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Table 2
Temperature requirements (°C) and basic reproductive characteristics of three crayfish species inhabiting the Drwęca River system.
| Parameters | Astacus astacus | Pacifastacus leniusculus | Faxonius limosus | References |
|---|---|---|---|---|
| Temperature preference | 16.0–21.0 | Kozák et al., 2015 | ||
| Optimum growth temperature | 19.0–20.0 | 19.0–23.0 | 24.0–25.0 | Firkins and Holdich, 1993; Kouba et al., 2010; Simčič et al., 2014 |
| Upper temperature tolerance limit1 | 23.0–25.0 | 25.0–28.0 | 30.0 | Kivivuori, 1994; Simčič et al., 2014; Kozák et al., 2015 |
| Upper lethal temperature2 | 30.0–33.0 | 32.0–35.0 | Becker et al., 1975; Kozák et al., 2015 | |
| Age of sexual maturity | 3–5 | 2–3 | 1–2 | Kozák et al., 2015 |
| Average ovarian fecundity (eggs per female) |
149–242 | 361–371 | 447 | Stypińska, 1978; Chybowski, 2013 |
| Average pleopodal fecundity (eggs per female) |
80–200 | 200–400 | 200–300 | Skurdal et al., 2011; Kozák et al., 2015 |
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