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707 results for “wolf spider”
Data for: Species composition of shoreline wolf spider communities vary with salinity but their diets vary with wrack inflow
<p>Wolf spiders are typically the most common group of arthropod predators on both lake and marine shorelines, because of the high prey availability in these habitats. However, shores are also harsh environments due to flooding and, in proximity to marine waters, to toxic salinity levels. Here, we describe the spider community, prey availabilities, and spider diets between shoreline sites with different salinities, albeit with comparatively small differences (5 vs. 7‰). Despite the small environmental differences, spider communities between low and higher-saline sites showed an almost complete species turnover. At the same time, differences in prey availability or spider gut contents did not match changes in spider species composition but rather changed with habitat characteristics within the region, where spiders collected at sites with thick wrack beds had a different diet than sites with little wrack. These data suggest that shifts in spider communities are due to habitat characteristics rather than prey availabilities, and the most likely candidate restricting species in high salinity would be saline sensitivity. At the same time, species' absences from low-saline habitats remain unresolved.</p>
Light environment interacts with visual displays in a species-specific manner in multimodal signaling wolf spiders
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Data for: Species composition of shoreline wolf spider communities vary with salinity but their diets vary with wrack inflow
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Data from: Plasticity of cold tolerance and body composition in response to varying warming conditions in a temperate wolf spider
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Data for: Traumatic mating causes strict monandry in a wolf spider
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FIGURE 11 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 11. Ovia quinquedens (Dhali, Roy, Sen, Saha & Raychaudhuri, 2012) comb. nov. A female holotype epigynum, ventral. B same, ventral. Figures not to scale and 11A used with the permission of Dr Dhruba Chandra Dhali.
FIGURE 10. A–B Arctosa lesserti Reimoser, 1934. A female lectotype epigynum, ventral. B female paralectotype epigynum, ventral. C Wadicosa ghatica Kronestedt, 2017, female paralectotype from A in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 10. A–B Arctosa lesserti Reimoser, 1934. A female lectotype epigynum, ventral. B female paralectotype epigynum, ventral. C Wadicosa ghatica Kronestedt, 2017, female paralectotype from A. lesserti type series, epigynum, ventral. Scale bars: 0.1 mm. © Christoph Hörweg, NHM, Vienna.
FIGURE 9. A–B Arctosa lesserti Reimoser, 1934. A female lectotype habitus, dorsal. B female paralectotype habitus, dorsal. C Wadicosa ghatica Kronestedt, 2017, female paralectotype from A in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 9. A–B Arctosa lesserti Reimoser, 1934. A female lectotype habitus, dorsal. B female paralectotype habitus, dorsal. C Wadicosa ghatica Kronestedt, 2017, female paralectotype from A. lesserti type series, habitus, dorsal. D label from type tube. Scale bars: A–C, 1 mm. © Christoph Hörweg, NHM, Vienna.
FIGURE 8 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 8. Arctosa khudiensis (Sinha, 1951). A female holotype, epigynum, ventral. B–C female paratype, genitalia: B epigynum, ventral, C vulva, dorsal. Scale bars: 0.2 mm.
FIGURE 7 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 7. Arctosa khudiensis (Sinha, 1951). A female holotype habitus, dorsal. B female paratype habitus, dorsal. C labels from type tube. Scale bars: A–B, 2 mm.
FIGURE 3 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 3. Arctosa himalayensis Tikader & Malhotra, 1980, types of Arctosa tappaensis Gajbe, 2004. A female holotype habitus, dorsal. B male allotype habitus, dorsal. C label from type tube. D label from non-type tube. Scale bars: A–B, 2 mm.
FIGURE 6 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 6. Arctosa indica Tikader & Malhotra, 1980. A–C male allotype, left pedipalp: A ventral, B ventral, enlarged; C retrolateral, enlarged. D–E female holotype, genitalia: D epigynum, ventral, E vulva, dorsal. Scale bars: A, 0.5 mm; B–E, 0.2 mm.
FIGURE 5 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 5. Arctosa indica Tikader & Malhotra, 1980. A female holotype habitus, dorsal. B male allotype habitus, dorsal. C–D labels from type tubes. Scale bars: A–B, 2 mm.
FIGURE 1 in Revision of Indian wolf spiders: I. Genus Arctosa C.L. Koch, 1847 (Araneae Lycosidae, Tricassinae)
FIGURE 1. Arctosa himalayensis Tikader & Malhotra, 1980. A female holotype habitus, dorsal. B female paratype habitus, dorsal. C male allotype habitus, dorsal. D–F labels from type tubes. Scale bars: A–C, 2 mm.
