Sentences with phrase «in a cooperative breeding»

When the results of the trials were subjected to statistical analysis, the team found a close linear correlation between the degree to which a species engages in cooperative breeding and the likelihood that members of the group would help fellow animals get the food treat.

Because the human and chimpanzee lineages split between 5 million and 7 million years ago, and humans are the only apes that engage in cooperative breeding, researchers have puzzled over how this helping behavior might have evolved all over again on the human line.

Not exact matches

The extreme minority of males in this species hasn't made the cooperative breeding program easy, which is why Ken Ramirez, executive vice president of animal care and training at Shedd, says this calf is particularly exciting.

The secret, the team reports in the 17 August issue of Science, was that eggs laid by females in cooperative groups were 5 % smaller than those laid by females who bred in pairs, and their yolks had 12 % less lipids and 13 % less protein.

A team led by biologist Andrew Russell of the University of Sheffield, U.K., set out to evaluate the costs and benefits of cooperative breeding in the superb fairy - wren of southeastern Australia.

N. Pulcher lives in family groups with up to 25 individuals, with one breeder pair and several helpers participating in territory defence and raising of offspring — known as «cooperative breeding».

In certain cooperative breeding animals, such a dominant female is the only one capable of breeding; the subordinates don't have the proper hormone levels to be fertile.

Group foraging in cooperative animals provides predators with advantages over prey, but for less cooperative colonial - breeding predators, like the little penguin, the benefits of group foraging are less clear due to the potential for competition between penguins.

She agrees with Burkart and her co-workers that cooperative breeding «goes a long way towards explaining why only the apes in the line leading to Homo developed the necessary neural underpinnings» for highly cooperative behavior.

According to her model, early in their evolution humans added cooperative breeding behaviors to their already existing advanced ape cognition, leading to a powerful combination of smarts and sociality that fueled even bigger brains, the evolution of language, and unprecedented levels of cooperation.

In this seminar I formalise a cooperative game that captures the general features of the breeding system for a vast number of social hermaphroditic animals, highlighting the fundamental importance of information updating and sex - role commitment in rendering the cooperative strategy evolutionarily stablIn this seminar I formalise a cooperative game that captures the general features of the breeding system for a vast number of social hermaphroditic animals, highlighting the fundamental importance of information updating and sex - role commitment in rendering the cooperative strategy evolutionarily stablin rendering the cooperative strategy evolutionarily stable.

Group matrix models shed light on population dynamics, Allee effects in meerkats and evolution of cooperative breeding

Even though these dogs are quite smart and generally cooperative, it's best to obedience train them as puppies or, like most large breeds, they will try to take the lead in your relationship.

Breeders and breed clubs should be cooperative and supportive of researchers studying genetic disorders in their breed.

American Brittany Rescue, Inc. is an organization that was formed in 1991 as a cooperative effort of Brittany owners, breeders, trainers, and fanciers who ABR believes have a responsibility not only for their own dogs and the dogs they produce, but for the breed as a whole.

His cartoons have been published in Playboy Magazine, Narrative Magazine, and The New Breed, a King Features cooperative single panel cartoon.

From a life - history theory perspective, Chipman & Morrison [65] investigated whether adolescent sexual risk taking and pregnancy is due to: (i) perceptions of high mortality risk in the environment; (ii) good access to alloparents or cooperative breeding networks; (iii) poor knowledge of safe sexual practices; or (iv) structural risk in the environment (see [66 — 69] for in - depth discussions of factors influencing adolescent sexual risk taking).