Higher acclimation temperature affects growth of rohu (Labeo rohita) through suppression of GH and IGFs genes expression actuating stress response

Shahjahan, Md; Zahangir, Md. Mahiuddin; Islam, SM Majharul; Ashaf-Ud-Doulah, Mohammad; Ando, Hironori

doi:10.1016/j.jtherbio.2021.103032

Cited by 16 publications

(10 citation statements)

References 63 publications

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“…In this stage, the water temperature was 34 ± 2°C, which exceeds the suitable water temperatures (26–32°C) for tilapia growth (Sun & Zhang, 1982). High temperature could affect growth through the suppression of GH and IGF gene expression causing stress response (Shahjahan et al, 2021). At this point, compared to the high dietary protein groups, low dietary protein (26.45%) promoted growth through activating the IGF‐1, which was supported by the findings of Cruz and Brown (2011) that there is a significant positive correlation between IGF‐1 mRNA levels and growth in tilapia.…”

Section: Discussionmentioning

confidence: 99%

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The optimum dietary protein requirement of the genetically improved farmed tilapia ( GIFT : Oreochromis niloticus ): Effects on growth performance and protein metabolism via GH‐IGF axis and TOR signalling pathway at different seasonal growth stages

Huang

Liang

Ren

et al. 2022

Aquaculture Research

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Four experimental trials were conducted to explore the optimal dietary protein requirement level for the genetically improved farmed tilapia (GIFT) at different seasonal growth stages. Six practical diets were prepared with graded protein levels (26.45%, 29.28%, 31.69%, 33.68%, 36.18% and 38.75%, dry basis). In Stage 1 (initial weight 3.00 g), the results showed that the optimal growth performance was observed in the 33.68% dietary protein group. Correspondingly, compared with the lowest (26.45%) or highest (38.75%) dietary protein groups, 33.68% dietary protein significantly upregulated the GH‐IGF axis‐related genes (GH, GHR1, GHR2 and IGF‐1) and TOR signalling pathway‐related genes (TOR, S6K1 and 4EBP1). In Stage 2 (initial weight 43.78 g), 26.45% dietary protein contributed to the optimum growth performance. Besides, the expression levels of GH, GHR2 and IGF‐1 and TOR signalling pathway (S6K1 and 4EBP1) decreased with the increasing dietary protein levels, and the maximum values were observed in the 26.45% dietary protein group. In Stage 3 (initial weight 99.97 g), the best growth performance was found in the 31.69% dietary protein group. In addition, the mRNA expression levels of GH, IGF1, S6K1 and 4EBP1 increased with the increase in dietary protein levels up to 31.69%, then gradually declined. In Stage 4 (initial weight 302.82 g), dietary protein levels did not affect the growth performance. Based on the quadratic regression analysis of the SGR, the optimal dietary protein level of each stage was estimated to be 33.08% (Spring, Stage 1), 26.45% (Summer, Stage 2), 33.06% (Autumn, Stage 3) and 26.45% (Winter, Stage 4) of dry diet.

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Section: Discussionmentioning

confidence: 99%

“…In this stage, the water temperature was 34 ± 2°C, which exceeds the suitable water temperatures (26-32°C) for tilapia growth (Sun & Zhang, 1982). High temperature could affect growth through the suppression of GH and IGF gene expression causing stress response (Shahjahan et al, 2021).…”

Section: Effects Of Dietary Protein Levels On Wholebody Composition G...mentioning

confidence: 99%

The optimum dietary protein requirement of the genetically improved farmed tilapia ( GIFT : Oreochromis niloticus ): Effects on growth performance and protein metabolism via GH‐IGF axis and TOR signalling pathway at different seasonal growth stages

Huang

Liang

Ren

et al. 2022

Aquaculture Research

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“…Thyroid hormones have important roles in growth and development (reviewed by Deal and Volkoff 2020), however, it is curious that TRα and TRβ were downregulated given we showed previously that warm-acclimated lake trout grew larger than the cold-acclimated group (Penney et al 2021). Indicators of growth, measured as expression of GH and IGF-1 , increased in Labeo rohita at slightly warmer acclimation temperatures but was suppressed at higher acclimation temperatures (Shahjahan et al 2021). We collected liver samples at each fish’s CTMax, so it is possible that fish were responding to the stress of the acute temperature increase and may have suppressed growth at this point in favour of a heat stress response.…”

Section: Discussionmentioning

confidence: 99%

Transcriptomic responses to multigenerational environmental warming in a cold-adapted salmonid

