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535 results for “scavenger”
Invertebrate scavenger data from Tasmanian devil scavenging experiment 2023
We collected data to assess how disease-induced declines of an apex scavenger, the Tasmanian devil (Sarcophilus harrisii), affected carrion use by invertebrate scavengers. We manipulated devil access to pademelon (Thylogale billardierii) carcasses across a gradient of devil density from east to west Tasmania and measured carcass use by invertebrates. We used trap capture rates to estimate abundance of adult and larval carrion beetles (Ptomaphila lacrymosa) and blow fly larvae (Calliphoridae).
Gilby et al- Scavenging across ecosystems dataset
<p>Data detailing the MaxN (i.e. relative abundance) and scavenging rates of vertebrates in four coasl ecosystems (beaches, headlands, coastal lagoons, and estuaries) on the Sunshine Coast, Australia.</p>
ACKR4 Recruits GRK3 Prior to β-arrestins but Can Scavenge Chemokines in the Absence of β-arrestins
<p>Chemokines are essential for guiding cell migration. Atypical chemokine receptors (ACKRs) contribute to the cell migration process by binding, internalizing and degrading local chemokines, which enables the formation of confined gradients. ACKRs are heptahelical membrane spanning molecules structurally related to G-protein coupled receptors (GPCRs), but seem to be unable to signal through G-proteins upon ligand binding. ACKR4 internalizes the chemokines CCL19, CCL21, and CCL25 and is best known for shaping functional CCL21 gradients. Ligand binding to ACKR4 has been shown to recruit β-arrestins that has led to the assumption that chemokine scavenging relies on β-arrestin-mediated ACKR4 trafficking, a common internalization route taken by class A GPCRs. Here, we show that CCL19, CCL21, and CCL25 readily recruited β-arrestin1 and β-arrestin2 to human ACKR4, but found no evidence for β-arrestin-dependent or independent ACKR4-mediated activation of the kinases Erk1/2, Akt, or Src. However, we demonstrate that β-arrestins interacted with ACKR4 in the steady-state and contributed to the spontaneous trafficking of the receptor in the absence of chemokines. Deleting the C-terminus of ACKR4 not only interfered with the interaction of β-arrestins, but also with the uptake of fluorescently labeled cognate chemokines. We identify the GPCR kinase GRK3, and to a lesser extent GRK2, but not GRK4, GRK5, and GRK6, to be recruited to chemokine-stimulated ACKR4. We show that GRK3 recruitment preceded the recruitment of β-arrestins upon ACKR4 engagement and that GRK2/3 inhibition partially interfered with steady-state interaction and chemokine-driven recruitment of β-arrestins to ACKR4. Overexpressing β-arrestin2 accelerated the uptake of fluorescently labeled CCL19, indicating that β-arrestins contribute to the chemokine scavenging activity of ACKR4. By contrast, cells lacking β-arrestins were still capable to take up fluorescently labeled CCL19 demonstrating that β-arrestins are dispensable for chemokine scavenging by ACKR4.</p>
Fig. 2 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species
Fig. 2. Sternal process of Phaenostoma species. A – P. kontax sp. nov.; B – P. posticatum (Sharp, 1887); C – P. stochasma sp. nov.
Fig. 1 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species
Fig. 1. Dorsal and ventral habitus of Phaenostoma posticatum (Sharp, 1887) (Costa Rica). Scale bar = 1.0 mm.
Fig. 4 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species
Fig. 4. Aedeagi of Phaenostoma species. A – P. posticatum (Sharp, 1887) (Costa Rica); B – P. kontax sp. nov. (holotype); C – P. stochasma sp. nov. (holotype; Costa Rica); D – P. stochasma sp. nov. (paratype; Venezuela). Scale bar = 0.2 mm.
Fig. 3 in Redescription of the Neotropical water scavenger beetle genus Phaenostoma (Coleoptera: Hydrophilidae) with description of two new species
Fig. 3. Elytron of Phaenostoma kontax sp. nov. A – entire elytron; B – enlargement of elytral surface.
