ontogeny
- Ontogenetic scaling of pelvic limb muscles, tendons and locomotor economy in the ostrich (Struthio camelus)
Summary: The ontogenetic scaling of muscle–tendon morphology and tendon material properties suggests maintained or relatively increased muscle force generation, increased elastic energy storage and locomotor economy in adult versus juvenile ostriches.
- Ontogenetic change in predicted acoustic pressure sensitivity in larval red drum (Sciaenops ocellatus)
Summary: Computed tomography imagery in a finite-element model predicts that larval fishes detect acoustic pressure but that this pressure sensitivity declines ontogenetically, likely altering the detection and use of acoustic cues.
- Within-individual behavioural variability and division of labour in social insects
Summary: This Commentary discusses the sources of within-individual behavioural variability in social insects and considers the relationship between colony size and behavioural flexibility.
- The membrane pacemaker hypothesis: novel tests during the ontogeny of endothermy
Summary: The authors examine how tissue lipid composition changes during development, and how dietary lipid manipulation affects basal and peak metabolic rate, providing mixed support for the membrane pacemaker hypothesis.
- Femoral bone perfusion through the nutrient foramen during growth and locomotor development of western grey kangaroos (Macropus fuliginosus)
Summary: In kangaroos, growth is the main determinant of femoral bone blood flow during the in-pouch stage, whereas locomotor activity becomes the dominant factor during the post-pouch stage.
- Maximum thermal limits of coral reef damselfishes are size dependent and resilient to near-future ocean acidification
Summary: Despite a widespread perception that end-of-century ocean acidification will reduce the thermal limits of fishes, we show that critical thermal maxima of coral reef damselfishes are robust to this stressor.
- Multiple sensory modalities used by squid in successful predator evasion throughout ontogeny
Summary: The lateral line analogue of squid contributes to successful escape response at the earliest life stages and continues to increase successful evasion by aiding visual cues in juvenile and adult squid.
- Repeatability of locomotor performance and morphology–locomotor performance relationships
Summary: Repeatability of an individual's performance is necessary for performance evolution. Variation in age and sex affects estimates of repeatability and the contribution of morphology to performance changes with age.
- Beyond body size: muscle biochemistry and body shape explain ontogenetic variation of anti-predatory behaviour in the lizard Salvator merianae
Summary: Juvenile and adult tegus exhibit different anti-predatory strategies at 22.5°C, which can be explained by differences in body size, limb proportions, jaw length and muscle biochemistry.