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276 results for “population biology”
Data from: Cryptic species, native populations and biological invasions by a eucalypt forest pathogen
Human associated introduction of pathogens and consequent invasions are very evident in areas where no related organisms existed before. In areas where related but distinct populations or closely related cryptic species already exist, the invasion process is much harder to unravel. In this study, the population structure of the Eucalyptus leaf pathogen Teratosphaeria nubilosa was studied within its native range in Australia, including both commercial plantations and native forests. A collection of 521 isolates from across its distribution was characterized using eight microsatellite loci, resulting in 112 multilocus haplotypes (MLH). Multivariate and Bayesian analyses of the population conducted in STRUCTURE revealed three genetically isolated groups (A, B and C), with no evidence for recombination or hybridization among groups, even when they co-occur in the same plantation. DNA sequence data of the ITS (n=32), β-tubulin (n=32) and 27 anonymous loci (n=16) were consistent with microsatellite data in suggesting that T. nubilosa should be considered as a species complex. Patterns of genetic diversity provided evidence of biological invasions by the pathogen within Australia in the states of Western Australia and New South Wales, and helped unravel the pattern of invasion beyond Australia into New Zealand, Brazil and Uruguay. No significant genetic differences in pathogen populations collected in native forests and commercial plantations were observed. This emphasizes the importance of sanitation in the acquisition of nursery stock for the establishment of commercial plantations.
Fig. 1 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 1. Marking scheme for individual identification of Ohlone tiger beetle adults used during the capturerecapture and frequency of capture studies. Some variation in the maculations exists. Numbers on the elytra represent the positions for marking each beetle with a unique identification number. Marks applied to single or multiple locations uniquely identify each marked beetle. For example, beetle #1 would have a mark at the #1 position, beetle #12 would have marks at the #2 and #10 locations, and beetle #147 would have marks at the #7, #40, and #100 locations.
Fig. 4 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 4. Population curves for adult Ohlone tiger beetle generations at Glenwood, Santa Cruz Co., CA. a) Triangular model in 2016, b) Multi-peak model in 2017.
Fig. 3 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 3. Frequency of observed dispersal distances (m) by Ohlone tiger beetle males (bars with vertical lines) and females (bars with horizontal lines).
Fig. 2 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 2. Recapture decay plot of observed Ohlone tiger beetle adult lifespans (i.e., residence) and fitted trend line
Fig. 6 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 6. Inverse correlation between annual (July 1 – June 30) rainfall amounts (cm) and estimated Ohlone tiger beetle (OTB) adult generation population sizes for Moore Creek, Santa Cruz Co., CA.
Fig. 5. Annual Ohlone tiger beetle adult generation population estimates from 2000 through 2017 in Biology and Conservation of Cicindela ohlone Freitag and Kavanaugh (Coleoptera: Carabidae: Cicindelinae), the Endangered Ohlone Tiger Beetle. II. Population Ecology of Adults and Larvae and Recommended Monitoring Methods
Fig. 5. Annual Ohlone tiger beetle adult generation population estimates from 2000 through 2017 at four study sites near Santa Cruz, CA. Horizontal line represents the average generation size of all annual estimates for each site.
Supplementary material 3 from: Miranda-Gamboa R, Espinasa L, Verde-Ramírez MA, Hernández-Lozano J, Lacaille JL, Espinasa M, Ornelas-García CP (2023) A new cave population of Astyanax mexicanus from Northern Sierra de El Abra, Tamaulipas, Mexico. Subterranean Biology 45: 95-117. https://doi.org/10.3897/subtbiol.45.98434
Contrasting vertical isolation between Pachón and El Refugio caves and the fossil canyon between Pachón and El Refugio caves
Supplementary material 2 from: Miranda-Gamboa R, Espinasa L, Verde-Ramírez MA, Hernández-Lozano J, Lacaille JL, Espinasa M, Ornelas-García CP (2023) A new cave population of Astyanax mexicanus from Northern Sierra de El Abra, Tamaulipas, Mexico. Subterranean Biology 45: 95-117. https://doi.org/10.3897/subtbiol.45.98434
Geometric morphometric coordinates, PCA values obtained from the geometric morphometric data and orbit diameter values for the populations
Figure 7 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 7. (a) Frequency of different demographic classes according to rainfall gradient. (b) Frequency of different demographic classes according to water level reservoir gradient. AF = adult females; AM = adult males, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 5 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 5. Monthly distribution of carapace width frequency of individuals of Dilocarcinus pagei Stimpson, 1861. AF = adult females; AM = adult males, CW = carapace width, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 8 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 8. Canonical correspondence analysis between different demographic groups and environmental variables of rainfall and reservoir water level. AF = adult females; AM = adult males, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 6 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 6. (a) Sex ratio by size classes and total number of individuals of Dilocarcinus pagei Stimpson, 1861 sampled during the study period. (b) Monthly sex ratio of individuals of Dilocarcinus pagei. White circles indicate a significant difference in relation to the 1:1 ratio (binomial test, p <.05), and black circles indicate that there was no significant difference. Values above and below 0.5 indicate deviations for males and females, respectively. CW = carapace width.
Figure 4 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 4. Frequency of carapace width of Dilocarcinus pagei Stimpson, 1861. AF = adult females; AM = adult males, CW = carapace width, FEJ = female with eggs and juveniles; JF = juvenile females; JM = juvenile males.
Figure 2 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 2. (a) Dilocarcinus pagei Stimpson, 1861; (b) abdomen width; (c) carapace width; (d) right propodus length; (e) female with eggs; (f) female with eggs and juveniles in the abdominal cavity (both at the same time); (g) female with juveniles in the abdominal cavity. Scale bar: 20 mm.
Figure 1 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 1. Location (a) and characterisation (b–e) of the study area in the Araguari River, Tupaciguara, Minas Gerais, Brazil. The sampled section is shown inside the red circle. b = partially exposed Melo Viana bridge found in the original riverbed. The Melo Viana bridge connected the cities of Araguari and Tupaciguara before the dam´s construction in the 1970s when it was submerged by the reservoir filling. b–d = grasses and macrophytes on the banks; e = burrows on the slopes.
Figure 3 in Population biology of the freshwater crab Dilocarcinus pagei Stimpson, 1861 (Decapoda: Trichodactylidae) in the Araguari River, south-eastern Brazil
Figure 3. Sampled data on local rainfall and water level in the reservoir during the sampling period, from September 2020 to November 2021.
The Investigation of New Biological Markers for Prostate Cancer Diagnosis and Management in Chinese Population
ClinicalTrials.gov study NCT03893929. IPD Sharing: UNDECIDED. Countries: 1. Publications: 13.
Data from: Rapid change in host specificity in a field population of the biological control organism Pasteuria penetrans
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Data from: Population biology of establishment in New Zealand hedgehogs inferred from genetic and historical data: conflict or compromise?
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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.