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19,493 results for “Populism”
Figure 2 in Population structure and breeding biology of the hairy crab Pilumnus vespertilio (Fabricius, 1793) (Crustacea: Brachyura: Pilumnidae) in southern Mozambique
Figure 2. Pilumnus vespertilio (Fabricius, 1793). Monthly size–frequency distributions. White bars, males; grey bars, non-ovigerous females; black bars, ovigerous females.
Figure 1 in Population structure and breeding biology of the hairy crab Pilumnus vespertilio (Fabricius, 1793) (Crustacea: Brachyura: Pilumnidae) in southern Mozambique
Figure 1. Pilumnus vespertilio (Fabricius, 1793). Overall size–frequency distributions of all individuals collected at Inhaca Island.
Figure 4 in Population dynamics, age structure and sex ratio of the bromeliad-dwelling jumping spider, Psecas chapoda (Salticidae)
Figure 4. Phenogram of the Psecas chapoda population on plants of Bromelia balansae without inflorescence, from May 1998 to April 2000 (N53516 spiders).
Figure 3 in Population structure and breeding season of the hermit crab Diogenes brevirostris Stimpson, 1858 (Decapoda, Anomura, Diogenidae) from southern Mozambique
Figure 3. Diogenes brevirostris (Stimpson, 1858). Percentage of ovigerous females collected from January to December 2003 at Costa do Sol, Maputo Bay, southern Mozambique. Error bars represent standard deviation. Bars sharing the same letter do not differ statistically (Scheffé's test, P.0.05).
Figure 1 in Population structure and breeding season of the hermit crab Diogenes brevirostris Stimpson, 1858 (Decapoda, Anomura, Diogenidae) from southern Mozambique
Figure 1. Diogenes brevirostris (Stimpson, 1858). Overall size frequency distribution for the total sample collected from January to December 2003 at Costa do Sol, Maputo Bay, southern Mozambique.
Slower environmental cycles maintain greater life-history variation within populations
<p>Populations in nature are comprised of individual life histories, whose variation underpins ecological and evolutionary processes. Yet the forces of environmental selection that shape intrapopulation life-history variation are still not well understood, and efforts have largely focused on random (stochastic) fluctuations of the environment. However, a ubiquitous mode of environmental fluctuation in nature is cyclical, whose periodicities can change independently of stochasticity. Here we test theoretically-based hypotheses for whether shortened ('Fast') or lengthened ('Slow') environmental cycles should generate higher intrapopulation variation of life history phenotypes. We show, through a combination of individual-based modelling and a multi-generational laboratory selection experiment using the tidepool copepod Tigriopus californicus, that slower environmental cycles maintain higher levels of intrapopulation variation. Surprisingly, the effect of environmental periodicity on variation was much stronger than that of stochasticity. Thus, our results show that periodicity is an important facet of fluctuating environments for life-history variation.</p>
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.
Figure 4 in Population dynamics and reproduction of the hermit crab Calcinus gaimardii (Anomura: Diogenidae) at Inhaca Island, southern Mozambique
Figure 4. Reproductive activity of Calcinus gaimardii (H. Milne Edwards, 1848) at Inhaca Island, southern Mozambique. Bars sharing the same letter do not differ statistically (Scheffé's test, P.0.05).
Figure 3 in Population dynamics and reproduction of the hermit crab Calcinus gaimardii (Anomura: Diogenidae) at Inhaca Island, southern Mozambique
Figure 3. Calcinus gaimardii (H. Milne Edwards, 1848). Relationship between sex ratio and crab size.
Figure 2 in Population dynamics and reproduction of the hermit crab Calcinus gaimardii (Anomura: Diogenidae) at Inhaca Island, southern Mozambique
Figure 2. Calcinus gaimardii (H. Milne Edwards, 1848). Frequency of crabs sampled at Inhaca Island during the study period.
Figure 1 in Population dynamics and reproduction of the hermit crab Calcinus gaimardii (Anomura: Diogenidae) at Inhaca Island, southern Mozambique
Figure 1. Whisker plots (mean¡SD) representing size variation of Calcinus gaimardii (H. Milne Edwards, 1848) of males (A) and females (B).
Figure 8 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 8. Liocarcinus depurator, megalopa. (A, B) Abdomen, lateral and dorsal views, respectively; (C) first pleopod; (D) pleopod 4. Scale bars: 0.3 mm.
Figure 2 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 2. Liocarcinus depurator, megalopa. (A) Antenna; (B) mandibular palp; (C) maxillule. Scale bars: 0.5 mm (A); 0.2 mm (B, C).
Figure 7 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 7. Liocarcinus depurator, megalopa. (A–E) Pereiopods 1–5; (F) dactyl of the first pereiopod; (G) dactyl of pereiopod 5; (H) sternum. Scale bars: 0.5 mm.
Figure 1 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 1. Liocarcinus depurator, megalopa. (A, B) Carapace, lateral and dorsal views, respectively; (C) antennule. Scale bars: 1 mm (A, B); 0.2 mm (C).
ScienceDex guides
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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.