Figs 1–7 in Enochrus algarum sp. nov., a new hygropetric water scavenger beetle from China (Coleoptera: Hydrophilidae: Enochrinae)
Figs 1–7. Morphology of Enochrus algarum sp. nov. 1–3 – habitus (1 – dorsal view, 2 – lateral view, 3 – ventral view); 4 – mesoventral process; 5–6 – head (5 – ventral view, 6 – dorsal view); 7 – aedeagus. 1–2, 6–7 – male, holotype; 3–5 – female, paratype.
Fig. 1 in Scavenging behavior of an adult Hermann's Tortoise (Testudo hermanni Gmelin, 1789) (Reptilia: Testudinidae)
Fig. 1. The Common Toad found dead on a road (on the left) and the Hermann's Tortoise feeding on it at the same place about 20 days after its death.
Рис. 5. Варианты преΑсказанной Αоменной структуры скавенΑжер-рецепторов гемоцитов моΛΛюсков Planorbarius corneus. Сокращения (зΑесь и ΑаΛее): SR — богатый цистеином Αомен скавенΑжер-рецептора, Filament — Αомен промежуточного фиΛамента, TSP1 — повторы тромбоспонΑина типа 1, KR — крингΛ-Αомен, LDLa — Αомен рецептора Λипопротеинов низкой пΛотности кΛасса А Fig. 5. Variants of the predicted domain structure of scavenger receptors from hemocytes of Planorbarius corneus molluscs. Abbreviations (here and in what follows): SR — scavenger receptor Cys-rich domain, Filament — intermediate filament protein, TSP1 — thrombospondin type 1 repeats, KR — kringle domain, LDLa — low-density lipoprotein receptor domain class A in Pathogen recognition molecules from hemocytes of Planorbarius corneus molluscs (Planorbidae, Pulmonata)
Рис. 5. Варианты преΑсказанной Αоменной структуры скавенΑжер-рецепторов гемоцитов моΛΛюсков Planorbarius corneus. Сокращения (зΑесь и ΑаΛее): SR — богатый цистеином Αомен скавенΑжер-рецептора, Filament — Αомен промежуточного фиΛамента, TSP1 — повторы тромбоспонΑина типа 1, KR — крингΛ-Αомен, LDLa — Αомен рецептора Λипопротеинов низкой пΛотности кΛасса А Fig. 5. Variants of the predicted domain structure of scavenger receptors from hemocytes of Planorbarius corneus molluscs. Abbreviations (here and in what follows): SR — scavenger receptor Cys-rich domain, Filament — intermediate filament protein, TSP1 — thrombospondin type 1 repeats, KR — kringle domain, LDLa — low-density lipoprotein receptor domain class A
Functional plasticity in vertebrate scavenger assemblages in the presence of introduced carnivores
<p>Data for manuscript focusing on the consumption of varying amounts of carrion by coastal scavengers in Queensland, Australia. </p>
Figure 2 in Morphology of the male reproductive tract in the water scavenger beetle Tropisternus collaris Fabricius, 1775 (Coleoptera: Hydrophilidae)
Figure 2 Histology of the male reproductive tract of T. collaris. (A) Longitudinal section of a testis showing the follicles (f); growth (a), maturation (b), and differentiation (c) zones; and vas efferens (ve) opening (arrow) into a vas deferens (vd) with lumen full of spermatozoa (asterisk). (B) Longitudinal section showing detail of the vasa efferentia (ve) in the confluence zone (black arrow) with the vas deferens (vd). The white arrow points to sperm bundles in the vas efferens. The asterisk indicates the lumen of a vas deferens with dissociated bundles. The arrowhead points to the epithelial of the vas deferens. (C and D) Details of the stages of spermatogenesis, showing zones of cell growth (a), maturation (b), and differentiation (c). The arrow points to a sperm bundle. Bars: A and B = 600 µm, C and D = 200 µm.
Fig. 4 in Trophic roles of scavenger beetles in relation to decomposition stages and seasons
Fig. 4. Dominance of beetle guilds observed in cadavers per decomposition stages and seasons, represented in a ternary diagram. Each line of the sides of the triangle is equal to a 5% of the total. The black point corresponds to the equicomposition (33.3% for each guild). The greater point in each line indicates the initial decomposition stage per season.
