1
|
MacNamara R, Mankiewicz JL, Salger SA, Stuart K, Borski RJ, Godwin J, Drawbridge M. Temperature regulates sex determination and growth in the paralichthid flatfish California halibut. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2024; 341:811-821. [PMID: 38682316 DOI: 10.1002/jez.2823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/01/2024] [Accepted: 04/09/2024] [Indexed: 05/01/2024]
Abstract
California halibut (Paralichthys californicus) is a candidate species for aquaculture and stock enhancement. These applications rely on sex control, either to maximize the production of faster growing females or to match sex ratios in the wild. Other paralichthids exhibit temperature-dependent sex determination (TSD), but the presence and pattern of TSD is not well defined in California halibut. Juvenile California halibut were cultured at three distinct temperatures (15°C, 19°C, and 23°C) through the developmental period presumed to be thermosensitive based on findings from congeners. Sex ratios were quantified in each treatment using phenotypic sex identification techniques applied early (molecular biomarkers; 51-100 mm total length [TL]) and late (visual examination of the gonads; ≥100 mm TL) in the juvenile phase. Both techniques indicated similar sex determination trends at each temperature, with overall sex ratios assessed as 49.9% male at 15°C, 74.5% male at 19°C, and 98.2% male at 23°C. Growth rates were highest at 23°C and lowest at 15°C, with intrinsically fast- and slow-growing individuals at all temperatures. At 15°C and 19°C, females comprised a higher proportion among the fast growers than they did among the slow growers. These data show that California halibut exhibit TSD, with temperatures of 19°C and 23°C masculinizing fish while 15°C appears to produce a 1:1 sex ratio. This study will help optimize sex ratios and growth in hatcheries through thermal manipulation. Furthermore, the developed biomolecular tools and identified temperature thresholds will be important in future work to understand the influence of global warming on wild population demographics.
Collapse
Affiliation(s)
| | - Jamie L Mankiewicz
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Scott A Salger
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Kevin Stuart
- Hubbs-SeaWorld Research Institute, San Diego, California, USA
| | - Russell J Borski
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - John Godwin
- Department of Biological Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Mark Drawbridge
- Hubbs-SeaWorld Research Institute, San Diego, California, USA
| |
Collapse
|
2
|
Xu S, Xie B, Liu H, Liu J, Wang M, Zhong L, Zhou J, Wen Z, Zhang L, Chen X, Zhang S. 5 mC modification of steroid hormone biosynthesis-related genes orchestrates feminization of channel catfish induced by high-temperature. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 356:124310. [PMID: 38838810 DOI: 10.1016/j.envpol.2024.124310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 06/01/2024] [Accepted: 06/03/2024] [Indexed: 06/07/2024]
Abstract
To elucidate the mechanism behind channel catfish feminization induced by high temperature, gonad samples were collected from XY pseudo-females and wild-type females and subjected to high-throughput sequencing for Whole-Genome-Bisulfite-Seq (WGBS) and transcriptome sequencing (RNA-Seq). The analysis revealed 50 differentially methylated genes between wild-type females and XY pseudo-females, identified through the analysis of KEGG pathways and GO enrichment in the promoter of the genome and differentially methylated regions (DMRs). Among these genes, multiple differential methylation sites observed within the srd5a2 gene. Repeatability tests confirmed 7 differential methylation sites in the srd5a2 gene in XY pseudo-females compared to normal males, with 1 specific differential methylation site (16608174) distinguishing XY pseudo-females from normal females. Interestingly, the expression of these genes in the transcriptome showed no difference between wild-type females and XY pseudo-females. Our study concluded that methylation of the srd5a2 gene sequence leads to decreased expression, which inhibits testosterone synthesis while promoting the synthesis of 17β-estradiol from testosterone. This underscores the significance of the srd5a2 gene in the sexual differentiation of channel catfish, as indicated by the ipu00140 KEGG pathway analysis.
