... not been established experimentally. Furthermore, whereas cardiac growth is associated with failure of the mammalian heart, pathological cardiac hypertrophy has not previously been described in fish. Here, we show that rainbow trout ( Oncorhynchus mykiss ) treated with cortisol in the diet for 45 days have...

...Cristina Otero-Rodiño; Cristina Velasco; Rosa Álvarez-Otero; Marcos A. López-Patiño; Jesús M. Míguez; José L. Soengas ABSTRACT We previously obtained evidence in rainbow trout for the presence and response to changes in circulating levels of glucose (induced by intraperitoneal hypoglycaemic...

...Marta Librán-Pérez; Inge Geurden; Karine Dias; Genevieve Corraze; Stephane Panserat; José L. Soengas ABSTRACT Using rainbow trout fed with low-fat or high-fat diets, we aimed to determine whether the response of food intake, mRNA abundance of hypothalamic neuropeptides involved in the metabolic...

... long-term changes in nutrient metabolism in rainbow trout. Trout alevins received during the five first days of exogenous feeding either a hyperglucidic (40% gelatinized starch + 20% glucose) and hypoproteic (20%) diet (VLP diet) or a high-protein (60%) glucose-free diet (HP diet, control). Following...

...Marcos A. López-Patiño; Manuel Gesto; Marta Conde-Sieira; José L. Soengas; Jesús M. Míguez Cortisol has been suggested to mediate the effect of stress on pineal melatonin synthesis in fish. Therefore, we aimed to determine how pineal melatonin synthesis is affected by exposing rainbow trout...

...-dependent manner. This study demonstrates for the first time in fish that post-prandial regulation of hepatic lipogenesis and glucokinase in rainbow trout requires the activation of TORC1 signalling. * Author for correspondence ( skiba@st-pee.inra.fr ) AUTHOR CONTRIBUTIONS W.D. performed data...

...Kristin Bianchini; Patricia A. Wright SUMMARY In rainbow trout development, a switch occurs from high-affinity embryonic hemoglobin (Hb) and round, embryonic erythrocytes to lower-affinity adult Hb and oval, adult erythrocytes. Our study investigated the early ontogeny of rainbow trout blood...

...Tracy A. Becker; Brian DellaValle; Hans Gesser; Kenneth J. Rodnick SUMMARY We examined whether exogenous glucose affects contractile performance of electrically paced ventricle strips from rainbow trout under conditions known to alter cardiomyocyte performance, ion regulation and energy demands...

... freshwater fish differing in their sensitivity to high environmental ammonia (HEA). The highly ammonia-sensitive salmonid Oncorhynchus mykiss (rainbow trout), the less ammonia-sensitive cyprinid Cyprinus carpio (common carp) and the highly ammonia-resistant cyprinid Carassius auratus (goldfish) were exposed...

...Marta Conde-Sieira; Rosa Alvarez; Marcos A. López-Patiño; Jesús M. Míguez; Gert Flik; José L. Soengas SUMMARY To assess the hypothesis that cortisol release in rainbow trout is modulated by glucose levels, we first evaluated cortisol release [basal and adrenocorticotropic hormone (ACTH)-regulated...

...Bradley L. Baumgarner; Bruce R. Cooper SUMMARY This study was conducted to evaluate the use of a two-dimensional gas chromatography/time-of-flight mass spectrometry (GC×GC/TOF-MS) metabolomic platform to comprehensively analyze the effect of starvation on whole-animal metabolism in rainbow trout...

...A. Cláudia Figueiredo-Silva; Stéphane Panserat; Sadasivam Kaushik; Inge Geurden; Sergio Polakof SUMMARY This study was designed to assess the effects of dietary fat levels on glucose homeostasis in rainbow trout under prolonged hyperglycaemia induced by high carbohydrate intake. Trout were fed...

... of the fish to respond to additional stressors such as pathogens or exposure to pollutants. In the present study, the possibility that social stress affects the ability of rainbow trout ( Oncorhynchus mykiss ) to tolerate acute increases in water temperature was investigated. To this end, we first evaluated...

...Adolf Michael Sandbichler; Margit Egg; Thorsten Schwerte; Bernd Pelster SUMMARY Permeability of rainbow trout gill pavement cells cultured on permeable supports (single seeded inserts) changes upon exposure to freshwater or treatment with cortisol. The molecular components of this change...

... hormone in teleosts, and this hormone has adverse effects on the myocardium. Strains of rainbow trout ( Oncorhynchus mykiss ) selected for divergent post-stress cortisol levels [high responsive (HR) and low responsive (LR)] have been established as a comparative model to examine how fish with contrasting...

... to different environmental salinities alters levels of circulating melatonin in a number of fish species, including rainbow trout. However, nothing is known regarding salinity effects on melatonin synthesis in the pineal organ, which is the main source of rhythmically produced and secreted melatonin in blood...

... associated with station holding in running water is called entraining. We investigated the entraining behaviour of rainbow trout swimming in the wake of a D-shaped cylinder or sideways of a semi-infinite flat plate displaying a rounded leading edge. Entraining trout moved into specific positions close...

...,North Haugh, St Andrews, Fife KY16 9ST, UK 29 9 2008 © The Company of Biologists Limited 2008 2008 IGF-I IGF-I receptor IGF binding proteins teleost fish growth skeletal muscle myogenesis rainbow trout coho salmon feeding nutrition The insulin-like growth factor...

... analysis of paired pelvic fins to formulate hypotheses of pelvic fin function. Rainbow trout( Oncorhynchus mykiss ) were filmed swimming steadily at slow speeds(0.13–1.36 BL s –1 ) and during manoeuvres(0.21–0.84 BL s –1 ) in a variable speed flow tank. Two high-speed cameras filmed ventral and lateral...

...Elisabeth Plagnes-Juan; Marine Lansard; Iban Seiliez; Françoise Médale; Geneviève Corraze; Sadasivam Kaushik; Stéphane Panserat; Sandrine Skiba-Cassy SUMMARY Rainbow trout have a limited ability to use dietary carbohydrates efficiently and are considered to be glucose intolerant. Administration...