Sentences with phrase «predator fish such»

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.

Instead, the large reductions in fish urine were driven by the reduction of large - bodied fish and predator fish such as grouper, snapper or barracuda that occurs through selective fishing practices.

The introduction of predator fish such as bass and northern pike has dealt with the goldfish problem, and now the Park District wants to get a handle on erosion and landscaping woes.

Not exact matches

Certain fish species, such as the lookdown (Selene vomer), can alter the way light reflects off them to hide from predators.

The growing abundance of these jelly - feeding gobies now serves to provide sustenance to the predators that formerly feasted on the sardines, such as seabirds, larger fishes and, ultimately, humans.

They were thought to protect the fish against predators such as moray eels, but lab experiments on the bullethead parrotfish suggest the cocoons ward off the bites of bloodsucking parasites called gnathiids that spread diseases.

PAHs could stunt growth, an effect that could ripple through the ecosystem: smaller organisms are picked off by predators at a young age, leaving less food for larger fish such as red snapper and bluefin tuna.

Volunteers set up infrared - activated camera traps and monitor them for mammals, including predators such as coyote and the weasel - like fisher.

Past experiments have shown that in the presence of predators, such fish evolve a greater distance between their backs and their bellies, becoming «deeper» or «taller» in shape.

The research published in the journal Science Advances predicts that as the oceans warm fish — which appear to be superior predators in warm water — will extend their ranges away from the equator and cause a decline in the diversity of invertebrates such as crabs, lobsters, sea urchins and whelks.

«Predator numbers were severely depleted in heavily fished areas, while smaller prey fish such as damselfish, and herbivores such as parrotfish, had increased greatly in number having been released from predation.»

«Predatory fish are extremely important for maintaining a balanced ecosystem on the reef, yet predators such as coral trout, snapper and emperor fish remain the main target for both recreational and commercial fishers,» she says.

Small fish feed on contaminated plants, and bigger fish feed on those smaller fish, until top predators — such as shark, swordfish and mackerel — are practically brimming with methylmercury, a form of the metal that's readily absorbed into the body.

The species singled out by the recent FDA advisory — big predators such as albacore tuna, shark, and swordfish — can have 100 times more mercury in their tissues than smaller fish do.

Blenny fish venom most likely causes a sudden drop in blood pressure in would - be predators, such as grouper fish, that have been bitten by blennies, researchers report on March 30 in Current Biology.

Plus, as the fishing industry captures more and more of the animals» predators, such as tuna, cephalopods may see their niche expand.

The fishes» oxygen release system became even more efficient over the ensuing 150 - 270 million years, when it was necessary to deliver large amounts to organs such as the eye — which requires very large O2 loads to function well and avoid vision cell death — and which was essential to seeing clearly under water, to hunt or avoid predators.

It's important to bear in mind that cats are natural predators, and small critters, such as hamsters, birds and fish, need to be kept out of harm's way at all times.

Due to open variables such as growth rate and maximum age, the impact of accidental fishing, commercial fishing and death by predators or pollution is yet to be fully discovered.

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.

Deep - sea corals such as those in Alaskan waters provide sites for fish to feed, reproduce and hide from predators — in an area that produces more than half of US commercial fish landings.