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Figure 3 in Application of multifactorial discriminant analysis in the morphostructural differentiation of wild and cultured populations of Vieja Azul (Andinoacara rivulatus)
Figure 3. Cluster from Mahalanobis distances for cultured and wild populations of both sexes. HP: Cultured females; HS: wild females; MP: cultures males; MS: wild males.
Figure 2 in Application of multifactorial discriminant analysis in the morphostructural differentiation of wild and cultured populations of Vieja Azul (Andinoacara rivulatus)
Figure 2. Plot of the individual observation discriminant scores obtained with the canonical discriminant function. HP: Cultured females; HS: wild females; MP: cultures males; MS: wild males.
Figure 1 in Application of multifactorial discriminant analysis in the morphostructural differentiation of wild and cultured populations of Vieja Azul (Andinoacara rivulatus)
Figure 1. (a) Location of 25 anatomic landmark points designed on the left-side view of Andinoacara rivulatus; (b) 32 truss characters making up a truss network. 1- Commissure of the mouth; 2- most cranial point of the upper premaxilla; 3- origin of pelvic fin; 4- origin of dorsal fin; 5- origin of anal fin; 6- most cranial point of the base of the tenth spine of the dorsal fin; 7- ending of anal fin; 8- ending of dorsal fin; 9- ventral origin of caudal fin; 10- dorsal origin of caudal fin; 11- most cranial point of caudal peduncle; 12- most caudal point of caudal peduncle; 13- ending of pectoral fin; 14- end of operculum; 15- cranial edge of the eye; 16- caudal edge of the eye; 17- preoccipital (most posterior aspect of neurocranium); 18- below operculum; 19- origin of pectoral fin; 20- lower end of the head; 21- anal opening; 22- most cranial point of the lower premaxilla; 23- ending of 1st dorsal fin ray; 24- ending of the last anal fin ray; 25- ending of the pelvic fin radius.
Data from: Difference in reproductive mode rather than ploidy explains niche differentiation in sympatric sexual and apomictic populations of Potentilla puberula
Apomicts tend to have larger geographical distributional ranges and to occur in ecologically more extreme environments than their sexual progenitors. However, the expression of apomixis is typically linked to polyploidy. Thus, it is a priori not clear whether intrinsic effects related to the change in the reproductive mode or rather in the ploidy drive ecological differentiation. We used sympatric sexual and apomictic populations of Potentilla puberula to test for ecological differentiation. To distinguish the effects of reproductive mode and ploidy on the ecology of cytotypes, we compared the niches (i) of sexuals (tetraploids) and autopolyploid apomicts (penta-, hepta- and octoploids) and (ii) of the three apomictic cytotypes. We based comparisons on a ploidy screen of 238 populations along a latitudinal transect through the Eastern European Alps and associated bioclimatic, soil and topographic data. Sexual tetraploids preferred primary habitats at drier, steeper, more south-oriented slopes, while apomicts mostly occurred in human-made habitats with higher water availability. Contrariwise, we found no or only marginal ecological differentiation among the apomictic higher ploids. Based on the pronounced ecological differences found between sexuals and apomicts, in addition to the lack of niche differentiation among cytotypes of the same reproductive mode, we conclude that reproductive mode rather than ploidy is the main driver of the observed differences. Moreover, we compared our system with others from the literature, to stress the importance of identifying alternative confounding effects (such as hybrid origin). Finally, we underline the relevance of studying ecological parthenogenesis in sympatry, to minimise the effects of differential migration abilities
Figure 3. A in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 3. A male specimen having morphological characteristics of Deiratonotus tondensis, collected in the Tonda River, Wakayama (OMNH-Ar 6885). Scale bar: 5 mm.
Figure 6 in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 6. Male and female specimens of Deiratonotus japonicus. (A–C) Male from the Isuzu River, Shizuoka (OMNH-Ar 6879); (D) male from the Tonda River, Wakayama (OMNH-Ar 6885); (E) female from the Isuzu River, Shizuoka (OMNH-Ar 6879). (A, D) Cheliped; (B, E) abdomen; (C) first pleopod. Scale bar: 1 mm.
Figure 5 in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 5. Relationship between geographic distance and FST/(12FST) in Deiratonotus populations. Solid circles represent locality combinations showing significant FST values (P,0.05) and open circles represent locality combinations showing insignificant FST values.
Figure 1 in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 1. Sampling localities of Deiratonotus specimens. 1, Isuzu R., Shizuoka; 2, Yukashi Lagoon, Wakayama; 3, Ohta R., Wakayama; 4, Tsuni R., Wakayama; 5, Hiki R., Wakayama; 6, Hukuro R., Wakayama; 7, Tonda R., Wakayama; 8, Urauchi Bay, Kohchi; 9, Fukiage R., Kohchi; 10, Shimanto R., Kohchi; 11, Takahama R., Kumamoto; 12, Amikake R., Kagoshima; 13, Miyashi R., Kagoshima.
