The Journal of Experimental Biology
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#1Alexandra Staikou (A.U.Th.: Aristotle University of Thessaloniki)H-Index: 13
#2Konstantinos Feidantsis (A.U.Th.: Aristotle University of Thessaloniki)H-Index: 13
Last. Basile Michaelidis (A.U.Th.: Aristotle University of Thessaloniki)H-Index: 20
view all 7 authors...
Temperature, a major abiotic environmental factor, regulates various physiological functions in land snails and therefore determines their biogeographical distribution. Thus, species with different distributions may present different thermal tolerance limits. Additionally, the intense reactivation of snail metabolic rate upon arousal from hibernation or aestivation may provoke stress. Land snails, Helix lucorum, display a wide altitudinal distribution resulting in populations being exposed to di...
#1Lucas A. Zena (USP: University of São Paulo)
#2Andreas Ekström (University of Gothenburg)H-Index: 14
Last. Erik Sandblom (University of Gothenburg)H-Index: 29
view all 7 authors...
Coronary arteriosclerosis is a common feature of both wild and farmed salmonid fishes and may be linked to stress-induced cardiac pathologies. Yet, the plasticity and capacity for long-term myocardial restructuring and recovery following a restriction in coronary blood supply is unknown. Here, we analyzed the consequences of acute (3 days) and chronic (from 33 to 62 days) coronary occlusion (i.e., coronary artery ligation) on cardiac morphological characteristics and in vivo function in juvenile...
#1Laura van Rosmalen (UG: University of Groningen)H-Index: 2
#2Roelof A. Hut (UG: University of Groningen)H-Index: 35
Seasonal timing of reproduction in voles is driven by photoperiod. Here we hypothesize that a negative energy balance can modify spring-programmed photoperiodic responses in the hypothalamus, controlling reproductive organ development. We manipulated energy balance by the 'work-for-food' protocol, in which voles were exposed to increasing levels of food scarcity at different ambient temperatures under long photoperiod. We reveal that in common voles (Microtus arvalis) and tundra voles (Microtus ...
#1Eleanor M. Caves (University of Exeter)
#2Fanny de Busserolles (UQ: University of Queensland)H-Index: 13
Last. Laura A. Kelley (University of Exeter)H-Index: 10
view all 3 authors...
Among fishes in the family Poeciliidae, signals such as colour patterns, ornaments, and courtship displays play important roles in mate choice and male-male competition. Despite this, visual capabilities in Poeciliids are understudied, in particular visual acuity, the ability to resolve detail. We used three methods to quantify visual acuity in male and female green swordtails (Xiphophorus helleri), a species in which body size and the length of the male's extended caudal fin ('sword') serve as ...
#1Rose Vl (UH: University of Houston)H-Index: 1
#2Christopher J. Arellano (UH: University of Houston)H-Index: 11
Adults conserve metabolic energy during walking by minimizing the step-to-step transition work performed by the legs during double support and by utilizing spring-like mechanisms in their legs, but little is known as to whether children utilize these same mechanisms. To gain a better understanding, we studied how children (5-6 years) and adults modulate the mechanical and metabolic demands of walking at their preferred speed, across slow (75%), preferred (100%) and fast (125%) step frequencies. ...
For well over 150 years, factors of safety (also known as safety factors) have been a fundamental engineering concept that expresses how much stronger a system is compared with the intended load. The pioneering work of Robert McNeill Alexander in the early 1980s applied this engineering concept to biomechanics. Over the next decade, evidence from comparative biomechanics supported the idea that safety factors are a fundamental principle of animal form and function. In terms of physiology, Jared ...
#1Arthur H. Dewolf (UCL: Université catholique de Louvain)H-Index: 9
#2Yury IvanenkoH-Index: 10
Last. Patrick Willems (UCL: Université catholique de Louvain)H-Index: 22
view all 4 authors...
As the largest extant legged animals, elephants arguably face the most extreme challenge for stable standing. In this study, we investigated the displacement of the centre of pressure of 12 elephants during quiet standing. We found that the average amplitude of the oscillations in the lateral and fore-aft directions was less than 1.5 cm. Such amplitudes for postural oscillation are comparable with those of dogs and other species, suggesting that some aspects of sensorimotor postural control do n...
#1Te K. Jones (Johns Hopkins University)H-Index: 3
#2Kathryne M. Allen (Johns Hopkins University)H-Index: 3
Last. Cynthia F. Moss (Johns Hopkins University)H-Index: 51
view all 3 authors...
Animals that rely on electrolocation and echolocation for navigation and prey detection benefit from sensory systems that can operate in the dark, allowing them to exploit sensory niches with few competitors. Active sensing has been characterized as a highly specialized form of communication, whereby an echolocating or electrolocating animal serves as both the sender and receiver of sensory information. This characterization inspires a framework to explore the functions of sensory channels that ...
#1Andrea Romano (University of Milan)H-Index: 22
#2Cristina Daniela Possenti (University of Milan)H-Index: 9
Last. Marco Parolini (University of Milan)H-Index: 30
view all 6 authors...
Maternally derived hormones induce variation in offspring phenotype, with consequences that can carry over into post-natal life and even into adulthood. In birds, maternal egg corticosterone (CORT) is known to exert contrasting effects on offspring morphology, physiology and behaviour after hatching. However, information on the effects of CORT exposure on pre-hatching embryonic development is limited. We experimentally increased yolk CORT levels in yellow-legged gull (Larus michahellis) eggs, an...
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