The Compensatory Growth in Juveniles of Sea Bass

Ferrando, Sara; Gambardella, Chiara; Bottaro, Massimiliano; Saroglia, Marco; Terova, Genciana; Tagliafierro, Grazia

doi:10.1111/j.1749-6632.2009.04458.x

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…Our data show that serotonin presence and distribution in the stomach of adult P. antarcticum is similar to that generally observed in temperate perciformes (Radaelli et al 2001;Ferrando et al 2009). …”

Section: Discussionsupporting

confidence: 84%

“…Negative control included the omission of the primary antiserum. Positive control was performed on the stomach of Dicentrarchus labrax (Ferrando et al 2009). …”

Section: Histological and Immunohistochemical Methodsmentioning

confidence: 99%

“…The serotonergic system has been reported in the epidermis, gills, digestive system and brain of temperate (Zaccone et al 1990;Ferrando et al 2005Ferrando et al , 2009Hill and Egginton 2010) and Antarctic fishes (Tagliafierro et al 1998;Oliveri et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

et al. 2011

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Serotonin is a signal molecule with a wide range of functions in vertebrates. In Antarctic fishes, the serotonergic system has been studied in the brain, revealing differences from temperate fishes related to the long-term cold adaptation. To date, little is known regarding the peripheral nervous system, and no information is available for the stomach. In the present work, we contribute to fill the gaps by investigating the presence and the immunohistochemical distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum, a cold-adapted key species of the Southern Ocean shelf food web. The main aim was to investigate the serotonergic system at the gastric level, in order to reveal possible peculiarities related to long-term cold adaptation, similar to the ones seen in the central nervous system of Antarctic fishes. Serotonin immunoreactivity was detected in the pyloric and cardiac mucosa of P. antarcticum stomach with immunopositive cells in the pyloric and cardiac surface epithelia and in the tubular glands. No immunopositive fibers and neuronal cell bodies were found. Our results highlight that the serotonin distribution pattern at the gastric level is similar to that described in temperate teleosts. This finding suggests that in P. antarcticum, long-term adaptations to the Antarctic condition do not affect the serotonergic system at the gastric level. In addition, our data constitute the baseline information for further investigations aimed at clarifying the effects of short-term temperature variations on the gastric serotonergic system of Antarctic species in the frame of the global climate change

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Section: Discussionsupporting

confidence: 84%

“…Negative control included the omission of the primary antiserum. Positive control was performed on the stomach of Dicentrarchus labrax (Ferrando et al 2009). …”

Section: Histological and Immunohistochemical Methodsmentioning

confidence: 99%

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Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

et al. 2011

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“…Our findings that G αtran immunoreactivity was localized to distinct subsets of EECs expand previous data in other animals species (Rozengurt et al 2006; Sutherland et al 2007; Moran et al 2010; Janssen et al 2011, Steinert et al 2011; Mazzoni et al 2013). EECs have been reported in the stomach and intestine of several fish species (Holmgren et al 1982; Reinecke et al 1997; Ku et al 2004; Bermúdez et al 2007; Manning et al 2008), including the sea bass, where 5-HT-, SOM- and GHR-IR EECs have been described (Visus et al 1996; Ferrando et al 2009a; Terova et al 2008). Our study has shown GHR-IR cells in the gastric mucosa, many of which contain G αtran -IR.…”

Section: Discussionmentioning

confidence: 99%

Enteroendocrine profile of α-transducin immunoreactive cells in the gastrointestinal tract of the European sea bass (Dicentrarchus labrax)

