{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:OA3WM676OQICQOMWKASEVG726B","short_pith_number":"pith:OA3WM676","canonical_record":{"source":{"id":"1607.05398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-19T04:24:26Z","cross_cats_sorted":[],"title_canon_sha256":"bb10b9ff7b9999ecbc06af436f73529886b65f201db8dc01e369c7135551c627","abstract_canon_sha256":"352aefd81d9b72a6aa96c501ffc367787d1f007802682ec67f80d3f6578768b7"},"schema_version":"1.0"},"canonical_sha256":"7037667bfe741028399650244a9bfaf049f73fad542d07f202e0fec69a9d4aff","source":{"kind":"arxiv","id":"1607.05398","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.05398","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"arxiv_version","alias_value":"1607.05398v1","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.05398","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"pith_short_12","alias_value":"OA3WM676OQIC","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OA3WM676OQICQOMW","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OA3WM676","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:OA3WM676OQICQOMWKASEVG726B","target":"record","payload":{"canonical_record":{"source":{"id":"1607.05398","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-19T04:24:26Z","cross_cats_sorted":[],"title_canon_sha256":"bb10b9ff7b9999ecbc06af436f73529886b65f201db8dc01e369c7135551c627","abstract_canon_sha256":"352aefd81d9b72a6aa96c501ffc367787d1f007802682ec67f80d3f6578768b7"},"schema_version":"1.0"},"canonical_sha256":"7037667bfe741028399650244a9bfaf049f73fad542d07f202e0fec69a9d4aff","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:55.094954Z","signature_b64":"uXthv68y+d4FgjvgrOox72NsO4vdktCa32SPVnwvs/z7KLuKS8jJfaElhmvAuNFS8AOxZ02O2al6n8UOpcZjDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7037667bfe741028399650244a9bfaf049f73fad542d07f202e0fec69a9d4aff","last_reissued_at":"2026-05-18T01:10:55.094406Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:55.094406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.05398","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dv4VDWrhLQsf2BZ1PYvlTX6a4o64MCtRag1/rs+01wDiPYhDfCIlgvaAAEjRbU4i7HOqsRaKQ1AwHdP6QasoBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T11:40:46.316061Z"},"content_sha256":"c470ae67da8f18f500b9fa2d20440b42d1a47463cd1bcfe4bffed95acb37453c","schema_version":"1.0","event_id":"sha256:c470ae67da8f18f500b9fa2d20440b42d1a47463cd1bcfe4bffed95acb37453c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:OA3WM676OQICQOMWKASEVG726B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"What causes the increase in aggregation as a parasite moves up a food chain?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.PE","authors_text":"R.J.G. Lester, R. McVinish","submitted_at":"2016-07-19T04:24:26Z","abstract_excerpt":"General laws in ecological parasitology are scarce. Here we evaluate data published by over 100 authors to determine whether the number of hosts in a life cycle is associated with the degree of aggregation of fish parasites at different stages. Parasite species were grouped taxonomically to produce 20 or more data points per group as far as possible. Most parasites that remained at one trophic level were less aggregated than those that had passed up a food chain. We use a stochastic model to show that high parasite overdispersion in predators can be solely the result of the accumulation of par"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.05398","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TJljXft0gd3v/NA6ctx68965nD8pzzFha+0HYRvwBE3DWAH1BP1f9LCrqFxfDQeMweofKY+secLk6OVZk557Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T11:40:46.316414Z"},"content_sha256":"a15e21fa15f97423824a0626a504c7348c52aaad3a0c6a057eef59d97806a915","schema_version":"1.0","event_id":"sha256:a15e21fa15f97423824a0626a504c7348c52aaad3a0c6a057eef59d97806a915"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OA3WM676OQICQOMWKASEVG726B/bundle.json","state_url":"https://pith.science/pith/OA3WM676OQICQOMWKASEVG726B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OA3WM676OQICQOMWKASEVG726B/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T11:40:46Z","links":{"resolver":"https://pith.science/pith/OA3WM676OQICQOMWKASEVG726B","bundle":"https://pith.science/pith/OA3WM676OQICQOMWKASEVG726B/bundle.json","state":"https://pith.science/pith/OA3WM676OQICQOMWKASEVG726B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OA3WM676OQICQOMWKASEVG726B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:OA3WM676OQICQOMWKASEVG726B","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"352aefd81d9b72a6aa96c501ffc367787d1f007802682ec67f80d3f6578768b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-19T04:24:26Z","title_canon_sha256":"bb10b9ff7b9999ecbc06af436f73529886b65f201db8dc01e369c7135551c627"},"schema_version":"1.0","source":{"id":"1607.05398","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.05398","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"arxiv_version","alias_value":"1607.05398v1","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.05398","created_at":"2026-05-18T01:10:55Z"},{"alias_kind":"pith_short_12","alias_value":"OA3WM676OQIC","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OA3WM676OQICQOMW","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OA3WM676","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:a15e21fa15f97423824a0626a504c7348c52aaad3a0c6a057eef59d97806a915","target":"graph","created_at":"2026-05-18T01:10:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"General laws in ecological parasitology are scarce. Here we evaluate data published by over 100 authors to determine whether the number of hosts in a life cycle is associated with the degree of aggregation of fish parasites at different stages. Parasite species were grouped taxonomically to produce 20 or more data points per group as far as possible. Most parasites that remained at one trophic level were less aggregated than those that had passed up a food chain. We use a stochastic model to show that high parasite overdispersion in predators can be solely the result of the accumulation of par","authors_text":"R.J.G. Lester, R. McVinish","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-19T04:24:26Z","title":"What causes the increase in aggregation as a parasite moves up a food chain?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.05398","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:c470ae67da8f18f500b9fa2d20440b42d1a47463cd1bcfe4bffed95acb37453c","target":"record","created_at":"2026-05-18T01:10:55Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"352aefd81d9b72a6aa96c501ffc367787d1f007802682ec67f80d3f6578768b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-19T04:24:26Z","title_canon_sha256":"bb10b9ff7b9999ecbc06af436f73529886b65f201db8dc01e369c7135551c627"},"schema_version":"1.0","source":{"id":"1607.05398","kind":"arxiv","version":1}},"canonical_sha256":"7037667bfe741028399650244a9bfaf049f73fad542d07f202e0fec69a9d4aff","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7037667bfe741028399650244a9bfaf049f73fad542d07f202e0fec69a9d4aff","first_computed_at":"2026-05-18T01:10:55.094406Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:55.094406Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uXthv68y+d4FgjvgrOox72NsO4vdktCa32SPVnwvs/z7KLuKS8jJfaElhmvAuNFS8AOxZ02O2al6n8UOpcZjDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:55.094954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.05398","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c470ae67da8f18f500b9fa2d20440b42d1a47463cd1bcfe4bffed95acb37453c","sha256:a15e21fa15f97423824a0626a504c7348c52aaad3a0c6a057eef59d97806a915"],"state_sha256":"637167ab5730f372e2ae88c6a746fdee349a4ef5c7bd5f410285925abcca73cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tqbKg0PbbmYBzmYJK1HsPHsT2g2lOKhOWkUyi2nyNqU5suncymM9Yf71UzQbP9bEv+7ZeNdowaeyXZKyQ8AaCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T11:40:46.318910Z","bundle_sha256":"7bbd0c4bc67cae6e8609ac3143b9689cf9f8bd87ab351a430e02db8b733da7b9"}}