Collapse
Affiliation(s)
- Siqi Xu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Fisheries, Southwest University, Chongqing 402460, China
| | - Bingjie Xie
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Hongyan Liu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Ju Liu
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China
| | - Minghua Wang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Liqiang Zhong
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Jian Zhou
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 611731, China
| | - Zhengyong Wen
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang 641100, China
| | - Lu Zhang
- Fisheries Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 611731, China
| | - Xiaohui Chen
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China; College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang 222005, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Shiyong Zhang
- National Genetic Breeding Center of Channel Catfish, Freshwater Fisheries Research Institute of Jiangsu Province, Nanjing 210027, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China; College of Marine Science and Fisheries, Jiangsu Ocean University, Lianyungang 222005, China.
| |
Collapse
|
3
|
Bókony V, Kalina C, Ujhegyi N, Mikó Z, Lefler KK, Vili N, Gál Z, Gabor CR, Hoffmann OI. Does stress make males? An experiment on the role of glucocorticoids in anuran sex reversal. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2024; 341:172-181. [PMID: 38155497 DOI: 10.1002/jez.2772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 12/30/2023]
Abstract
Environmentally sensitive sex determination may help organisms adapt to environmental change but also makes them vulnerable to anthropogenic stressors, with diverse consequences for population dynamics and evolution. The mechanisms translating environmental stimuli to sex are controversial: although several fish experiments supported the mediator role of glucocorticoid hormones, results on some reptiles challenged it. We tested this hypothesis in amphibians by investigating the effect of corticosterone on sex determination in agile frogs (Rana dalmatina). This species is liable to environmental sex reversal whereby genetic females develop into phenotypic males. After exposing tadpoles during sex determination to waterborne corticosterone, the proportion of genetic females with testes or ovotestes increased from 11% to up to 32% at 3 out of 4 concentrations. These differences were not statistically significant except for the group treated with 10 nM corticosterone, and there was no monotonous dose-effect relationship. These findings suggest that corticosterone is unlikely to mediate sex reversal in frogs. Unexpectedly, animals originating from urban habitats had higher sex-reversal and corticosterone-release rates, reduced body mass and development speed, and lower survival compared to individuals collected from woodland habitats. Thus, anthropogenic environments may affect both sex and fitness, and the underlying mechanisms may vary across ectothermic vertebrates.
Collapse
Affiliation(s)
- Veronika Bókony
- Department of Evolutionary Ecology, Plant Protection Institute, HUN-REN Centre for Agricultural Research, Budapest, Hungary
- Department of Zoology, University of Veterinary Medicine Budapest, Budapest, Hungary
| | - Csenge Kalina
- Department of Zoology, University of Veterinary Medicine Budapest, Budapest, Hungary
| | - Nikolett Ujhegyi
- Department of Evolutionary Ecology, Plant Protection Institute, HUN-REN Centre for Agricultural Research, Budapest, Hungary
| | - Zsanett Mikó
- Department of Evolutionary Ecology, Plant Protection Institute, HUN-REN Centre for Agricultural Research, Budapest, Hungary
| | - Kinga Katalin Lefler
- Department of Aquaculture, Institute of Agricultural and Environmental Safety, Hungarian University of Agriculture and Life Science, Gödöllő, Hungary
| | - Nóra Vili
- Department of Zoology, University of Veterinary Medicine Budapest, Budapest, Hungary
| | - Zoltán Gál
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Science, Gödöllő, Hungary
| | - Caitlin R Gabor
- Department of Biology, Texas State University, San Marcos, Texas, USA
| | - Orsolya Ivett Hoffmann
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Science, Gödöllő, Hungary
| |
Collapse
|
4
|
Liu Y, Bai S, Li X, Jin C, Wang Z, Zhai J, Li W, Li H, Liu J, Zhang Q. Chronic low salinity stress rescued masculinization effect in farmed Cynoglossus semilaevis population. MARINE POLLUTION BULLETIN 2024; 200:116074. [PMID: 38290369 DOI: 10.1016/j.marpolbul.2024.116074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/01/2024]
Abstract
Salinity, being an indispensable abiotic factor crucial for the survival of marine organisms, has demonstrated diverse alterations globally in response to the current trend of global warming. In this study, the effect of chronic low salinity stress on teleosts' sex differentiation was investigated using Cynoglossus semilaevis, an economically important fish with both genetic and environmental sex determination system. The cultivation experiment was conducted employing artificially simulated seawater of 20 ppt and ambient sea water of 30 ppt to rear juveniles C. semilaevis. Throughout the experiment, the growth performance was assessed and the histology of gonadal development was examined, a significantly lower masculinization rate was observed in LS group. To gain further insights, transcriptome analysis was conducted using raw reads obtained from 53 libraries derived from gonads of 55 days post fertilization (dpf) and 100 dpf juveniles in both LS and CT groups. GO/KEGG enrichment were further proceeded, Terms and pathways involved in reproduction ability, germ cell proliferation, immune function, steroid metabolism etc., were illuminated and a possible crosstalk between HPI and HPG axis was proposed. WGCNA was conducted and two hub genes, hspb8-like and Histone H2A.V were exhibited to be of great significance in the changes of masculinization rate. Our findings provided solid reference for sex differentiation study of GSD + ESD species in a constantly changing ocean environment, as well as practice guiding significance for the environmental management for the culture of C. semilaevis.
