Related topics: genes · females · pregnancy · eggs · parents

Fish fertilize eggs in their male relatives' nests

Male cichlid fish sometimes fertilize eggs in nests belonging to one of their male relatives, a behaviour that is counter-intuitive yet ultimately beneficial, according to a study published in BMC Biology.

A single gene turns socially organized bees into social parasites

A small change in the genetic makeup of the South African Cape bee turns the socially organised animal into a fighting parasite. This change ensures that infertile worker bees begin to lay their own eggs and fight other colonies. ...

Childhood stress of mice affects their offspring behavior

Russian neuroscientists report that the stress experienced by mice during their first weeks of life affects not only them, but also their offspring. The data will help to understand how negative experience in early life affects ...

More heatwave summers will affect animals

Heatwaves similar to those experienced in Europe in 2018 can have a very negative impact on animals. A new study from Lund University in Sweden shows that overheated birds have smaller offspring, and that those that are born ...

Parents' guts tell tales to their children

Researchers at Umeå university in Sweden have published a new study showing that the gut bacteria can carry information of past experiences of an altered environment from parents to offspring. Eggs and sperm are not the ...

Reproductive strategy drives slower female aging

The aging of males and females is influenced by how they choose to invest their available energy, according to a study of fruit flies carried out at Linköping University, Sweden. The results, published in The American Naturalist, ...

page 2 from 23