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87 results for “dispersal evolution”
Data from: Dispersal evolution in the presence of Allee effects can speed up or slow down invasions
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Data from: Sex differences in dispersal syndrome are modulated by environment and evolution
Dispersal syndromes (i.e. suites of phenotypic correlates of dispersal) are potentially important determinants of local adaptation in populations. Species that exhibit sexual dimorphism in their life history or behaviour may exhibit sex-specific differences in their dispersal syndromes. Unfortunately, there is little empirical evidence of sex differences in dispersal syndromes and how they respond to environmental change or dispersal evolution. We investigated these issues using two same-generation studies and a long-term (greater than 70 generations) selection experiment on laboratory populations of Drosophila melanogaster. There was a marked difference between the dispersal syndromes of males and females, the extent of which was modulated by nutrition availability. Moreover, dispersal evolution via spatial sorting reversed the direction of dispersal × sex interaction in one trait (desiccation resistance), while eliminating the sex difference in another trait (body size). Thus, we show that sex differences obtained through same-generation trait-associations ('ecological dispersal syndromes') are probably environment-dependent. Moreover, even under constant environments, they are not good predictors of the sex differences in 'evolutionary dispersal syndrome' (i.e. trait-associations shaped during dispersal evolution). Our findings have implications for local adaptation in the context of sex-biased dispersal and habitat-matching, as well as for the use of dispersal syndromes as a proxy of dispersal.
Data from: Simultaneous evolution of multiple dispersal components and kernel
Global climate is changing rapidly and is accompanied by large-scale fragmentation and destruction of habitats. Since dispersal is the first line of defense for mobile organisms to cope with such adversities in their environment, it is important to understand the causes and consequences of evolution of dispersal. Although dispersal is a complex phenomenon involving multiple dispersal-components like propensity (tendency to leave the natal patch) and ability (to travel long distances), the relationship between these traits is not always straight-forward, it is not clear whether these traits can evolve simultaneously or not, and how their interactions affect the overall dispersal profile. To investigate these issues, we subjected four large (n ∼ 2400) outbred populations of Drosophila melanogaster to artificial selection for increased dispersal, in a setup that mimicked increasing habitat fragmentation over 33 generations. The propensity and ability of the selected populations were significantly greater than the non-selected controls and the difference persisted even in the absence of proximate drivers for dispersal. The dispersal kernel evolved to have significantly greater standard deviation and reduced values of skew and kurtosis, which ultimately translated into the evolution of a greater frequency of long-distance dispersers (LDDs). We also found that although sex-biased dispersal exists in D. melanogaster, its expression can vary depending on which dispersal component is being measured and the environmental condition under which dispersal takes place. Interestingly though, there was no difference between the two sexes in terms of dispersal evolution. We discuss possible reasons for why some of our results do not agree with previous laboratory and field studies. The rapid evolution of multiple components of dispersal and the kernel, expressed even in the absence of stress, indicates that dispersal evolution cannot be ignored while investigating eco-evolutionary phenomena like speed of range expansion, disease spread, evolution of invasive species and destabilization of metapopulation dynamics.
Figure 1 from: Kalaycı G (2022) Pliocene-Pleistocene dispersal bring along low inter species diversity between Vimba species based on multilocus analysis. Zoosystematics and Evolution 98(1): 65-75. https://doi.org/10.3897/zse.98.76937
Figure 1 Map showing the analyzed population stations.
Data from: Sex differences in dispersal syndrome are modulated by environment and evolution
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Data from: Simultaneous evolution of multiple dispersal components and kernel
Open the record for dataset details and reuse information.
Figure 4 in The evolution of an ancient tapeworm lineage in its catfish hosts: vicariance, dispersal and diversification in Gangesiinae (Cestoda: Proteocephalidae)
Figure 4. Line drawings of Gangesia mukutmanipurensis sp. nov. from Ompok bimaculatus (specimen accession number in parentheses). A, gravid proglottid, ventral view (ZSI/W11083/1/2). B, gravid proglottid, dorsal view (ZSI/W11083/1/2). C, D, cross-sections at level of testicular field and ovary, respectively (ZSI/W11088/1 and ZSI/W11089/1). Abbreviations: doc, dorsal osmoregulatory canal; ilm, internal longitudinal muscles; lud, lateral uterine diverticula; Mg, Mehlis' gland; ov, ovary; sl, subtegumental layer; te, testes; ut, uterus; vf, vitelline follicles; voc, ventral osmoregulatory canal.
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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.