Collapse
Affiliation(s)
- Yuxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - Shujun Bai
- Laboratory of Fisheries Oceanography, College of Fisheries, Ocean University of China, Qingdao, China
| | - Xiaoqi Li
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - Chaofan Jin
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - Zhigang Wang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China
| | - Jieming Zhai
- Laizhou Mingbo Aquatic Co., Ltd., Laizhou, China
| | - Wensheng Li
- Laizhou Mingbo Aquatic Co., Ltd., Laizhou, China
| | - Hengde Li
- Key Laboratory of Aquatic Genomics, Ministry of Agriculture and Rural Affairs, Beijing Key Laboratory of Fishery Biotechnology, Chinese Academy of Fishery Sciences, Beijing 100141, China
| | - Jinxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Hainan Yazhou Bay Seed Laboratory, Sanya, China.
| | - Quanqi Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering, Sanya Oceanographic Institution, Ocean University of China, Sanya, China.
| |
Collapse
|
5
|
Fagbémi MNA, Nivelle R, Muller M, Mélard C, Lalèyè P, Rougeot C. Effect of high temperatures on sex ratio and differential expression analysis (RNA-seq) of sex-determining genes in Oreochromis niloticus from different river basins in Benin. ENVIRONMENTAL EPIGENETICS 2024; 9:dvad009. [PMID: 38487307 PMCID: PMC10939319 DOI: 10.1093/eep/dvad009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/09/2023] [Accepted: 01/10/2024] [Indexed: 03/17/2024]
Abstract
The high temperature sex reversal process leading to functional phenotypic masculinization during development has been widely described in Nile tilapia (Oreochromis n iloticus) under laboratory or aquaculture conditions and in the wild. In this study, we selected five wild populations of O. niloticus from different river basins in Benin and produced twenty full-sib families of mixed-sex (XY and XX) by natural reproduction. Progenies were exposed to room temperature or high (36.5°C) temperatures between 10 and 30 days post-fertilization (dpf). In control groups, we observed sex ratios from 40% to 60% males as expected, except for 3 families from the Gobé region which showed a bias towards males. High temperature treatment significantly increased male rates in each family up to 88%. Transcriptome analysis was performed by RNA-sequencing (RNA-seq) on brains and gonads from control and treated batches of six families at 15 dpf and 40 dpf. Analysis of differentially expressed genes, differentially spliced genes, and correlations with sex reversal was performed. In 40 dpf gonads, genes involved in sex determination such as dmrt1, cyp11c1, amh, cyp19a1b, ara, and dax1 were upregulated. In 15 dpf brains, a negative correlation was found between the expression of cyp19a1b and the reversal rate, while at 40 dpf a negative correlation was found between the expression of foxl2, cyp11c1, and sf1 and positive correlation was found between dmrt1 expression and reversal rate. Ontology analysis of the genes affected by high temperatures revealed that male sex differentiation processes, primary male sexual characteristics, autophagy, and cilium organization were affected. Based on these results, we conclude that sex reversal by high temperature treatment leads to similar modifications of the transcriptomes in the gonads and brains in offspring of different natural populations of Nile tilapia, which thus may activate a common cascade of reactions inducing sex reversal in progenies.