FIGURES 13–18. Alopecosa sulzeri, female. 13–14 in Xerophilic Alopecosa sulzeri (Pavesi, 1873) (Araneae: Lycosidae)-a new wolf spider species in Poland
FIGURES 13–18. Alopecosa sulzeri, female. 13–14 Habitus, dorsal and ventral; 15–16 Epigyne ventral; 17–18 Epigyne, dorsal. Scale bars: 13–14 = 1 mm, 15–16 = 0.5 mm.
FIGURE 1 in Xerophilic Alopecosa sulzeri (Pavesi, 1873) (Araneae: Lycosidae)-a new wolf spider species in Poland
FIGURE 1. Distribution of Alopecosa sulzeri in Europe and its sites in Poland (▲, 1–4) and in neighbouring countries (⚫); PL—Poland, DE—Germany, CZ—Czech Republic, SK—Slovakia, UA—Ukraine, BY—Belarus, LT—Lithuania, RU—Russia (Petrusewicz 1937; Barrientos 1979; Gajdoš et al. 1999; Mikhailov 2013; Arachnologische Gesellschaft 2020; Česká arachnologická společnost 2020; Nentwig et al. 2020).
FIGURES 6–12. Alopecosa sulzeri, male. 6 in Xerophilic Alopecosa sulzeri (Pavesi, 1873) (Araneae: Lycosidae)-a new wolf spider species in Poland
FIGURES 6–12. Alopecosa sulzeri, male. 6 Dorsal habitus; 7 Ventral habitus; 8 Prosoma, dorsal; 9 Abdomen, dorsal; 10 Palpal organ, ventral; 11 Palpal organ, retrolateral; 12 Palpal organ, prolateral. Scale bars: 6–9 = 1 mm, 10 –12 = 0.5 mm.
FIGURES 2–5 in Xerophilic Alopecosa sulzeri (Pavesi, 1873) (Araneae: Lycosidae)-a new wolf spider species in Poland
FIGURES 2–5. Sites of Alopecosa sulzeri in Poland. 2 Mesoxerothermic grassland in Gnojno, the Podlasie Bug Gorge, centraleastern Poland (photograph by I. Hajdamowicz); 3 Stipa grassland in Bielinek, the Lower Oder Valley, northwestern Poland (photograph by P. Sienkiewicz); 4 Stipa grassland in Gozdowice, the Lower Oder Valley, northwestern Poland (photograph by P. Sienkiewicz); 5 Non-steppe xerothermic grassland in Nieszkowice, Trzebnickie Hills, southwestern Poland (photograph by K. Konieczny).
Data from: A probable case of incipient speciation in Schizocosa wolf spiders driven by allochrony, habitat use and female mate choice
There is growing evidence that speciation can occur between populations that are not geographically isolated. The emergence of assortative mating is believed to be critical to this process, but how assortative mating arises in diverging populations is poorly understood. The wolf spider genus Schizocosa has become a model system for studying mechanisms of assortative mating. We conducted a series of experiments to identify the factors that control mate pair formation in a Schizocosa population that includes both ornamented and non-ornamented males. We show that the population also includes two previously unrecognised female phenotypes. One female phenotype mates mostly or exclusively with ornamented males, and the other mates mostly or exclusively with unornamented males. Assortative mating within these groups is maintained by differences in maturation time, microhabitat use, and female mate preference. We conclude that the population is not a single species as previously believed, but rather an incipient species pair with multiple overlapping mechanisms of reproductive isolation. The identification of a new incipient species pair in the well-studied and rapidly speciating Schizocosa clade presents new opportunities for the study of speciation without geographic isolation.
Data from: Web building and silk properties functionally covary among species of wolf spider
While phylogenetic studies have shown covariation between the properties of spider major ampullate (MA) silk and web building, both spider webs and silks are highly plastic so we cannot be sure whether these traits functionally co-vary or just vary across environments that the spiders occupy. Since MaSp2-like proteins provide MA silk with greater extensibility, their presence is considered necessary for spider webs to effectively capture prey. Wolf spiders (Lycosidae) are predominantly non-web building, but a select few species build webs. We accordingly collected MA silk from two web building and six non-web building species found in semi-rural ecosystems in Uruguay to test whether the presence of MaSp2-like proteins (indicated by amino acid composition), silk mechanical properties, and silk nanostructures, were associated with web building across the group. The web building and non-web building species were from disparate subfamilies so we estimated a genetic phylogeny to perform appropriate comparisons. For all of the properties measured we found differences between web building and non-web building species. A phylogenetic regression model confirmed that web building and not phylogenetic inertia influences silk properties. Our study definitively showed an ecological influence over spider silk properties. We expect that the presence of the MaSp2-like proteins and the subsequent nanostructures improves the mechanical performance of silks within the webs. Our study furthers our understanding of spider web and silk co-evolution and the ecological implications of spider silk properties.
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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.