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Presa LS, Copatti CE, Pinto DSB, Monserrat JM, Garcia L. Can photoperiod improve growth performance and antioxidant responses of pacu (Piaractus mesopotamicus) reared in recirculation aquaculture systems? J Comp Physiol B 2024:10.1007/s00360-024-01574-0. [PMID: 38958740 DOI: 10.1007/s00360-024-01574-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/06/2024] [Accepted: 06/18/2024] [Indexed: 07/04/2024]
Abstract
The present study investigated the best photoperiod for culturing pacu (Piaractus mesopotamicus) in recirculation aquaculture systems (RAS) based on its growth performance and hematological and oxidative stress responses. Juveniles (∼ 5 g) were subjected to five treatments (in triplicate): 24 L (light):0D (dark), 15 L: 09D, 12 L:12D, 9 L:15D, and 0 L:24D for 45 days. A total of 225 pacu individuals were randomly distributed among 15 tanks of 210 L (n = 15 per tank). Zootechnical, hematological (glucose, lactate, hematocrit, and hemoglobin), and antioxidant and oxidative stress parameters (glutathione S-transferase (GST), total antioxidant capacity against peroxyl radicals (ACAP), and lipid peroxidation (LPO) were analyzed. The zootechnical parameters (e.g., weight gain, Fulton's condition factor, and specific growth rate) were better and worse with 9 L:15D and 24 L:0D photoperiods, respectively. The hepatosomatic index was higher and lower in the 0 L:24D and 9 L:15D photoperiods. Blood lactate levels and antioxidant and oxidative stress responses were increased in the longest photoperiods (15 L:9D and 24 L:0D). In contrast, the treatments that showed lower oxidative damage (liver, gills, brain, and muscle) were 9 L:15D and 12 L:12D. In conclusion, manipulating artificial light is one way to improve fish growth and health, where the best photoperiod for pacu farming in RAS is 9 L:15D.
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Affiliation(s)
- Liliane Soares Presa
- Laboratório de Aquacultura Continental, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, 96203-900, RS, Brazil
- Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | | | - Daniel Sá Britto Pinto
- Laboratório de Aquacultura Continental, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, 96203-900, RS, Brazil
- Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - José Maria Monserrat
- Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
- Laboratório de Bioquímica Funcional de Organismos Aquáticos (BIFOA), Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
- Instituto de Ciências Biológicas (ICB), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Luciano Garcia
- Laboratório de Aquacultura Continental, Instituto de Oceanografia, Universidade Federal do Rio Grande - FURG, Rio Grande, 96203-900, RS, Brazil.
- Programa de Pós-graduação em Aquicultura, Instituto de Oceanografia (IO), Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil.
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2
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do Espírito Santo AH, López-Olmeda JF, de Alba G, Costa LS, de Oliveira Guilherme H, Sánchez-Vázquez FJ, Luz RK, Ribeiro PAP. Ontogeny of daily rhythms in the expression of metabolic factors in Nile tilapia (Oreochromis niloticus) kept at two different temperature regimes: Thermocycle and constant temperature. Comp Biochem Physiol A Mol Integr Physiol 2024; 296:111687. [PMID: 38944269 DOI: 10.1016/j.cbpa.2024.111687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 07/01/2024]
Abstract
The daily variations of temperature are one of the main synchronizers of the circadian rhythms. In addition, water temperature influences the embryonic and larval development of fish and directly affects their metabolic processes. The application of thermocycles to fish larvae has been reported to improve growth and the maturation of the digestive system, but their effects on metabolism are poorly understood. The aim of the present study was to evaluate the effect of two different temperature regimes, cycling versus constant, on the daily rhythms of metabolic factors of Nile tilapia (Oreochromis niloticus) larvae. For this purpose, fertilized eggs were divided into two groups: one reared in a 31 °C:25 °C day:night thermocycle (TCY) and another group maintained in a constant 28 °C temperature (CTE). The photoperiod was set to a 12:12 h light/dark cycle. Samples were collected every 4 h during a 24-h cycle on days 4, 8 and 13 post fertilization (dpf). The expression levels of alanine aminotransferase (alt), aspartate aminotransferase (ast), malic enzyme, glucose-6-phosphate dehydrogenase (g6pd), phosphofructokinase (pfk) and pyruvate kinase (pk) were analyzed by qPCR. Results showed that, in 13 dpf animals, most of the genes analyzed (alt, ast, malic, g6pd and pfk) showed daily rhythms in TCY, but not in the group kept at constant temperature, with most acrophases detected during the feeding period. An increase in nutrient metabolism around feeding time can improve food utilization and thus increase larval performance. Therefore, the use of thermocycles is recommended for tilapia larviculture.
