Herbicide harming marsupial health and development

The health of wallabies and kangaroos is being affected by the herbicide, atrazine, which is used widely in Australia on cereal crops and in forestation to prevent weeds, according to new research.

Size matters in the sex life of salmon

For Atlantic salmon, size matters when it comes to love. Larger males and females that may spend up to four years at sea produce many more babies, but they are very rare compared to younger fish.

A genetic tug-of-war between the sexes begets variation

In species with sexual reproduction, no two individuals are alike, and scientists have long struggled to understand why there is so much genetic variation. In a new study published in Nature Ecology & Evolution, a team of ...

Male spiders show their sensitive side

The sensory capacity of male spiders during mating may be higher than previously thought, a study in the open access journal Frontiers in Zoology suggests.

Sneaky mating may be in female damselfies' interest

During the mating season, male damselflies battle fiercely for control of prime territories containing resources—typically patches of floating leaves used for egg deposition in wetlands—that are key to attracting females. ...

Male fish can thank genes for colourful looks

Striking traits seen only in males of some species – such as colourful peacock feathers or butterfly wings – are partly explained by gene behaviour, research suggests.

Being a dad is hard when you're a plainfin midshipman fish

Each spring, male plainfin midshipman fish (Porichthys notatus) —a kind of toadfish —emerge from the depths of the Pacific Ocean to breed on the beach. They overwhelm the beach at low tide, wedge themselves beneath ...

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