Sentences with phrase «breeding pair»

He has supplied our project with tissue samples as well as breeding pairs of birds for our preliminary breeding studies and ecological research.

Starting with only four breeding pairs in the late»70s, we were able to constantly increase the population to 31 pairs today.

With all the killings, researchers suspect there are more young breeding pairs with less disciplined wolves.

Sure enough, parents nesting in insect - poor habitat averaged 77 % sons, while breeding pairs living on territories with abundant food produced 87 % daughters.

A single breeding pair of fleas may produce 20,000 fleas in 3 months.

More importantly, the number of breeding pairs increased from just two in each of the preceding annual counts to six in 2011.

However, the number of breeding pairs decreased from six in the last count to just three today.

We know from the science of population genetics how many breeding pairs of a species are necessary in order to supply enough genetic diversity for a population to survive.

The study compared about 100 Siberian hamsters, which were offspring of breeding pairs housed in 16 daylight hour days or eight hours of daylight.

In our own lines, we know the health several generations back to our original breeding pairs.

This means that the offspring of a healthy breeding pair may show positive for a specific genetic problem.

The chart provided below outlines the implications of various breeding pair combinations.

The only means of reducing the occurrence of these pups is to eliminate breeding the pair that produced the litter.

They can also breed the pair of goats to generate sustainable, long - term income.

However, the number of breeding pairs decreased from six in the last count to just three.

I don't know if anyone has ever done a census of actual numbers of, you know, breeding pairs of birds in the park.

«We are in a fool's climate, accidentally kept cool by smoke, and before this century is over billions of us will die and [* the few breeding pairs of people that survive will be in the Arctic *] where the climate remains tolerable.»

The birds do best when breeding pairs are separated or given space, while domestic pigeons can be housed in bred in large numbers in small communal spaces.

All bird species showed the same response, the team reports in the 23 December issue of Science: the number of fledglings per breeding pair started to decline when the abundance of forage fish dropped below one - third of the maximum observed amount.

The carcasses are quickly stripped to the bone by foxes and carrion birds, including the first breeding pair of white - tailed eagles seen in the Netherlands since the Middle Ages.

As of 2013 there were five breeding pairs on Santa Cruz Island, two on Santa Rosa, and one on Anacapa, and a total of over 40 bald eagles on the northern Channel Islands.

The island fox typically forms monogamous breeding pairs, which are frequently seen together beginning in January and through the breeding season, from late February to early March.

In a bottom - line result, the researchers concluded that protection increased the number of breeding pairs at Voyageurs by 37 percent; other factors accounted for the rest of the increase.

To find out which of the two corvids were more intrepid snack scouts, Esposito presented breeding pairs with a set of Cheetos challenges.

They monitored the birds after their release, tracking their survival and breeding success, as well as collecting the same data on 36 - 110 breeding pairs per year in the original national park population.

In the 1960s there were around 160,000 pairs in Norway; today there are only 15,000 breeding pairs left.

In particular, they often defend territories in stable breeding pairs as adults but live in more fluid situations as adolescents.

The Adelie penguin population has declined by 80 percent since the 1970s with one colony in particular dropping from 320 to 54 breeding pairs during the 14 years since observation began in 1990.

He should be selecting breed pairs based on genetics, meaning that the breeder looks for dogs who carry...» More

While individuals scattered around the United States discovered this rare breed and successfully imported dogs, even breeding pairs, the advent of the internet and global information contributed to the ability for perspective owners to get in contact with breeders here and in Europe.

Under Ohio guidelines, breeders that produce at least nine litters and sell 60 dogs per year are classed as high - volume facilities and must test breeding pairs for canine brucellosis.

This peer reviewed scientific report found that current dog breeding practices impose welfare costs on dogs «in many cases» through poor husbandry, high levels of inbreeding, and the use of breeding pairs which will transmit inherited diseases to their offspring, or extreme characteristics which affect quality of life.

Furthermore, simple Mendelien genetics tells us that there were not enough unrelated breeding pairs of humans for our species to have survived.

It is estimated that 500 breeding pairs remain and there are fears that breeding curlews could be lost from Wales within the next few decades without action.

[Eric R. Schuppe, Gloria D. Sanin and Matthew J. Fuxjager, The social context of a territorial dispute differentially influences the way individuals in breeding pairs coordinate their aggressive tactics, in Behavioral Ecology and Sociobiology]

The question of how much of the increases were due to nest protection is more complex than it sounds, as documenting the impact of protection requires more than counting breeding pairs and their offspring.

The same star breeding pair, on loan from Indonesia, went on to produce two more calves.

The RECIPIENT (i) shall register the alleles carried by mice with a new mutation engineered from the MATERIAL with Mouse Genome Informatics (MGI), and (ii) is requested to submit breeding pairs to a public repository for cryopreservation and distribution to third parties for non-commercial purposes on terms substantially the same as these Conditions of Use.

It is most often transmitted between chronically infected does (females) and their litters or between breeding pairs.

Larger sizes might lead to additional health problems, although those who are looking for a Doberman to provide personal protection or for use in police agencies or the military generally seek out the larger examples and some breeders create specific breeding pairs in the hope of getting a litter of large dogs.

But prior to the conference, she published an article with the Canine Health Foundation on how genetic tests can benefit the breeder when considering potential risks in using certain breeding pairs.

Responsible breeders who are trying to improve the breed will get their prospective breeding pair tested for these and other common genetic defects that occur in the breed to lessen the chance that any resulting puppies carry those problems.

Provision of two EBVs carries the additional possibility of balancing the two traits within breeding pairs (selection of a mate with complimentary EBVs for a breeding animal with substantially different genetic merit for «laxity» and «osteoarthritis») and the possibility of guidelines which aim to preserve alleles protective against osteoarthritic change in response to laxity.

There are 450 - 650 breeding pairs estimated to be on Maui with the largest known nesting colony located at the top of Haleakala at elevations of 8,000 to 10,000 feet.