Insulin-like growth factor-I cDNA cloning, gene expression and potential use as a growth rate indicator in Nile tilapia, Oreochromis niloticus

Cruz, E.M.; Brown, Christopher L.; Luckenbach, J. Adam; Picha, Matthew E.; Bolivar, Remedios B.; Borski, Russell J.

doi:10.1016/j.aquaculture.2005.06.039

Cited by 103 publications

(26 citation statements)

References 35 publications

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“…Indeed, a further insight into GH receptor events needs to be gained, especially in the liver of LMB. Thus, based on our results and other researchers' findings [27,34], we believe that hepatic IGF-I mRNA abundance should be a more reliable index to assess growth and nutritional fitness than the other, at least in LMB. However, such an index or a marker should be used with caution since some potential variations from both biological and methodological sources maybe occur [5].…”

Section: Relationships Between Dietary Cho/lip Ratio Gene Expressionmentioning

confidence: 67%

Effects of dietary arginine levels and carbohydrate-to-lipid ratios on mRNA expression of growth-related hormones in largemouth bass, Micropterus salmoides

Chen

Jin

HengYong

et al. 2012

General and Comparative Endocrinology

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Section: Relationships Between Dietary Cho/lip Ratio Gene Expressionmentioning

confidence: 67%

Effects of dietary arginine levels and carbohydrate-to-lipid ratios on mRNA expression of growth-related hormones in largemouth bass, Micropterus salmoides

Chen

Jin

HengYong

et al. 2012

General and Comparative Endocrinology

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“…Prior to exposure to different light patterns, the fish were fasted for 1 month using the procedure described in Vera Cruz et al . (2006).…”

Section: Methodsmentioning

confidence: 99%

“…The IGF‐I mRNA was quantified using the TaqMan real time quantitative reverse transcriptase‐polymerase chain reaction (qRT‐PCR) assay, using the method described by Vera Cruz et al . (2006).…”

Section: Methodsmentioning

confidence: 99%

Influence of the photoperiod on growth rate and insulin‐like growth factor‐I gene expression in Nile tilapia Oreochromis niloticus

Cruz

Brown

2009

Journal of Fish Biology

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The effects of the duration of the light phase photoperiod (8 h light or 16 h light) on the growth and hepatic insulin-like growth factor-I (IGF-I) gene expression in Nile tilapia Oreochromis niloticus were evaluated. There was a slight but not significant tendency for fish in the long light phase group (L(P)) to display elevated specific growth rate (G) both in mass (M) and standard length (L(S)) compared with that in the short light phase group (S(P);P = 0.057 for G(M);P = 0.055 for G(L)). Significantly, higher food conversion efficiency was observed in the L(P) than in the S(P). There were significant positive correlations between IGF-I concentrations and G, both in M and L(S). A significantly negative correlation was observed between IGF-I mRNA level and eye colour pattern. The lack of significant differences in G and hepatic IGF-I gene expression, despite the significant difference in feed conversion efficiency, may be related partly to the development of different levels of social interactions in the different groups within a photoperiod regime leading to increased variation of results within each group. These findings suggest that hepatic IGF-I gene expression has potential utility as a growth rate indicator for this species of fish and social status, as quantified by eye colour pattern, appears to be a much stronger determinant of growth rate and IGF-I transcript level than does light phase photoperiod length.

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“…The strong association between IGF1 and growth in bony fish has led to the application of IGF1 mRNA as a molecular marker of growth under a variety of environmental manipulations (Vera Cruz et al 2006;Montserrat et al 2007;Vera Cruz and Brown, 2009;Reinecke 2010;Picha et al 2014). However, it has been demonstrated that nuclear receptors also modulate the expression of IGF1 following activation by steroid hormones (Riley et al 2004;Johns et al, 2011;Norbeck and Sheridan 2011;Cleveland and Weber 2015).…”

Section: Biological Response Of Larvae To An Episodic Exposurementioning

confidence: 99%

Compensatory response of fathead minnow larvae following a pulsed in-situ exposure to a seasonal agricultural runoff event

Ali

Sangster

Snow

et al. 2017

Science of The Total Environment

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Bartelt-Hunt, Shannon L.; and Kolok, Alan S., "Compensatory response of fathead minnow larvae following a pulsed in-situ exposure to a seasonal agricultural runoff event" (2017 H I G H L I G H T S• Fathead minnow larvae were maintained at the Elkhorn River Research Station for an in-situ exposure to a seasonally-occurring runoff.• There was a 1.5-to 13-fold change in waterborne agrichemical contaminants including atrazine, acetochlor and metolachlor.• Peaks in sediment contamination by agrichemicals was discordant with those of waterborne contaminants.• Minnow larvae demonstrated compensation following reduction in size and androgenic gene expression by agrichemical exposure. Agriculturally-dominated waterways such as those found throughout the Midwestern United States often experience seasonal pulses of agrichemical contaminants which pose a potential hazard to aquatic organisms at varying life stages. The objective of this study was to characterize the developmental plasticity of fathead minnow larvae in a natural environment subject to a seasonal episodic perturbation in the form of a complex mixture of agricultural stressors. Fathead minnow larvae were maintained at the Elkhorn River Research Station for a 28-d in situ exposure to an agrichemical pulse event. Minnow larvae were sampled after 14 and 28 days to characterize developmental plasticity through growth measures and relative gene expression. Concentrations of agrichemical contaminants measured in water using polar organic chemical integrative samplers and composite sediment samples throughout the 28-d exposure were quantified using gas chromatography-mass spectrometry. Elevated concentrations of acetochlor, atrazine, and metolachlor were indicative of inputs from agricultural sources and were associated with reductions in body mass, condition factor, and androgenic gene expression in river exposed fathead minnow larvae. However, following a 14-d in situ depuration during the post-pulse period, river exposed larvae overcompensated in previously suppressed biological endpoints. These results indicate that fathead minnow larvae are capable of compensatory responses following episodic exposure to agrichemical stressors. G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f o

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Insulin-like growth factor-I cDNA cloning, gene expression and potential use as a growth rate indicator in Nile tilapia, Oreochromis niloticus

Cited by 103 publications

References 35 publications

Effects of dietary arginine levels and carbohydrate-to-lipid ratios on mRNA expression of growth-related hormones in largemouth bass, Micropterus salmoides

Effects of dietary arginine levels and carbohydrate-to-lipid ratios on mRNA expression of growth-related hormones in largemouth bass, Micropterus salmoides

Influence of the photoperiod on growth rate and insulin‐like growth factor‐I gene expression in Nile tilapia Oreochromis niloticus

Compensatory response of fathead minnow larvae following a pulsed in-situ exposure to a seasonal agricultural runoff event

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