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518 results for “life history traits”
Figure 7 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management
Figure 7. Size at which 50 % of the shrimps are mature (L 50) estimated for Plesionika edwardsii in the Azorean region fitting a logistic curve to the proportion of ovigerous females. Logistic curve was estimated combining all data obtained during the period 1999–2000.
Figure 4 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management
Figure 4. Seasonal predicted mean cephalothorax length (CL) by depth stratum for males, non-ovigerous and ovigerous females of Plesionika edwardsii in the Azorean region for the period 1999–2000. Light-colored symbols represent raw data. Detailed parameter estimates are in Tab. S4.
Figure 1 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management
Figure 1. Sampling areas of Plesionika edwardsii in the mid-North Atlantic Ocean, Azorean region (ICES Subdivision 10a2) between 1999 and 2000. Orange dots represent each site sampled by a trap.
Figure 6 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management
Figure 6. Sex ratio of Plesionika edwardsii by size class in the Azorean region during the period 1999–2000.
Figure 3 in Unraveling distributional patterns and life-history traits of a deep-water shrimp Plesionika edwardsii (Decapoda, Pandalidae) under unexploited virgin conditions: a benchmark for fisheries management
Figure 3. Size frequency distribution of males, non-ovigerous and ovigerous females Plesionika edwardsii in the Azorean region during the period 1999-2000.
Landscape composition and life-history traits influence bat movement and space use: analysis of 30 years of published telemetry data
<p>Using temperate bats, a group of particular conservation concern, we investigated how morphological traits, habitat specialization and environmental variables affect home range sizes and daily foraging movements, using a compilation of 30 years of published bat telemetry data in Northern America and Europe for the period 1988 – 2016.</p> <p>We compiled data on home range size and mean daily distance between roosts and foraging areas at both colony and individual levels from 166 studies of 3,129 radiotracked individuals of 49 bat species. We calculated multi-scale habitat composition and configuration in the surrounding landscapes of all studied roosts. Using mixed models, we examined the effects of habitat availability and spatial arrangement on bat movements, while accounting for body mass, aspect ratio, wing loading and habitat specialization.</p> <p>We found a significant effect of landscape composition on home range size and mean daily distance at both colony and individual levels. On average, home ranges were up to 42% smaller in the most habitat-diversified landscapes while mean daily distances were up to 30% shorter in the most forested landscapes. Bat home range size significantly increased with body mass, wing aspect ratio and wing loading, and decreased with habitat specialization.</p>
On the genetic architecture of rapidly adapting and convergent life history traits in guppies
<p>The genetic basis of traits shapes and constrains how adaptation proceeds in nature; rapid adaptation can be facilitated by polygenic traits, which subsequently provide multiple, redundant, genetic routes to adaptive phenotypes, reducing re-use of the same genes (genetic convergence). Guppy life history traits evolve rapidly and convergently among natural high- (HP) and low-predation (LP) environments in northern Trinidad. This system has been studied extensively at the phenotypic level, but little is known about the underlying genetic architecture. Here, we use an F2 QTL design to examine the genetic basis of seven (five female, two male) guppy life history phenotypes to assess whether the genetic architecture of these traits reflects theoretical predictions. We use RAD-sequencing data (16,539 SNPs) from 370 male and 267 female F2 individuals. We perform linkage mapping, estimates of genome-wide and per-chromosome heritability (multi-locus associations), and QTL ma pping (single-locus associations). Our results are consistent with architectures of many-loci of small effect for male age and size at maturity and female interbrood period. Male trait associations are clustered on specific chromosomes, but female interbrood period exhibits a weak genome-wide signal suggesting a potentially highly polygenic component. Offspring weight and female size at maturity are also associated with a single significant QTL each. These results suggest rapid phenotypic evolution of guppies may be facilitated by polygenic trait architectures, but these could fuel redundancy and limit gene re-use across populations, in agreement with an absence of strong signatures of genetic convergence from recent population genomic analyses of wild HP-LP guppies.</p>
Effects of genetic vs. environmental quality on condition-dependent morphological and life history traits in a neriid fly
<p>Condition is assumed to reflect both genes and environment, enabling condition-dependent signals to reveal genetic quality. However, because the phenotypic effects of variation in genetic quality could be masked by environmental heterogeneity, the contribution of genetic quality to phenotypic variation in fitness-related traits and condition-dependent signals remains unclear. We compared effects of ecologically relevant manipulations of environmental quality (nutrient dilution in the larval diet) and genetic quality (one generation of inbreeding) on male and female morphology, life history and reproductive performance in the neriid fly <em>Telostylinus angusticollis</em>. We found that larval diet quality had strong, positive effects on male and female body size, male secondary sexual traits, and aspects of male and female reproductive performance. By contrast, inbreeding had weak effects on most traits, and no trait showed clear and consistent effects of both environmental and genetic quality. Indeed, inbreeding effects on body size and male competitive performance were of opposite sign in rich vs. poor larval diet treatment groups. Our results suggest that environmental quality strongly affects condition, but the effects of genetic quality are subtle and environment-dependent in this species. These findings raise questions about the genetic architecture of condition and the potential for condition-dependent traits to function as signals of genetic quality.</p>
Figure 1 in Accounting for variability in life-history traits for the definition of amphidromous goby fry fisheries closure periods
Figure 1. – Ranking of the 4096 alternatives of fisheries closure periods based on the MULTIMOORA analysis on the abundance and life-history traits of Sicyopterus lagocephalus and Cotylopus acutipinnis. The best alternative is ranked 1 and the worst 4096. Fisheries closure periods are colour coded.
