Sentences with phrase «predator fish in»

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.

The latest casualty of the Congressional Review Act could be a US Fish and Wildlife Service rule that prohibits the wholesale killing of predators on wildlife refuges in Alaska.

«Fish and Wildlife told me that the 1080 I'd sent to three predator - control boards in Wyoming was not being used by Government trappers at all,» Allen says.

To avoid predators, some fish sport pale bellies and dark backs to blend in with the sky and the deep.

Even in the fish with impaired immune systems, the predators saved about a quarter of the lot.

In previous research they showed that predator decline has come about because of recreational fishing.

In experiments done at the Monterey Bay Aquarium Research Institute here, hermit crabs living in highly acidic conditions did not show the increased boldness of Munday's clown fish, but they took far longer to withdraw into their shells than normal when they came under attack from a potential predator (in this case, a toy octopusIn experiments done at the Monterey Bay Aquarium Research Institute here, hermit crabs living in highly acidic conditions did not show the increased boldness of Munday's clown fish, but they took far longer to withdraw into their shells than normal when they came under attack from a potential predator (in this case, a toy octopusin highly acidic conditions did not show the increased boldness of Munday's clown fish, but they took far longer to withdraw into their shells than normal when they came under attack from a potential predator (in this case, a toy octopusin this case, a toy octopus).

Read previous Zoologger columns: The sharpest mind in the farmyard, Invasion of the crazy incestuous ants, The fish with no stomach for its prey, Well - fed black widows promise safe sex, The butterfly that sleeps its way to safety, How to get elected in a termite democracy, Away in a vermin - infested manger, Child clones shape - shift to escape hunters Weaponised eggs turn predators» stomachs, The hardest bat in the world, Houdini fly inflates head to break walls.

Off the List Thanks to repopulation efforts during the past few decades, the gray wolf (Canis lupus) now thrives in the U.S., and since 2003 the U.S. Fish and Wildlife Service has been trying to move the top predator off the endangered species list — a plan opposed by groups that believe the wolves are susceptible to being overhunted [see «Out of the Woods»; SciAm, April 2003].

Fossils found in the Kem Kem have been unusually large: not just Spinosaurus, but also Carcharodontosaurus, a land - based predator nearly as big; crocodilian monsters as long as a school bus; and fish the size of a car.

In recent years, it seems that the number of jellyfish have been on the rise, fueling concerns that their voracious appetites for microscopic sea creatures might have a negative impact on the food web and that their density might alter how fish behave — young fish seek refuge among the jellies» tentacles, for example — and consequently hamper the ability of predators to catch these fish.

Mimicked predator attacks also showed the dominant species adopted riskier behavior in higher - acidity water, fleeing shorter distances than the fish in water with normal acidity.

With venomous spines, no natural predators in the Atlantic Ocean, and aggressive behavior, the lionfish have been shown to eat almost anything smaller than they are — fish, shrimp, crabs and octopus.

The newly discovered fossil fish was a predator that could reach nine feet in length.

The dominant piscine predators dine on the smaller fish around a reef, which, in turn, prey on the small invertebrates that chow down the starfish larvae (young).

While in the larvae stage, the Nematostella fall prey to larger fish but once mature, they become predators themselves, catching shrimp and small fish with their venomous tentacles.

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.»

In a non-native habitat, fish become susceptible to parasites, diseases and predators that they are not equipped to fend off.

A sit - and - wait predator, they have a wormlike lure on their tongue that draws in fish, «and then snap!»

Fish raised in the more acidic seawater that would result from higher carbon dioxide levels forget to flee predators.

But cohesion and coordination in fish schools are essential in helping some animals avoid predators and exchange information socially.

These animals have declined as their habitat has been destroyed, they've been caught up in fishing gear, their nesting areas have been disturbed and raided for their eggs, they've ingested plastic pollution and they've been hunted by people and predators.

Rochet has run theoretical models on the effects of fishing practices and has indeed found that selective fishing can negatively impact biodiversity and create ripples in the food web as the balance between predator and prey is upset.

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.

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.

As apex predators they may be amplifying negative effects lower in the food chain; if tiny prey organisms are getting sickened and fish eat them, and the dolphins consume the fish, the bioaccumulation of toxins might be serious.

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.

In addition to attracting prey, the fish's blue - green radiance may attract mates and ward off predators.

The changes in biomass are worrying, says Michael Hirshfield, chief scientist of the advocacy group Oceana, based in Washington, D.C. Populations of small fish tend to boom and bust — making ecosystems less stable — much more when the ranks of top predators have been gutted.

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.

To test this hypothesis, the possible contribution of marine fish in the diet of these carnivores was evaluated using carbon, nitrogen and sulphur isotopes in faunal bone collagen, comparing these isotopic signatures between predators and their potential prey.

Some fish living in waters with currently naturally high levels of CO2 lose their sense of smell, and with it their ability to perceive predators — a possible portent to a global situation in the near future.

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

The significance of the photophores on the underside of mesopelagic fishes has long been thought to provide camouflage against predators swimming below, helping them to blend in with any residual light shining down from the surface.

«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.»

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.

The reduction in predator abundance through fishing altered the balance and structure of the coral reef ecosystem.

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

New fossils found in China show that flying fish were evading predators millions of years earlier than we thought

A novel research approach by Oregon State University has resulted in a key step toward better protecting the fisher, an important forest predator that findings show is the dominant small carnivore when present.

He thinks they were ambush predators: their long necks and small heads may have let them sneak up to unsuspecting fish in murky waters.

A lot of these fish, their larval stages depend on hiding in among the corals to hide from predators.»

Instead, blenny venom causes the victim's blood pressure to plunge by almost 40 % for a short time, which in the wild might slow down a would - be predator (like grouper fish) long enough for the tiny blenny to escape.

The researchers believe that in these waters, predators have difficulty finding and getting to the fish.

Baby cichlid fish masquerade as snails with mother luring more snails in, which allows the mother to spend less time chasing away predators

«If you're a fish that can operate in very shallow water, you can escape predators that can only swim in deeper water,» Jenkins explains.

Read previous Zoologger columns: The butterfly that sleeps its way to safety, How to get elected in a termite democracy, Away in a vermin - infested manger, Child clones shape - shift to escape hunters Weaponised eggs turn predators» stomachs, The hardest bat in the world, Houdini fly inflates head to break walls, A primate with eyes bigger than its brains, The solar - powered electric hornet, The miniature cuckold fish, Lemmings swap suicide for infanticide.

Atwood and her team tested the idea in Canada and Costa Rica by temporarily removing fish and insect top predators from ponds, streams and tiny wet ecosystems associated with bromeliad plants.

The researchers placed the robot in a shared tank with shoals of live zebrafish, aiming to determine if the fish would perceive the robot as a predator, and whether visual cues from the robot could be used to modulate the fishes» social behavior and activity.

Hagfish are marine fish shaped like eels, famous for releasing large quantities of «slime» that unfolds, assembles and expands into the surrounding water in response to a threat or a predator's attack.