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Affiliation(s)
- Amanda Hastenreiter do Espírito Santo
- Departamento de Zootecnia, Universidade Federal de Minas Gerais, Escola de Veterinária, Laboratório de Aquacultura, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | | | - Gonzalo de Alba
- Department of Physiology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - Leandro Santos Costa
- Departamento de Zootecnia, Universidade Federal Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
| | - Helder de Oliveira Guilherme
- Departamento de Zootecnia, Universidade Federal de Minas Gerais, Escola de Veterinária, Laboratório de Aquacultura, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | | | - Ronald Kennedy Luz
- Departamento de Zootecnia, Universidade Federal de Minas Gerais, Escola de Veterinária, Laboratório de Aquacultura, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Paula Adriane Perez Ribeiro
- Departamento de Zootecnia, Universidade Federal de Minas Gerais, Escola de Veterinária, Laboratório de Aquacultura, CEP 31270-901 Belo Horizonte, Minas Gerais, Brazil
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3
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Saiz N, Herrera-Castillo L, Gómez-Boronat M, Delgado MJ, Isorna E, de Pedro N. Daily rhythms of REV-ERBα and its role as transcriptional repressor of clock genes in fish hepatic oscillator. Comp Biochem Physiol A Mol Integr Physiol 2023; 283:111458. [PMID: 37290737 DOI: 10.1016/j.cbpa.2023.111458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/29/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
The REV-ERBα nuclear receptor is a key component of the molecular machinery of circadian oscillators in mammals. While the rhythmic expression of this receptor has been described in teleosts, several critical aspects of its regulation remain unknown, such as which synchronizers entrain its rhythm, and whether it can modulate the expression of other clock genes. The objective of this study was to gain deeper understanding of the role of REV-ERBα in the fish circadian system. To this end, we first investigated the cues that entrain the rhythm of rev-erbα expression in the goldfish (Carassius auratus) liver and hypothalamus. A 12-h shift in feeding time induced a parallel shift in the hepatic rhythm of rev-erbα expression, confirming that this gene is food-entrainable in the goldfish liver. In contrast, light seems the main driver of rev-erbα rhythmic expression in the hypothalamus. Next, we examined the effects of REV-ERBα activation on locomotor activity and hepatic expression of clock genes. Subchronic treatment with the REV-ERBα agonist SR9009 slightly decreased locomotor activity anticipating light onset and food arrival, and downregulated hepatic bmal1a, clock1a, cry1a, per1a and pparα expression. This generalized repressing action of REV-ERBα on the expression of hepatic clock genes was confirmed in vitro by using agonists (SR9009 and GSK4112) and antagonist (SR8278) of this receptor. Overall, the present work reveals that REV-ERBα modulates the daily expression of the main genes of the teleostean liver clock, reinforcing its role in the liver temporal homeostasis, which seems highly conserved in both fish and mammals.
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Affiliation(s)
- Nuria Saiz
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain
| | - Lisbeth Herrera-Castillo
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain
| | - Miguel Gómez-Boronat
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain
| | - María Jesús Delgado
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain
| | - Esther Isorna
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain
| | - Nuria de Pedro
- Department of Genetics, Physiology and Microbiology, Faculty of Biological Sciences, Complutense University of Madrid, Spain.