Penney

Burness

Wilson

2022

Preprint

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Cold-adapted species are particularly threatened by climate change as rates of environmental warming outpace the ability of many populations adapt. Recent evidence suggest that transgenerational thermal plasticity may play a role in the response of cold-adapted organisms to long-term changes in temperature. Using RNA sequencing, we explored differential gene expression of lake trout (Salvelinus namaycush), a cold-adapted species, to examine the molecular processes that respond to elevated temperatures under conditions of within-generation (offspring) and transgenerational (parental) warm-acclimation. We hypothesized that genes associated with metabolism, growth and thermal stress/tolerance would be differentially expressed in juvenile lake trout offspring depending on their own acclimation temperature and that of their parents. We found enriched pathways for thermal stress, signaling processes, immune function, and transcription regulation, although the specific genes and direction of differential expression (up- or downregulation) depended on the combination of offspring and parental thermal rearing conditions. While parental warm-acclimation did have a transgenerational effect on gene expression in their offspring, within-generation warm-acclimation had a larger effect on differential expression, enriching more pathways. We provide evidence of the transgenerational response to warming at the transcriptional level in lake trout, which should be useful for future studies of transcriptomics and plasticity in these and other cold-adapted species.

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“…Consequently, it is crucial to comprehend the interactions between water temperatures and the nutritional requirements of cultured fish species to boost production. Many studies have been conducted to evaluate the effect of different temperatures and protein levels separately on the growth performance and physiology of Labeo rohita (Afzal Khan et al, 2005; Das et al, 2005; Kausar & Salim, 2006; Satpathy et al, 2003; Shahjahan et al, 2021). Previously, a few studies have been conducted on the interactive effect of temperature and protein levels in diets of different fish species (Cai et al, 2020; Teles et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Interactive effects of temperature and protein levels on the growth performance, proximate composition, digestive enzyme activity and serum biochemistry of Labeo rohita

Tahir,

Fatima,

Shah

et al. 2023

Animal Physiology Nutrition

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The current study was performed to investigate the impact of different temperatures and protein levels on the growth performance, proximate composition and digestive and hepatic enzyme activities of Labeo rohita fingerlings. For this purpose, healthy fingerlings (average initial weight of 6.40 ± 0.02 g) were acclimatized for 15 days, then reared at three temperatures (25°C, 30°C and 35°C) and fed three levels of crude protein (25%, 30% and 35% crude protein (CP)) twice daily until satiation for 60 days. The results of the study revealed that the highest growth performance was observed in fish fed 35% protein and reared at 30°C. Similarly, fish reared at 35°C and 25°C water temperature showed comparatively better growth performance in fish fed with 35% protein. Furthermore, a significant enhancement in feed intake was observed with increasing culture temperature and increasing CP levels, but at 25°C, increasing CP levels significantly decreased the feed intake. Sligh variations were also observed in proximate composition in terms of moisture, CP, crude fat (CF) and ash contents in fish fed with different CP levels and reared at different temperatures. The hepatosomatic index and viscerosomatic index decreased significantly with increasing levels of protein and temperature. Amylase activities were significantly reduced with increasing culture temperature at each protein level. Increasing culture temperature did not affected the lipase activities. However, lipase activities were enhanced with increasing CP levels at 25°C and activities decreased with increasing CP levels at 30–35°C. Protease activity was enhanced with increasing temperature and CP levels. Significant increases were also observed in serum total proteins and liver functioning enzymes such as alkaline phosphatase, alanine aminotransferase and aspartate aminotransferase in response to increased temperature, and protein had a reciprocal effect. It is concluded that increasing the CP levels increased the growth performance independent of temperature. However, similar growth performance at 30 CP (30°C) and 35 CP (35°C) indicates that L. rohita requires more protein at higher temperature for optimum growth.

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Higher acclimation temperature affects growth of rohu (Labeo rohita) through suppression of GH and IGFs genes expression actuating stress response

Cited by 16 publications

References 63 publications

The optimum dietary protein requirement of the genetically improved farmed tilapia ( GIFT : Oreochromis niloticus ): Effects on growth performance and protein metabolism via GH‐IGF axis and TOR signalling pathway at different seasonal growth stages

The optimum dietary protein requirement of the genetically improved farmed tilapia ( GIFT : Oreochromis niloticus ): Effects on growth performance and protein metabolism via GH‐IGF axis and TOR signalling pathway at different seasonal growth stages

Transcriptomic responses to multigenerational environmental warming in a cold-adapted salmonid

Interactive effects of temperature and protein levels on the growth performance, proximate composition, digestive enzyme activity and serum biochemistry of Labeo rohita

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