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1,890 results for “cooperative”
Data from: The extracellular and cytoplasmic domains of Syndecan cooperate postsynaptically to promote synapse growth at the Drosophila neuromuscular junction
The heparan sulfate proteoglycan (HSPG) Syndecan (Sdc) is a crucial regulator of synapse development and growth in both vertebrates and invertebrates. In Drosophila, Sdc binds via its extracellular heparan sulfate (HS) sidechains to the receptor protein tyrosine phosphatase LAR to promote the morphological growth of the neuromuscular junction (NMJ). To date, however, little else is known about the molecular mechanisms by which Sdc functions to promote synapse growth. Here we show that all detectable Sdc found at the NMJ is provided by the muscle, strongly suggesting a post-synaptic role for Sdc. We also show that both the cytoplasmic and extracellular domains of Sdc are required to promote synapse growth or to rescue Sdc loss of function. We report the results of a yeast two-hybrid screen using the cytoplasmic domains of Sdc as bait, and identify several novel candidate binding partners for the cytoplasmic domains of Sdc. Together, these studies provide new insight into the mechanism of Sdc function at the NMJ, and provide enticing future directions for further exploring how Sdc promotes synapse growth.
Data from: Microbial expansion-collision dynamics promote cooperation and coexistence on surfaces
Microbes colonizing a surface often experience colony growth dynamics characterized by an initial phase of spatial clonal expansion followed by collision between neighboring colonies to form potentially genetically heterogeneous boundaries. For species with life cycles consisting of repeated surface colonization and dispersal, these spatially-explicit "expansion-collision dynamics" generate periodic transitions between two distinct selective regimes, "expansion competition" and "boundary competition", each one favoring a different growth strategy. We hypothesized that this dynamic could promote stable coexistence of expansion- and boundary-competition specialists by generating time-varying, negative frequency-dependent selection that insulates both types from extinction. We tested this experimentally in budding yeast by competing an exo-enzyme secreting "cooperator" strain (expansion-competition specialists) against non-secreting "defectors" (boundary-competition specialists). As predicted, we observed cooperator-defector coexistence or cooperator dominance with expansion-collision dynamics, but only defector dominance otherwise. Also as predicted, the steady-state frequency of cooperators was determined by colonization density (the average initial cell-cell distance) and cost of cooperation. Lattice-based spatial simulations give good qualitative agreement with experiments, supporting our hypothesis that expansion-collision dynamics with costly public goods production is sufficient to generate stable cooperator-defector coexistence. This mechanism may be important for maintaining public-goods cooperation-and-conflict in microbial pioneer species living on surfaces.
Data from "Cooperative Management of Ecosystem Services: Coalition Formation, Landscape Structure and Policies"
<p>Simulated data generated to perform the simulations of the paper "Bareille, F., Zavalloni, M., Raggi, M., & Viaggi, D. (2021). Cooperative management of ecosystem services: coalition formation, landscape structure and policies. Environmental and Resource Economics, 79(2), 323-356."</p>
Decline and Fall: the causes of group failure in cooperatively breeding meerkats
In many social vertebrates, variation in group persistence exerts an important effect on individual fitness and population demography. However, few studies have been able to investigate the failure of groups or the causes of the variation in their longevity. We use data from a long-term study of cooperatively breeding meerkats, Suricata suricatta, to investigate the different causes of group failure and the factors that drive these processes. Many newly formed groups failed within a year of formation and smaller groups were more likely to fail due to collapse. Groups that breed successfully and increase their size, could persist for several years, even decades. For long lived groups, the principal cause of failure for was infection with tuberculosis, Mycobacterium suricattae, a fatal disease that commonly spread throughout the group and killing group members. Infection risk was higher in groups with mobile individuals, that were small or experienced immigration.
Unified establishment and epigenetic inheritance of DNA methylation through cooperative MET1 activity
<p>Input data file for codes in GitHub repository: </p> <p>https://github.com/BriffaAKR/gbM_modelling</p> <p>File should be upzipped and inserted into folder: </p> <p><strong>Sim_Input_Files_Final</strong></p>
Supplemental Material: Dynamic Team Heterogeneity in Cooperative Coevolutionary Algorithms
<p>Supplemental videos for the paper "Dynamic Team Heterogeneity in Cooperative Coevolutionary Algorithms".</p> <p>multirover_720.mp4: Best solutions evolved for the multi-rover task.</p> <p>soccer_720.mp4: Best solutions evolved for the soccer task.</p>
COOPERATION OF RESEARCHERS IN SOCIAL AND HUMANITARIAN SCIENCES IN CARRYING OUT SCIENTIFIC RESEARCH ON THE EMERGENCE AND DEVELOPMENT OF THE STATE AND LAW.
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Male (left) and female Fire-maned Bowerbird Sericulus bakeri, the endemic bowerbird of the Adelbert Mountains (William Cooper, reproduced from Cooper & Forshaw 1977, with the kind permission of Dr Wendy Cooper) in Avifauna of the Adelbert Mountains, New Guinea: why is Fire-maned Bowerbird Sericulus bakeri the mountains' only endemic bird species?