Collapse
Affiliation(s)
- Mohammed Nambyl A Fagbémi
- Aquaculture Research and Education Centre (CEFRA), Liège University, query author on which is prefered, 10 Chemin de la Justice B-4500, Tihange, Belgium
- Laboratory of Hydrobiology and Aquaculture (LHA), Faculty of Agricultural Sciences, University of Abomey-Calavi, 01 BP: 526, Cotonou, Benin
| | - Renaud Nivelle
- Aquaculture Research and Education Centre (CEFRA), Liège University, query author on which is prefered, 10 Chemin de la Justice B-4500, Tihange, Belgium
- Laboratory for Organogenesis and Regeneration (LOR), Interdisciplinary Research Institute in Biomedical Sciences (GIGA-I3), Liège University, Sart Tilman, Liège, Belgium
| | - Marc Muller
- Laboratory for Organogenesis and Regeneration (LOR), Interdisciplinary Research Institute in Biomedical Sciences (GIGA-I3), Liège University, Sart Tilman, Liège, Belgium
| | - Charles Mélard
- Aquaculture Research and Education Centre (CEFRA), Liège University, query author on which is prefered, 10 Chemin de la Justice B-4500, Tihange, Belgium
| | - Philippe Lalèyè
- Laboratory of Hydrobiology and Aquaculture (LHA), Faculty of Agricultural Sciences, University of Abomey-Calavi, 01 BP: 526, Cotonou, Benin
| | - Carole Rougeot
- Aquaculture Research and Education Centre (CEFRA), Liège University, query author on which is prefered, 10 Chemin de la Justice B-4500, Tihange, Belgium
| |
Collapse
|
6
|
Wang Y, Su C, Liu Q, Hao X, Han S, Doretto LB, Rosa IF, Yang Y, Shao C, Wang Q. Transcriptome Analysis Revealed the Early Heat Stress Response in the Brain of Chinese Tongue Sole ( Cynoglossus semilaevis). Animals (Basel) 2023; 14:84. [PMID: 38200815 PMCID: PMC10777917 DOI: 10.3390/ani14010084] [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: 10/05/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 01/12/2024] Open
Abstract
As a common influencing factor in the environment, temperature greatly influences the fish that live in the water all their life. The essential economic fish Chinese tongue sole (Cynoglossus semilaevis), a benthic fish, will experience both physiological and behavioral changes due to increases in temperature. The brain, as the central hub of fish and a crucial regulatory organ, is particularly sensitive to temperature changes and will be affected. However, previous research has mainly concentrated on the impact of temperature on the gonads of C. semilaevis. Instead, our study examines the brain using transcriptomics to investigate specific genes and pathways that can quickly respond to temperature changes. The fish were subjected to various periods of heat stress (1 h, 2 h, 3 h, and 5 h) before extracting the brain for transcriptome analysis. After conducting transcriptomic analyses, we identified distinct genes and pathways in males and females. The pathways were mainly related to cortisol synthesis and secretion, neuroactive ligand-receptor interactions, TGF beta signaling pathway, and JAK/STAT signaling pathway, while the genes included the HSP family, tshr, c-fos, c-jun, cxcr4, camk2b, and igf2. Our study offers valuable insights into the regulation mechanisms of the brain's response to temperature stress.
Collapse
Affiliation(s)
- Yue Wang
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin 300384, China; (Y.W.); (Y.Y.)
| | - Chengcheng Su
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Qian Liu
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Xiancai Hao
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Shenglei Han
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Lucas B. Doretto
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
| | - Ivana F. Rosa
- Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 01049-010, Brazil;
| | - Yanjing Yang
- Tianjin Key Laboratory of Aqua-Ecology and Aquaculture, Fisheries College, Tianjin Agricultural University, Tianjin 300384, China; (Y.W.); (Y.Y.)
| | - Changwei Shao
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
| | - Qian Wang
- National Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; (C.S.); (Q.L.); (X.H.); (S.H.); (L.B.D.); (C.S.)
- Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
| |
Collapse
|
7
|
Yu Y, Chen M, Shen ZG. Molecular biological, physiological, cytological, and epigenetic mechanisms of environmental sex differentiation in teleosts: A systematic review. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 267:115654. [PMID: 37918334 DOI: 10.1016/j.ecoenv.2023.115654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/26/2023] [Accepted: 10/29/2023] [Indexed: 11/04/2023]
Abstract
Human activities have been exerting widespread stress and environmental risks in aquatic ecosystems. Environmental stress, including temperature rise, acidification, hypoxia, light pollution, and crowding, had a considerable negative impact on the life histology of aquatic animals, especially on sex differentiation (SDi) and the resulting sex ratios. Understanding how the sex of fish responds to stressful environments is of great importance for understanding the origin and maintenance of sex, the dynamics of the natural population in the changing world, and the precise application of sex control in aquaculture. This review conducted an exhaustive search of the available literature on the influence of environmental stress (ES) on SDi. Evidence has shown that all types of ES can affect SDi and universally result in an increase in males or masculinization, which has been reported in 100 fish species and 121 cases. Then, this comprehensive review aimed to summarize the molecular biology, physiology, cytology, and epigenetic mechanisms through which ES contributes to male development or masculinization. The relationship between ES and fish SDi from multiple aspects was analyzed, and it was found that environmental sex differentiation (ESDi) is the result of the combined effects of genetic and epigenetic factors, self-physiological regulation, and response to environmental signals, which involves a sophisticated network of various hormones and numerous genes at multiple levels and multiple gradations in bipotential gonads. In both normal male differentiation and ES-induced masculinization, the stress pathway and epigenetic regulation play important roles; however, how they co-regulate SDi is unclear. Evidence suggests that the universal emergence or increase in males in aquatic animals is an adaptation to moderate ES. ES-induced sex reversal should be fully investigated in more fish species and extensively in the wild. The potential aquaculture applications and difficulties associated with ESDi have also been addressed. Finally, the knowledge gaps in the ESDi are presented, which will guide the priorities of future research.