Figure 2 in Life history traits and exploitation of Hampala barb (Hampala macrolepidota - Cyprinidae) in a subtropical reservoir (Lao PDR)
Figure 2. – Transverse section of an otolith (asteriscus) from a 2+-year- old Hampala macrolepidota from the Nam Theun 2 Reservoir. The section was acid etched, stained with toluidine blue and viewed using reflected light: 2 strained translucent zones (white trian- gle) were counted along the sulcus axis. Core (C), translucent stainable zone (TZ), opaque zone (OZ), ventral face (V), dorsal face (D), external face (E) and internal face (I).
Figure 5 in Life history traits and exploitation of Hampala barb (Hampala macrolepidota - Cyprinidae) in a subtropical reservoir (Lao PDR)
Figure 5. – Von Bertalanffy growth function adjusted to the age (month)-standard length of Hampala macrolepidota from the Nam Theun 2 Reservoir in Lao PDR between November 2015 and January 2017; at left, all polled and at right, by sex, grey dotted lines show the 95% confident interval.
Figure 1 in Life history traits and exploitation of Hampala barb (Hampala macrolepidota - Cyprinidae) in a subtropical reservoir (Lao PDR)
Figure 1. – Map of the Nam Theun 2 Reservoir in Lao PDR at its highest level (surface = 489 km²) and localization of sampling sites by experimental fishing gillnets (black dotes) and of villages (black stars) by landing/fishing effort monitoring. Source: Google Earth.
Figure 6 in Life history traits and exploitation of Hampala barb (Hampala macrolepidota - Cyprinidae) in a subtropical reservoir (Lao PDR)
Figure 6. – Percentage of mature Hampala macrolepidota females in 20 mm standard length intervals from the Nam Theun 2 Reservoir in Lao PDR in 2016 fitted to a logistic function.
Figure 6 in Life history traits of the exploited Nile Tilapia (Oreochromis niloticus - Cichlidae) in a subtropical reservoir (Lao PDR)
Figure 6. – At left, percentage of mature Oreochromis niloticus females by 20 mm standard length intervals, a fitted to logistic function from the Nam Theun 2 Reservoir in Lao PDR in 2016; at right, percentage of mature Oreochromis niloticus females by age (year), fitted to a logistic function from the Nam Theun 2 Reservoir in Lao PDR in 2016.
Figs. 3 A-C. A in PLAnt density influence on Life history trAits of A perenniAL herb in rocky outcrops, southeAstern BrAZiL
Figs. 3 A-C. A. Rosettes height in centimeters in contrasting density conditions; B. Rosettes diameter in contrasting density conditions; C. Leaf number per rosette in contrasting density conditions. The bars represent the mean and the line is the standard deviation.
Figs. 4 A-B. A in PLAnt density influence on Life history trAits of A perenniAL herb in rocky outcrops, southeAstern BrAZiL
Figs. 4 A-B. A. Flower scape number per rosette in contrasting density conditions; B. Flower scape length in contrasting density conditions.
Fig. 1 in PLAnt density influence on Life history trAits of A perenniAL herb in rocky outcrops, southeAstern BrAZiL
Fig. 1. Map of the studied area, showing the location of Estação de Pesquisa e Desenvolvimento Ambiental de Peti on Minas Gerais State, Brazil.
Figs. 2. A-B. A. A in PLAnt density influence on Life history trAits of A perenniAL herb in rocky outcrops, southeAstern BrAZiL
Figs. 2. A-B. A. A flowering specimen of Vellozia albiflora Pohl on gneiss outcrops of Morro do Cruzeiro, MG, Brazil. B. Sampling area showing a dense mat of plants, determined as the "high density" condition in this study. Bar = 3 cm.
Fig. 2. Canonical discriminant functional analyses showing 3 in Life history traits of three cryptic species Asia I, Asia II-1 and Asia II-7 of Bemisia tabaci (Hemiptera: Aleyrodidae) reconfirm their genetic identities
Fig. 2. Canonical discriminant functional analyses showing 3 genetic groups of Bemisia tabaci species complex.
Fig. 1 in Life history traits of three cryptic species Asia I, Asia II-1 and Asia II-7 of Bemisia tabaci (Hemiptera: Aleyrodidae) reconfirm their genetic identities
Fig. 1. Component analysis (PCA) showing the clustering of genetic groups of Bemisia tabaci species complex.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.