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72 results for “fish larvae”
Fig. 3 in Spatial and temporal distribution of fish eggs and larvae in a subtropical coastal lagoon, Santa Catarina State, Brazil
Fig. 3. Mean abundances · 100 m-3 (± sd) of fish eggs and larvae in Ibiraquera Lagoon, by month.
Fig. 1 in Fish larvae from the upper Paraná River: Do abiotic factors affect larval density?
Fig. 1. Map of the upper Paraná River showing the location of the sampling stations.
Data from: Crypsis in the pelagic realm: evidence from exceptionally preserved fossil fish larvae from the Eocene Stolleklint Clay of Denmark
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Temperature reduces fish dispersal as larvae grow faster to their settlement size
<p>1. As species struggle to cope with rising ocean temperatures, temperate marine assemblages are facing major reorganisation. Many benthic species have a brief but critical period dispersing through the plankton, when they are particularly susceptible to variations in temperature. Impacts of rising temperatures can thus ripple through the population with community-wide consequences. However, responses are highly species-specific, making it difficult to discern assemblage-wide patterns in the life histories of different fish species.</p> <p>2. Here we evaluate the responses to temperature in the early life histories of several fish species using otolith reconstructive techniques. We also assess the consequences of future warming scenarios to this assemblage.</p> <p>3. We sampled recent settlers of 9 common species across a temperature gradient in the Mediterranean Sea and obtained environmental data for each individual. Using otolith microstructure we measured early life traits including pelagic larval duration (PLD), growth rate, settlement size, hatching and settlement dates. We used a GLM framework to examine how environmental variables influenced early life history parameters.</p> <p>4. We show that increasing temperature results in considerable reduction in the dispersal potential of temperate fish. We find a nearly universal, assemblage-wide decline in pelagic larval duration (PLD) of between 10-25%. This was because, with increasing temperature, larvae grew quicker to their settlement size. Settlement size itself was less affected by temperature and appears to be an ontogenetically fixed process.</p> <p>5. Given current estimates of ocean warming, there could be an assemblage-wide reduction in larval dispersal of up to 50 km across the Mediterranean, reducing connectivity and potentially isolating populations as waters warm. 06-Jan-2021</p>
Data from: Can larvae of a marine fish adapt to ocean acidification? Evaluating the evolutionary potential of California Grunion (Leuresthes tenuis)
Ocean acidification can reduce the growth and survival of marine species during their larval stages. However, if populations have the genetic capacity to adapt and increase their tolerance of low pH and high pCO2 levels, this may offset the harmful effects of ocean acidification. By combining controlled breeding experiments with laboratory manipulations of seawater chemistry, we evaluated genetic variation in tolerance of ocean acidification conditions for a nearshore marine fish, the California Grunion (Leuresthes tenuis). Our results indicated that acidification conditions increased overall mortality rates of grunion larvae, but did not have a significant effect on growth. Groups of larvae varied widely with respect to mortality and growth rates in both ambient and acidified conditions. We demonstrate that the potential to evolve in response to ocean acidification is best described by considering additive genetic variation in fitness-related traits under both ambient and acidified conditions, and by evaluating the genetic correlation between traits expressed in these environments. We used a multivariate animal model to estimate additive genetic (co)variance in larval growth and mortality rates under both ambient and acidified conditions (low pH/high pCO2). Our results suggest appreciable genetic variation in larval mortality rates (h2Ambient = 0.120; h2Acidified = 0.183; rG = 0.460), but less genetic variation in growth (h2Ambient = 0.092; h2Acidified = 0.101; rG = 0.135). Maternal effects on larval mortality rates accounted for 26-36% of the variation in phenotypes, but maternal effects accounted for only 8% of the variation in growth. Collectively, our estimates of genetic variation and covariation suggest that populations of California Grunion have the capacity to adapt relatively quickly to long-term changes in ocean chemistry.
Fig. 1 in Fig. 2 in Fishing for Tigers: A Method for Collecting Tiger Beetle Larvae Holds Useful Applications for Biology and Conservation
Fig. 1. Degree of dimorphism for all body and leg traits. Trait means ranged from 0.1– 39.6% larger in males than females. Results for tests of significance of difference in trait size are found in Table 1.
Fig. 2 in Fig. 2 in Fishing for Tigers: A Method for Collecting Tiger Beetle Larvae Holds Useful Applications for Biology and Conservation
Fig. 2. Frequency distribution of canonical discriminant scores for male and female Laccophilus maculosus. Female mean 5 0.315, male mean 5 20.587.
Predation of mesopelagic fish on tuna eggs and larvae: fitness benefits of synchronizing spawning with the moon
<p>This repository contains all data and R code used in the research article "Model of mesopelagic fish predation on eggs and larvae shows benefits of tuna spawning under full moon" - https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lno.12465</p><p>Data and code are originally structured in folders and can be found in GitHub - https://github.com/dottmann/moon_light</p>
FIG. 1. Colorado Pikeminnow and Razorback Sucker larvae for this study were selected from 2009 in Otolith Microstructure Analysis Elucidates Spawning and Early Life Histories of Federally Endangered Fishes in the San Juan River
FIG. 1. Colorado Pikeminnow and Razorback Sucker larvae for this study were selected from 2009 to 2017 larval fish collections made in the San Juan River between reach 6, near Farmington, NM, and reach 1, near the terminus of the San Juan River in Lake Powell.
