{
  "id": "redfish-hooks-v1",
  "version": "1.0.0",
  "checked": "2026-10-21",
  "scope": "Focused secondary evidence review, not a systematic review, Louisiana field experiment or pooled survival estimate.",
  "sources": [
    {
      "id": "VW2007",
      "authors": "Vecchio & Wenner",
      "year": 2007,
      "doi": "10.1577/M06-163.1",
      "file": "vecchio-wenner-2007.pdf",
      "url": "https://sedarweb.org/documents/s18rd31-catch-and-release-mortality-in-subadult-and-adult-red-drum-captured-with-popular-fishing-hook-types/",
      "location": "Charleston Harbor, South Carolina",
      "locator": "Table 1, p. 894; methods pp. 892–893; adult exclusions p. 895",
      "rights": "Copyrighted paper; retained internally for research. Public output contains attributed factual extraction and our calculations/figures only, not the PDF, copied prose or figures."
    },
    {
      "id": "F2013",
      "authors": "Flaherty et al.",
      "year": 2013,
      "file": "flaherty-2013.pdf",
      "url": "https://sedarweb.org/documents/sedar-49-rd-01-spatial-and-size-distribution-of-red-drum-caught-and-released-in-tampa-bay-florida-and-factors-associated-with-the-post-release-hooking-mortality/",
      "location": "Tampa Bay, Florida",
      "locator": "Methods p. 31, Tables 4–7 pp. 35–38; discussion/conclusion pp. 38–39",
      "rights": "Source publication rights retained by authors/publisher; SEDAR cover is 2016, article is 2013. No source PDF or figure redistributed."
    },
    {
      "id": "BR2005",
      "authors": "Beckwith & Rand",
      "year": 2005,
      "doi": "10.1016/j.fishres.2004.08.023",
      "file": "beckwith-rand-2005.pdf",
      "url": "https://www.releasense.org/wp-content/uploads/2018/06/Beckwith-and-Rand.pdf",
      "location": "Lower Neuse River estuary, North Carolina",
      "locator": "Methods pp. 116–117; Table 1 p. 118; discussion pp. 119–120",
      "rights": "Copyright Elsevier; retained internally. No source PDF, table layout or figure redistributed; public factual counts are attributed."
    }
  ],
  "charleston": [
    {
      "id": "sub-j",
      "group": "Subadult angling",
      "hook": "J-hook",
      "size": "2/0",
      "model": "Eagle Claw 084",
      "offset_degrees": null,
      "n": 57,
      "shallow": 34,
      "deep": 23,
      "deaths": 4,
      "mortality_followup_n": 57,
      "deep_percent": 40.35087719298246,
      "deep_interval_percent": [
        28.617515549595606,
        53.30270757914608
      ],
      "mortality_percent": 7.017543859649122,
      "mortality_interval_percent": [
        2.7626420229066015,
        16.70017009603369
      ]
    },
    {
      "id": "sub-circle",
      "group": "Subadult angling",
      "hook": "Non-offset circle",
      "size": "4/0",
      "model": "Eagle Claw L704",
      "offset_degrees": 0,
      "n": 58,
      "shallow": 52,
      "deep": 6,
      "deaths": 1,
      "mortality_followup_n": 58,
      "deep_percent": 10.344827586206897,
      "deep_interval_percent": [
        4.828140742362896,
        20.78810299248423
      ],
      "mortality_percent": 1.7241379310344827,
      "mortality_interval_percent": [
        0.30500384460675,
        9.140858093468013
      ]
    },
    {
      "id": "sub-offset",
      "group": "Subadult angling",
      "hook": "Offset circle",
      "size": "4/0",
      "model": "Eagle Claw L704, offset 15 degrees",
      "offset_degrees": 15,
      "n": 57,
      "shallow": 46,
      "deep": 11,
      "deaths": 6,
      "mortality_followup_n": 57,
      "deep_percent": 19.29824561403509,
      "deep_interval_percent": [
        11.132746980050532,
        31.340690247763952
      ],
      "mortality_percent": 10.526315789473685,
      "mortality_interval_percent": [
        4.914465852374461,
        21.12281058338703
      ]
    },
    {
      "id": "adult-j",
      "group": "Adult bottom longline",
      "hook": "J-hook",
      "size": "7/0",
      "model": "Eagle Claw 084",
      "offset_degrees": null,
      "n": 60,
      "shallow": 43,
      "deep": 17,
      "deaths": 2,
      "mortality_followup_n": 17,
      "deep_percent": 28.333333333333332,
      "deep_interval_percent": [
        18.506828428432716,
        40.76728516439118
      ],
      "mortality_percent": null,
      "mortality_interval_percent": null
    },
    {
      "id": "adult-circle",
      "group": "Adult bottom longline",
      "hook": "Non-offset circle",
      "size": "9/0",
      "model": "Eagle Claw L2004ELF",
      "offset_degrees": 0,
      "n": 105,
      "shallow": 102,
      "deep": 3,
      "deaths": 2,
      "mortality_followup_n": 3,
      "deep_percent": 2.857142857142857,
      "deep_interval_percent": [
        0.9763839038702329,
        8.065629063731556
      ],
      "mortality_percent": null,
      "mortality_interval_percent": null
    }
  ],
  "charleston_notes": {
    "deep_definition": "Gills, esophagus or stomach; shallow is jaw, inside mouth or tongue.",
    "subadult": "339–825 mm total length; spinning gear in shallow water under 2 m; live mummichogs or cut bait; all followed for 48h after capture/transport. Not a live-shrimp or lure trial.",
    "adult": "660–1138 mm total length; 9–15 m depth; alternating hook types, cut Atlantic mackerel, 30-minute bottom-longline sets. Only deep-hooked adults retained for 48h; shallow-adult deaths are unobserved, not zero.",
    "adult_captures": 167,
    "adult_circle_captures": 107,
    "adult_circle_excluded": 2,
    "adult_exclusions": "Two circle-caught adults excluded by authors because deaths attributed to prior injuries, leaving Table 1 analytical n=105 circle and n=60 J. Table-derived 17/60=28.3% differs from abstract's approximately 30%; use audited table counts explicitly, not invented 18/60.",
    "mortality_inference": "Subadult overall mortality differences not statistically significant in authors' Table 2 (reported P=0.11). Adult selective follow-up prevents treating every shallow adult as a demonstrated 48h survivor. Do not pool groups or advertise a universal mortality reduction.",
    "model_discrepancy": "SCDNR outreach page lists L702G/L200ELF and broad gut-hook percentages; paper methods list L704/L2004ELF. Use paper-specific patterns/counts; do not treat outreach as independent replication or silently combine them."
