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73 results for “age at maturity”
Figure 4. Alpheus brasileiro Anker, 2012. A in Growth, age at sexual maturity, longevity and natural mortality of Alpheus brasileiro (Caridea: Alpheidae) from the south-eastern coast of Brazil
Figure 4. Alpheus brasileiro Anker, 2012. A, Cohorts identified during sampling describing the growth of each sex. B, Bertalanffy´s equation parameters estimated for males and females. The central line = mean; external lines = prediction intervals (95%).
Figure 5. Alpheus brasileiro Anker, 2012. Logistic curve interpolation where 50 in Growth, age at sexual maturity, longevity and natural mortality of Alpheus brasileiro (Caridea: Alpheidae) from the south-eastern coast of Brazil
Figure 5. Alpheus brasileiro Anker, 2012. Logistic curve interpolation where 50% of females reach functional sexual maturity (CL50).
Figure 3. Alpheus brasileiro Anker, 2012 in Growth, age at sexual maturity, longevity and natural mortality of Alpheus brasileiro (Caridea: Alpheidae) from the south-eastern coast of Brazil
Figure 3. Alpheus brasileiro Anker, 2012. Size–frequency distribution of individuals both sexually immature (2.5 to 4.5 mm CL) and sexually mature (5.5 to 9.5 mm CL). Undifferentiated individuals (white bars), males (black bars) and females (dark grey bars). The values of morphological sexual maturity (4.9 and 4.7 mm CL for males and females respectively) are from the study of population structure and relative growth with the same population (Pescinelli et al., 2018a).
Figure 2. A in Growth, age at sexual maturity, longevity and natural mortality of Alpheus brasileiro (Caridea: Alpheidae) from the south-eastern coast of Brazil
Figure 2. A, Lateral view of an ovigerous female of Alpheus brasileiro Anker, 2012; B, sampling area at the intertidal zone of the estuary of Cananéia, São Paulo, south–eastern Brazil.
Figure 1 in Growth, age at sexual maturity, longevity and natural mortality of Alpheus brasileiro (Caridea: Alpheidae) from the south-eastern coast of Brazil
Figure 1. Location of the study area, water represented by dark grey in the map of the intertidal estuarine zone of Cananéia, São Paulo, south–eastern Brazil. Adapted from Pescinelli et al. (2017a).
Data for: Predicting age and mass at maturity from feeding behavior and diet in M. sexta: An empirical test of a life history model
<p>Feeding for most animals involves bouts of active ingestion alternating with bouts of no ingestion. In insects, the temporal patterning of bouts varies widely with resource quality and is known to affect growth, development time, and fitness. However, the precise impacts of resource quality and feeding behavior on insect life history traits is poorly understood. To explore and better understand the connections between feeding behavior, resource quality and insect life history traits, we combined laboratory experiments with a recently proposed mechanistic model of insect growth and development for a larval herbivore, <em>Manduca sexta</em>. We ran feeding trials for 4<sup>th</sup> and 5<sup>th</sup> instar larvae across different diet types (two hostplants and artificial diet) and used these data to parameterize a joint model of age and mass at maturity that incorporates both insect feeding behavior and hormonal activity. We found that the estimated durations of both feeding and non-feeding bouts were significantly shorter on low- than on high-quality diets. We then explored how well the fitted model predicted historical out-of-sample data on age and mass of <em>M</em>.<em> sexta</em>. We found that the model accurately described qualitative outcomes for the out-of-sample data, notably that a low-quality diet results in reduced mass and later age at maturity compared to high-quality diets. Our results clearly demonstrate the importance of diet quality on multiple components of insect feeding behavior (feeding and non-feeding), and partially validate a joint model of insect life history. We discuss the implications of these findings with respect to insect herbivory and discuss ways in which our model could be improved or extended to other systems.</p>
Data for: Predicting age and mass at maturity from feeding behavior and diet in M. sexta: An empirical test of a life history model
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Coarse Woody Debris (CWD) biomass across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes coarse woody debris data for intermediate-aged and mature boreal forest stands across interior Alaska.
Fine Woody Debris (FWD) biomass across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes fine woody debris data for intermediate-aged and mature boreal forest stands across interior Alaska.
Foliage chemistry across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes foliage %C and %N data for intermediate-aged (20-59 yr old) and mature (60+ yr old) boreal forest stands across interior Alaska. Data have not been published.
Snag size and composition across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes snag biomass data for intermediate-aged and mature boreal forest stands across interior Alaska.
Size and composition of all live and dead trees and large shrubs across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes snag biomass data for intermediate-aged (20-59 yr old) and mature (60+ yr old) boreal forest stands across interior Alaska. Data from intermediate-aged stands was published in Alexander et al. 2012.
Twig chemistry across a compositional gradient of intermediate-aged and mature forest stands within Interior Alaska collected 2008-2011.
This dataset includes twig %C and %N data for intermediate-aged (20-59 yr old) and mature (60+ yr old) boreal forest stands across interior Alaska. Data have not been published.
Heterogeneous genetic basis of age at maturity in salmonid fishes
<p>Understanding the genetic basis of repeated evolution of the same phenotype across taxa is a fundamental aim in evolutionary biology and has applications to conservation and management. However, the extent to which interspecific life-history trait polymorphisms share evolutionary pathways remains under-explored. We address this gap by studying the genetic basis of a key life-history trait, age at maturity, in four species of Pacific salmon (genus <i>Oncorhynchus</i>) that exhibit intra- and interspecific variation in this trait – Chinook Salmon, Coho Salmon, Sockeye Salmon, and Steelhead Trout. We tested for associations in all four species between age at maturity and two genome regions, <i>six6 </i>and <i>vgll3</i>, that are strongly associated with the same trait in Atlantic Salmon (<i>Salmo salar</i>). We also conducted a genome-wide association analysis in Steelhead to assess whether additional regions were associated with this trait. We found the genetic basis of age at maturity to be heterogeneous across salmonid species. Significant associations between <i>six6 </i>and age at maturity were observed in two of the four species, Sockeye and Steelhead, with the association in Steelhead being particularly strong in both sexes (p = 4.46x10<sup>-9</sup> after adjusting for genomic inflation). However, no significant associations were detected between age at maturity and the <i>vgll3 </i>genome region in any of the species, despite its strong association with the same trait in Atlantic Salmon. We discuss possible explanations for the heterogeneous nature of the genetic architecture of this key life-history trait, as well as the implications of our findings for conservation and management.</p>
Heritability and genomic basis of age-at-maturity in Chinook Salmon
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Variable parallelism in the genomic basis of age at maturity across spatial scales in Atlantic Salmon
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Data from: A stochastic model for predicting age and mass at maturity of insects
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Heterogeneous genetic basis of age at maturity in salmonid fishes
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Ectotherm size- and age-at-maturity in a warmer, variable, and resource-poor world
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Data and code from: The evolution of developmental thresholds and reaction norms for age and size at maturity
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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.
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DANDI Archive for NWB datasets
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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.