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| DOI | 10.1016/j.aqrep.2024.101954 |
| Temperature induced biological alterations in the major carp, Rohu (Labeo rohita): Assessing potential effects of climate change on aquaculture production | |
| 发表日期 | 2024 |
| ISSN | 2352-5134 |
| 起始页码 | 35 |
| 卷号 | 35 |
| 英文摘要 | Temperature plays a profound role in organismal growth, immunity, survival, and the entire biological systems of any aquatic species. Suboptimal temperature changes modify different biological traits of fish that adversely affect their life cycle and aquaculture productivity. The freshwater Indian major carp, Rohu (Labeo rohita), is one of the most important aquaculture species across the Indian Sub-continent, with the optimum temperature range of 28 degrees C to 32 degrees C. This study tested the effects of five different temperature levels (28 degrees C, 30 degrees C, 32 degrees C, 33 degrees C and 34 degrees C) on selected physiological and biochemical traits, and also on the expression of five targeted genes of L. rohita. Experimental temperatures significantly affected growth performance (mean body weight) (p < 0.05), with the highest growth and survival observed at 30 degrees C. The lowest level of growth and survival were obtained at 34 degrees C, possibly due to thermal stress, despite the highest O-2 consumption rate and total blood cell counts found at this temperature. A significantly lower growth (P < 0.05) was observed at 28 degrees C (control) compared to 30 degrees C. The five target genes including growth hormone (GH) and insulin like growth factor I (IGF-I) as growth regulatory genes, glycerol-3-phosphatase (G-3-P) and Gherlin (as metabolic genes), and heat shock protein 70 (HSP70 as thermal stress response gene), showed variable expression levels with varying temperatures. The growth genes showed the highest expression at 28 degrees C and 30 degrees C, whereas the stress response gene showed the highest expression at 34 degrees C. Results of this study indicate that Rohu can perform well up to 32 degrees C without any adverse effects, with optimal production performance occurring between 28 degrees C and 30 degrees C. This further implies that appropriate measures must be in place to maintain optimum temperature in the aquaculture farms such as physically manipulating the production system to control temperature or through development of temperate tolerant strains in order to avoid potential negative consequences of climate change. |
| 英文关键词 | Labeo rohita; Thermal stress; Climate change; Freshwater aquaculture |
| 语种 | 英语 |
| WOS研究方向 | Fisheries |
| WOS类目 | Fisheries |
| WOS记录号 | WOS:001177686000001 |
| 来源期刊 | AQUACULTURE REPORTS
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/288158 |
| 作者单位 | Khulna University; Universiti Putra Malaysia; Asian Institute of Technology; Queensland University of Technology (QUT) |
| 推荐引用方式 GB/T 7714 | . Temperature induced biological alterations in the major carp, Rohu (Labeo rohita): Assessing potential effects of climate change on aquaculture production[J],2024,35. |
| APA | (2024).Temperature induced biological alterations in the major carp, Rohu (Labeo rohita): Assessing potential effects of climate change on aquaculture production.AQUACULTURE REPORTS,35. |
| MLA | "Temperature induced biological alterations in the major carp, Rohu (Labeo rohita): Assessing potential effects of climate change on aquaculture production".AQUACULTURE REPORTS 35(2024). |
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