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19,493 results for “Populism”
Figure 2 in The tadpole of an insular population of Cycloramphus boraceiensis Heyer, 1983 (Anura: Cycloramphidae) with a review of larval descriptions for species in the genus
Figure 2. External morphological features of a tadpole of Cycloramphus boraceiensis Stage 36 (Gosner, 1960). (A) Dorsal view, (B) Lateral view, (C) Ventral view, (D) close up of oral disc and jaw sheaths; note the smaller size of keratodonts on P3 row, (E) close up of midbody showing spiracle opening and lateral view of the flap, (F) close up of the posterior portion of the body showing the position of the vent opening (the brownish coloration s fecal matter) and the extension of the flap, (G) close up of left side of the head.
Figure 1 in The tadpole of an insular population of Cycloramphus boraceiensis Heyer, 1983 (Anura: Cycloramphidae) with a review of larval descriptions for species in the genus
Figure 1. The tadpole of Cycloramphus boraceiensis (USNM 217933), from Estação Biológica de Boracéia, São Paulo, Brazil. (A) Illustration of the lateral view as originally appeared in Heyer's (1983a) original description, (B) and (C) ventral view and (D) dorsal view of the photographed specimen used in the original description and Illustration presented in A. We highlighted the P3 row, which is made up by smaller keratodonts than the other rows, the spiracle, meniscus, and the bulge on the gill region, that together with the degree of development of the feet are indicative of a tadpole Stage 41 (Gosner, 1960).
Figure 6 in Population structure of Tachypleus tridentatus (Chelicerata: Merostomata) at a nursery beach in Puerto Princesa City, Palawan, Philippines
Figure 6. Age structure of juvenile population.
Figure 4 in Population structure of Tachypleus tridentatus (Chelicerata: Merostomata) at a nursery beach in Puerto Princesa City, Palawan, Philippines
Figure 4. Size–frequency distribution of the medium-sized individuals using a 0.1-cm interval size.
Figure 2 in Population structure of Tachypleus tridentatus (Chelicerata: Merostomata) at a nursery beach in Puerto Princesa City, Palawan, Philippines
Figure 2. Size–frequency distribution of all individuals and exuviae using a 0.2-cm interval size.
Figure 5 in Population structure of Tachypleus tridentatus (Chelicerata: Merostomata) at a nursery beach in Puerto Princesa City, Palawan, Philippines
Figure 5. Size–frequency distribution of the largest individuals using a 0.3-cm interval size.
Figure 4 in Comparative population biology of Uca rapax (Smith, 1870) (Brachyura, Ocypodidae) from two subtropical mangrove habitats on the Brazilian coast
Figure 4. Uca rapax. Monthly size–frequency distributions for the Ubatumirim population.
Figure 3 in Comparative population biology of Uca rapax (Smith, 1870) (Brachyura, Ocypodidae) from two subtropical mangrove habitats on the Brazilian coast
Figure 3. Uca rapax. Monthly size–frequency distributions for the Itamambuca population.
Figure 3 in Population dynamics, age structure and sex ratio of the bromeliad-dwelling jumping spider, Psecas chapoda (Salticidae)
Figure 3. Climatic data from Itauna farm (5 km from the study site), from May 1998 to April 2000.
Fitness consequences of biochemical adaptation in Drosophila melanogaster populations under simultaneous selection for faster pre-adult development and extended life-span
<p>In holometabolous insect like <i>Drosophila melanogaster</i>, critical size is an important time point during larval life, for irreversible commitment to metamorphosis. Here, we studied the impact of restricted growth duration in terms of selection for faster pre-adult development in <i>Drosophila melanogaster</i> populations which resulted in the evolution of reduced critical size on adult life history traits. Selection for faster pre-adult development resulted in biochemical adaptation in larval physiology with no compromise in major biomolecules at critical size time point. The flies from the selected populations seem to not only commit to metamorphosis on the attainment of critical size but also seem to channelize resources to reproduction as indicated by similar life-time fecundity of CS and NS flies from selected populations, while the Control CS flies significantly lower life-time fecundity compared to Control NS flies. The flies from selected populations seem to achieve longevity comparable to control flies despite being significantly smaller in size- thus resource constrained due to faster pre-adult development.</p>
Within-year and among-year variation in impacts of targeted conservation management on juvenile survival in a threatened population
<p>1. Overall impacts of targeted conservation interventions on population growth rate (λ) will depend on within-year and among-year variation in exposure of target individuals to interventions, and in intervention efficacy in increasing vital rates of exposed individuals. Juvenile survival is one key vital rate that commonly varies substantially within and among years, and consequently drives variation in λ. However, within-year, among-year and overall impacts of targeted interventions on population-wide survival probabilities of potentially mobile juveniles are rarely quantified, precluding full evaluation and evidence-based refinement of interventions.</p> <p>2. We applied multi-state mark-recapture models to eight years of ring-resighting data from a threatened red-billed chough (<i>Pyrrhocorax pyrrhocorax</i>) population to quantify within-year and among-year variation in juvenile exposure to a targeted intervention of supplementary feeding and parasite treatment, and to estimate efficacy in increasing juvenile survival probability. We then combined and up-scaled these estimated effects to evaluate the impact of the eight-year intervention on overall population-wide survival probability and resulting population size.