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464 results for “Swimming”
Pectoral fin kinematics and motor patterns are shaped by fin ray mechanosensation during steady swimming in Scarus quoyi
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Data from: Tireless travellers: Sea turtles swim continuously during long-distance movements
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Functional consequences of phenotypic variation between locally adapted populations: swimming performance and ventilation in extremophile fish
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Echinoderm sperm swimming and fertilization
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Adult predation shapes the evolution of swimming performance in guppies (Poecilia reticulata)
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Data from: Integration between swimming and feeding evolves repeatedly in Trinidadian guppies and aligns with suction-feeding fishes
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Individual variation in marine larval-fish swimming speed and the emergence of dispersal kernels
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Dynamic color change in the grouper Variola louti during interspecific interactions and swimming
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Data from: Optimization of swim depth across diverse taxa during horizontal travel
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Maternal food restriction during pregnancy affects offspring development and swimming performance in a placental live-bearing fish
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Quantification of flagellar gait changes with combined shape mode analysis and swimming simulations
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Swimming and defense - competing needs across ontogeny in armored fishes (Agonidae)
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Rocky mountain sculpin swimming activity in a three-chambered flume
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Phylogenomic analysis and morphological data suggest left-right swimming behavior evolved prior to the origin of the pelagic Phylliroidae (Gastropoda: Nudibranchia)
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The sensory basis of schooling by intermittent swimming in the rummy-nose tetra (Hemigrammus rhodostomus) -- [Data analysis]
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Bending moments in swimming fish
<p>Most fish swim with body undulations that result from fluid-structure interactions between the fish's internal tissues and the surrounding water. Gaining insight into these complex fluid structure interactions is essential to understand how fish swim. To this end, we developed a dedicated experimental-numerical inverse dynamics approach to calculate the lateral bending moment distributions for a large-amplitude undulatory swimmer that moves freely in 3D space. We combined automated motion tracking from multiple synchronised high-speed video sequences, computation of fluid-dynamic stresses on the swimmer's body from computational fluid dynamics, and bending-moment calculations using these stresses as input for a novel beam model of the body. The bending moment, which represent the system's net actuation, varies over time and along the fish's central axis due to muscle actions, passive tissues, inertia, and fluid dynamics. Our 3D analysis of 113 swimming events of zebrafish larvae ranging in age from 3 to 12 days after fertilisation shows that these bending moment patterns are not only relatively simple but also strikingly similar throughout early development, and from fast starts to periodic swimming. This suggests that fish larvae may produce and adjust swimming movements relatively simply, yet effectively, while restructuring their neuromuscular control system throughout their rapid development.</p>
Data: Effects of seismic airgun playbacks on swimming patterns and behavioural states of Atlantic cod in a net pen
<p>Data abstract:</p> <p>We tracked individual fish using acoustic telemetry and exposed them to sound. Here, we provide (1) the raw acoustic tag detections, (2) the filtered/processed tag detections which served as an input for YAPS (Yet Another Positioning Solver), (3) the positions of the hydrophones (acoustic tag receivers), and (4) the positions of the fish (output of YAPS) and other relevant covariates (sun elevation, tide and treatment period).</p> <p> </p> <p>Paper abstract:</p> <p>Anthropogenic sound can affect fish behaviour and physiology which may affect their well-being. However, it remains a major challenge to translate such effects to consequences for fitness at an individual and population level. For this, energy budget models have been developed, but suitable data to parametrize these models are lacking. A first step towards such parametrization concerns the objective quantification of behavioural states at high resolution. We experimentally exposed individual Atlantic cod (<em>Gadus morhua</em>) in a net pen to the playback of seismic airgun sounds. We demonstrated that individual cod in the net pen did not change their swimming patterns immediately at the onset of the sound exposure. However, several individuals changed their time expenditure in three different behavioural states during the 1 h exposure. This may be suitable input for energy budget models that allow predictions about fitness consequences of acoustic disturbance.</p> <p> </p> <p>Paper reference:</p> <p>Hubert, J., Campbell, J. A., Slabbekoorn, H. (2020). Effects of seismic airgun playbacks on swimming patterns and behavioural states of Atlantic cod in a net pen. <em>Mar. Pollut. Bull.</em> <strong>160</strong>, 111680. DOI:10.1016/j.marpolbul.2020.111680</p>
Automated flow control of a multi-lane swimming chamber for small fishes indicates species-specific sensitivity to experimental protocols
