INSIDE JEB
METHODS & TECHNIQUES
- Development of a vortex generator to perturb fish locomotion
Summary: Development and calibration of a vortex generator to investigate the stiffness of fish fins during natural swimming.
- A novel technique for the precise measurement of CO2 production rate in small aquatic organisms as validated on aeshnid dragonfly nymphs
Summary: In vitro and in vivo validation of a simple respirometry system for simultaneous measurements of oxygen consumption and carbon dioxide production rate, in small aquatic organisms (2 mg wet mass).
RESEARCH ARTICLES
- Warm preconditioning protects against acute heat-induced respiratory dysfunction and delays bleaching in a symbiotic sea anemone
Summary: Changes in mitochondrial function by thermal preconditioning provide some protection to a symbiotic sea anemone against the effects of stressful heating.
- Interspecies comparison of the mechanical properties and biochemical composition of byssal threads
Summary: An interspecies comparison of byssus produced by nine species in different natural environments shows that mechanical properties depends on the interrelationship between morphometric characteristics and their biochemical contents.
- The energetic cost of filtration by demosponges and their behavioural response to ambient currents
Summary: Filter feeding in demosponges is energetically costly, with some species showing active behavioural control over the amount of water they filter under different ambient current speeds.
- The Achilles tendon is mechanosensitive in older adults: adaptations following 14 weeks versus 1.5 years of cyclic strain exercise
Highlighted Article: The stiffness of the aging Achilles tendon increases after 14 weeks of mechanical loading exercise by changing its material and dimensional properties, whereas continuing exercise causes no further adaptive changes.
- Archerfish use their shooting technique to produce adaptive underwater jets
Summary: Archerfish use the same mouth opening maneuver to produce and to adapt aerial and underwater jets.
- Hidden female physiological resistance to male accessory gland substances in a simultaneous hermaphrodite
Summary: The effect of accessory gland proteins transferred on the love-dart of land snails can remain hidden within a species as a result of physiological female resistance to male manipulation.
- The Lombard effect emerges early in young bats: implications for the development of audio-vocal integration
Summary: Two-week-old infant bats produce louder calls in noisy environments.
- Effects of activity, genetic selection and their interaction on muscle metabolic capacities and organ masses in mice
Summary: Organ morphology and biochemistry were altered in response to selective breeding for voluntary wheel running, chronic exercise and interactions as a result of ‘more pain, more gain’ or the evolution of greater phenotypic plasticity.
- Geographic divergence and colour change in response to visual backgrounds and illumination intensity in bearded dragons
Highlighted Article: Background colour and illumination intensity both elicit colour change in bearded dragon lizards, which makes them more similar to local backgrounds.
- Appropriate rearing density in domesticated zebrafish to avoid masculinization: links with the stress response
Summary: High stocking density reduces survival and growth and masculinizes domesticated zebrafish, and this is probably mediated by cortisol through the stress response.
- Lombard effect onset times reveal the speed of vocal plasticity in a songbird
Summary: Canaries are able to rapidly increase the amplitude of their songs to mitigate signal masking by noise, demonstrating high vocal plasticity in this species.
- Metabolic plasticity for subcutaneous fat accumulation in a long-distance migratory bird traced by 2H2O
Summary: A novel and non-lethal tracer method using deuterated water revealed alteration in lipid metabolism of migrant black-tailed godwits subjected to different diets.
- Respiratory mechanics of eleven avian species resident at high and low altitude
Highlighted Article: Work and cost of breathing in 11 species of waterfowl are reported to be lower than previously predicted in birds, but without effect of altitudinal habitat despite mechanical differences in highland species.
- Influence of fatiguing noise on auditory evoked responses to stimuli of various levels in a beluga whale, Delphinapterus leucas
Summary: Investigation of the effects of a fatiguing sound on the hearing of a beluga whale within a wide range of levels of test signals shows that fatiguing noise exposure reduces responses to supra-threshold signals.
- Conspecific aggregations mitigate the effects of ocean acidification on calcification of the coral Pocillopora verrucosa
Summary: Densely aggregated coral colonies can create small-scale refugia from the negative effects of ocean acidification.
- Economic thermoregulatory response explains mismatch between thermal physiology and behaviour in newts
Summary: Digesting newts prefer body temperatures that are optimal for aerobic scope not in absolute terms but relative to the minimum oxygen consumption.
- Functional morphology of tegmina-based stridulation in the relict species Cyphoderris monstrosa (Orthoptera: Ensifera: Prophalangopsidae)
Summary: Using laser Doppler vibrometry in a relict species, evolutionary origins of sound generator features are investigated by comparison of functional morphology between distinct lineages of acoustically calling orthopterans.
- Effects of external strain on the regulation of microtubule sliding induced by outer arm dynein of sea urchin sperm flagella
Summary: Microtubule sliding produced by dynein molecules on glass can be modified flexibly under application of mechanical signals. This self-regulatory activity of dynein would be the basis of flagellar oscillation.
- Swimming and diving energetics in dolphins: a stroke-by-stroke analysis for predicting the cost of flight responses in wild odontocetes
Highlighted Article: Elevated locomotor costs during high-speed stroking by swimming dolphins demonstrate the energetic challenge of escape responses due to anthropogenic noise in the ocean.
- Selective attention in peacocks during assessment of rival males
Summary: Peacocks selectively direct their attention toward the lower display regions of the train during rival assessment in a pattern similar to how peahens direct their attention toward potential mating partners.
- The king of snakes: performance and morphology of intraguild predators (Lampropeltis) and their prey (Pantherophis)
Summary: Higher constriction pressures allow kingsnakes to successfully prey on ratsnakes of similar size despite comparable muscle cross-sectional area and escape performance.
This issue
Other journals from The Company of Biologists
Editorial – The changing of the guard
In his Editorial, Hans Hoppeler announces that he will be stepping down as Editor-in-Chief of JEB in July 2020. He reflects on the history of JEB, why he has enjoyed his tenure as JEB’s Editor-in-Chief and the recent developments in the publishing world.
Editors’ choice – Parental stressor exposure simultaneously conveys both adaptive and maladaptive larval phenotypes through epigenetic inheritance in the zebrafish (Danio rerio)
An oil spill is never a good thing, but Naim Bautista and Warren Burggren have shown that zebrafish can pass on resistance to the damaging effects of an oil-spiked diet to their offspring.
The derivative of force with respect to time does not have a standard term in physics. In their new Commentary, David C. Lin and his colleagues propose that the term ‘yank’ should be used to denote the time derivative of force.
Runners waste energy every time their legs stop swinging, but now a team of scientists from the US and Canada have shown that a springy ankle tether can reduce runners’ energy costs by 6.4%, which is nearly the entire cost of swinging the limbs. Read the full research article here.
Journal of Experimental Biology is pleased to announce a new partnership with Publons! This allows reviewers to easily track and verify every review by choosing to add the review to their Publons profile when completing the review submission form. Publons also makes it simple for reviewers to showcase their peer review contributions in a format that can be included in job and funding applications (without breaking reviewer anonymity). Read the official announcement here!
The Company of Biologists provides grants to fund scientific meetings, workshops and conferences in the fields covered by our journals. Typically, meetings with fewer than 100 people may be granted up to £2,000, increasing up to £6,000 for about 400 people. The next deadline to apply is 28 November 2019.
preLights – preLights reaches 500 posts!
The success of preLights is down to the hard work of our preLighters. Head over to the preLights website to find out more about our most active early-career-researchers.