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57 results for “marine dispersal”
Evaluating the boundaries of marine biogeographic regions of the Southwestern Atlantic using halacarid mites (Halacaridae), meiobenthic organisms with a low dispersal potential
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Data from: Reduced genetic diversity and increased reproductive isolation follow population-level loss of larval dispersal in a marine gastropod
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Data from: Effective dispersal of Caribbean reef fish is smaller than current spacing among marine protected areas
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Parentage analyses identify local dispersal events and sibling aggregations in a natural population of Millepora hydrocorals, a free-spawning marine invertebrate
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Data from: Exploring potential establishment of marine rafting species after transoceanic long-distance dispersal
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Genetic structure and dispersal in peripheral populations of a marine fish (Pacific cod, Gadus macrocephalus) and their importance for adaptation to climate change
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Data from: Genotype by sequencing identifies natural selection as a driver of intraspecific divergence in Atlantic populations of the high dispersal marine invertebrate, Macoma petalum
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Data from: Collective dispersal leads to variance in fitness and maintains offspring size variation within marine populations
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Data from: Tsunami-driven rafting: transoceanic species dispersal and implications for marine biogeography
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Data from: The evolution of marine larval dispersal kernels in spatially structured habitats: analytical models, individual-based simulations, and comparisons with empirical estimates
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Data from: Can novel genetic analyses help to identify low-dispersal marine invasive species?
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Data from: Active buoyancy adjustment increases dispersal potential in benthic marine animals
1. While the study of dispersal and connectivity in the ocean typically centers on pelagic species and planktonic larval stages of benthic species, the present work explores an overlooked locomotor means in post-settlement benthic stages that redefines their dispersal potential. 2. Members of the echinoderm class Holothuroidea colonize a diversity of marine environments worldwide, where they play key ecological and economical roles, making their conservation a priority. Holothuroids are commonly called sea cucumbers or sea slugs to reflect their slow movements and are assumed to disperse chiefly through pelagic larvae. 3. The present study documents and explores their unexpected ability to actively modify their buoyancy, leading them to tumble or float at speeds orders of magnitudes faster than through benthic crawling. Two focal species representing different taxonomic orders, geographic distributions and reproductive strategies were studied over several years. 4. Active buoyancy adjustment (ABA) was achieved through a rapid increase in seawater to flesh ratio by up to 740%, leading to bloating, and simultaneously detachment from the substrate. It occurred as early as 6 months post settlement in juveniles and was recorded in wild adult populations. In experimental trials, ABA was triggered by high conspecific density, decreasing salinity and increasing water turbidity. Based on field video footage, ABA-assisted movements generated speeds of up to 90 km d-1. 5. These findings imply that displacement during planktonic larval stages may not supersede the locomotor capacity of benthic stages, challenging the notion of sedentarity. Combining the present results and anecdotal reports, ABA emerges as a generalized means of dispersal among benthic animals, with critical implications for worldwide management and conservation of commercially and ecologically significant species.
Figure 2 in Ancient DNA from the extinct New Zealand grayling (Prototroctes oxyrhynchus) reveals evidence for Miocene marine dispersal
Figure 2. Time-calibrated Bayesian phylogeny of the Osmeriformes (Retropinnidae and Osmeridae) constructed from first and second codon positions of all 13 mitochondrial protein coding genes. 95% highest probability density (95% HPD) of the age estimate for each node is indicated by horizontal grey bars, with Bayesian posterior probabilities of 1.0 represented by white circles (otherwise values are reported). The x-axis represents time in millions of years before present (Mya). Red circles denote phylogenetic position and age of described retropinnid fossil material: Prototroctes modestus and P. vertex (18.7–15.9 Myr; Schwarzhans et al., 2011), Navidadichthys mirus (18–17 Myr; Schwarzhans et al., 2021), Prototroctes oxyrhynchus (0.71–0.62 Myr; McDowall et al., 2006) – we also indicate Speirsaenigma lindoei (57 Myr; Wilson & Williams, 1991), which was used to constrain the minimum age of crown Osmeridae. Timing of relevant geological events, such as rifting of the Zealandian and Australian continental blocks (Cooper & Millener, 1993) and maximum marine inundation (i.e. 'Oligocene drowning'; Mildenhall et al., 2014) are highlighted. Continental distribution of retropinnid lineages are indicated by outline maps. Extinct taxa are denoted †.
Data from: Active buoyancy adjustment increases dispersal potential in benthic marine animals
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Data from: Asymmetric oceanographic processes mediate connectivity and population genetic structure as revealed by RADseq in a highly dispersive marine invertebrate (Parastichopus californicus)
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Code and data used in "Designing marine reserve networks to mitigate larval dispersal volatility with the connectivity portfolio effect"
<p>This repository contains the code and data used in "Designing marine reserve networks to mitigate larval dispersal volatility with the connectivity portfolio effect".</p> <p>The files have been placed inside a .rar to maintain the file structure necessary to run Marxan correctly.</p> <p>The main file to run the analyses is "Comparing spatial conservation prioritisation run.R" which uses functions from "Comparing spatial conservation prioritisation functions.R".</p> <p>The main input files are located in data01.Rdata, data02.Rdata, and data03.Rdata, which contain 1. a data frame of planning unit centroids, sizes, and amount of reef habitat, 2. a subset of planning unit data as a matrix, 3-14. migration, probability, and flow larval dispersal matrices, 15-18. larval release dates, 19-34 indices of Oceanic nino index (ONI), El Nino Modoki index (MOD), Dipole Mode Index (DMI), and Pacific Decadal Oscillation (PDO) of coral trout, snapper, rabbitfish, and octopus.</p> <p> </p>
Designing marine reserve networks to mitigate larval dispersal volatility with the connectivity portfolio effect - DATA
<p>Underlying data for "Designing marine reserve networks to mitigate larval dispersal volatility with the connectivity portfolio effect" found at</p> <p>.mat files are annual larval dispersal connectivity matrices for coral trout, snapper, rabbitfish, and octopus, in the province of Southeast Sulawesi, from biophysical dispersal models.</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)
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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.