the fish's ability to detect and swim away from an odour released by other fish of the same species (conspecifics) when a predator attack takes place.

Up to 100 photo - sensitive cells form a retina, which is positioned so any bird, fish, or other predator up to 2 meters away registers as an image there.

Prized by diners for its tasty white flesh, the yard - long lingcod is a voracious predator that ambushes other fish among the submerged rock pinnacles and kelp thickets of Prince William Sound.

Not only do the mobbers know the location of their predator's habitat, allowing them to avoid it in future, but they have also made the worm's location visible to all other fishes in the area.

In many places, these smaller fish are suitable for eating, but off southwestern Africa and other places, the predators were replaced by undesirable fish.

Their main objective was to see how translocating fishers — in this case moving them from the study area to reintroduce them to the northern Sierra Nevada mountains — influenced their numbers; researchers also wanted to learn about the effects fishers and other predators of similar size have on each other.

Green and colleagues spent eight years studying fishers and other predators in a 179 - square - mile region on the Oregon - California border.

«Throughout the world, numbers of grey foxes, fishers and other midsized predators are actually increasing, and usually that happens because the bigger animals that are limiting them are decreasing.

Adult perch can grow to weigh more than 440 pounds, and are fierce predators that feed on insects, crustaceans, and other fish — even those of its own species.

Previous research has linked other drugs in fish to slower reaction times to predators, altered eating habits and anxiety.

Groupers and other fish often spawn together in coral reefs at depths between 30 and 150 meters in the Caribbean, and these aggregations may make them easy pickings for predators.

The term describes how fish and other organisms perceive the safety of their environment based on where and how much shelter from predators is available.

While the outlook for reefs in the fact of today's rapid global warming is exceptionally serious, the authors provide remedial options for management interventions that will increase reef resilience, including: a) reduce the harvest of herbivorous fish to sustainable levels, b) protect sharks and other top predators, c) manage all aspects of water quality, and d) diminish direct anthropogenic impacts and stressors.

That plastic can then move up the food chain as seabirds, seals and other marine predators eat those fish.

They also found that fish that consume large quantities of microplastics are «smaller, slower, and more stupid» (and die at twice the rate of the others when exposed to predators) than ones living in clean water and, therefore, on healthier diets.

The named fish may contain more mercury than other species because they are long living fish and / or predators and can accumulate higher levels of mercury by eating other fish.

One student team plans to make dog - obedience signs for the San Diego Humane Society; two others working with the San Diego Oceans Foundation will build a fish pen to protect 11,500 sea bass from avian predators.

«Let's get into some of the other reasons why we need some of this... The U.S. Fish and Wildlife Service — and because it was made into a cat issue, I'm using cats — cites that cats and other introduced predators are responsible for much of the migratory bird loss.

You will discover hundreds of unique species based on real creatures, and interact with schools of thousands of fish that procedurally respond to you, each other, and predators.

All emphasize Smith's brushwork, from the mixed diagonal swooshes of opener Blue (like schools of fish evading an unseen predator), to Brown's sticky, magnified finger - painting, to frozen palette - knife globules accentuating Blue's (this is the other Blue, the primary in the back) somehow insectile carapace.

With huge metabolic demands — and large populations before humans started hunting them — great whales are the ocean's ecosystem engineers: they eat many fish and invertebrates, are themselves prey to other predators like killer whales, and distribute nutrients through the water.

Scientists estimate that 90 % of the world's large fish have been removed from our oceans, including many tuna, sharks, halibut, grouper, and other top level predators which help maintain an ecological balance.

For example, cod and lobster fisheries south of Cape Cod are projected to have significant declines.83, 84 Although suitable habitats will be shrinking for some species (such as coldwater fish like brook trout) and expanding for others (such as warmwater fish like bass), it is difficult to predict what proportion of species will be able to move or adapt as their optimum climate zones shift.85 As each species responds uniquely to climate change, disruptions of important species interactions (plants and pollinators; predators and prey) can be expected.

«Scientists think the algae forms into balls to protect itself from fish and other predators or so that they can roll back into the sea when washed ashore»