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50 results for “Swimming performance”
Endurance swimming performance and physiology of juvenile Green Sturgeon (Acipenser medirostris) at different temperatures, CA, 2022
This dataset provides information on the endurance swimming performance and physiological responses of juvenile Green Sturgeon (Acipenser medirostris), reared and tested at the University of California, Davis, in 2022. Fish were acclimated to two temperature treatments (13°C and 18°C) for 14 days prior to swimming trials. Endurance tests were conducted at 47–53 days post-hatch (DPH) in modified swim tunnels at fixed water velocities (25–55 cm s⁻¹) to measure time-to-fatigue (End.min), station-holding behavior (Station_holding), and swimming type (Swim.type). Fish morphometrics (e.g., weight, fork length, total length) were recorded before trials. Post-swim physiological analyses included whole-body measurements of cortisol, glucose, lactate, and protein. Tissue homogenates were processed to determine concentrations normalized to fish weight (e.g., Cortisol_ng_g, Glucose_ug_g, Lactate_ug_g). Standard curves showed high assay linearity (R² > 0.98) and low variability (CV < 10%). This dataset contributes to understanding sturgeon endurance and physiological stress under different environmental conditions, providing insights into their resilience to temperature and flow changes relevant to river management and conservation efforts. Variables include: species, developmental stage (DPH), rearing and trial conditions (tank, temperature, velocity), fish morphometrics (weight, fork length, total length), and physiological metrics (cortisol, protein, glucose, and lactate).
Endurance swimming performance and physiology of juvenile sturgeon at different temperatures, 2022-2024
Endurance swimming trials were conducted on both Green Sturgeon (Acipenser medirostris) and White Sturgeon (Acipenser transmontanus) across multiple size classes to assess the effects of temperature and velocity on swimming performance. Fish were exposed to various water temperatures for at least 14 days and swam at fixed-water velocities (cm/s) in controlled swim tunnels. Data were collected on parameters such as species, size class, trial temperature, velocity, recovery time, time-to-fatigue, swim type classifications, and whether the trials were completed. Additional metadata included fish morphometrics such as fork length, total length, weight, and trial dates, enabling comparisons across species, size, and treatment conditions. Physiological responses were measured post-swimming to evaluate the impacts of endurance trials on the smallest size class of Green Sturgeon (5cm fork length): - In 2022, whole-body cortisol, glucose, and lactate concentrations were measured immediately following endurance trials (0 min recovery). - In 2023, recovery dynamics were incorporated, with physiological responses assessed at multiple time points (0 min, 15 min, 30 min, and 60 min post-trial). - In 2022 and 2023 the baseline physiological metrics (whole-body cortisol, glucose, and lactate concentrations) of control fish (not subjected to swimming trials) were measured across all temperatures, years, species, and size classes. This dataset provides information on sturgeon swimming performance under varied temperature conditions, as well as the associated physiological stress responses, offering valuable insights into their endurance capabilities and recovery processes. The findings can inform conservation strategies, habitat management, and aquaculture practices for these ecologically and economically important species.
High water temperature significantly influences swimming performance of New Zealand migratory species
<p>Our study examined how temperature variations affect critical swimming speeds of four migratory species. Higher temperatures (26°C) significantly reduced swimming speeds for three species, emphasising the need for fish passage solutions that consider temperature fluctuations. This is crucial for habitat restoration and freshwater fish preservation, especially in a changing climate. </p>
Dataset: Latham Group, Inc. (SWIM) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Fig. 8 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 8. Scatterplot of the relationship between time to fatigue (min) and percent fatigued for piaus of three different speed classes (lines represent fit of the models for each size class).
Fig. 7 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 7. Mean (± standard deviation – SD; minimum – Min; and Maximum – Max) values of prolonged speed (length/s) per fatigue time (min/10) for the piau Leporinus reinhardti.
Fig. 6 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 6. Mean (± standard deviation – SD; minimum – Min; and Maximum – Max) values of time to fatigue (min) per speed class (lengths/s) for piau Leporinus reinhardti.
Fig. 5 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 5. Curves representing the relationship between critical speed (m/s) and length (m) for the piau at different temperatures, compared to two salmonids (Salmo salar and Oncorhynchus nerka).
Fig. 4 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 4. Curves representing the relationship between critical swimming speed (m/s) and length (m) for the piau (continuous line in the squares on the top left of the figure) and some species from the temperate zone. Full names of some species are given in Table 2).
