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Summary: Memories for the occurrence and termination of a central-brain reward signal have opposite valence and differ in how fast they are learned, how quickly they are lost and in exactly how they shape the approach-avoidance balance.


Summary: Skeletal landmarks in X-ray video of behaving rats are rapidly and automatically tracked with millimeter-scale accuracy using DeepLabCut machine learning software.


Summary:Danionella dracula is a sonic species that modulates putatively acoustic and postural displays during aggressive interactions based on residency and body size.

Summary: Wood ants can learn and remember overnight the direction of a short foraging route that is specified magnetically.

Summary: Behavioural trials indicate the eyes of conch snail Conomurex luhuanus provide high-resolution spatial vision, and morphological examination reveals the retina contains more cell types than those of other gastropods.

Summary: Plant vibrations excited by frog calls prove highly important to the function of those calls.

Summary: Spotted ratfish consume hard prey using jaws made of very flexible cartilage, which is atypical for durophagous predators.

Summary: Adult females of a polyphagous fly fed a diet rich in sugar at the larval stage show increased resistance to infection, indicating developmental conditions influence adulthood.

Highlighted Article: Sea urchin sperm performance and internal pH are reduced in ocean acidification conditions, with a high degree of individual variation in both measures.

Summary: European songbird migrants do not calibrate their compass systems even if they have access to a view of the sky and stars during cue-conflict treatments.

Highlighted Article: Larger individuals of a teleost fish are less tolerant of acute incremental warming, measured as the temperature for fatigue from sustained aerobic swimming. Respirometry suggests this might be linked to lower oxygen uptake capacity.

Summary: Domesticated honeybees have developed strategies at the mitochondrial level to stay active and keep the hive warm during winter, and during this stressful period, their immune system is enhanced.

Summary: Exposure to higher average water temperatures from the start of development confers increased cardiac heat tolerance and altered heart morphology in a hatchery-bred population of juvenile Atlantic salmon.

Summary: TtnΔ112-158 muscles exhibit reduced active stiffness despite having a large deletion to PEVK titin.

Summary: Warm temperature and estrone sulfate induce female development in Trachemys scripta but act on different points of the sex-determining pathway.

Summary: Physical and chemical analyses of the cuticular hydrocarbon layers of three ant species show species-specific responses to acclimation temperature, indicating that they use different physical mechanisms to maintain waterproofing in different climates.


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