Collapse
Affiliation(s)
- Yue Yu
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Huazhong Agricultural University, Wuhan, PR China
| | - Min Chen
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Huazhong Agricultural University, Wuhan, PR China
| | - Zhi-Gang Shen
- College of Fisheries, Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Huazhong Agricultural University, Wuhan, PR China.
| |
Collapse
|
8
|
Castañeda-Cortés DC, Rosa IF, Boan AF, Marrone D, Pagliaro N, Oliveira MA, Rodrigues MS, Doretto LB, Silva C, Tavares-Júnior J, Costa DF, Dodds MS, Strobl-Mazzulla PH, Langlois VS, Nóbrega RH, Fernandino JI. Thyroid axis participates in high-temperature-induced male sex reversal through its activation by the stress response. Cell Mol Life Sci 2023; 80:253. [PMID: 37589787 PMCID: PMC11071808 DOI: 10.1007/s00018-023-04913-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/15/2023] [Accepted: 08/04/2023] [Indexed: 08/18/2023]
Abstract
Environmental changes alter the sex fate in about 15% of vertebrate orders, mainly in ectotherms such as fish and reptiles. However, the effects of temperature changes on the endocrine and molecular processes controlling gonadal sex determination are not fully understood. Here, we provide evidence that thyroid hormones (THs) act as co-players in heat-induced masculinization through interactions with the stress axis to promote testicular development. We first demonstrated that the thyroid axis (through thyroid-related genes and T3 levels) is highly active in males during the gonadal development in medaka (Oryzias latipes). Similarly, T3 treatments promoted female-to-male sex reversal in XX embryos. Subsequently, embryonic exposure to temperature-induced stress up-regulated the genes related to the thyroid and stress axes with a final increase in T3 levels. In this context, we show that blocking the stress axis response by the loss of function of the corticotropin-releasing hormone receptors suppresses thyroid-stimulating hormone expression, therefore, heat-induced activation of the thyroid axis. Thus, our data showed that early activation of the stress axis and, in consequence, the TH axis, too, leaves us with that both being important endocrine players in inducing female-to-male reversal, which can help predict possible upcoming physiological impacts of global warming on fish populations.
Collapse
Affiliation(s)
- Diana C Castañeda-Cortés
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
- Institut National de la Recherche Scientifique (INRS) - Centre Eau Terre Environnement, Québec, QC, Canada
| | - Ivana F Rosa
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Agustín F Boan
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Demian Marrone
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Natalia Pagliaro
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Marcos A Oliveira
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Maira S Rodrigues
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Lucas B Doretto
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Camila Silva
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - José Tavares-Júnior
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - Daniel F Costa
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | - María S Dodds
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Pablo H Strobl-Mazzulla
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Valerie S Langlois
- Institut National de la Recherche Scientifique (INRS) - Centre Eau Terre Environnement, Québec, QC, Canada.
| | - Rafael H Nóbrega
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Vodňany, Ceske Budejovice, 389 25, Czech Republic.
| | - Juan I Fernandino
- Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Chascomús, Argentina.