Data from: Form-function relationships within species are uncoupled from those across species in swimming and jumping performance in arboreal frogs
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Maternal food restriction during pregnancy affects offspring development and swimming performance in a placental live-bearing fish
<p>How pregnant mothers allocate limited resources to different biological functions such as maintenance, somatic growth, and reproduction can have profound implications for early life development and survival of offspring. Here we examined the effects of maternal food restriction during pregnancy on offspring in the matrotrophic (i.e. mother-nourishment throughout gestation) live-bearing fish species <em>Phalloptychus januarius</em> (Poeciliidae). We fed pregnant females either with a 'low-food' or 'high-food' ration for six weeks and quantified the consequences for offspring size and body fat at birth and one week after birth. We further measured fast-start escape performance of offspring at birth, as well as swimming kinematics during prey capture at zero, two, and seven days after birth. We found that the length of maternal food restriction during pregnancy negatively affected offspring dry mass and lean dry mass at birth, as well as body fat gain during the first week after birth. Moreover, it impacted the locomotor performance of offspring during prey capture at, and during the first week after, birth. We did not observe an effect of food restriction on fast-start escape performance of offspring. Our study suggests that matrotrophic poeciliid fish are maladapted to unpredictably fluctuating resource environments, because sudden reductions in maternal food availability during pregnancy result in smaller offspring with slower postnatal body fat gain and an inhibition of postnatal improving swimming skills during feeding, potentially leading to lower competitive abilities after birth.</p>
Functional consequences of phenotypic variation between locally adapted populations: swimming performance and ventilation in extremophile fish
<p>Natural selection drives the evolution of traits to optimize organismal performance, but optimization of one aspect of performance can often influence other aspects of performance. Here, we asked how phenotypic variation between locally adapted fish populations affects locomotion and ventilation, testing for functional trade-offs and trait-performance correlations. Specifically, we investigated two populations of livebearing fish (<em>Poecilia mexicana</em>) that inhabit distinct habitat types (hydrogen-sulfide-rich springs and adjacent nonsulfidic streams). For each individual, we quantified different metrics of burst swimming during simulated predator attacks, steady swimming, as well as gill ventilation. Coinciding with predictions, we documented significant population differences in all aspects of performance, with fish from sulfidic habitats exhibiting higher steady swimming performance and higher ventilation capacity, but slower burst swimming. There was a significant functional trade-off between steady and burst swimming, but not between different aspects of locomotion and ventilation. While our findings about population differences in locomotion performance largely parallel the results from previous studies, we provide novel insights about how morphological variation might impact ventilation and ultimately oxygen acquisition. Overall, our analyses provided insights into the functional consequences of previously documented phenotypic variation, which will help to disentangle the effects of different sources of selection that may coincide along complex environmental gradients.</p>
Fig. 2 in Swimming performance of the migratory Neotropical fish Leporinus reinhardti (Characiformes: Anostomidae)
Fig. 2. Number of tested fish per total length classes used to determine prolonged speed.
Survival and malformations, swimming performance and tadpole traits
<p>Targeted gene flow (TGF) could bolster the adaptive potential of isolated populations threatened by climate change, but could also lead to outbreeding depression. Here, we explore these possibilities by creating mixed- and within-population crosses in a terrestrial-breeding frog species threatened by a drying climate. We reared embryos on wet and dry soils and quantified fitness-related traits upon hatching. TGF produced mixed outcomes in hybrids which depended on crossing direction (origin of gametes from each sex). North-south crosses led to low embryonic survival if eggs were of a southern origin, and high malformation rates when eggs were from a northern population. Conversely, east-west crosses led to one instance of hybrid vigour, evident by increased fitness and desiccation tolerance of hybrid offspring relative to offspring produced from within-population crosses. These contrasting results highlight the need to experimentally evaluate the outcomes of TGF for focal species across generations prior to implementing management actions.<b> </b></p>
Data from: Functional Frogs: Using swimming performance as a model to understand natural selection and adaptations
<p>The 'Functional Frogs' 5E lesson plan is an outcome of a Research Experience for Teachers (RET) program funded by the National Science Foundation (NSF). The NSF project integrates research on swimming locomotion in frogs with broader goals of improving science education. The aim of this RET program was to increase scientific literacy in secondary school teachers in Oklahoma, so that they can transfer knowledge from academic research experience to the classroom and thus improve their students' understanding of science. In the this lesson, we focus primarily on comparing the peak velocity of five species of frogs, guiding students to collect data from videos of frogs swimming. The students then make evidence-based interpretations about the morphological traits that may underlie differences in swimming velocity across species. The five species differ both in morphology and ecology, with some inhabiting the aquatic environment more than others. Therefore, the lesson helps guide students through important steps of the scientific method to achieve a greater understanding of how adaptations arise in nature through examining variation in ecology, morphology, and locomotor performance.</p>
Survival and malformations, swimming performance and tadpole traits
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Data from: Functional Frogs: Using swimming performance as a model to understand natural selection and adaptations
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Functional consequences of phenotypic variation between locally adapted populations: swimming performance and ventilation in extremophile fish
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Adult predation shapes the evolution of swimming performance in guppies (Poecilia reticulata)
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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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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.