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Summary:Drosophila melanogaster are known to exhibit age-related decreases in aversive memory. Appetitive memory likewise decreases, beginning in the first 2–3 weeks of adult life.

Summary: Eccentric force is relatively preserved compared with isometric force when cross-bridge cycling is inhibited, possibly because of the contribution of the elastic force produced by titin.


Summary:Dugesia tigrina increases its capacity to metabolize medium-chain fatty acids in response to cold acclimation, while long-chain fatty acid oxidation remains unchanged.

Summary: Variation in thermal sensitivity of metabolism and thermal tolerance within and among Fundulus heteroclitus populations is wide and trait dependent, suggesting individuals have numerous adaptive strategies for dealing with temperature.

Summary: Spix's disc-winged bats prefer to roost in narrow leaves with a long apex, which may be related to costly manoeuvres during the approach and landing phases.

Highlighted Article: Halloween genes, neverland and ecdysone receptor transcripts are found in the ovaries of Rhodnius prolixus, suggesting that ecdysteroid is involved in egg production and choriogenesis.

Summary: Natterjack toads show slow development of auditory sensitivity and maturation of the middle ear, which occur around 500 days post-metamorphosis; development seems to depend more on animal size than on age.

Summary: The endocrine and cellular stress responses make stressor-specific and distinct contributions to non-genetic inheritance in zebrafish following chronic exposure to cycling thermal stress and/or hypoxia.

Summary: Metabolic remodeling in response to temperature varies among tissues, with some tissues contributing more than others to changes in the metabolic rate of threespine stickleback.

Summary: The ability to make rapid changes in direction is a central component of animal locomotion, and both body size and body shape can influence turning performance.

Summary: Hypoxia acclimation improves aerobic swim performance of red drum independent of maximum metabolic rate and tissue oxygen extraction mechanisms.

Summary: Four modes of exercise improve skeletal muscle mass and exercise capacity, regulate the levels of protein synthesis and degradation, and metabolic enzyme activity, and inhibit apoptosis in mice undergoing early aging via activation of the IGF-1/IGF-1R–PI3K/Akt signaling pathway.

Summary: The higher Arrhenius breakpoint temperature of cardiac thermal performance and ‘preparative defence’ strategies of Batillaria attramentaria snails may allow the dark shell morph to adapt to rapid and stronger thermal stress.

Summary: Exertion capacity is often used as a proxy for endurance; however, evidence from endurance and exertion trials indicates that they are in fact not consistently related in lizards.

Summary: In the specialist fruit fly Drosophila sechellia, a high-glucose diet impairs gut immune function, leading to a change in gut microbiota and the gut epithelial disorganization structure, and a shortened lifespan.

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