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12 results for “sheet web spiders”
Fig. 2 in Neriene bovista sp. nov., a new sheet-web spider (Araneae: Linyphiidae) from Korea
Fig. 2. Neriene bovista sp. nov., Holotype male: A. Habitus in dorsal view; B. Habitus in lateral view; C. Eye area from above; D. Chelicera in retrolateral view; E. Endites and labium in ventral view; F. Sternum; G. Palpus in prolateral view; H. Ditto, ventral view; I. Ditto in retrolateral view; J. Ditto in dorsal view; K. Terminal apophysis in ventral view (ALP, anterior projection of L; DLP, dorsal projection of L; DSA, distal suprategular apophysis; E, embolus; EM, embolic membrane; L, lamella; LLP, lateral projection of L; P, paracymbium; PLP, posterior projection of L; R, radix; ST, subtegulum; T, tegulum; TA, terminal apophysis). Scale bars in mm.
Fig. 1 in Neriene bovista sp. nov., a new sheet-web spider (Araneae: Linyphiidae) from Korea
Fig. 1. Distribution of Neriene bovista sp. nov. in South Korea (A), collection site (B), and a sheet-web of the new species (C).
Plant-animal interactions between carnivorous plants, sheet-web spiders, and ground-running spiders as guild predators in a wet meadow community
<p>Plant-animal interactions are diverse and wide-spread shaping ecology, evolution and biodiversity of most ecological communities. Carnivorous plants are unusual in that they can be simultaneously engaged with animals in multiple mutualistic and antagonistic interactions including reversed plant-animal interactions where they are the predator. Competition with animals is a potential antagonistic plant-animal interaction unique to carnivorous plants when they and animal predators consume the same prey.</p> <p>The goal of this field study was to test the hypothesis that under natural conditions, sundews and spiders are predators consuming the same prey thus creating an environment where interkingdom competition can occur.</p> <p>Over 12 months, we collected data on 15 dates in the only protected Highland Rim Wet Meadow Ecosystem in Kentucky where sundews, sheet-web spiders and ground-running spiders co-exist. One each sampling day, we attempted to locate fifteen sites with: 1) both sheet-web spiders and sundews; 2) sundews only; and where neither occurred. Sticky traps were set at each of these sites to determine prey (springtails) activity-density. Ground-running spiders were collected on sampling days. DNA extraction was performed on all spiders to determine which individuals had eaten springtails and comparing this to the density of sundews where the spiders were captured. </p> <p>Sundews and spiders consumed springtails. Springtail activity-densities were lower the higher the density of sundews. Both sheet-web and ground-running spiders were found less often where sundew densities were high. Sheet-web size was smaller where sundews densities were high. </p> <p>The results of this study suggest that asymmetrical exploitative competition occurs between sundews and spiders. Sundews appear to have a greater negative impact on spiders, where spiders probably have little impact on sundews. In this example of interkingdom competition where the asymmetry should be most extreme, amensalism where one competitor experiences no cost of interaction may be occurring. </p>
Plant-animal interactions between carnivorous plants, sheet-web spiders, and ground-running spiders as guild predators in a wet meadow community
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Figure 6 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 6. Different substrates that adult Cambridgea foliata (n = 33) and Cambridgea plagiata (n = 34) build their webs on between November 2015 to June 2016. Frequencies have been converted into proportions to compensate for unequal sample sizes between species. Stars (*) indicate significant (P <0.05) results.
Figure 2 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 2. Results of population surveys including number of: (a) juvenile Cambridgea spp., (b) adult Cambridgea foliata and (c) adult Cambridgea plagiata. Total adult counts include male (black bars) and females (white bars).
Figure 5 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 5. Correlation between web surface area and body size in adult Cambridgea foliata (open circles) and Cambridgea plagiata (closed circles). Web surface area was calculated by multiplying the widest linear measurement with a perpendicular measurement at the midway point of the first measurement.
Figure 8 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 8. Residency times of adult C. foliata and C. plagiata from December 2015 to June 2016, sorted by sex. Individuals who were identified on the first population survey were not included, as it was uncertain on how long individuals had been on the web prior to identification.
Figure 3 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 3. Sex ratio of adult: (a) Cambridgea foliata and (b) Cambridgea plagiata between January and May of 2016. Sex ratio is displayed as the percentage of males observed during each population survey.
Figure 4 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 4. Approximate surface area of the lateral sheet for the webs of adult Cambridgea foliata and Cambridgea plagiata measured between December 2015 and June 2016. Web surface area was calculated by multiplying the widest linear measurement with a perpendicular measurement at the midway point of the first measurement on the horizontal lateral main sheet of the web.
Figure 1. A Cambridgea plagiata female with a in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 1. A Cambridgea plagiata female with a unique set of coloured markings on both foreleg tibia for individual identification. Photo by J. E. McCambridge.
Figure 7. Predominant prey types found from November 2015 in Natural history and ecology of the New Zealand sheet-web spiders Cambridgea plagiata and C. foliata (Araneae: Desidae)
Figure 7. Predominant prey types found from November 2015 to June 2016 on the webs of adult Cambridgea foliata (n = 102) and Cambridgea plagiata (n = 132). Stars (*) indicate significant (P <0.05) differences between the species.
ScienceDex guides
Understand access before you commit
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.