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26,253 results for “Spider”
Fig. 5 in Nihonella gen. nov., a new troglophilic genus of dwarf spiders from Japan with a discussion on its phylogenetic position within the subfamily Erigoninae (Araneae, Linyphiidae)
Fig. 5. Bayesian inference phylogenetic tree of Erigoninae and other subfamilies of Linyphiidae based on the five concatenated genes discussed in the text. Each color denotes a different subfamily while the Savignia group is indicated in blue. The phylogenetic position of the genus Nihonella gen. nov. is highlighted in red. Numbers at each node denote posterior probability support. Branch lengths are scaled in relation to the number of substitutions per site.
Data from: Host manipulation by an ichneumonid spider ectoparasitoid that takes advantage of preprogrammed web-building behaviour for its cocoon protection
Host manipulation by parasites and parasitoids is a fascinating phenomenon within evolutionary ecology, representing an example of extended phenotypes. To elucidate the mechanism of host manipulation, revealing the origin and function of the invoked actions is essential. Our study focused on the ichneumonid spider ectoparasitoid Reclinervellus nielseni, which turns its host spider (Cyclosa argenteoalba) into a drugged navvy, to modify the web structure into a more persistent cocoon web so that the wasp can pupate safely on this web after the spider's death. We focused on whether the cocoon web originated from the resting web that an unparasitized spider builds before moulting, by comparing web structures, building behaviour and silk spectral/tensile properties. We found that both resting and cocoon webs have reduced numbers of radii decorated by numerous fibrous threads and specific decorating behaviour was identical, suggesting that the cocoon web in this system has roots in the innate resting web and ecdysteroid-related components may be responsible for the manipulation. We also show that these decorations reflect UV light, possibly to prevent damage by flying web-destroyers such as birds or large insects. Furthermore, the tensile test revealed that the spider is induced to repeat certain behavioural steps in addition to resting web construction so that many more threads are laid down for web reinforcement.
Data from: Independently evolved and gene flow‐accelerated pesticide resistance in two‐spotted spider mites
<p>Pest species are often able to develop resistance to pesticides used to control them, depending on how rapidly resistance can emerge within a population or spread from another resistant population. We examined the evolution of bifenazate resistance in China in the two‐spotted spider mite (TSSM) <em>Tetranychus</em> <em>uticae</em> Koch (Acari: Tetranychidae), one of the most resistant arthropods, by using bioassays, detection of mutations in the target <em>cytb</em> gene, and population genetic structure analysis using microsatellite markers. Bioassays showed variable levels of resistance to bifenazate. The <em>cytb</em> mutation G126S, which confers medium resistance in TSSM to bifenazate, had previously been detected prior to the application of bifenazate and was now widespread, suggesting likely resistance evolution from standing genetic variation. G126S was detected in geographically distant populations across different genetic clusters, pointing to the independent origin of this mutation in different TSSM populations. A novel A269V mutation linked to a low‐level resistance was detected in two southern populations. Widespread resistance associated with a high frequency of the G126S allele was found in four populations from the Beijing area which were not genetically differentiated. In this case, a high level of gene flows likely accelerated the development of resistance within this local region, as well as into an outlying region distant from Beijing. These findings, therefore, suggest patterns consistent with both local evolution of pesticide resistance as well as an impact of migration, helping to inform resistance management strategies in TSSM.</p>
Figs. 25-29. Hesperocranum rothi, new species. 25. Palp, prolateral view. 26. Palp, ventral view. 27. Palp, retrolateral view. 28. Epigynum, ventral view. 29 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 25-29. Hesperocranum rothi, new species. 25. Palp, prolateral view. 26. Palp, ventral view. 27. Palp, retrolateral view. 28. Epigynum, ventral view. 29. Epigynum, dorsal view.
Figs. 21-24 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 21-24. Hesperocranum rothi, new species, male palp. 21. Prolateral view. 22. Retrolateral view. 23. Prolateral view of embolar region. 24. Ventral view.
Figs. 17-20 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 17-20. Hesperocranum rothi, new species, female. 17. Chelicerae and eye region, anterior view. 18. Eye region, dorsal view. 19. Epigynum, ventral view. 20. Posterior median spinnerets, anterior end towards top of photo. Original magnification = 700 x.
Figs. 13-16. Clubionidae, leg I. 13, 14 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 13-16. Clubionidae, leg I. 13, 14. Clubiona canadensis Emerton, female, left tibia, lateral view. 15, 16. Cheiracanthium mildei L. Koch, female. 15. Right tibia, ventrolateral view. 16. Right tarsus, sublateral view.
