Summary: The essential omega-3 and omega-6 fats differ in their physiological effects. Dietary balance of omega fats influences membrane composition and animal function via effects on both physical membrane properties and lipid signalling pathways.
Adult neurogenesis in the central nervous system of teleost fish: from stem cells to function and evolution
Summary: This article reviews adult neurogenesis in the central nervous system of teleost fish, a phenomenon that is more prominent in this taxon than in any other among vertebrates.
Summary: Mantis shrimp can identify an object by its shape and seem to use the shape of an object over its color when recognizing it.
Summary: Whether jumping spiders redirect their moveable, high acuity principal eyes to newly appearing stimuli detected by the secondary eyes is flexible and depends on characteristics of the stimuli.
Summary: The critical oxygen pressure is a measure of physiological oxygen supply capacity, not environmental hypoxia tolerance.
Editor's Choice: Mantis shrimp develop spring-latch mechanisms in their raptorial appendages at the larval phase when they begin eating. Their transparent appendages enable visualization of the elastic mechanisms underlying their strikes, with angular kinematics similar to adults.
Highlighted Article: We examined shooting-associated fin movement in archerfish, observing that their fin maneuvers are tightly coupled to shooting, particularly a rapid forward flap of the pectoral fins that sets in just before onset of the jet.
Sex-specific energy management strategies in response to training for increased foraging effort prior to reproduction in captive zebra finches
Summary: Experimentally increased foraging effort and reproduction affects overall daily energy expenditure in zebra finches and provides evidence for sex-specific differences in energy management strategies.
Physiological adjustments to high foraging effort negatively affect fecundity but not final reproductive output in captive zebra finches
Summary: Reduced fecundity is observed in zebra finches subjected to increased workload during reproduction, providing evidence for a physiological underlying mechanism.
Size, shape and orientation of macro-sized substrate protrusions affect the toe and foot adhesion of geckos
Summary: The compliant toes and feet of geckos possess high adaptability to macroscale roughness of varying geometries, adding to our knowledge of substrate-dependent attachment on nanoscale and microscale rough substrates.
Mitochondrial physiology and responses to elevated hydrogen sulphide in two isogenic lineages of an amphibious mangrove fish
Highlighted Article: We present functional differences in mitochondrial physiology between isogenic lineages of an amphibious, mangrove fish uniquely adapted to environmental sulphide. We observed functional divergences, possibly facilitating colonization of extreme environments.
Genome size influences adaptive plasticity of water loss, but not metabolic rates, in lungless salamanders
Summary: Larger genomes are associated with a plastic reduction of water loss rates in temperate terrestrial lungless salamanders exposed to warm temperatures.
Effects of Na+ channel isoforms and cellular environment on temperature tolerance of cardiac Na+ current in zebrafish (Danio rerio) and rainbow trout (Oncorhynchus mykiss)
Summary: The better heat resistance of the sodium ion current of zebrafish cardiac myocytes compared with rainbow trout cardiac myocytes is based on the kinetically slow isoform of the sodium channel.
Nest substrate and tool shape significantly affect the mechanics and energy requirements of avian eggshell puncture
Summary: Experiments demonstrate that tool type, nest-substrate presence and speed all affect the energetics of avian egg puncture in a naturalistic setting.
Characterization of Halyomorpha halys TAR1 reveals its involvement in (E)-2-decenal pheromone perception
Summary: RNAi-mediated downregulation of the type 1 tyramine receptor gene TAR1 reveals its involvement in (E)-2-decenal pheromone perception in Halyomorpha halys.
Summary: The crab Neohelice granulata can be conditioned in a one-trial place preference task using a non-neutral stimulus. This long-term memory is dependent on protein synthesis.
Orexin-A inhibits fictive air breathing responses to respiratory stimuli in the bullfrog tadpole (Lithobates catesbeianus)
Summary: Manipulation of OX1R activation reveals an important role for ORXergic signalling in modulating respiratory motor responses to hypercapnia and hypoxia in developing tadpoles.