Issues

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.

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.

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.

Summary: Reduced fecundity is observed in zebra finches subjected to increased workload during reproduction, providing evidence for a physiological underlying mechanism.

Summary: Coronary perfusion improves cardiac performance during hypoxia and warming, with benefits for hypoxia and heat tolerance.

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.

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.

Summary: Larger genomes are associated with a plastic reduction of water loss rates in temperate terrestrial lungless salamanders exposed to warm temperatures.

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.

Summary: Experiments demonstrate that tool type, nest-substrate presence and speed all affect the energetics of avian egg puncture in a naturalistic setting.

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.

Summary: Manipulation of OX1R activation reveals an important role for ORXergic signalling in modulating respiratory motor responses to hypercapnia and hypoxia in developing tadpoles.