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Table 5
Fishing efficiency indicators. Fishing percentage of retained specimens below (nP−) and above (nP+) the specific MLS (10 cm) and the subsequent Dratios (values in parentheses indicate the Efron's (1982) 95% CIs.
| Codend | Parameters | Seasons | ||||
|---|---|---|---|---|---|---|
| Spring | Summer | Autumn | Winter | Total | ||
| Com34 | Dratio(%) | 79.7 (63.2–88.6) | 58.7 (46.2–70.3) | 11.5 (8.7–17.0) | 14.4 (10.9–20.1) | 39.2 (27.6–52.9) |
| nP– (%) | 30.6 (21.8–50.4) | 39.0 (33.0–57.7) | 41.5 (31.8–59.0) | 45.1 (39.1–63.0) | 34.6 (26.8–54.6) | |
| nP+ (%) | 97.5 (91.5–99.1) | 69.9 (65.8–83.5) | 86.9 (82.6–92.6) | 81.5 (77.5–89.5) | 82.8 (79.0–90.3) | |
| SG20 | Dratio(%) | 53.5 (2.0–75.9) | 55.0 (9.1–72.4) | 5.7 (0.6–12.5) | 8.4 (0.9–17.4) | 24.9 (1.7–44.7) |
| nP– (%) | 7.9 (0.2–17.5) | 10.2 (0.7–22.2) | 10.4 (1.0–22.6) | 11.3 (1.1–24.7) | 9.0 (0.5–20.3) | |
| nP+ (%) | 86.0 (65.8–95.8) | 21.2 (14.4–32.8) | 46.1 (33.5–63.9) | 37.4 (28.6–52.9) | 41.6 (32.3–56.5) | |
| SG25 | Dratio(%) | 6.7 (0.8–20.6) | 19.9 (5.0–34.6) | 1.1 (0.2–2.8) | 1.9 (0.3–4.4) | 3.7 (0.6–9.9) |
| nP– (%) | 0.5 (0.0–1.5) | 1.2 (0.2–3.0) | 1.5 (0.3–3.6) | 1.8 (0.4–4.3) | 0.8 (0.2–2.3 | |
| nP+ (%) | 80.9 (59.4–92.0) | 11.8 (5.9–22.1) | 36.6 (24.9–54.7) | 28.0 (19.0–42.7) | 32.5 (22.7–48.1) | |
| SG30 | Dratio(%) | 1.2 (0.00–15.4) | 14.5 (0.00–54.1) | 0.3 (0.00–1.8) | 0.6 (0.00–3.1) | 1.0 (0.00–7.9) |
| nP– (%) | 0.1 (0.00–1.2) | 0.2 (0.00–1.6) | 0.3 (0.00–1.7) | 0.3 (0.0–2.0) | 0.2 (0.0–1.4) | |
| nP+ (%) | 84.4 (59.3–90.6) | 3.2 (0.2–8.7) | 24.6 (16.0–35.0) | 17.1 (10.4–25.1) | 22.7 (14.8–32.3) | |
| SRN34 | Dratio(%) | 70.8 (10.3–84.0) | 59.6 (22.7–74.1) | 9.2 (2.4–16.8) | 12.5 (3.9–20.8) | 35.8 (7.3–51.9) |
| nP– (%) | 17.2 (1.0–27.5) | 21.3 (4.6–34.2) | 21.3 (5.3–34.8) | 23.1 (7.2–37.4) | 19.1 (2.7–30.7) | |
| nP+ (%) | 89.0 (75.1–95.8) | 34.5 (26.1–47.8) | 57.4 (45.2–72.5) | 49.2 (38.8–63.6) | 52.6 (42.3–66.4) | |
| SRN42 | Dratio(%) | 53.9 (10.4–76.3) | 52.0 (21.1–64.6) | 7.0 (1.9–11.4) | 8.6 (2.8–12.6) | 22.0 (5.7–37.1) |
| nP– (%) | 7.9 (0.8–16.0) | 11.3 (2.3–22.0) | 12.3 (2.6–23.6) | 10.3 (2.6–16.8) | 6.8 (1.4–11.8) | |
| nP+ (%) | 84.9 (63.6–90.5) | 26.4 (15.1–46.9) | 44.6 (36.8–63.5) | 33.4 (22.7–44.3) | 37.4 (26.7–48.4) | |
| SRN54 | Dratio(%) | 68.8 (0.0–84.6) | 68.0 (0.0–76.8) | 10.4 (0.0–17.3) | 14.5 (0.0–22.3) | 39.5 (0.0–56.0) |
| nP– (%) | 15.5 (0.0–29.9) | 18.6 (0.00–36.4) | 18.4 (0.00–34.5) | 19.7 (0.0–38.2) | 16.9 (0.0–33.0) | |
| nP+ (%) | 87.9 (67.8–95.6) | 22.2 (2.9–39.5) | 43.0 (28.3–61.1) | 35.2 (21.1–51.1) | 39.9 (24.5–55.5) | |
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