Summary: The mechanisms of epithelial transport and the subsequent use of dissolved amino acids in aquatic animals are discussed, highlighting key knowledge gaps.
Field physiology in the aquatic realm: ecological energetics and diving behavior provide context for elucidating patterns and deviations
Summary: We use diving marine mammals to explore how deviations from general patterns provide insight into the importance of ecological context, which can only be examined in the field.
It's cool to be stressed: body surface temperatures track sympathetic nervous system activation during acute stress
Summary: Body surface temperature dynamics during acute stress tracked sympathetic nervous system activation. Consequently, sympathetic activity can be inferred non-invasively using infrared thermal imaging, overcoming many limitations of current measurement techniques.
Moderate heat stress-induced sterility is due to motility defects and reduced mating drive in Caenorhabditis elegans males
Summary: Heat-stressed Caenorhabditis elegans males show motility defects and a reduction in mate-searching behavior, potentially linked to changes in sensing satiation, resulting in a dramatic reduction in reproductive success.
Exploring the adaptability of the secondary structure of mRNA to temperature in intertidal snails based on SHAPE experiments
Summary: The secondary structure of cytosolic malate dehydrogenase (cMDH) mRNA of three intertidal snail species shows differences in thermal stability, which may be linked to snail geographical distribution.
Observations on neurophysiological pattern and behavioural traits as death-feigning mechanism in Eucryptorrhynchus scrobiculatus (Coleoptera: Curculionidae)
Summary: Evaluation of the physiological response to death feigning in Eucryptorrhynchus scrobiculatus indicates that neurotransmitter variation in the weevil's brain plays a key role in the regulation of death-feigning duration.
Contrast sensitivity, visual acuity and the effect of behavioural state on optokinetic gain in fiddler crabs
Summary: The optokinetic gain of fiddler crabs that were free to rotate was significantly higher than that of crabs that were restrained.
Higher-order dialectic variation and syntactic convergence in the complex warble song of budgerigars
Summary: Budgerigars change the sequence of their songs as flocks associate and dissociate, to convey information about flock identity.
Hydration and evaporative water loss of lizards change in response to temperature and humidity acclimation
Summary: Acclimation to different humidity and temperature treatments drives plasticity in cutaneous evaporative water loss and related changes in plasma osmolality, hematocrit, and body mass in lizards.
Limits to sustained energy intake. XXXIII. Thyroid hormones play important roles in milk production but do not define the heat dissipation limit in Swiss mice
Summary: Thyroid hormones are necessary to maintain sustained energy intake and milk energy output in Swiss mice; however, they do not define the upper limit to sustained energy intake and milk energy output at peak lactation.
Beam theory predicts muscle deformation and vertebral curvature during feeding in rainbow trout (Oncorhynchus mykiss)
Summary: Direct measurements of strain and vertebral curvature throughout the trout body confirm the epaxial muscles experience orthogonal strain gradients during feeding.
Respirometry reveals major lineage-based differences in the energetics of osmoregulation in aquatic invertebrates
Summary: The influence of salinity on metabolic rates of freshwater invertebrates differs, perhaps as a result of evolutionary history.
Summary: Frequent high cyclic mechanical loading of a tendon over a short period of time may diminish the tendon's tolerance to high tensile loading and predispose it to overuse injury.