Figure 2. A in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 2. A male specimen having morphological characteristics of Deiratonotus japonicus, collected in the Isuzu River, Shizuoka (OMNH-Ar 6879). Scale bar: 5 mm.
Figure 4 in Taxonomic re-examination of the two camptandriid crab species Deiratonotus japonicus (Sakai, 1934) and D. tondensis Sakai, 1983, and genetic differentiation among their local populations
Figure 4. Parsimony network of mtDNA COI haplotypes from Deiratonotus specimens. Haplotypes correspond to Table III. Solid lines show branches coincided with those of ML tree. Bootstrap probabilities (.50%) of 1000 replications in ML analysis are shown on internodes. Oval size indicates the number of each haplotype. Large oval, n514; second, n58; third, n54; fourth, n52; small oval, n51. A haplotype of Deiratonotus cristatus from two localities was used as an outgroup.
Genetic differentiation following recent domestication events: A study of farmed Nile tilapia (Oreochromis niloticus) populations
<p>SNP array data from our research article. It contains the SNP markers in common across the different Nile tilapia (Oreochromis niloticus) populations assessed in the study</p>
Differentiation of rhizosphere fungal assemblages by host ploidy level in mixed-ploidy Larrea tridentata populations
<p class="MsoNormal">Polyploidy—whole genome duplication—is common in plants. Studies over the last several decades have documented numerous mixed-ploidy populations. Whether arising via recurrent whole genome duplication events within a population, or from secondary contact, the persistence of mixed populations is possible by niche differentiation. Specifically, one mechanism facilitating ploidy co-occurrence is microbially-mediated niche differentiation (MMND), wherein cytotypes occupy different niches via interactions with different sets of microbes. Inherently cryptic, MMND is underexplored in polyploid plant populations. Here, we search for evidence of MMND in creosotebush (<em>Larrea tridentata</em>), a dominant desert shrub of the southwestern U.S. and northern Mexico. We sequenced root-associated fungal taxa in soil diploid, autotetraploid, and autohexaploid plants growing in two naturally-occurring mixed-cytotype populations. Within populations, we found substantial fungal assemblage overlap across host plant cytotypes. However, using indicator species analysis, we identified some fungi that are differentiated by host plant cytotype, satisfying a precondition for MMND. Future study is needed to determine the degree of niche differentiation conferred, if any, and whether the identified fungi play a role in the long-term persistence of multiple cytotypes within populations.</p>
Data from: Population genomics reveals multiple drivers of population differentiation in a sex-role-reversed pipefish
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Data from: Difference in reproductive mode rather than ploidy explains niche differentiation in sympatric sexual and apomictic populations of Potentilla puberula
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Differentiation of rhizosphere fungal assemblages by host ploidy level in mixed-ploidy Larrea tridentata populations
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Observed declines in body size have differential effects on survival and recruitment, but no effect on population growth in tropical birds
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Data from: Drift happens: molecular genetic diversity and differentiation among populations of jewelweed (Impatiens capensis Meerb.) reflect fragmentation of floodplain forests
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Differential changes in lifecycle-event phenology provide a window into regional population declines
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Data from: Local adaptation in shell shape traits of a brooding chiton with strong population genomic differentiation
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Data from: Candidate gene SNP variation in floodplain populations of pedunculate oak (Quercus robur L.) near the species' southern range margin: weak differentiation yet distinct associations with water availability
<p>Populations residing near species' low-latitude range margins (LLM) often occur in warmer and drier environments than those in the core range. Thus, their genetic composition could be shaped by climatic drivers that differ from those occurring at higher latitudes, resulting in potentially adaptive variants of conservation value. Such variants could facilitate the adaptation of populations from other portions of the geographic range to similar future conditions anticipated under ongoing climate change. However, very few studies have assessed standing genetic variation at potentially adaptive loci in natural LLM populations. We investigated standing genetic variation at SNPs located within 117 candidate genes and its links to putative climatic selection pressures across 19 pedunculate oak (Quercus robur L.) populations distributed along a regional climatic gradient near the species' southern range margin in southeastern Europe. These populations are restricted to floodplain forests along large lowland rivers, whose hydric regime is undergoing significant shifts under modern rapid climate change. The populations showed very weak geographic structure, suggesting extensive genetic connectivity and gene flow or shared ancestry. We identified eight (6.2%) positive FST-outlier loci, and genotype-environment association analyses revealed consistent associations between SNP allele frequencies and several climatic variables linked to water availability. A total of 61 associations involving 37 SNPs (28.5%) from 35 annotated genes provided important insights into putative functional mechanisms in our system. Our findings provide empirical support for the role of LLM populations as sources of potentially adaptive variation that could enhance species' resilience to climate change-related pressures.</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.