Sentences with phrase «of prey species»

There are numerous studies of phenology (study of the timing of periodic biological / ecological events) that demonstrate damage to specific species and ecosystems, because of changes in the timing of migration, reproduction, and arrival of prey species.

More importantly, against the combined threats of whaling, habitat degradation, pollution, disturbances from sonar and drilling activities, overfishing of prey species, and the uncertain looming impacts of climate change, whales are surviving.

Contact Marta for stories about general ocean issues affecting Europe and Oceana's European - based campaigns on Mediterranean bluefin tuna, sharks, bycatch, overfishing subsidies, driftnetting, bottom trawling, marine protected areas, Illegal, Unregulated and Unreported fishing, mercury contamination, overfishing of prey species and the «Common Fishery Policy Reform.»

In a discussion of a 2014 study of Atlantic white shark trends, the lead author, Tobey Curtis of the National Oceanic and Atmospheric Administration, said one factor is the resurgence in populations of prey species:

Because cats have evolved the fecundity of a prey species, they can usually reoccupy a habitat from which they have been extirpated faster than rival predators can arrive and breed up to the vacated carrying capacity.

Domestic rabbits maintain the physiology and behavior of a prey species and they experience pain in the same manner as other companion animals.

«Cats are known for their physical agility, but this vocal manipulation of prey species indicates a physical cunning which merits further study,» he says.

But the authors also point out that, «despite occurring at very high densities, the summed effects on prey populations appeared unlikely to affect population size for the majority of prey species.»

May 2, 2011 The winners of mass extinction: with predators gone, prey thrives In modern ecology, the removal or addition of a predator to an ecosystem can produce dramatic changes in the population of prey species.

With the decline of prey species, the benefit from using stone tools would decrease, leading to less tool use or its cessation.

Studying these monkeys offers the opportunity to test how a non-human primate using stone - based technology affects the sustainability of their prey species.

Importantly, the study shows that a wide variety of cuckoos have adapted different plumage patterns depending on the area they inhabit so that they match a local bird of prey species.

In the study, prey DNA was extracted from the tiny dragonfly droppings and the researchers managed to identify dozens of prey species from the samples.

Checking the types of animal bones at other early Homo fossil sites out of Africa could show whether the mix of prey species changed when hominins colonized a new site, supporting a «naïve prey» effect.

He points out that land managers are already doing so, less systematically, by running regulated hunting of prey species in areas where top predators have been extirpated.

It is also an apex and keystone predator, playing an important role in stabilizing ecosystems and regulating the populations of prey species.

Tigers are endangered, largely due to habitat loss, hunting and overhunting of prey species.

Not exact matches

When predators are taken out of an ecosystem, the prey species get messed up in many ways.

I really don't think a «Grand Creator» would willfully impose that type of existence on innocent creatures... not to mention the religions that have preyed on the innocent members of our own species and still do while pretending to be «of god».

In an eco-system, many of the relations between species are those of predator and prey.

Ecological research already carried out in these national parks and surrounding coffee plantations has shown the presence of more than 300 species of birds, (including endemic species, threatened forest specialists and birds of prey e.g. Black Hawk - Eagle Spizaetus tyrannus), 31 mammals species (some of them are endangered species such as the ocelot, cacomistle and Mexican porcupine), 26 reptile species, and 326 tree and bush species.

Several other bird species ingest lead shot in the same way as waterfowl, and birds of prey can suffer lead poisoning from accidentally ingesting shot in their prey.

«Taking into account the size of adult squid, the toothfish probably is its most common prey species, because no other deep - sea fish of similar size are available around the Antarctic,» says Laptikhovsky.

All of the infected animals are sifakas — the only lemur species out of 17 at the center known to fall prey to the parasite — and most of them were under age five when they got sick.

«But it can also alter how species interact, such as by impairing the ability of prey to avoid predators,» she said.

But beyond acquiring a meal, cannibalism enables individuals of some species to accelerate their developmental process, as we saw with spadefoot toads, allowing them to quickly outgrow a stage in which they might be preyed upon or perish due to unpredictable environmental conditions.