</p> <p>3. High proportions of surviving juveniles (>70%) were exposed to the intervention across the annual biological cycle in all years. Exposure was associated with higher short-term survival probabilities through the full annual cycle. Consequently, management increased estimated population-wide annual juvenile survival by approximately 0.14. However, such effects were only evident in cohorts with low overall annual survival.</p> <p>4. Population models projected that these impacts on annual juvenile survival substantially reduced population decline, such that population size at the end of the eight-year intervention was approximately double that without management.</p> <p>5. Synthesis and applications. Our results show how complex patterns of within-year and among-year variation in exposure and efficacy of targeted conservation interventions can arise and scale up to affect population-level outcomes. We demonstrate positive effects of a major intervention, but also highlight potential routes to improve efficacy, for example through more precise targeting of agricultural management actions in the context of among-year variation in environmental conditions.</p>
Genetic variation for upper thermal tolerance diminishes within and between populations with increasing acclimation temperature in Atlantic salmon
<p>Populations may counteract lasting temperature changes or recurrent extremes through plasticity or adaptation. However, it remains underexplored how outbreeding, either naturally, unintentionally, or facilitated, may modify a local response potential and whether genotype-by-environment interactions or between-trait correlations can restrict this potential. We quantified population differences and outbreeding effects, within-population genetic variation, and plasticity of these, for thermal performance proxy traits using 32 pedigreed wild, domesticated, and wild-domesticated Atlantic salmon families reared under common-garden conditions. Following exposure to ambient cold (11.6°C) or ~4- and ~8-degree warmer summer temperatures, populations differed notably for body length and critical thermal maximum (CT<sub>max</sub>) and for thermal plasticity of length, condition, and CT<sub>max</sub>, but not for haematocrit. Line-cross analysis suggested mostly additive and some dominant outbreeding effects on means and solely additive outbreeding effects on plasticity. Heritability was detected for all traits. However, with increasing acclimation temperature, differences in CT<sub>max</sub> between populations and CT<sub>max</sub> heritability diminished, and CT<sub>max</sub> breeding values re-ranked. Furthermore, CT<sub>max</sub> and body size were negatively correlated at the genetic and phenotypic levels, and there was indirect evidence for a positive correlation between growth potential and thermal performance breadth for growth. Thus, population differences (including those between wild and domesticated populations) in thermal performance and plasticity may present a genetic resource in addition to the within-population genetic variance to facilitate, or impede, thermal adaptation. However, unfavourable genotype-by-environment interactions and negative between-trait correlations may generally hamper joint evolution in response to increase in average temperature and temporary extremes.</p>
Figure 3 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 3. Liocarcinus depurator, megalopa. Maxilla. Scale bar: 0.2 mm.
Figure 4 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 4. Liocarcinus depurator, megalopa. First maxilliped. Scale bar: 0.2 mm.
Figure 6 in Morphological variability of the megalopa of Liocarcinus depurator (Brachyura: Portunidae) in Mediterranean and Atlantic populations
Figure 6. Liocarcinus depurator, megalopa. Third maxilliped. Scale bar: 0.2 mm.
Figure 11 in Relative growth and population dynamics of Macrobrachium iheringi (Decapoda, Palaemonidae)
Figure 11. Macrobrachium iheringi (Ortmann, 1897). Time series analysis of undifferentiated individuals and (A) rainfall (mm) from July 1991 to June 1992 and (B) temperature (°C) from July 1993 to June 1994 in Botucatu, Brazil. Lag = time; Corr = correlation value; S.E. = standard error; Conf. Limit = confidence limit.
Figure 10 in Relative growth and population dynamics of Macrobrachium iheringi (Decapoda, Palaemonidae)
Figure 10. Macrobrachium iheringi (Ortmann, 1897). Time series analysis of ovigerous females and (A) rainfall (mm) and (B) temperature (°C) from July 1993 to June 1994 in Botucatu, Brazil. Lag = time; Corr = correlation value; S.E. = standard error; Conf. Limit = confidence limit.
Figure 9 in Relative growth and population dynamics of Macrobrachium iheringi (Decapoda, Palaemonidae)
Figure 9. Macrobrachium iheringi (Ortmann, 1897). Relationship between fecundity and total length of females.
Figure 8 in Relative growth and population dynamics of Macrobrachium iheringi (Decapoda, Palaemonidae)
Figure 8. Monthly distribution of individuals of Macrobrachium iheringi (Ortmann, 1897) by size classes, captured from July 1993 to June 1994.
Figure 6 in Relative growth and population dynamics of Macrobrachium iheringi (Decapoda, Palaemonidae)
Figure 6. Projection scores of first and second principal components, generated with the principal components analysis of Macrobrachium iheringi (Ortmann, 1897) males' morphometric data.
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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.