Personality in deer neonates is already evident at birth and is linked to the hormones accumulated in mothers’ womb

Bawan Amin, Dómhnall J. Jennings, Adam F. Smith, Matthew Quinn, Srivats Chari, Amy Haigh, Devorah Matas, Lee Koren, Simone Ciuti The field of animal personality has been flourishing in the past decades, focusing on individual differences in behaviour. Although it is quite evident that individuals behave differently from each other, the origins of these consistent differences are still unclear. It is challenging to study personality in wild animals, and most of our knowledge … Continue reading Personality in deer neonates is already evident at birth and is linked to the hormones accumulated in mothers’ womb

Coral degredation impairs learning of non-predators by Whitetail damselfish

Chivers, Douglas; McCormick, Mark; Faken, Eric; Edmiston, Jake; Ferrari, Maud The threat of predation is pervasive in the life of most prey animals. Prey must quickly assess the identity of all animals that they encounter. Many animals are predators, but many are not, and being able to quickly distinguish between the two is crucial for potential prey. If young animals can learn the identity of … Continue reading Coral degredation impairs learning of non-predators by Whitetail damselfish

Two female fruit flies compete over access to a cap containing high-value food

Younger, less sexually active males make females fight each other more

Bath, Eleanor; Buzzoni, Daisy; Ralph, Toby; Wigby, Stuart; Sepil, Irem Mating changes female behaviour and physiology across a wide range of animals, with these changes induced by components of the male ejaculate, such as sperm and seminal fluid proteins. However, males can vary significantly in their ejaculates, due to factors such as age, mating history, or feeding status. This male variation may therefore lead to … Continue reading Younger, less sexually active males make females fight each other more

A male wire-tailed manakin perched on his display perch, the branch where he performs the acrobatic displays that are thought to inform female mate-choice decisions.

Assessing patterns of biological aging in an avian gymnast, the wire-tailed manakin

Ben J. Vernasco, Roslyn Dakin, Ariana D. Majer, Mark F. Haussmann, T. Brandt Ryder and Ignacio T. Moore Telomeres are segments of DNA located at the terminal ends of eukaryotic chromosomes and are composed of consecutive repeats of a specific nucleotide sequence. Telomeres are dynamic as the number of repeated sequences can change over the course of an individual’s lifetime. An individual’s telomere dynamics depend … Continue reading Assessing patterns of biological aging in an avian gymnast, the wire-tailed manakin