Male (left) and female Fire-maned Bowerbird Sericulus bakeri, the endemic bowerbird of the Adelbert Mountains (William Cooper, reproduced from Cooper & Forshaw 1977, with the kind permission of Dr Wendy Cooper)
Historical Self-Governance and Norms of Cooperation
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Supplementary material 4 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
FULL dataset : Explanation note: Nexus file of the aligned FULL dataset for 82 taxa.
Supplementary material 3 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
COI dataset : Explanation note: Nexus file of the aligned COI dataset for 82 taxa.
Figures 92-100 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 92-100 Idiosoma clypeatum sp. n., female (WAM T108516) from Karara (Western Australia; YAL). 92–93 Carapace and abdomen, dorsal view 94 Carapace, lateral view 95 Eyes, dorsal view 96 Abdomen, posterior view 97 Sternum, ventral view 98 Leg I, prolateral view 99 Leg I, retrolateral view 100 Spermathecae, dorsal view. Scale bars 2.0 (92–93, 98–99), 0.5 (100). SP3–4 = sigilla pairs 3–4.
Figures 89-91 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 89-91 Idiosoma clypeatum sp. n., male holotype (WAM T96452) from Albion Downs (Western Australia; MUR), pedipalp. 89 Retrolateral view 90 Retroventral view 91 Prolateral view. Scale bar 2.0.
Figures 79-88 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 79-88 Idiosoma clypeatum sp. n., male holotype (WAM T96452) from Albion Downs (Western Australia; MUR), somatic morphology. 79–80 Carapace and abdomen, dorsal view 81 Carapace, lateral view 82 Eyes, dorsal view 83 Mouthparts, ventral view 84 Sternum, ventral view 85 Abdomen, posterior view 86 Leg I, prolateral view 87 Leg I tibia, clasping spurs, prolateral view 88 Leg I tibia, proventral view. Scale bars 2.0. SP2–4 = sigilla pairs 2–4.
Figures 67-69 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 67-69 Idiosoma arenaceum sp. n., male holotype (WAM T139527) from Zuytdorp (Western Australia; GES), pedipalp. 67 Retrolateral view 68 Retroventral view 69 Prolateral view. Scale bar 2.0.
Figures 70-78 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 70-78 Idiosoma arenaceum sp. n., female (AMS KS6393) from Geraldton (Western Australia; GES). 70–71 Carapace and abdomen, dorsal view 72 Carapace, lateral view 73 Eyes, dorsal view 74 Abdomen, posterior view 75 Sternum, ventral view 76 Leg I, prolateral view 77 Leg I, retrolateral view 78 Spermathecae, dorsal view. Scale bars 2.0 (70–71, 76–77), 0.5 (78). SP3–4 = sigilla pairs 3–4.
Figures 57-66 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 57-66 Idiosoma arenaceum sp. n., male holotype (WAM T139527) from Zuytdorp (Western Australia; GES), somatic morphology. 57–58 Carapace and abdomen, dorsal view 59 Carapace, lateral view 60 Eyes, dorsal view 61 Mouthparts, ventral view 62 Sternum, ventral view 63 Abdomen, posterior view 64 Leg I, prolateral view 65 Leg I tibia, clasping spurs, prolateral view 66 Leg I tibia, proventral view. Scale bars 2.0. SP2–4 = sigilla pairs 2–4.
Figures 39-47 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 39-47 Idiosoma nigrum Main, 1952, female holotype (WAM T3960) from Wongan Hills (Western Australia; AVW). 39–40 Carapace and abdomen, dorsal view 41 Carapace, lateral view 42 Eyes, dorsal view 43 Abdomen, posterior view 44 Sternum, ventral view 45 Leg I, prolateral view 46 Leg I, retrolateral view 47 Spermathecae, dorsal view. Scale bars 2.0 (39–40, 45–46), 0.5 (47). SP3–4 = sigilla pairs 3–4.
Figures 48-56 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 48-56 Idiosoma nigrum Main, 1952, female (WAM T132737) from Minnivale Nature Reserve (Western Australia; AVW). 48–49 Carapace and abdomen, dorsal view 50 Carapace, lateral view 51 Eyes, dorsal view 52 Abdomen, posterior view 53 Sternum, ventral view 54 Leg I, prolateral view 55 Leg I, retrolateral view 56 Spermathecae, dorsal view. Scale bars 2.0 (48–49, 54–55), 0.5 (56). SP3–4 = sigilla pairs 3–4.
Figures 364-372 from: Rix MG, Huey JA, Cooper SJB, Austin AD, Harvey MS (2018) Conservation systematics of the shield-backed trapdoor spiders of the nigrum-group (Mygalomorphae, Idiopidae, Idiosoma): integrative taxonomy reveals a diverse and threatened fauna from south-western Australia. ZooKeys 756: 1-121. https://doi.org/10.3897/zookeys.756.24397
Figures 364-372 Idiosoma sigillatum (O.P.-Cambridge, 1870), female (WAM T129191) from Karnup, Perth (Western Australia; SWA). 364–365 Carapace and abdomen, dorsal view 366 Carapace, lateral view 367 Eyes, dorsal view 368 Abdomen, posterior view 369 Sternum, ventral view 370 Leg I, prolateral view 371 Leg I, retrolateral view 372 Spermathecae, dorsal view. Scale bars 2.0 (364–365, 370–371), 0.5 (372). SP2–4 = sigilla pairs 2–4.
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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.