Figs. 9-12 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 9-12. Liocranidae and Clubionidae, leg I. 9, 10. Drassinella gertschi Platnick and Ubick, female. 9. Left tibia and metatarsus, sublateral view. 10. Left tarsus, ventrolateral view. 11. Phrurotimpus sp., female, left tibia, ventrolateral view. 12. Cheiracanthium mildei L. Koch, female, spine, lateral view.
Figs. 5-8. Liocranidae, leg I. 5, 6 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 5-8. Liocranidae, leg I. 5, 6. Mesiotelus virgulatus (Blackwall), female. 7, 8. Liocranum rupicola (Walckenaer), male. 5, 7. Right tibia and metatarsus, sublateral view. 6. Right tarsus, lateral view. 8. Right tarsus, sublateral view.
Figs. 23-26. 23, 24 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 23-26. 23, 24. Cybaeodes marinae Di Franco. 25, 26. C. sardus, new species. 23. Left male palp, ventral view. 24. Same, retrolateral view. 25. Epigynum, ventral view. 26. Epigynum, dorsal view.
Figs. 19-22. 19, 20. Cybaeodes carusoi, new species. 21, 22. C. alicatai, new species. 19. Left male palp, ventral view. 20. Same, retrolateral view. 21. Epigynum, ventral view. 22 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 19-22. 19, 20. Cybaeodes carusoi, new species. 21, 22. C. alicatai, new species. 19. Left male palp, ventral view. 20. Same, retrolateral view. 21. Epigynum, ventral view. 22. Same, dorsal view.
Figs. 15-18. Cybaeodes avolensis, new species. 15. Left male palp, ventral view. 16. Same, retrolateral view. 17. Epigynum, ventral view. 18 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 15-18. Cybaeodes avolensis, new species. 15. Left male palp, ventral view. 16. Same, retrolateral view. 17. Epigynum, ventral view. 18. Same, dorsal view.
Figs. 11-14 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 11-14. Cybaeodes molara (Roewer). 11. Left male palp, ventral view. 12. Same, retrolateral view. 13. Epigynum, ventral view. 14. Same, dorsal view.
Figs. 1-4 in On Hesperocranum, A New Spider Genus from Western North America (Araneae, Liocranidae)
Figs. 1-4. Hesperocranum rothi, new species, male. 1. Left tibia and metatarsus I, sublateral view. 2. Tibia I, ventrolateral view. 3. Tip of tarsus I, sublateral view. 4. Tarsus I, lateral view of midventral region.
Figs. 7-10 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 7-10. Cybaeodes marinae Di Franco, female. 7, 8. Tarsus I, ventral views. 9. Trichobothrial base from tarsus I. 10. Tarsal organ from leg I.
Figs. 1-6 in On The Relationships of the Spider Genus Cybaeodes (Araneae, Dionycha)
Figs. 1-6. Cybaeodes marinae Di Franco, spinnerets. 1-3. Female. 4-6. Male. 1, 4. Anterior lateral spinnerets. 2, 5. Posterior median spinnerets. 3, 6. Posterior lateral spinnerets.
Figs. 4 6 in Araneae Spider.- Zoological Survey of India
Figs. 4 6.: Oxyopes tikaderi sp. nov.: 4. Dorsal view of female, legs omitted. 5. Epigyne. 6. Internal genitalia.
Figs. 1 3 in Araneae Spider.- Zoological Survey of India
Figs. 1 3: Oedignatha shillongensis sp. nov.: 1. dorsal view of female, legs omitted. 2. Epigyne. 3. Internal genitalia
FIGURES 31 – 34. Edwardsya simoni comb. nov. 31 in Edwardsya, a new genus of jumping spiders from South America (Araneae: Salticidae: Freyina)
FIGURES 31 – 34. Edwardsya simoni comb. nov. 31 reddish scales on male head, dorsal; 32 dark scales on male head, lateral; 33 white scales on male carapace; 34 epiandrous fusules, ventral (arrows).
FIGURES 35 – 38. Edwardsya simoni comb. nov. 35 in Edwardsya, a new genus of jumping spiders from South America (Araneae: Salticidae: Freyina)
FIGURES 35 – 38. Edwardsya simoni comb. nov. 35 male left chelicera, retrolateral; 36 long, white scales of dorsal male palpal femur; 37 white scales forming the stripe on lateral carapace; 38 same, detail.
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.