Energetics of communal roosting in chestnut-crowned babblers: implications for group dynamics and breeding phenology
Highlighted Article: Cooperatively breeding chestnut-crowned babblers save considerable energy by group roosting within enclosed nests; this economy helps explain the species' social dynamics and breeding phenology.
Vision on the high seas: spatial resolution and optical sensitivity in two procellariiform seabirds with different foraging strategies
Summary: Procellariiform seabirds with different nesting and foraging strategies have also evolved predictable differences in their ability to see their prey or other foraging seabirds.
Object approach computation by a giant neuron and its relationship with the speed of escape in the crab Neohelice
Summary: Visually guided behaviors operate in closed loop. In crabs, the information of approaching objects is encoded and conveyed by identified giant neurons to continuously regulate the speed of the escape run.
Actions of sex steroids on kisspeptin expression and other reproduction-related genes in the brain of the teleost fish European sea bass
Summary: Kisspeptins are attributed to be key factors in mediating gonadal steroid feedback in mammalian hypothalamus and in the teleost fish sea bass, suggesting that this property is conserved across vertebrates.
Highlighted Article: Ant groups navigate obstacles with a collective strategy that adapts to obstacle difficulty. Groups begin with simple behaviors; if unsuccessful, they switch to robust behaviors that work for more difficult obstacles.
Summary: A novel metric (PCTmax) is presented for assessing the oxygen sensitivity of upper thermal limits in water-breathing ectotherms based on measurements of critical thermal maxima in marine fishes under hypoxia.
Summary: Flexibility of the 1m-cu resilin joint in bumblebee (Bombus impatiens) wings improves stability in forward flight.
Annual life-stage regulation of lipid metabolism and storage and association with PPARs in a migrant species: the gray catbird (Dumetella carolinensis)
Summary: Changes in energetics related to the migratory cycle span organismal, tissue and molecular endpoints, and these seasonal adjustments involve the PPAR family of nuclear receptors and their target genes.
Highlighted Article: Blade-element analysis and computational fluid dynamics are both effective for analyzing mantis shrimp strike hydrodynamics. Mantis shrimp appendage diversification is strongly impacted by the hydrodynamic consequences of size and kinematics.
The opening–closing rhythms of the subelytral cavity associated with gas exchange patterns in diapausing Colorado potato beetle, Leptinotarsa decemlineata
Summary: Colorado potato beetles are able to close their subelytral cavity tightly and it then serves as a water-saving device.
Summary: The energetic cost of locomotion in a simulated tunnel exceeds that of overground locomotion in two semi-fossorial mammal species (ferrets and degus).
Intracellular regulation of the insect chemoreceptor complex impacts odour localization in flying insects
Summary: The unique signal transduction of the OR complex contributes to insects’ sensitive and efficient olfactory capabilities, supporting the hypothesis that insects evolved a unique chemoreceptor family to accommodate the high-speed demands of flight.
Summary: Within social systems, there are often ‘key’ individuals that are disproportionately active in various tasks; however, the contribution of such individuals may be far from decisive.
Summary: Interactions between the thermal environment, body activity and bimodal respiration show that with rising water temperatures, sea snakes may become more susceptible to fishing-related mortality through reduced apnoeic capacity.
Nitric oxide inhibition of NaCl secretion in the opercular epithelium of seawater-acclimated killifish, Fundulus heteroclitus
Summary: Nitric oxide contributes to the regulation of ion transport in fish predominantly through the sGC/cGMP pathway and S-nitrosation of transport proteins may be an additional mechanism.
The answer is blowing in the wind: free-flying honeybees can integrate visual and mechano-sensory inputs for making complex foraging decisions
Summary: In complex environments, free-flying honeybees are able to integrate both visual and wind-induced mechano-sensory cues to make decisions in a way that is suggestive of integrative processing by the brain.
Highlighted Article: Desert lizards such as thorny devils harvest moisture from different sources using their skin surface. Moist sand seems to be the most routine water source to meet their water demand.
Assessing hydrodynamic space use of brown trout, Salmo trutta, in a complex flow environment: a return to first principles
Summary: New techniques are used to experimentally demonstrate that energy conservation strategies play a key role in brown trout space use.