Fig. 2 in Fishing for Tigers: A Method for Collecting Tiger Beetle Larvae Holds Useful Applications for Biology and Conservation
Fig. 2. Mean time required for successful collections of tiger beetle larvae by species and collection methods. Percentage above each bar represents success rate for method.
Fig. 1 in Fishing for Tigers: A Method for Collecting Tiger Beetle Larvae Holds Useful Applications for Biology and Conservation
Fig. 1. Success rate of fishing for tiger beetle larvae (pooled for four species) based on material used within a threeminute time limit.
Datatset of exposure of rotenone and moringa oleifera on larvae of zebra fish
<p>This dataset contains:</p> <p>1. List of tools and utensils used</p> <p>2. Observation result of moringa oleifera</p> <p>3. Observation result of length of zebra fish after exposure </p>
Data from: Modelled drift patterns of fish larvae link coastal morphology to seabird colony distribution
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Data from: DNA sequencing of fish eggs and larvae reveals high species diversity and seasonal changes in spawning activity in the southeastern Gulf of California
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Data from: Can larvae of a marine fish adapt to ocean acidification? Evaluating the evolutionary potential of California Grunion (Leuresthes tenuis)
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Temperature reduces fish dispersal as larvae grow faster to their settlement size
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Data from: Effects of warming rate, acclimation temperature and ontogeny on the critical thermal maximum of temperate marine fish larvae
Most of the thermal tolerance studies on fish have been performed on juveniles and adults, whereas limited information is available for larvae, a stage which may have a particularly narrow range in tolerable temperatures. Moreover, previous studies on thermal limits for marine and freshwater fish larvae (53 studies reviewed here) applied a wide range of methodologies (e.g. the static or dynamic method, different exposure times), making it challenging to compare across taxa. We measured the Critical Thermal Maximum (CTmax) of Atlantic herring (Clupea harengus) and European seabass (Dicentrarchus labrax) larvae using the dynamic method (ramping assay) and assessed the effect of warming rate (0.5 to 9°C h-1) and acclimation temperature. The larvae of herring had a lower CTmax (lowest and highest values among 222 individual larvae, 13.1 – 27.0 °C) than seabass (lowest and highest values among 90 individual larvae, 24.2 – 34.3 °C). At faster rates of warming, larval CTmax significantly increased in herring, whereas no effect was observed in seabass. Higher acclimation temperatures led to higher CTmax in herring larvae (2.7 ± 0.9°C increase) with increases more pronounced at lower warming rates. Pre-trials testing the effects of warming rate are recommended. Our results for these two temperate marine fishes suggest using a warming rate of 3 - 6 °C h-1: CTmax is highest in trials of relatively short duration, as has been suggested for larger fish. Additionally, time-dependent thermal tolerance was observed in herring larvae, where a difference of up to 8°C was observed in the upper thermal limit between a 0.5- or 24-h exposure to temperatures >18°C. The present study constitutes a first step towards a standard protocol for measuring thermal tolerance in larval fish.
FIGURE 9. Benthocometes robustus, larva. ZMUC P77785 in Revision of the bathyal fish genus Benthocometes (Teleostei: Ophidiidae) with a new species from off NW Australia
FIGURE 9. Benthocometes robustus, larva. ZMUC P77785, SL 39. Western Mediterranean.
Fig. 1 in Effect of abiotic variables on fish eggs and larvae distribution in headwaters of Cuiabá River, Mato Grosso State, Brazil
Fig. 1. Location of the sampling sites. 1= Cuiabazinho River (CBZ I, 14º20'13.8"S 55º29'42.5"W); 2= Cuiabazinho River (CBZ II, 14º25'39.1"S 55º34'28.8"W); 3= Água Fina Stream (AFS, 14º25'50.7"S 55º34'14.5"W); 4= Cuiabazinho Stream (CBS, 14º26'13.8"S 55º36'03.2"W); 5= Cuiabazinho River (CBZ III, 14º37'10.1"S 55º49'50.8"W), 6= Triste Stream (TRS, 14º37'18.2"S 55º49'52.2"W); 7= Cuiabazinho River (CBZ IV, 14º39'15.8"S 56º07'52.2"W); 8= Quebó Stream (QBS, 14º39'14.9"S 56º07'49.3"W).
Fig. 5 in Effect of abiotic variables on fish eggs and larvae distribution in headwaters of Cuiabá River, Mato Grosso State, Brazil
Fig. 5. Principal Components Analysis (PCA) of the matrix of environmental variables recorded in the headwaters of the Cuiabá River in November (N), December 2007 (D), January (J), February (F), and March 2008 (M). Numbers following months represent sites: 1=CBZ I, 2=CBZ II, 3=AFS, 4=CBS, 5=CBZ III, 6=TRS, 7=CBZ IV, 8=QBS. Dark symbols represent collections with highest density of ichthyoplankton.
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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.