Fish growth, physiological stress, and tissue condition in response to rate of temperature change during cool or warm diel thermal cycles
| العنوان: | Fish growth, physiological stress, and tissue condition in response to rate of temperature change during cool or warm diel thermal cycles |
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| المؤلفون: | J. Mac Law, Bernard W. Sweeney, William H. Eldridge |
| المصدر: | Canadian Journal of Fisheries and Aquatic Sciences. 72:1527-1537 |
| بيانات النشر: | Canadian Science Publishing, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Ecology, Fish species, Fish growth, Fish |
| الوصف: | The effect of the rate of temperature change on fish was studied by exposing a variety of North American fish species to diel temperature cycles containing rates of change of 0.8, 1.1, 2.2, or 4.4 °C·h−1. During a simulated cool season (3.9–11.7 °C), bluntnose minnow (Pimephales notatus), spotfin shiner (Cyprinella spiloptera), and white sucker (Catostomus commersonii), but not smallmouth bass (Micropterus dolomieu), gained mass in response to 0.8, 1.1, or 2.2 °C·h−1 but not constant mean temperature. White sucker did not grow under 4.4 °C·h−1, which was slower than expected based upon bioenergetics models. Physiological indicators of acute stress (day 1 cortisol), chronic stress (day 44 cortisol and triglycerides), and histomorphological measures suggested no effect of treatment. During a simulated warm season (20.0–27.8 °C), growth by channel catfish (Ictalurus punctatus), rosyside dace (Clinostomus funduloides), smallmouth bass, and spotfin shiner was not altered by any rate of temperature change; however, walleye (Sander vitreus) and white sucker grew slower than expected under 4.4 °C·h−1. Physiological indicators of acute stress (day 1 cortisol), chronic stress (day 29 cortisol and triglycerides), and histomorphological measures suggested no effect of treatment. Chronic exposure to temperature change of 4.4 °C·h−1 may not induce an acute or chronic stress response but may slightly impair growth for some species. |
| تدمد: | 1205-7533 0706-652X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::be25c2c0573a3dc0bdb2ecda1d5fcc3e https://doi.org/10.1139/cjfas-2014-0350 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........be25c2c0573a3dc0bdb2ecda1d5fcc3e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 12057533 0706652X |
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