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12 results for “life-history characteristics”
Data from: Weedy and seedy: The rapid evolution of life-history characteristics in an introduced daisy
<p>Despite the importance of life-history characteristics in determining a species' success, we still lack basic information about some fundamental life-history elements found across the life cycle of introduced plants. Our study assesses rapid evolutionary divergence in life-history characteristics of the beach daisy, <em>Arctotheca populifolia,</em> by comparing introduced Australian and source South African plants and measuring eight key variables including seed mass, germination, reproductive output and survival. This is the first study that compares the life history of an introduced plant species with its single original source population, providing a precise and powerful method for detecting evolutionary divergence. We found that introduced <em>A. populifolia</em> has evolved a suite of weedy life-history characteristics in less than 90 years: the introduced plants use a live-fast die-young strategy of germination and survival and produce significantly more inflorescences and more seeds that germinate faster. This knowledge adds to the remarkable data that we already have on the rapid evolutionary divergence occurring in the morphology, physiology and defence of this introduced plant and highlights the speed and scope of evolutionary divergence possible in plants. To fully understand and manage the future of our plant species, we must consider their potential for ongoing change in key aspects of life history.</p>
Fig. 1 in Life-History Characteristics Of The Ground Beetle Carabus Scheidleri (Coleoptera: Carabidae) In Hungary
Fig. 1. Seasonal activity of C. scheidleri individuals at Nagykovácsi, Central Hungary in 2001 and in 2002. The arrows [narrow arrows in 2002] denote the main activity period (left and right arrows) and activity peak (middle arrow). (Different letters indicate significant (p<0.05) differences within the given years by post-hoc Fisher LSD test.) Repeated measures ANOVA between the years: [F (1; 63)
Figure 2 in Female life-history characteristics of the Mosor rock lizard, Dinarolacerta mosorensis (Kolombatović, 1886) from Montenegro (Squamata: Lacertidae)
Figure 2. The relationships between clutch size and maternal SVL of Dinarolacerta mosorensis from the three different populations.
Figure 1 in Female life-history characteristics of the Mosor rock lizard, Dinarolacerta mosorensis (Kolombatović, 1886) from Montenegro (Squamata: Lacertidae)
Figure 1. The relationship between age and female SVL of Dinarolacerta mosorensis from the Lovćen population.
Data from: Weedy and seedy: The rapid evolution of life-history characteristics in an introduced daisy
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Data from: Life-history characteristics and landscape attributes as drivers of genetic variation, gene flow and fine-scale population structure in Northern Dolly Varden (Salvelinus malma malma) in Canada
The Northern Dolly Varden (Salvelinus malma malma) displays variable life-history types and occupies freshwater habitats with varying levels of connectivity. Here, we assayed microsatellite DNA variation in Northern Dolly Varden from the western Canadian Arctic to resolve landscape and life history variables driving variation in genetic diversity and population structure. Overall, genetic variation was highest in anadromous populations and lowest in those isolated above waterfalls with stream-resident forms intermediate between the two. Anadromous and isolated populations were genetically divergent from each other while no genetic differentiation was detectable between sympatric anadromous and stream-resident forms. Population structure was stable over 25 years, hierarchically organized and conformed to an isolation-by-distance pattern, but stream-isolated forms often deviated from these patterns. Gene flow occurred primarily among Yukon North Slope populations and between sympatric anadromous and resident forms. These results were sex-dependent to some extent, but were influenced more by reproductive status and life history. Our study provides novel insights into the life history, population demographic and habitat variables that shape the distribution of genetic variation and population structure in Arctic fluvial habitats while providing a spatial context for management and conservation.
Data from: Life-history characteristics and landscape attributes as drivers of genetic variation, gene flow and fine-scale population structure in Northern Dolly Varden (Salvelinus malma malma) in Canada
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Data from: Life-history characteristics of European birds
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Fig. 2 in Life-history characteristics of Pseudoplatystoma metaense (Teleostei: Siluriformes: Pimelodidae) from the northwestern Orinoco River Basin
Fig. 2. Results of Periodic Regression Model fit to MIA values (dots) for asteriscus otoliths of Pseudoplatystoma metaense (solid line) compared with Apure River flood cycle (dashed line), for the periods June 2000-May 2001 and June 2002-April 2003. Arrows indicate approximate times of opaque zone (annulus) formation in the otoliths.
Fig. 1 in Life-history characteristics of Pseudoplatystoma metaense (Teleostei: Siluriformes: Pimelodidae) from the northwestern Orinoco River Basin
Fig. 1. Location of the sampling points in the study area of the northwestern Orinoco River Basin of the fishery for Pseudoplatystoma metaense.
Fig. 4 in Life-history characteristics of Pseudoplatystoma metaense (Teleostei: Siluriformes: Pimelodidae) from the northwestern Orinoco River Basin
Fig. 4. Age-frequency distributions of Pseudoplatystoma metaense in the northwestern Orinoco River Basin fishery from different years: a)1996; b)1997; c) 1998; d) 1999; e) 2000; f) 2001; g) 2002 and h) 2003.
Fig. 3 in Life-history characteristics of Pseudoplatystoma metaense (Teleostei: Siluriformes: Pimelodidae) from the northwestern Orinoco River Basin
Fig. 3. Estimated von Bertalanffy growth curves for males (circles) and females (triangles) fitted to length-atage data from otoliths for Pseudoplatystoma metaense in northwestern Orinoco River Basin during 1996-2003 (model parameters presented in Tab.1).
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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.