- Escuela de Bio y Nanotecnologías (UNSAM), Chascomús, Argentina.
| |
Collapse
|
9
|
Adolfi MC, Depincé A, Wen M, Pan Q, Herpin A. Development of Ovaries and Sex Change in Fish: Bringing Potential into Action. Sex Dev 2023; 17:84-98. [PMID: 36878204 DOI: 10.1159/000526008] [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: 01/03/2022] [Accepted: 07/08/2022] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Encompassing about half of the 60,000 species of vertebrates, fish display the greatest diversity of sex determination mechanisms among metazoans. As such that phylum offers a unique playground to study the impressive variety of gonadal morphogenetic strategies, ranging from gonochorism, with either genetic or environmental sex determination, to unisexuality, with either simultaneous or consecutive hermaphroditism. SUMMARY From the two main types of gonads, the ovaries embrace the important role to produce the larger and non-motile gametes, which is the basis for the development of a future organism. The production of the egg cells is complex and involves the formation of follicular cells, which are necessary for the maturation of the oocytes and the production of feminine hormones. In this vein, our review focuses on the development of ovaries in fish with special emphasis on the germ cells, including those that transition from one sex to the other as part of their life cycle and those that are capable of transitioning to the opposite sex depending on environmental cues. KEY MESSAGES Clearly, establishing an individual as either a female or a male is not accomplished by the sole development of two types of gonads. In most cases, that dichotomy, be it final or transient, is accompanied by coordinated transformations across the entire organism, leading to changes in the physiological sex as a whole. These coordinated transformations require both molecular and neuroendocrine networks, but also anatomical and behavioural adjustments. Remarkably, fish managed to tame the ins and outs of sex reversal mechanisms to take the most advantages of changing sex as adaptive strategies in some situations.
Collapse
Affiliation(s)
- Mateus Contar Adolfi
- Developmental Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany
| | | | - Ming Wen
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Qiaowei Pan
- Department of Ecology and Evolution, University of Lausanne, Lausanne, Switzerland
| | - Amaury Herpin
- Fish Physiology and Genomics, INRAE, UR 1037, Rennes, France
| |
Collapse
|
10
|
Su J, Yi S, Gao Z, Abbas K, Zhou X. DNA methylation mediates gonadal development via regulating the expression levels of cyp19a1a in loach Misgurnus anguillicaudatus. Int J Biol Macromol 2023; 235:123794. [PMID: 36828090 DOI: 10.1016/j.ijbiomac.2023.123794] [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: 12/08/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/24/2023]
Abstract
DNA methylation-mediated transcriptional regulation has been considered to significantly impact some steroidogenic enzyme genes expression. To uncover the roles of DNA methylation on the regulation of aromatase gene expression during gametogenesis in Misgurnus anguillicaudatus, the expression profiles and cellular localization of cyp19a1a and cyp19a1b were analyzed, and the landscape of DNA methylation dynamics was investigated. We found that cyp19a1a was predominantly expressed in granulosa cells of oocytes, while cyp19a1b expression was enriched in radial glial cells of the forebrain. In ovary, cyp19a1a was highly expressed until the vitellogenesis stage. The average methylation levels, especially for two CpG sites within the cAMP response element, were negatively correlated with cyp19a1a expression levels, indicating that methylation could regulate cyp19a1a transcriptional activity by modulating the binding efficiency of cAMP to its response elements. Compared with in ovary, cyp19a1a showed lower expression in testis but was hypermethylated. Cyp19a1b in female brain weakly expressed before the vitellogenesis stage, but significantly elevated at the maturation stage. In both sexes, it maintained high methylation levels in brain despite the obvious fluctuation of the cyp19a1b expression. This study revealed that DNA methylation plays a key role in establishing cyp19a1a spatiotemporal expression patterns and thus mediates gonadal development in teleosts.
Collapse
Affiliation(s)
- Junxiao Su
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
| | - Shaokui Yi
- College of Life Sciences, Huzhou University, Huzhou 313000, China.
| | - Zexia Gao
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
| | - Khalid Abbas
- Aquaculture Biotechnology Lab, Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan.
| | - Xiaoyun Zhou
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China.