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4
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Yu W, Lu Y, Shen Y, Liu J, Gong S, Yu F, Huang Z, Zou W, Zhou M, Luo X, You W, Ke C. Exploring the Intestinal Microbiota and Metabolome Profiles Associated With Feed Efficiency in Pacific Abalone ( Haliotis discus hannai). Front Microbiol 2022; 13:852460. [PMID: 35369429 PMCID: PMC8969561 DOI: 10.3389/fmicb.2022.852460] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/07/2022] [Indexed: 12/28/2022] Open
Abstract
Feed efficiency (FE) is critical to the economic and environmental benefits of aquaculture. Both the intestines and intestinal microbiota play a key role in energy acquisition and influence FE. In the current research, intestinal microbiota, metabolome, and key digestive enzyme activities were compared between abalones with high [Residual feed intake (RFI) = -0.029] and low FE (RFI = 0.022). The FE of group A were significantly higher than these of group B. There were significant differences in intestinal microbiota structures between high- and low-FE groups, while higher microbiota diversity was observed in the high-FE group. Differences in FE were also strongly correlated to variations in intestinal digestive enzyme activity that may be caused by Pseudoalteromonas and Cobetia. In addition, Saprospira, Rhodanobacteraceae, Llumatobacteraceae, and Gaiellales may potentially be utilized as biomarkers to distinguish high- from low-FE abalones. Significantly different microorganisms (uncultured beta proteobacterium, BD1_7_clade, and Lautropia) were found to be highly correlated to significantly different metabolites [DL-methionine sulfoxide Arg-Gln, L-pyroglutamic acid, dopamine, tyramine, phosphatidyl cholines (PC) (16:0/16:0), and indoleacetic acid] in the high- and low-FE groups, and intestinal trypsin activity also significantly differed between the two groups. We propose that interactions occur among intestinal microbiota, intestinal metabolites, and enzyme activity, which improve abalone FE by enhancing amino acid metabolism, immune response, and signal transduction pathways. The present study not only elucidates mechanisms of variations in abalone FE, but it also provides important basic knowledge for improving abalone FE by modulating intestinal microbiota.
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Affiliation(s)
- Wenchao Yu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Yisha Lu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Yawei Shen
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Junyu Liu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Shihai Gong
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Feng Yu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Zekun Huang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Weiguang Zou
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Mingcan Zhou
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Xuan Luo
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Weiwei You
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
| | - Caihuan Ke
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Genetics and Breeding of Marine Organisms, Xiamen University, Xiamen, China
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5
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Malik S. Effect of time-restricted feeding on 24-h rhythm in phototactic behavior of zebrafish. BIOL RHYTHM RES 2021. [DOI: 10.1080/09291016.2019.1669941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shikha Malik
- Chronobiology and Animal Behavior Laboratory, School of Studies in Life Science, Pandit Ravishankar Shukla University, Raipur, Chhattisgarh, India
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6
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Qin C, Sun J, Wang J, Han Y, Yang H, Shi Q, Lv Y, Hu P. Discovery of differentially expressed genes in the intestines of Pelteobagrus vachellii within a light/dark cycle. Chronobiol Int 2019; 37:339-352. [PMID: 31809585 DOI: 10.1080/07420528.2019.1690498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In aquaculture, it is necessary to determine of the diurnal biological variations in the intestines to determine an appropriate feeding schedule. The present study aimed to examine the transcriptomes of the Pelteobagrus vachellii intestines at four time points (0 h, 6 h, 12 h, and 18 h) within a light/dark cycle. In comparison with the zeitgeber time 0 (ZT0) transcriptomes, we identified 37,842 unigenes with significant differential expression, including 6,638; 9,626; and 7,938 that genes upregulated, and 3,507; 4,703; and 5,412 genes that were down regulated at 4, 12, and 24 h respectively. The differentially expressed unigenes were subjected to enrichment analysis, which indicated the involvement of the major digestive pathways, including digestion of protein, lipid and carbohydrate, catabolic process (protein, carbohydrate and lipid), and circadian rhythm. We selected 73 key differentially expressed genes (DEGs) from among these pathways and identified DEGs that showed increased expression at night, including those encoding trypsin-3, chymotrypsinogen 2, amino acid transporter, maltase-glucoamylase, facilitated glucose transporter, lipase, phospholipase, fatty acid-binding protein, fatty acid synthase, long-chain fatty acid transport protein, and apolipoprotein. Moreover, DEGs involved of circadian rhythm were identified, including brain-muscle-Arnt-like 1 (BMAL1), cryptochrome-1, circadian locomoter output cycles protein kaput (CLOCK) and period circadian protein homolog 1-3. Finally, the expression levels of 12 unigenes were analyzed using quantitative real-time PCR, which were in accordance with RNA-sequencing analysis. In general, the expression of genes related to the digestion of proteins, lipids, and carbohydrates showed upregulated expression at night; however, the peak time of expression of transporters for different nutrition molecules showed more diversification within the light/dark cycle.
