Related topics: women · ovarian cancer

Pesticides hit bumblebee reproduction

Scientists already knew that neonicotinoid pesticides, which affect insects' nervous systems, can alter bee behaviour, putting these vital pollinators, already threatened by habitat loss and disease, further at risk.

Researchers find a way to use CRISPR Cas-9 on reptiles

A team of researchers at the University of Georgia has found a way to use the CRISPR-Cas9 gene editing tool on reptiles. In their paper uploaded to the bioRxiv preprint server, the group describes the technique they developed ...

Adults lack stem cells for making new eggs, research shows

Mammalian females ovulate periodically over their reproductive lifetimes, placing significant demands on their ovaries for egg production. Whether mammals generate new eggs in adulthood using stem cells has been a source ...

Genetic 'remix' key to evolution of bee behavior

Worker bees have become a highly skilled and specialized work force because the genes that determine their behaviour are shuffled frequently, helping natural selection to build a better bee, research from York University ...

The battle to identify the world's smallest vertebrate

More and more really tiny species are being discovered, like a 7.9mm fish in 2006 and a 7.7mm frog in 2011. There's increasing competition for the title of the 'world's smallest vertebrate', but exactly how do you determine ...

Vicious queen ants use mob tactics to reach the top

Leptothorax acervorum ants live all over the Northern hemisphere, but their reproductive strategy depends on habitat. Colonies are polygynous (more than one queen) in the forest of Siberia and central Europe, but functionally ...

Exercise during gestation might affect future fertility

A short walk around the barn might improve the future fertility of Yorkshire gilts. According to research presented by Samantha Kaminski, a graduate student at North Dakota State University, swine fetuses showed significant ...

Important fertility mechanism discovered

Scientists in Mainz and Aachen have discovered a new mechanism that controls egg cell fertility and that might have future therapeutic potential. It was revealed by Professor Dr. Walter Stöcker of the Institute of Zoology ...

The ant queen's chemical crown

The defining feature of social insects is that societies contain queens, which specialise in laying eggs, as well as workers, which are mostly infertile but take care of the offspring and the nest. However, when the queen ...

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