| |
Collapse
|
11
|
Amh/Amhr2 Signaling Causes Masculinization by Inhibiting Estrogen Synthesis during Gonadal Sex Differentiation in Japanese Flounder ( Paralichthys olivaceus). Int J Mol Sci 2023; 24:ijms24032480. [PMID: 36768803 PMCID: PMC9917198 DOI: 10.3390/ijms24032480] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
The anti-Müllerian hormone (Amh) is a protein belonging to the TGF-β superfamily, the function of which has been considered important for male sex differentiation in vertebrates. The Japanese flounder (Paralichthys olivaceus) is a teleost fish that has an XX/XY sex determination system and temperature-dependent sex determination. In this species, amh expression is up-regulated in genetic males and in temperature-induced masculinization during the sex differentiation period. However, to the best of our knowledge, no reports on the Amh receptor (Amhr2) in flounder have been published, and the details of Amh signaling remain unclear. In this study, we produced amhr2-deficient mutants using the CRISPR/Cas9 system and analyzed the gonadal phenotypes and sex-related genes. The results revealed that the gonads of genetically male amhr2 mutants featured typical ovaries, and the sex differentiation-related genes showed a female expression pattern. Thus, the loss of Amhr2 function causes male-to-female sex reversal in Japanese flounder. Moreover, the treatment of genetically male amhr2 mutants with an aromatase inhibitor fadrozole, which inhibits estrogen synthesis, resulted in testicular formation. These results strongly suggest that Amh/Amhr2 signaling causes masculinization by inhibiting estrogen synthesis during gonadal sex differentiation in the flounder.
Collapse
|
12
|
Hattori RS, Kumazawa K, Nakamoto M, Nakano Y, Yamaguchi T, Kitano T, Yamamoto E, Fuji K, Sakamoto T. Y-specific amh allele, amhy, is the master sex-determining gene in Japanese flounder Paralichthys olivaceus. Front Genet 2022; 13:1007548. [PMID: 36186422 PMCID: PMC9523440 DOI: 10.3389/fgene.2022.1007548] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 08/25/2022] [Indexed: 01/12/2023] Open
Abstract
Japanese flounder (Paralichthys olivaceus) is an important marine fish species of both fisheries and aquaculture in Northeast Asia. The commercial interest for all-female progenies due to several sex-related traits has prompted basic research on the mechanisms of sex determination in this species. By conducting a linkage analysis of the sex-determining locus, we initially identified 12 microsatellite markers linked to sex in 11 scaffolds, whose localization was restricted to a specific region of linkage group 9. Sequence analysis of this region identified 181 genes based on the UniProt database annotations. Among them, the amh gene was considered a potential candidate for sex determination because this gene is known to have taken over the role of sex determination in many teleosts. An in-depth sequence analysis of both the coding and non-coding regions of amh in XX and XY individuals detected nine SNPs linked with maleness. However, because these substitutions were synonymous, the upstream and downstream regions of amh were also investigated and a male-specific variant with deletions in the promoter region was detected. This truncated Y-specific amh variant was named amhy, and the amh shared by both sexes was named amhx. The association analysis using both females and males of the genotypic sex inferred by the presence/absence of amhy found complete association with phenotypic sex and genotype. Gene expression analysis in larvae derived from a single-pair progeny by quantitative real-time PCR detected amhy transcripts in the larval trunks between 20 and 100 days after hatching only in XY larvae. Localization of amhy by in situ hybridization was detected in presumptive Sertoli cells of XY gonads. Expression of amhx was almost undetectable in both XX and XY genotypes. Loss of Amh function by CRISPR-Cas9 induced male-to-female sex reversal, indicating that this gene was necessary for the masculinization of XY individuals. In conclusion, the complete linkage of amhy with males, its early expression in XY gonads before testicular differentiation, and the induction of sex reversal by loss-of-function mutation support the view that amhy is the sex-determining gene in this species.