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Affiliation(s)
- Chuanjie Qin
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | | | - Jun Wang
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | | | - He Yang
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Qingchao Shi
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Yunyun Lv
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Peng Hu
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
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7
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Fortes-Silva R, Leme FDOP, Boaventura TP, Mendonça HCPD, Moreira JPL, Cunha PHH, Luz RK. Daily rhythms of leukocytes populations, biochemical and enzymatic blood parameters in a carnivorous freshwater catfish (Lophiosilurus alexandri). Chronobiol Int 2018; 36:276-287. [PMID: 30373409 DOI: 10.1080/07420528.2018.1537284] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aim of this study was to investigate the daily rhythms of hematological, biochemical and enzymatic parameters of the blood of a nocturnal model of fish (Lophiosilurus alexandri) bred in the laboratory (F1). Thirty-six juveniles were stocked in six tanks of a recirculation aquaculture system for 20 days. The fish were exposed to a light:dark cycle of 12:12 h and were fed 1% of biomass twice a day with commercial diet. The daily rhythms of hematological, biochemical and enzymatic parameters were then measured at six sampling times "zeitgeber time = ZT" at four-hour intervals under light:dark 12:12 h (lights on = ZT0, at 8.00 a.m). No differences were observed to alkaline phosphatase, glucose, cortisol, aspartate aminotransferase, superoxide dismutase, total protein and hematocrit (p > 0.05). However, white blood cell count, Lymphocytes (LYN), Neutrophils (NEU), Eosinophil and Neutrophils to Lymphocytes ratio were significant different between sample times (p < 0.05). Also, a significant difference in alanine transaminase was observed, with a peak of production at nighttime. In contrast, glutathione peroxidase peaked at 8:00. Uric acid, magnesium and Calcium (Ca++) showed statistically significant differences (p < 0.05). A significant difference was observed (p < 0.05), with a peak of albumin at 08:00 and triglycerides at 12:00, while cholesterol was low (p < 0.05) at 08:00 and higher from 12:00 to 04:00. Cosinor analysis revealed also rhythmicity to SOD, UA, Mg and Ca++, ALB and CHO (p < 0.05). In conclusion, the time of day must be considered a key factor when using blood parameters as biomarkers for disease, health and welfare in the L. alexandri aquaculture.
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Affiliation(s)
- Rodrigo Fortes-Silva
- a Laboratory of Feeding Behavior and Fish Nutrition (AquaUFRB), Center of Agricultural Sciences, Environmental and Biological, Campus Cruz das Almas , University of Bahia (UFRB) , Bahia , Brazil
| | | | | | | | - Jane Prado Leite Moreira
- b Laboratório de Apoio a Pesquisa-LAPEQ, Departamento de Patologia Clínica , Belo Horizonte , Brazil
| | | | - Ronald Kennedy Luz
- c Departmento de Zootecnia , Laboratório de Aquicultura , Belo Horizonte , Brazil
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8
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Han Z, Li X, Xu W, She Q, Liang S, Li X, Li Y. Melatonin concentrations in Chinese mitten crabs (Eriocheir sinesis) are affected by artificial photoperiods. BIOL RHYTHM RES 2018. [DOI: 10.1080/09291016.2018.1533725] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhibin Han
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Xin Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Weibin Xu
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Qiuxin She
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Shudong Liang
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Xiaodong Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
| | - Yingdong Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, China
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9
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Fortes-Silva R, Valle SVD, Lopéz-Olmeda JF. Daily rhythms of swimming activity, synchronization to different feeding times and effects on anesthesia practice in an Amazon fish species (Colossoma macropomum). Chronobiol Int 2018; 35:1713-1722. [PMID: 30141973 DOI: 10.1080/07420528.2018.1509078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
This study aimed to investigate the existence of day-night differences in the time for anesthesia and recovery in tambaqui exposed to the anesthetic eugenol and the influence of feeding time. Thus, we evaluated: (1) swimming activity; (2) food anticipatory activity (FAA) as a synchronizer of swimming activity and change to susceptibility to anesthetic; and (3) the effects of diurnal/nocturnal anesthesia exposure of fish feeding in the mid-light phase: 12:00 h (ML) and fish feeding in the mid-dark phase: 00:00 h (MD). Our findings revealed strictly nocturnal activity for tambaqui (94.2%), known as diurnal fish to date. Moreover, FAA was observed in tambaqui fed at MD, which showed a sustained increase in activity that began 2 h before feeding time and lasted until feeding. In contrast, no FAA was observed in fish fed at ML. Regarding anesthesia by day or night, the tambaqui treated with eugenol exhibited no difference in induction time. However, differences were observed in recovery times, with fish anesthetized at day recovering in 1-2 min and fish anesthetized at night recovering in 5-7 min. In short, our findings revealed for the first time the nocturnal behavior of tambaqui. These results indicated that recovery by day/night by eugenol in tambaqui has a strong dependence of behavioral patterns and the time of day.
