Induced pluripotent stem cells as a tool for comparative physiology: lessons from the thirteen-lined ground squirrel
Summary: Stem cell techniques could benefit comparative studies of unconventional organisms. As an example, here we describe some key considerations in deriving and utilizing induced pluripotent stem cells from a hibernator.
Surpassing the subitizing threshold: appetitive–aversive conditioning improves discrimination of numerosities in honeybees
Highlighted Article: Appetitive–aversive differential conditioning enables honeybees to learn discrimination of quantities 1–10; however, classic appetitive conditioning does not allow bees to learn this same numerical task.
Summary: Selective cooling of cod brain during whole-animal thermal ramping marginally increases acute upper thermal tolerance, suggesting that direct thermal effects on brain neurons may contribute to the acute upper thermal tolerance.
Summary: Harbour porpoise diving bradycardia is initiated with blowhole submergence rather than apnoea alone, while surface tachycardia is only fully obtained with lung ventilation, yet initiated anticipatorily.
Cardiac influence of the β3-adrenoceptor in the goldfish (Carassius auratus): a protective role under hypoxia?
Summary: β3-ARs are expressed in the goldfish heart with a role in the modulation of cardiac performance under both normoxic and hypoxic conditions.
An appetite for invasion: digestive physiology, thermal performance and food intake in lionfish (Pterois spp.)
Editors' Choice: The relationship between digestive physiology and energetic physiology may play an important role in invasive species' success, demonstrated in invasive lionfish (Pterois spp.) in the context of a warming ocean.
Tackling the Tibetan Plateau in a down suit: insights into thermoregulation by bar-headed geese during migration
Summary: Bar-headed geese maintain a consistent body temperature during their migration across the Tibetan Plateau regardless of altitude experienced.
Maternal food supplementation and perceived predation risk modify egg composition and eggshell traits but not offspring condition
Summary: Experimental evidence of the combined effects of maternal food supplementation and predation risk on egg composition (yolk mass, immune factors and eggshell traits) and offspring condition.
From injury to full repair: nerve regeneration and functional recovery in the common octopus, Octopus vulgaris
Summary: Following sectioning of the octopus pallial nerve, functionality returns within 1–5 months, with no observable impact on behaviour, highlighting the octopus as a valuable model for nerve regeneration among invertebrates.
Thermal tolerance in the urban heat island: thermal sensitivity varies ontogenetically and differs between embryos of two sympatric ectotherms
Summary: Embryos of two lizard species differ in thermal tolerance in ways that correspond with species-specific nest microhabitats and patterns of occupancy throughout the urban matrix.
Social foraging extends associative odor–food memory expression in an automated learning assay for Drosophila melanogaster
Summary: An automated learning and memory assay for walking fruit flies demonstrates that both inter-fly attraction and the duration of odor–food memory expression increase with group size.
Implications of the Sap47 null mutation for synapsin phosphorylation, longevity, climbing proficiency and behavioural plasticity in adult Drosophila
Summary: Sap47 belongs to the conserved, functionally enigmatic Syap1/Sap47 synaptic protein family. Behavioural analysis, longevity studies, phospho-specific immunohistology, electrophysiology and mass spectrometry characterize the function of Sap47 in Drosophila.
The effect of environmental enrichment on behavioral variability depends on genotype, behavior, and type of enrichment
Summary: Behavioral variability of fruit flies is increased in enriched environments, but the effect is overshadowed by genotype-, behavior- and enrichment-specific effects, and their interactions.
Summary: Combining human experiments with computational reinforcement learning models reveals how the nervous system discovers energy optimal gaits.
The osmorespiratory compromise: physiological responses and tolerance to hypoxia are affected by salinity acclimation in the euryhaline Atlantic killifish (Fundulus heteroclitus)
Summary: Salinity acclimation affects hypoxia tolerance in the euryhaline killifish (Fundulus heteroclitus).
Summary: Daily exercise training of zebra finches over many weeks increases the coordination between the enzymatic and non-enzymatic components of their antioxidant system and this reduces the oxidative damage associated with exercise.
Summary: A genetic screen of higher-order neurons in the Drosophila brain identifies a candidate neuronal population that controls regurgitation after food ingestion.