Latorre

Mazzoni

Giorgio

et al. 2013

Fish Physiol Biochem

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In vertebrates, chemosensitivity of nutrients occurs through activation of taste receptors coupled with G protein subunits, including α-transducin (Gαtran) and α-gustducin (Gαgust). This study was aimed at characterizing the cells expressing Gαtran-immunoreactivity throughout the mucosa of the sea bass gastrointestinal tract. Gαtran immunoreactive cells were mainly found in the stomach, and a lower number of immunopositive cells were detected in the intestine. Some Gαtran immunoreactive cells in the stomach contained Gαgust immunoreactivity. Gastric Gαtran immunoreactive cells co-expressed ghrelin, obestatin and 5-hydroxytryptamine immunoreactivity. In contrast, Gαtran immunopositive cells did not contain somatostatin, gastrin/cholecystokinin, glucagon-like peptide-1, substance P, or calcitonin gene-related peptide immunoreactivity in any investigated segments of the sea bass gastrointestinal tract. Specificity of Gαtran and Gαgust antisera was determined by Western blot analysis, which identified two bands at the theoretical molecular weight of ~45 and ~40 kDa, respectively, in sea bass gut tissue as well as in positive tissue, and by immunoblocking with the respective peptide, which prevented immunostaining. The results of the present study provide a molecular and morphological basis for a role of taste related molecules in chemosensing in the sea bass gastrointestinal tract.

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“…A CG response has been reported in salmonids (Dobson and Holmes, 1984; Jobling et al, 1993; Maclean and Metcalfe, 2001; Nikki et al, 2004), cyprinids (Russell and Wootton, 1992; Wieser et al, 1992), perciformes (Hayward et al, 1997; Picha et al, 2006, 2008b; Turano et al, 2007, 2008; Ferrando et al, 2009), flatfish (Cho, 2005; Heide et al, 2006), sticklebacks (Zhu et al, 2003), cichlids (Wang et al, 2000), catfish (Gaylord and Gatlin, 2000), and gadids (Jobling et al, 1994). While the degree of growth compensation achieved depends on species, it is nonetheless typically characterized by hyperphagia, improved feed conversion efficiency, and elevated specific growth rate (SGR).…”

Section: Introduction: Compensatory Growth Overviewmentioning

confidence: 93%

Endocrine Regulation of Compensatory Growth in Fish

Won¹,

Borski²

2013

Front. Endocrinol.

128

103

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Compensatory growth (CG) is a period of accelerated growth that occurs following the alleviation of growth-stunting conditions during which an organism can make up for lost growth opportunity and potentially catch up in size with non-stunted cohorts. Fish show a particularly robust capacity for the response and have been the focus of numerous studies that demonstrate their ability to compensate for periods of fasting once food is made available again. CG is characterized by an elevated growth rate resulting from enhanced feed intake, mitogen production, and feed conversion efficiency. Because little is known about the underlying mechanisms that drive the response, this review describes the sequential endocrine adaptations that lead to CG; namely during the precedent catabolic phase (fasting) that taps endogenous energy reserves, and the following hyperanabolic phase (refeeding) when accelerated growth occurs. In order to elicit a CG response, endogenous energy reserves must first be moderately depleted, which alters endocrine profiles that enhance appetite and growth potential. During this catabolic phase, elevated ghrelin and growth hormone (GH) production increase appetite and protein-sparing lipolysis, while insulin-like growth factors (IGFs) are suppressed, primarily due to hepatic GH resistance. During refeeding, temporal hyperphagia provides an influx of energy and metabolic substrates that are then allocated to somatic growth by resumed IGF signaling. Under the right conditions, refeeding results in hyperanabolism and a steepened growth trajectory relative to constantly fed controls. The response wanes as energy reserves are re-accumulated and homeostasis is restored. We ascribe possible roles for select appetite and growth-regulatory hormones in the context of the prerequisite of these catabolic and hyperanabolic phases of the CG response in teleosts, with emphasis on GH, IGFs, cortisol, somatostatin, neuropeptide Y, ghrelin, and leptin.

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The Compensatory Growth in Juveniles of Sea Bass

Cited by 12 publications

References 11 publications

Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

Presence and distribution of serotonin in the stomach of the Antarctic silverfish Pleuragramma antarcticum

Enteroendocrine profile of α-transducin immunoreactive cells in the gastrointestinal tract of the European sea bass (Dicentrarchus labrax)

Endocrine Regulation of Compensatory Growth in Fish

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