  },
  "tampa": {
    "source": "F2013",
    "n": 251,
    "deaths": 14,
    "experiments": 9,
    "period": "November 2005–March 2008",
    "length": "203–618 mm standard length; not directly interchangeable with total length",
    "method": "Live-bait mortality experiments using 1/0 J or non-offset circle hooks; 48h net-pen holding. Separate from 1405-fish monthly survey and 237 survivors in later tag analysis.",
    "finding": "Authors associated deep hooking with hook type; mortality with water temperature and hook position, not directly with hook type. No hook-specific counts digitized from figure bars; no pooling with Charleston.",
    "mortality_percent": 5.577689243027889
  },
  "neuse": [
    {
      "year": 1999,
      "hook": "J-style octopus",
      "size": "7/0",
      "rig": "Long/sliding",
      "n": 58,
      "deep": 32,
      "deep_percent": 55.172413793103445
    },
    {
      "year": 1999,
      "hook": "Circle",
      "size": "16/0",
      "rig": "Long/sliding",
      "n": 18,
      "deep": 2,
      "deep_percent": 11.11111111111111
    },
    {
      "year": 2000,
      "hook": "J-style octopus",
      "size": "7/0",
      "rig": "Long/sliding",
      "n": 55,
      "deep": 28,
      "deep_percent": 50.90909090909091
    },
    {
      "year": 2000,
      "hook": "Circle",
      "size": "16/0",
      "rig": "Long/sliding",
      "n": 84,
      "deep": 10,
      "deep_percent": 11.904761904761905
    },
    {
      "year": 2001,
      "hook": "J-style octopus",
      "size": "7/0",
      "rig": "Long/sliding",
      "n": 88,
      "deep": 46,
      "deep_percent": 52.27272727272727
    },
    {
      "year": 2001,
      "hook": "Circle",
      "size": "16/0",
      "rig": "Long/sliding",
      "n": 24,
      "deep": 1,
      "deep_percent": 4.166666666666667
    },
    {
      "year": 2001,
      "hook": "J-style octopus",
      "size": "7/0",
      "rig": "Short/fixed",
      "n": 24,
      "deep": 5,
      "deep_percent": 20.833333333333332
    },
    {
      "year": 2001,
      "hook": "Circle",
      "size": "8/0",
      "rig": "Short/fixed",
      "n": 47,
      "deep": 4,
      "deep_percent": 8.51063829787234
    },
    {
      "year": 2002,
      "hook": "J-style octopus",
      "size": "7/0",
      "rig": "Short/fixed",
      "n": 42,
      "deep": 11,
      "deep_percent": 26.19047619047619
    },
    {
      "year": 2002,
      "hook": "Circle",
      "size": "14/0",
      "rig": "Short/fixed",
      "n": 244,
      "deep": 9,
      "deep_percent": 3.6885245901639343
    },
    {
      "year": 2003,
      "hook": "Circle",
      "size": "14/0",
      "rig": "Long/sliding",
      "n": 158,
      "deep": 34,
      "deep_percent": 21.518987341772153
    }
  ],
  "neuse_notes": "Natural cut mullet; anchored boat with 4–7 unattended rods in 2–6 m. J comparator was Gamakatsu octopus, not Charleston plain-shank J. Gear bundle changed leader length, weight attachment and weight mass together (short/fixed 0.15m/85g; long/sliding 0.5m/56.7g); years differ. Authors' printed 0.5m/18in are approximate and inconsistent conversions; retain metric rather than improve their source. 2003 lacked concurrent J control. Mortality not measured here. These large-adult bottom rigs are not instructions for a shrimp-under-cork setup.",
  "subadult_comparison": {
    "absolute_deep_reduction_points": 30.006049606775562,
    "relative_deep_reduction_percent": 74.36281859070465,
    "scope": "Observed contrast between these hook configurations; not a survival benefit or causal effect isolated from all gear differences."
  }
}