Each venomous snake species produces a unique venom, a mixture of around 50 - 200 toxic proteins and protein fragments that co-evolve with the typical prey of the snake, such as the smaller reptiles eaten by the eastern coral snake or the rodents preferred by rattlesnakes.

Identifying the factors that determine these patterns — the distances separating populations, physical barriers preventing the movement of animals, hunting behavior, and interactions with prey species — is the fun part.

The key difference between species may be a matter of scent, seasonal timing, vocalization, auditory targeting of a particular prey, or some other trait.

Adult ground beetles of the genus Calosoma fit the bill perfectly as they eat a variety of caterpillar species in the wild and take down prey bigger than themselves.

Whether the newcomer will fill the dorado's ecological role or prey on different fish and thus skew species assemblages is unclear, says Carlos Cañas, a river ecologist at the Wildlife Conservation Society here, who plans to monitor the migration of large catfish in the watershed.

A new Journal of Wildlife Management study conducted in South Africa has found that black - backed jackals, a similar species to coyotes and dingoes, prefer to eat livestock rather than similar - sized wild prey, which has important consequences for livestock husbandry and the management of predators.

Hence, according to Fitzgerald speaking from his own experience in class rooms, Hawkeye can instigate discussion on the physiology of the human eye, while also allowing for comparison with other species, such as birds of prey, and reflection on advancements related to genetic engineering and wearable technologies.

For the booming moose population of Isle Royale, a key species in the world's longest running predator - prey study on the island, skulls have shrunk by about 16 percent over a 40 - year period.

The amphibians themselves, Maerz notes, are an important prey species for «snakes, small mammals, turkeys and a host of forest creatures.»

The saliva of these creatures contains at least 57 species of bacteria, which are believed to contribute to the demise of their prey.

The resulting videos contained over 4 terabytes of data, which Sheng and his colleagues crunched to compare the swimming behaviors of predator and prey species in the presence of different toxin levels.

Apparent competition is an increasing problem, causing endangerment and extinction of native prey as abundant species colonize new areas in the wake of human - caused change to the environment.

In the lab, the team mixed each strain of K. veneficum with a species of algae on which it preys, and recorded the three - dimensional motions of thousands of cells using a high - speed holographic microscopy technique they described in 20071.

Although many dinoflagellates can survive through photosynthesis alone, some species are able to grow twice as fast by preying on other algae — and it is this feeding mechanism that is now thought to be aided by the production of toxins.

The current extinction of many of Earth's large terrestrial carnivores has left some extant prey species lacking knowledge about contemporary predators, a situation roughly parallel to that 10,000 to 50,000 years ago, when naı̈ve animals first encountered colonizing human hunters.

In order to examine parasite infections also in the wolf's large prey species, the team collected internal organs of shot prey animals from hunting parties.

In fact, in order for a carnivore to have shown similar values it would have needed to prey almost entirely on species that fed on a type of plant that did not evolve until approximately 14 million years after the sampled individuals lived.

Published in Biological Conservation, the study shows that populations of the African lion and its prey species are drastically below their natural potential inside most of Africa's protected areas (PA).

They found that species that have evolved noxious sprays as a defense, such as skunks, tend to be nocturnal and subject to predation by other mammals, whereas socially vigilant species, such as mongooses, tend to be diurnal and at risk of predation by birds of prey.

In their food - web modeling, Sahasrabudhe and Motter have used accepted ecological models of predator - prey relationships, but a more elaborate representation of an ecosystem would also include parasitism, seed dispersal, competition, mutualisms (in which species make life easier for each other), nutrient dynamics and more.

Your article on the influence of fear on prey species and the consequent ecological impacts of their resulting behaviour was...

«From time to time they would find in the stomachs of the snakes they butchered the same other prey species that the Agta really liked: wild deer, wild pigs, and monkeys,» says Greene.

Some tarantulas succeed in occasionally capturing small birds, small mammals such as mice, and even small fish, but their ordinary prey consists of insects such as crickets (for ground dwellers) and moths (for arboreal species).

Lunging data was collected by placing electronic tags on the whales to measure speed, acceleration and timing of the mouth opening in order to create different lunging profiles for each target prey species.