1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Μεταδιδακτορικοί ερευνητές

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Cortisol concentration in scales is a valid indicator for the assessment of chronic stress in European sea bass, Dicentrarchus labrax L
Συγγραφέας:	[EL] Σαμαράς, Αθανάσιος[EN] Samaras, Athanasios [EL] Δημητρόγλου, Αρκάδιος[EN] Dimitroglou, Arkadios [EL] Κόλλιας, Σπυρίδων[EN] Kollias, Spyridon [EL] Σκουραδάκης, Γρηγόριος[EN] Skouradakis, Grigorios [EL] Παπαδάκης, Ιωάννης[EN] Papadakis, Ioannis [EL] Παυλίδης, Μιχαήλ[EN] Pavlidis, Michail
Ημερομηνία:	29/07/2021
Περίληψη:	Chronic stress is known to impair fish health, performance, and welfare. Although physiological responses to acute stress have been well studied and reliable as well as easily quantified indicators, like circulating cortisol, are available in fish, the same is not true for chronic stress. Specifically, commonly used stress indicators cannot reliably identify the effects of chronic stress in fish. Recently, cortisol concentration in fish scales has been proposed as a novel marker of chronic stress. The purpose of the present study was to verify whether circulating physiological stress indicators and cortisol concentrations in fish scales are reliable markers of chronic stress in European sea bass. For that reason, a predictable, repeated chronic stress protocol was developed and applied. Results showed that, in the absence of an additional acute stressor, physiological indicators like plasma cortisol, glucose, lactate and osmolality were not able to differentiate non-stressed from chronically stressed fish. Only when fish were exposed to an additional stressor, cortisol response of the chronically stressed fish was blunted compared to controls. On the contrary, cortisol concentration in scales differentiate non-stressed from chronically stressed fish, being significantly higher in the later. The same was observed when previously identified as High cortisol Responding (HR) fish, but not Low Responding (LR) fish were tested. Collectively, current results confirm that circulating levels of stress indicators cannot mark chronic stress in E. sea bass, while cortisol concentration in fish scales is able to identify chronic stress situation.
Γλώσσα:	Αγγλικά
Σελίδες:	8
DOI:	10.1016/j.aquaculture.2021.737257
ISSN:	0044-8486
Θεματική κατηγορία:	[EL] Άλλες Γεωπονικές επιστήμες[EN] Other agricultural sciences
Λέξεις-κλειδιά:	Chronic stress; Cortisol; European sea bass; Scales cortisol; Stress indicators
Κάτοχος πνευματικών δικαιωμάτων:	© 2021 Published by Elsevier B.V.
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://www.sciencedirect.com/science/article/abs/pii/S0044848621009200
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.sciencedirect.com/journal/aquaculture
Τίτλος πηγής δημοσίευσης:	Aquaculture
Τόμος:	545
Σελίδες τεκμηρίου (στην πηγή):	Article no 737257
Σημειώσεις:	This research is co-financed by Greece and the European Union (European Social Fund- ESF) through the Operational Programme “Human Resources Development, Education and Lifelong Learning” in the context of the project “Reinforcement of Postdoctoral Researchers - 2nd Cycle” (MIS-5033021), implemented by the State Scholarships Foundation (ІΚΥ), and partially funded by EU ERA-Net programme for the Cooperation in Fisheries, Aquaculture and Seafood Processing (COFASP) for the “RobustBass” project.
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές