Summary: Hedenström and Johansson review the way in which the bat's wing structure equips it for efficient and manoeuvrable flight.
Summary: Honeybees have an optimal hair-erection pattern to balance nectar intake and viscous drag.
Variation in early-life telomere dynamics in a long-lived bird: links to environmental conditions and survival
Summary: The environment strongly influences early-life telomere attrition, suggesting that telomere dynamics may underlie cohort effects often observed in natural populations and may mechanistically link early-life stress and later-life performance.
Ammonia excretion in Caenorhabditis elegans: mechanism and evidence of ammonia transport of the Rhesus protein CeRhr-1
Highlighted Article: Hypodermal ammonia excretion in the soil nematode C. elegans involves Na+/K+-ATPase, V-ATPase, carbonic anhydrase, the microtuble network and a functional Rh protein.
Summary: Mice with a titin mutation have lower active muscle stiffness and lower shivering frequencies than predicted. Titin may provide the tuning of shivering frequency by affecting active muscle stiffness.
Coordination between catch connective tissue and muscles through nerves in the spine joint of the sea urchin Diadema setosum
Summary: Coordination between connective tissue and muscles occurs via nerves in the sea-urchin spinal joint.
Summary: Running on uneven terrain leads to decreased positive ankle work and increased metabolic energy expenditure.
Highlighted Article: Penguin lung and air sac volumes are measured by 3D reconstruction from CT scans to evaluate mechanisms of baroprotection, and the effects of these volumes on oxygen storage and buoyancy.
The effects of acute salinity challenges on osmoregulation in Mozambique tilapia reared in a tidally changing salinity
Summary: This study characterizes the differences in osmoregulatory capacity among Mozambique tilapia, Oreochromis mossambicus, reared in freshwater (FW), seawater (SW), or under tidally driven changes in salinity.
Highlighted Article: Right ear advantage is demonstrated behaviorally in an anuran through an orientation task, which shows that differences in bio-significance induce variable responses, suggesting orientations are affected by mating strategy and emotion processing.
Functional characterisation of the chromatically antagonistic photosensitive mechanism of erythrophores in the tilapia Oreochromis niloticus
Summary: Aggregation of tilapia erythrophores in UV and short wavelengths and their dispersal in middle and long wavelengths is mediated by two antagonistic primary photopigments.
Common measures of immune function vary with time of day and sampling protocol in five passerine species
Summary: Measures of innate immune function vary with (1) handling stress over short time periods typical of field sample collection, and (2) the time of day that an individual is sampled.
Summary: Cold-acclimated juncos exhibit elevated thermogenic capacities and transcriptomic signatures indicating enhanced oxygen delivery and increased transport and β-oxidation of fatty acids.
Reproduction potentiated in nematodes (Caenorhabditis elegans) and guppy fish (Poecilia reticulata) by adding a synthetic peptide to their aqueous environment
Summary: A synthetic hexamer (6mer) peptide has been identified that enhanced fecundity in invertebrates (nematodes) and vertebrates (guppy fish), seemingly via antagonism of an unidentified endogenous reproductive inhibitor.
Summary: Fish exposed to streamwise vorticity increase energy consumption on average by 6%, likely due to spilling events and subsequent recovery, which were much more frequent under vorticity.
Nutrient balancing of the adult worker bumblebee (Bombus terrestris) depends on the dietary source of essential amino acids
Summary: The essential amino acid profile of the bumblebee diet influences regulation of the amount of both protein and carbohydrate consumed.
Summary: Rainbow trout in Pemberton Freshwater Research Centre, Western Australia, demonstrated their impressive thermal performance in terms of cardiorespiratory function.