Chronic environmental warming alters cardiovascular and haematological stress responses in European perch (Perca fluviatilis)
| العنوان: | Chronic environmental warming alters cardiovascular and haematological stress responses in European perch (Perca fluviatilis) |
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| المؤلفون: | Erik Sandblom, L. Fredrik Sundström, Anders Adill, Teija Aho, Fredrik Jutfelt, Andreas Ekström |
| المصدر: | Journal of Comparative Physiology B. 186:1023-1031 |
| بيانات النشر: | Springer Science and Business Media LLC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Fish Proteins, 030110 physiology, 0301 basic medicine, medicine.medical_specialty, Physiology, Acclimatization, Blood Pressure, Global Warming, Biochemistry, Cardiovascular Physiological Phenomena, Hemoglobins, 03 medical and health sciences, Endocrinology, Heart Rate, Stress, Physiological, Internal medicine, Heart rate, medicine, Animals, Ecology, Evolution, Behavior and Systematics, Perch, biology, Temperature, Cardiorespiratory fitness, biology.organism_classification, Pulse pressure, 030104 developmental biology, Blood pressure, Hematocrit, Perches, Ectotherm, Ventricular pressure, Animal Science and Zoology |
| الوصف: | Environmental warming and acute stress increase cardiorespiratory activity in ectothermic animals like fish. While thermal acclimation can buffer the direct thermal effects on basal cardiorespiratory function during chronic warming, little is known about how acclimation affects stress-induced cardiorespiratory responses. We compared cardiovascular and haematological responses to chasing stress in cannulated wild European perch (Perca fluviatilis) from a reference area at natural temperature (16 °C) with perch from the ‘Biotest enclosure’; an experimental system chronically warmed (22 °C) by effluents from a nuclear power plant. Routine blood pressure was similar, but Biotest perch had slightly higher resting heart rate (59.9 ± 2.8 vs 51.3 ± 2.9 beats min−1), although the Q 10 for heart rate was 1.3, indicating pronounced thermal compensation. Chasing stress caused hypertension and a delayed tachycardia in both groups, but the maximum heart rate increase was 2.5-fold greater in Biotest fish (43.3 ± 4.3 vs 16.9 ± 2.7 beats min−1). Moreover, the pulse pressure response after stress was greater in reference fish, possibly due to the less pronounced tachycardia or a greater ventricular pressure generating capacity and thermally mediated differences in aortic compliance. Baseline haematological status was also similar, but after chasing stress, the haematocrit was higher in Biotest fish due to exacerbated red blood cell swelling. This study highlights that while eurythermal fishes can greatly compensate routine cardiorespiratory functions through acclimation processes, stress-induced responses may still differ markedly. This knowledge is essential when utilising cardiorespiratory variables to quantify and compare stress responses across environmental temperatures, and to forecast energetic costs and physiological constraints in ectothermic animals under global warming. |
| تدمد: | 1432-136X 0174-1578 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68dc13ad121e2b3e549b683df0ebac04 https://doi.org/10.1007/s00360-016-1010-4 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....68dc13ad121e2b3e549b683df0ebac04 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1432136X 01741578 |
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