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Affiliation(s)
- Rodrigo Fortes-Silva
- a Laboratory of Feeding Behavior and Fish Nutrition (AquaUFRB), Faculty of Fish Engineering (NEPA), Center of Agricultural Sciences, Environmental and Biological(CCAAB) , Federal University of Bahia (UFRB) , Bahia , Brazil
| | - Silvan Vianna Do Valle
- a Laboratory of Feeding Behavior and Fish Nutrition (AquaUFRB), Faculty of Fish Engineering (NEPA), Center of Agricultural Sciences, Environmental and Biological(CCAAB) , Federal University of Bahia (UFRB) , Bahia , Brazil
| | - Jose Fernando Lopéz-Olmeda
- b Department of Physiology, Faculty of Biology, Regional Campus of International Excellence "Campus Mare Nostrum" , University of Murcia , Murcia , Spain
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10
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Lazado CC, Pedersen PB, Nguyen HQ, Lund I. Rhythmicity and plasticity of digestive physiology in a euryhaline teleost fish, permit (Trachinotus falcatus). Comp Biochem Physiol A Mol Integr Physiol 2017; 212:107-116. [PMID: 28760555 DOI: 10.1016/j.cbpa.2017.07.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/17/2017] [Accepted: 07/26/2017] [Indexed: 12/15/2022]
Abstract
Digestive physiology is considered to be under circadian control, but there is little evidence in teleost fish. The present study explored the rhythmicity and plasticity to feeding schedules of enzymatic digestion in a candidate aquaculture fish, the permit (Trachinotus falcatus). The first experiment identified the rhythms of digestive factors throughout the light-dark (LD) cycle. Gastric luminal pH and pepsin activity showed significant daily variation albeit not rhythmic. These dynamic changes were likewise observed in several digestive enzymes, in which the activities of intestinal protease, chymotrypsin and lipase exhibited significant daily rhythms. In the second experiment, the existence of feed anticipatory activity in the digestive factors was investigated by subjecting the fish to either periodic or random feeding. Anticipatory gastric acidification prior to feeding was identified in periodically fed fish. However, pepsin activity did not exhibit such anticipation but a substantial postprandial increase was observed. Intestinal protease, leucine aminopeptidase and lipase anticipated periodic mealtime with elevated enzymatic activities. Plasma melatonin and cortisol demonstrated robust daily rhythms but feeding time manipulations revealed no significant impact. Plasma ghrelin level remained constant during the LD cycle and appeared to be unaffected by differing feeding regimes as well. Taken together, the digestive factors of permit were highly dynamic during the LD cycle. Periodic feeding entrained digestive physiology and mediated anticipatory gastric acidification and intestinal enzymatic activities. This knowledge will be essential in developing feeding protocols and husbandry-related welfare strategies that will further advance this candidate finfish as an aquaculture species.
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Affiliation(s)
- Carlo C Lazado
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, DK-9850 Hirtshals, Denmark; Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås, Norway.
| | - Per Bovbjerg Pedersen
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, DK-9850 Hirtshals, Denmark
| | - Huy Quang Nguyen
- Research Institute for Aquaculture No.1 (RIA1), Ministry of Agriculture and Rural Development, Dinh Bang - Tu Son - Bac Ninh, Viet Nam
| | - Ivar Lund
- Technical University of Denmark, DTU Aqua, Section for Aquaculture, The North Sea Research Centre, DK-9850 Hirtshals, Denmark
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