Fig. 3 in Trophic roles of scavenger beetles in relation to decomposition stages and seasons
Fig. 3. Mean abundance (±SE) of omnivorous beetles per decomposition stages and seasons. (A) Cadavers (c). (B) Traps (st). F, Fresh; B, Bloated; ACD,Active Decay; ADD, Advanced Decay; R, Remains.
Fig. 2 in New information on scavenging and selective feeding behaviour of tyrannosaurids
Fig. 2. Close up of the medial face of the deltopectoral crest of hardosaurid Saurolophus (MPC−D100/764) from the Maastrichtian Bugin Tsav locality in Mongolia. Black arrows indicate some of the drag marks left by the teeth of the theropod, with their orientation also indicated by the direction of the arrow. The grey arrow points to a bite and drag mark where a slight surface drag mark later goes deeper into the bone cortex close to the edge of the crest.
Fig. 3 in New information on scavenging and selective feeding behaviour of tyrannosaurids
Fig. 3. Close−up of bite marks on the on distal end of left humerus of hadrosaurid Saurolophus (MPC−D100/764) from the Maastrichtian Bugin Tsav locality in Mongolia. Black arrows indicate deep scores that penetrate the cortex on the end of the bone. White arrows indicate deep puncture marks on the surface of the bone.
Fig. 1. MPC−D100 in New information on scavenging and selective feeding behaviour of tyrannosaurids
Fig. 1. MPC−D100/764, a left humerus of hadrosaurid Saurolophus from the Maastrichtian Bugin Tsav locality in Mongolia, in medial (A) and lateral (B) views (proximal end to the left and distal to the right) with major areas of bite marks indicated by the black arrows.
Linked collectors and determiners for: Scavenging Amphipods, Porcupine Abyssal Plain Sustained Observatory, North Atlantic, 1985-2016.
Natural history specimen data linked to collectors and determiners held within, "Scavenging Amphipods, Porcupine Abyssal Plain Sustained Observatory, North Atlantic, 1985-2016". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/27448b7d-f4c5-4ccf-9ffc-31c91bf42cec">https://bionomia.net/dataset/27448b7d-f4c5-4ccf-9ffc-31c91bf42cec</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/27448b7d-f4c5-4ccf-9ffc-31c91bf42cec">https://gbif.org/dataset/27448b7d-f4c5-4ccf-9ffc-31c91bf42cec</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Revision of the Neotropical water scavenger beetle genus Globulosis García, 2001 (Coleoptera: Hydrophilidae: Acidocerinae).
Natural history specimen data linked to collectors and determiners held within, "Revision of the Neotropical water scavenger beetle genus Globulosis García, 2001 (Coleoptera: Hydrophilidae: Acidocerinae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/8d61e881-7ac9-48ab-b4bc-7c33c967f353">https://bionomia.net/dataset/8d61e881-7ac9-48ab-b4bc-7c33c967f353</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/8d61e881-7ac9-48ab-b4bc-7c33c967f353">https://gbif.org/dataset/8d61e881-7ac9-48ab-b4bc-7c33c967f353</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Across the Baltic: a new record for an enigmatic black scavenger fly, Zuskamira inexpectata (Pont, 1987) (Sepsidae) in Finland.
Natural history specimen data linked to collectors and determiners held within, "Across the Baltic: a new record for an enigmatic black scavenger fly, Zuskamira inexpectata (Pont, 1987) (Sepsidae) in Finland". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/5898d0f2-2a87-4a26-bfc2-ff977f139f84">https://bionomia.net/dataset/5898d0f2-2a87-4a26-bfc2-ff977f139f84</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/5898d0f2-2a87-4a26-bfc2-ff977f139f84">https://gbif.org/dataset/5898d0f2-2a87-4a26-bfc2-ff977f139f84</a>. Formatted as a Frictionless Data package.
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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)
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DANDI Archive for NWB datasets
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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.