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4,243 results for “seasonality”
Data from: Seasonal dynamics and co-occurrence patterns of honey bee pathogens revealed by high-throughput RT-qPCR analysis
The health of the honey bee Apis mellifera is challenged by introduced parasites that interact with its inherent pathogens and cause elevated rates of colony losses. To elucidate co-occurrence, population dynamics and synergistic interactions of honey bee pathogens, we established an array of diagnostic assays for a high-throughput qPCR platform. Assuming that interaction of pathogens requires co-occurrence within the same individual, single worker bees were analyzed instead of collective samples. Eleven viruses, four parasites and three pathogenic bacteria were quantified in more than one thousand single bees sampled from sixteen disease-free apiaries in Southwest Germany. The most abundant viruses were Black Queen Cell Virus (84%), Lake Sinai Virus 1 (42%), and Deformed Wing Virus B (35%). Forager bees from asymptomatic colonies were infected with two different viruses in average, and simultaneous infection with four to six viruses was common (14%). Also the intestinal parasites Nosema ceranae (96%) and Crithidia mellificae/Lotmaria passim (52%) occurred very frequently. These results indicate that low-level infections in honey bees are more common than previously assumed. All viruses showed seasonal variation, while N. ceranae did not. The foulbrood bacteria Paenibacillus larvae and Melissococcus plutonius were regionally distributed. Spearman's correlations and multiple regression analysis indicated possible synergistic interactions between the common pathogens, particularly for Black Queen Cell Virus. Beyond its suitability for further studies on honey bees, this targeted approach may be, due to its precision, capacity and flexibility, a viable alternative to more expensive, sequencing-based approaches in non-model systems.
Data from: Seasonal variation in foraging group size of crab-eating foxes and hoary foxes in the Cerrado biome, Central Brazil
In regions with a pronounced dry season, such as the Cerrado Biome (Brazilian savannah), climate seasonality may affect food availability for canid species and, consequently, their foraging behavior. We investigated seasonal variation in foraging group size of crab-eating foxes (Cerdocyon thous) and hoary foxes (Pseudalopex vetulus) in the Cerrado region for three consecutive years. Data were obtained by direct observations of foraging foxes during spotlight surveys. Both species were sighted foraging individually or in pairs with or without their juvenile offspring. However, crab-eating foxes foraged in pairs more frequently in the wet season and individually more frequently in the dry season whereas hoary foxes foraged mostly individually throughout the year. The higher frequency of solitary foragers in the dry season is possibly a response to the seasonal shortages in the availability of clumped and locally abundant food resources such as fruit and insects, important items in the diet of the crab-eating fox during the wet season. The absence of seasonal variation in foraging group size of the hoary fox may be related to its specialized food habits, since termites predominate in the diet of this species in both seasons.
Figure 4 in Temporal and seasonal variations in parasites of Metynnis lippincottianus (Characiformes: Characidae), a host from the eastern Amazon (Brazil)
Figure 4. Species richness of parasites in Metynnis lippincottianus from the eastern Amazon (Brazil), during the rainy and dry seasons.
Figure 3 in Temporal and seasonal variations in parasites of Metynnis lippincottianus (Characiformes: Characidae), a host from the eastern Amazon (Brazil)
Figure 3. Species richness of parasites in Metynnis lippincottianus from the eastern Amazon (Brazil), during 2 years.
Figure 2 in Temporal and seasonal variations in parasites of Metynnis lippincottianus (Characiformes: Characidae), a host from the eastern Amazon (Brazil)
Figure 2. Non-metric multidimensional scaling (NMDS) for parasite species in Metynnis lippincottianus from the eastern Amazon (Brazil), during 2011 and 2016. Im: Ichthyophthirius multifiliis, Aj: Anacanthorum jegui, Met: Metacercariae of Digenea, Hr: Hirudinea gen sp., Dl: Dolops longicuda, So: Spinoxyuris oxydoras, Cs: Contracaecum sp., Pi: Procamallanus (S.) inopinatus, Prs: Procamallanus (S.) sp., DDp: Dadayus pacupeva, Pp., Piscinodinium pillulare, Ts: Trichodina sp., Ex: Ergasilus xinguensis. As: Anacanthorus strongylophalus, Us: Urocleidoides sp.
Figure 1 in Temporal and seasonal variations in parasites of Metynnis lippincottianus (Characiformes: Characidae), a host from the eastern Amazon (Brazil)
Figure 1. Collection sites of Metynnis lippincottianus in a tributary of Amazon River, in eastern Amazon (Brazil).
Figure 3 in Elucidating the diel and seasonal calling behaviour of Elachistocleis matogrosso (Anura: Microhylidae)
Figure 3. Estimated probability of detecting the presence of Elachistocleis matogrosso during (a) January and (b) February. Calculations were based on logistic regression, with the detection/lack of detection of the species at the seven monitored sites as the dependent variable and the date as the predictor variable. Dashed lines show the 95% probability of detecting the species.
Figure 1 in Elucidating the diel and seasonal calling behaviour of Elachistocleis matogrosso (Anura: Microhylidae)
Figure 1. Diel pattern of Elachistocleis matogrosso calling activity during an entire year in the Pantanal Matogrossense, Brazil. Calling activity was detected with acoustic monitoring from 15 November of 2013 to 14 November 2014 at one site (a, Table 1) and from 8 June 2015 to 2 June 2016 at six other sites (b–g, Table 1). The diel pattern is expressed as the mean percentage of calls detected at all sites at each recording time. The hours are expressed in 24-h notation of the winter local time (GMT −4).