<p>In fishes, swimming performance is considered an important metric to measure fitness, dispersal, and migratory abilities. Swimming performance of individual larval fishes is often integrated into models to make inferences on how environmental parameters affect population-level dynamics (e.g., connectivity). However, little information exists regarding how experimental protocols affect the swimming performance of marine fish larvae. In addition, the technical setups used to measure larval fish swimming performance often lack automation and accurate control of water quality parameters and flow velocity. In this study, we automated the control of multi-lane swimming chambers for small fishes by developing an open-source algorithm. This automation allowed us to execute repeatable flow scenarios and reduce operator interference and inaccuracies in flow velocity typically associated with manual control. Furthermore, we made structural modifications to a prior design to reduce areas of lower flow velocity. We then validated the flow dynamics of the new chambers using computational fluid dynamics and particle tracking software. The algorithm provided accurate alignment between set and measured flow velocities and we used it to test whether faster critical swimming speed (<i>U</i><sub>crit</sub>) protocols (i.e., shorter time intervals and higher velocity increments) would increase <i>U</i><sub>crit</sub> of early life stages of two tropical fish species (4-10 mm standard length). The <i>U</i><sub>crit</sub> of barramundi (<i>Lates calcarifer</i>) and cinnamon anemonefish (<i>Amphiprion melanopus</i>) increased linearly with fish length, but in cinnamon anemonefish, <i>U</i><sub>crit</sub> started to decrease upon metamorphosis. Swimming protocols using longer time intervals (>2.5 times increase) negatively affected <i>U</i><sub>crit</sub> in cinnamon anemonefish but not in barramundi. These species-specific differences in swimming performance highlight the importance of testing suitable <i>U</i><sub>crit</sub> protocols prior to experimentation. Automated control of flow velocity will create more accurate and repeatable data on swimming performance of larval fishes. Integrating refined measurements into individual-based models will support future research on the effects of environmental change.</p>
Data from: Polymorphism and multiple correlated characters: do asymmetry flatfish morphs also differ in swimming performance and metabolic rate?
1. Phenotypic polymorphisms often differ in multiple correlated traits including morphology, behavior, and physiology, all of which can affect performance. How selection acts on these suites of traits can be complex and difficult to discern. Starry flounder (Platichthys stellatus) is a pleuronectid flatfish that exhibits rare polymorphism for the direction of eye migration and resulting whole-body asymmetry. P. stellatus asymmetry morphs differ subtly in several anatomical traits, foraging behavior, and stable isotope signatures, suggesting they may be ecologically segregated, yet performance and metabolic differences are unknown. 2. Here we tested the hypothesis that sinistral and dextral P. stellatus asymmetry morphs diverge in performance and routine metabolic rate (RMR) by comparing prolonged swimming endurance (time to exhaustion at a constant swimming speed), fast-start swimming velocity and acceleration, and rate of oxygen consumption. Based on subtle morphological differences in caudal tail size, we expected sinistral P. stellatus to have superior prolonged swimming endurance relative to dextral fish, but inferior fast-start performance. 4. Sinistral P. stellatus exhibited both significantly greater prolonged swimming performance and fast-start swimming performance. However, sinistral P. stellatus also exhibited greater RMR, suggesting that their general swimming performance could be enhanced by an elevated metabolic rate. 5. Divergence between P. stellatus asymmetry morphs in swimming performance and metabolic rates contributes to growing evidence of ecological segregation between them, as well as our understanding of possible ecological consequences of asymmetry direction in flatfishes. These data provide an example of the complexity of polymorphisms associated with multiple correlated traits in a rare case of asymmetry polymorphism in a marine flatfish species.
Data from: Diving into divergence: differentiation in swimming performances, physiology and gene expression between locally-adapted sympatric cichlid fishes
<p>Sympatric speciation occurs without strict vicariance and is thought to often be driven by ecological specialization of subpopulations that eventually diverge genetically and phenotypically. Distinct morphologies between sympatric populations occupying different niches have been interpreted as such differentiating adaptive phenotypes, yet differences in performance and thus adaptiveness between them were rarely tested. Here, we investigated if divergent body shapes of two sympatric crater lake cichlid species from Nicaragua, one being a shore-associated (benthic) species while the other prefers the open water zones (limnetic), affect cruising and sprinting swimming abilities - performances particularly relevant to their respective lifestyles. Furthermore, we investigated species differences in oxygen consumption across different swimming speeds and compare gene expression in gills and white muscle at rest and during exercise. We found a superior cruising ability in the limnetic <i>Amphilophus zaliosus</i> compared to the benthic <i>A. astorquii</i>, while sprinting was not different, suggesting that their distinct morphologies affect swimming performance. Increased cruising <a>ability in <i>A. zaliosus</i> was however linked</a> to a higher oxygen demand, during activity (but not rest), indicating different metabolic rates during exercise - a hypothesis supported by coinciding gene expression patterns of gill transcriptomes. We identified differentially expressed genes linked to swimming physiology, regulation of swimming behaviour and oxygen intake. A combination of physiological and morphological differences may thus underlie adaptations to these species' distinct niches. This complex ecological specialization likely resulted in morphological and physiological trade-offs that contributed to the rapid establishment and maintenance of divergence with gene flow.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.