Competition leads to fathers who produce more male sperm

New research led by The University of Western Australia has shown that the social conditions that a male experiences while growing up can influence the amount of X and Y chromosome sperm that he produces as an adult.

Warming seas wreck Great Barrier Reef's regrowth

Rising sea temperatures have wrecked the Great Barrier Reef's ability to regrow, researchers said Wednesday, highlighting for the first time a 90 percent fall in new corals since back-to-back heatwaves bleached the World ...

Love Island: Flamboyant males get the girls on Madagascar

Biodiversity hotspot Madagascar is one of the world's biggest islands, and home to some of its biggest insects. Now German scientists have discovered two new species of giant stick insect, living only in the dry forests of ...

Climate change threat to dolphins' survival

An unprecedented marine heatwave had long-lasting negative impacts on both survival and birth rates for the iconic dolphin population in Shark Bay, Western Australia. Researchers at UZH have now documented that climate change ...

A key player in the maturation of sexual organs

Puberty is a period of extensive changes of body morphology and function. Relatively little is known about what sets the whole process in motion. Thanks to studies in the tiny worm C. elegans, the group of Helge GroƟhans ...

African killifish becomes fastest maturing vertebrate on record

Annual killifish are known to live their lives at one of two speeds: "pause" or "fast-forward." For most of the year, the tiny freshwater fish persist as diapausing embryos buried in sediments across the African savannah, ...

Fish study finds genes that regulate social behaviors

Genes in an area of the brain that is relatively similar in fish, humans and all vertebrates appear to regulate how organisms coordinate and shift their behaviors, according to a new Cornell University study.

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