Effects of environmental temperature on IGF1, IGF2, and IGF type I receptor expression in rainbow trout (Oncorhynchus mykiss)

Gabillard, Jean-Charles; Weil, Claudine; Rescan, Pierre‐Yves; Navarro, Isabel; Gutiérrez, Joaquím; Bail, Pierre‐Yves Le

doi:10.1016/s0016-6480(03)00167-9

Cited by 121 publications

(80 citation statements)

References 37 publications

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“…The plasticity of IGF-1 in response to a variety of environmental stimuli, including nutrition, temperature, and stress, has been particularly well documented in laboratory fish, birds, and mammals (e.g., Duan and Plisetskaya 1993, Schmidt and Kelley 2001, Gabillard et al 2003, suggesting that studies situated in a natural ecological context are of great interest. However, IGF-1 activity in wild populations has been largely unexplored (but see Crain et al 1995a, Guillette et al 1996, Webster et al 1996.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary ecology of endocrine‐mediated life‐history variation in the garter snake Thamnophis elegans

Sparkman

Vleck

Bronikowski

2009

Ecology

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The endocrine system plays an integral role in the regulation of key life-history traits. Insulin-like growth factor-1 (IGF-1) is a hormone that promotes growth and reproduction, and it has been implicated in the reduction of lifespan. IGF-1 is also capable of responding plastically to environmental stimuli such as resource availability and temperature. Thus pleiotropic control of life-history traits by IGF-1 could provide a mechanism for the evolution of correlated life-history traits in a new or changing environment. An ideal system in which to investigate the role of IGF-1 in life-history evolution exists in two ecotypes of the garter snake Thamnophis elegans, which derive from a single recent ancestral source but have evolved genetically divergent life-history characteristics. Snakes from meadow populations near Eagle Lake, California (USA) exhibit slower growth rates, lower annual reproductive output, and longer median adult lifespans relative to populations along the lakeshore. We hypothesized that the IGF-1 system has differentiated between these ecotypes and can account for increased growth and reproduction and reduced survival in lakeshore vs. meadow snakes. We tested for a difference in plasma IGF-1 levels in free-ranging snakes from replicate populations of each ecotype over three years. IGF-1 levels were significantly associated with adult body size, reproductive output, and season in a manner that reflects established differences in prey ecology and age/sizespecific reproduction between the ecotypes. These findings are discussed in the context of theoretical expectations for a trade-off between reproduction and lifespan that is mediated by pleiotropic endocrine mechanisms. KeywordsEagle Lake, California, USA, garter snake, hormonal plasticity, IGF-1, insulin-like growth factor-1, life-history evolution, trade-offs, Thamnophis elegans Abstract. The endocrine system plays an integral role in the regulation of key life-history traits. Insulin-like growth factor-1 (IGF-1) is a hormone that promotes growth and reproduction, and it has been implicated in the reduction of lifespan. IGF-1 is also capable of responding plastically to environmental stimuli such as resource availability and temperature. Thus pleiotropic control of life-history traits by IGF-1 could provide a mechanism for the evolution of correlated life-history traits in a new or changing environment. An ideal system in which to investigate the role of IGF-1 in life-history evolution exists in two ecotypes of the garter snake Thamnophis elegans, which derive from a single recent ancestral source but have evolved genetically divergent life-history characteristics. Snakes from meadow populations near Eagle Lake, California (USA) exhibit slower growth rates, lower annual reproductive output, and longer median adult lifespans relative to populations along the lakeshore. We hypothesized that the IGF-1 system has differentiated between these ecotypes and can account for increased growth and reproduction and reduced survival in lakeshore vs....

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Section: Discussionmentioning

confidence: 99%

Evolutionary ecology of endocrine‐mediated life‐history variation in the garter snake Thamnophis elegans

Sparkman

Vleck

Bronikowski

2009

Ecology

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“…In mammals, IGF-II mRNA decreased during postnatal development (Daughaday and Rotwein, 1989). In contrast, IGF-II mRNA was reported at higher levels than IGF-1 mRNA in several tissues of adult fish, including muscle and liver (Gabillard et al, 2003;Peterson et al, 2004).…”

Section: Common Mechanisms Of Vertebrate Myogenesis?mentioning

confidence: 92%

Environment and plasticity of myogenesis in teleost fish

Johnston

2006

Journal of Experimental Biology

317

276

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Embryonic development in teleosts is profoundly affected by environmental conditions, particularly temperature and dissolved oxygen concentrations. The environment determines the rate of myogenesis, the composition of sub-cellular organelles, patterns of gene expression, and the number and size distribution of muscle fibres. During the embryonic and larval stages, muscle plasticity to the environment is usually irreversible due to the rapid pace of ontogenetic change. In the early life stages, muscle can affect locomotory performance and behaviour, with potential consequences for larval survival. Postembryonic growth involves myogenic progenitor cells (MPCs) that originate in the embryo. The embryonic temperature regime can have long-term consequences for the growth of skeletal muscle in some species, including the duration and intensity of myotube formation in adult stages. In juvenile and adult fish, abiotic (temperature, day-length, water flow characteristics, hypoxia) and biotic factors (food availability, parasitic infection) have complex effects on the signalling pathways regulating the proliferation and differentiation of MPCs, protein synthesis and degradation, and patterns of gene expression. The phenotypic responses observed to the environment frequently vary during ontogeny and are integrated with endogenous physiological rhythms, particularly sexual maturation. Studies with model teleosts provide opportunities for investigating the underlying genetic mechanisms of muscle plasticity that can subsequently be applied to non-model species of more ecological or commercial interest.

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“…mykiss) through the increased release of growth hormone and subsequent stimulation of IGF1 (Gabillard et al 2003). 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).…”

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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Effects of environmental temperature on IGF1, IGF2, and IGF type I receptor expression in rainbow trout (Oncorhynchus mykiss)

Cited by 121 publications

References 37 publications

Evolutionary ecology of endocrine‐mediated life‐history variation in the garter snake Thamnophis elegans

Evolutionary ecology of endocrine‐mediated life‐history variation in the garter snake Thamnophis elegans

Environment and plasticity of myogenesis in teleost fish

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

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