Figure 2 in Elucidating the diel and seasonal calling behaviour of Elachistocleis matogrosso (Anura: Microhylidae)
Figure 2. Seasonal pattern of Elachistocleis matogrosso calling activity during two entire years in the Pantanal Matogrossense, Brazil. Calling activity was detected with acoustic monitoring from 15 November of 2013 to 14 November 2014 at one site (a, Table 1) and from 8 June 2015 to 2 June 2016 at six other sites (b–g, Table 1). The seasonal pattern is expressed as the percentage of calls detected per month (2013–2014) or as the mean percentage of calls detected at all sites per month (2015–2016).
Development of a versatile source apportionment analysis based on positive matrix factorization: a case study of the seasonal variation of organic aerosol sources in Estonia
<p>This work presents an advanced source apportionment approach that estimates the uncertainties of the positive matrix factorization model. The selection of the environmentally meaningful solutions is challenging in such models and a systematic approach to identify and sort the factors is important. We applied this method to a novel data set covering one yearly cycle at three sites in Estonia. The main results showed that biomass burning dominates in winter, while biogenic sources prevail in summer.</p>
Gradients of seasonality and mortality risk cause rapid shifts in body size of determinate growers
<p>The dataset for the manuscript "Gradients of seasonality and mortality risk cause rapid shifts in body size of determinate growers". The dataset is packed in ZIP archive 'seasonality_size_clines.zip' and contain the results of the dynamic optimization model. Each file in the archive contains data (stored as Matlab workspaces).</p>
FIGURE 11 in A new synonym of the biting midge, Culicoides bottimeri Wirth, with a redescription, new distribution records and seasonal activity data (Diptera: Ceratopogonidae)
FIGURE 11. Seasonal distribution of adult Culicoides bottimeri in Grand County, Utah during 2001–2003.
FIGURES 7–10 in A new synonym of the biting midge, Culicoides bottimeri Wirth, with a redescription, new distribution records and seasonal activity data (Diptera: Ceratopogonidae)
FIGURES 7–10. Culicoides bottimeri: 7, head of female. 8, head of male. 9, ventral view of male genitalia at level of aedeagus and parameres. 10, dorsal view of male genitalia at level of tergite 9 and bases of parameres.
FIGURES 1–6 in A new synonym of the biting midge, Culicoides bottimeri Wirth, with a redescription, new distribution records and seasonal activity data (Diptera: Ceratopogonidae)
FIGURES 1–6. Culicoides bottimeri: 1, genital sclerotization on sternite 8 of female. 2–4, variation in spermathecae of female. 2, specimen from Kerr Co., Texas. 3, specimen from Yavapai Co., Arizona. 4, specimen from Grand Co., Utah. 5–6, variation in apex of tergite 9 of male. 5, specimen from Kerr Co., Texas, without medial point. 6, specimen from Grand Co., Utah, with medial point.
FIGURE 2 in A relict new species of Oreobates (Anura, Strabomantidae) from the Seasonally Dry Tropical Forests of Minas Gerais, Brazil, and its implication to the biogeography of the genus and that of South American Dry Forests
FIGURE 2. Holotype (MZUSP 141708) of Oreobates remotus sp. nov.: Lateral (A), dorsal (B) views of the head; Foot (C) and hand (D). Scale bar = 5 mm.
FIGURE 5 in A relict new species of Oreobates (Anura, Strabomantidae) from the Seasonally Dry Tropical Forests of Minas Gerais, Brazil, and its implication to the biogeography of the genus and that of South American Dry Forests
FIGURE 5. Habitats: General view of the dry forest during rainy season (A), and during the dry season (B); Limestone outcrops ("Rochedo") within the dry forest where adult males of Oreobates remotus sp. nov. were found calling, and where the holotype was collected (C).
FIGURE 8 in A relict new species of Oreobates (Anura, Strabomantidae) from the Seasonally Dry Tropical Forests of Minas Gerais, Brazil, and its implication to the biogeography of the genus and that of South American Dry Forests
FIGURE 8. Bayesian consensus tree topology obtained from the combined molecular data set (cyt b and 16S) showing the placement of Oreobates remotus sp. nov. within Oreobates, and as sister taxon of O. heterodactylus. Numbers above nodes are posterior probabilities.
FIGURE 3 in A relict new species of Oreobates (Anura, Strabomantidae) from the Seasonally Dry Tropical Forests of Minas Gerais, Brazil, and its implication to the biogeography of the genus and that of South American Dry Forests
FIGURE 3. Adult paratopotypes of Oreobates remotus sp. nov. in life: (A) Male (MZUSP 141711) and (B) female (MZUSP 141710).
Figure 6 in First observation and seasonal dynamics of the new invasive planktonic copepod Oithona davisae Ferrari and Orsi, 1984 along the southern Black Sea (Anatolian Coast)
Figure 6. Major shipping lanes in the Black Sea http://www.marinevesseltraffic.com/2013/06/black-sea-marine-traffic.html. © Marine Vessel Traffic. Reproduced by permission of Marine Vessel Traffic. Permission to reuse must be obtained from the rightsholder.
Figure 5 in First observation and seasonal dynamics of the new invasive planktonic copepod Oithona davisae Ferrari and Orsi, 1984 along the southern Black Sea (Anatolian Coast)
Figure 5. (a) Abundance of Oithona davisae (ind. m−3); (b) abundance of female O. davisae with egg sac (ind. m−3).
ScienceDex guides
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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.