caa a22 4500 606229477 CHVBK 20210128101209.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s10695-014-0011-z doi (NATIONALLICENCE)springer-10.1007/s10695-014-0011-z Stress response in silver catfish (Rhamdia quelen) exposed to the essential oil of Hesperozygis ringens [Elektronische Daten] [Cândida Toni, Juan Martos-Sitcha, Ignacio Ruiz-Jarabo, Juan Mancera, Gonzalo Martínez-Rodríguez, Carlos Pinheiro, Berta Heinzmann, Bernardo Baldisserotto] This study investigated the effects of prolonged exposure of silver catfish (Rhamdia quelen) to the essential oil (EO) of Hesperozygis ringens. Ventilatory rate (VR), stress and metabolic indicators, energy enzyme activities, and mRNA expression of adenohypophyseal hormones were examined in specimens that were exposed for 6h to 0 (control), 30 or 50µLL−1 EO of H. ringens in water. Reduction in VR was observed in response to each treatment, but no differences were found between treatments. Plasma glucose, protein, and osmolality increased in fish exposed to 50µLL−1. Moreover, lactate levels increased after exposure to both EO concentrations. Plasma cortisol levels were not changed by EO exposure. Fish exposed to 30µLL−1 EO exhibited higher glycerol-3-phosphate dehydrogenase (G3PDH) activity, while exposure to 50µLL−1 EO elicited an increase in glucose-6-phosphate dehydrogenase (G6PDH), fructose-biphosphatase (FBP), and 3-hydroxyacyl-CoA-dehydrogenase (HOAD) activities compared with the control group. Expression of growth hormone (GH) only decreased in fish exposed to 50µLL−1 EO, while somatolactin (SL) expression decreased in fish exposed to both concentrations of EO. Exposure to EO did not change prolactin expression. The results indicate that GH and SL are associated with energy reorganization in silver catfish. Fish were only slightly affected by 30µLL−1 EO of H. ringens, suggesting that it could be used in practices where a reduction in the movement of fish for prolonged periods is beneficial, i.e., such as during fish transportation. Springer Science+Business Media Dordrecht, 2014 Anesthetic nationallicence Fish nationallicence Hormones expression nationallicence Metabolism nationallicence Ventilatory rate nationallicence Toni Cândida Post-Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut Martos-Sitcha Juan Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut Ruiz-Jarabo Ignacio Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut Mancera Juan Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut Martínez-Rodríguez Gonzalo Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía, 11510, Puerto Real, Cádiz, Spain aut Pinheiro Carlos Post-Graduate Program in Forest Engineering, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut Heinzmann Berta Post-Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut Baldisserotto Bernardo Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Fish Physiology and Biochemistry Springer Netherlands 41/1(2015-02-01), 129-138 0920-1742 41:1<129 2015 41 10695 https://doi.org/10.1007/s10695-014-0011-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10695-014-0011-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Toni Cândida Post-Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Martos-Sitcha Juan Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut NATIONALLICENCE 700 1- Ruiz-Jarabo Ignacio Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut NATIONALLICENCE 700 1- Mancera Juan Department of Biology, Faculty of Marine and Environmental Sciences, University of Cádiz, 11510, Puerto Real, Cádiz, Spain aut NATIONALLICENCE 700 1- Martínez-Rodríguez Gonzalo Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía, 11510, Puerto Real, Cádiz, Spain aut NATIONALLICENCE 700 1- Pinheiro Carlos Post-Graduate Program in Forest Engineering, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Heinzmann Berta Post-Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Baldisserotto Bernardo Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Springer Netherlands 41/1(2015-02-01), 129-138 0920-1742 41:1<129 2015 41 10695