Collapse
Affiliation(s)
- Ricardo Shohei Hattori
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Keiichiro Kumazawa
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Masatoshi Nakamoto
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Yuki Nakano
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Toshiya Yamaguchi
- Nansei Field Station, National Research and Development Agency, Japan Fisheries Research and Education Agency, Mie, Japan
| | - Takeshi Kitano
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Eiichi Yamamoto
- Tottori Prefectural Fisheries Experimental Station, Tottori, Japan
| | - Kanako Fuji
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Takashi Sakamoto
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
- *Correspondence: Takashi Sakamoto,
| |
Collapse
|
13
|
Goikoetxea A, Todd EV, Muncaster S, Lokman PM, Thomas JT, Robertson HA, De Farias e Moraes CE, Gemmell NJ. Effects of cortisol on female-to-male sex change in a wrasse. PLoS One 2022; 17:e0273779. [PMID: 36048785 PMCID: PMC9436091 DOI: 10.1371/journal.pone.0273779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/16/2022] [Indexed: 11/19/2022] Open
Abstract
Sex change occurs as a usual part of the life cycle for many teleost fish and the modifications involved (behavioural, gonadal, morphological) are well studied. However, the mechanism that transduces environmental cues into the molecular cascade that underlies this transformation remains unknown. Cortisol, the main stress hormone in fish, is hypothesised to be a key factor linking environmental stimuli with sex change by initiating gene expression changes that shift steroidogenesis from oestrogens to androgens but this notion remains to be rigorously tested. Therefore, this study aimed to experimentally test the role of cortisol as an initiator of sex change in a protogynous (female-to-male) hermaphrodite, the New Zealand spotty wrasse (Notolabrus celidotus). We also sought to identify potential key regulatory factors within the head kidney that may contribute to the initiation and progression of gonadal sex change. Cortisol pellets were implanted into female spotty wrasses under inhibitory conditions (presence of a male), and outside of the optimal season for natural sex change. Histological analysis of the gonads and sex hormone analyses found no evidence of sex change after 71 days of cortisol treatment. However, expression analyses of sex and stress-associated genes in gonad and head kidney suggested that cortisol administration did have a physiological effect. In the gonad, this included upregulation of amh, a potent masculinising factor, and nr3c1, a glucocorticoid receptor. In the head kidney, hsd11b2, which converts cortisol to inactive cortisone to maintain cortisol balance, was upregulated. Overall, our results suggest cortisol administration outside of the optimal sex change window is unable to initiate gonadal restructuring. However, our expression data imply key sex and stress genes are sensitive to cortisol. This includes genes expressed in both gonad and head kidney that have been previously implicated in early sex change in several sex-changing species.
Collapse
Affiliation(s)
- Alexander Goikoetxea
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- * E-mail:
| | - Erica V. Todd
- School of Life and Environmental Sciences, Deakin University, Geelong, Australia
| | - Simon Muncaster
- Environmental Management Group, Toi Ohomai Institute of Technology, Tauranga, New Zealand
- School of Science, University of Waikato, Tauranga, New Zealand
| | - P. Mark Lokman
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Jodi T. Thomas
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Holly A. Robertson
- Environmental Management Group, Toi Ohomai Institute of Technology, Tauranga, New Zealand
| | | | - Neil J. Gemmell
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| |
Collapse
|
14
|
Goikoetxea A, Servili A, Houdelet C, Mouchel O, Hermet S, Clota F, Aerts J, Fernandino JI, Allal F, Vandeputte M, Blondeau-Bidet E, Geffroy B. Natural cortisol production is not linked to the sexual fate of European sea bass. FISH PHYSIOLOGY AND BIOCHEMISTRY 2022; 48:1117-1135. [PMID: 35917042 DOI: 10.1007/s10695-022-01104-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
In this study, we aimed to investigate the relationship between cortisol and the determination of sexual fate in the commercially important European sea bass (Dicentrarchus labrax). To test our hypothesis, we designed two temperature-based experiments (19 ℃, 21 ℃ and 23 ℃, experiment 1; 16 ℃ and 21 ℃, experiment 2) to assess the effects of these thermal treatments on European sea bass sex determination and differentiation. In the fish from the first experiment, we evaluated whether blood cortisol levels and expression of stress key regulatory genes were different between differentiating (149 to 183 dph) males and females. In the second experiment, we assessed whether cortisol accumulated in scales over time during the labile period for sex determination as well as the neuroanatomical localisation of brain cells expressing brain aromatase (cyp19a1b) and corticotropin-releasing factor (crf) differed between males and females undergoing molecular sex differentiation (117 to 124 dph). None of the gathered results allowed to detect differences between males and females regarding cortisol production and regulatory mechanisms. Altogether, our data provide strong physiological, molecular and histochemical evidence, indicating that in vivo cortisol regulation has no major effects on the sex of European sea bass.
Collapse
Affiliation(s)
| | - Arianna Servili
- Ifremer, IFREMER, Univ Brest, CNRS, IRD, LEMAR, 29280, Plouzané, France
| | - Camille Houdelet
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - Olivier Mouchel
- Ifremer, IFREMER, Univ Brest, CNRS, IRD, LEMAR, 29280, Plouzané, France
| | - Sophie Hermet
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Montpellier, France
| | - Fréderic Clota
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, France
| | - Johan Aerts
- Stress Physiology Research Group, Faculty of Sciences, Ghent University, Ostend, Belgium
| | | | - François Allal
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - Marc Vandeputte
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, Jouy-en-Josas, France
| | | | - Benjamin Geffroy
- MARBEC Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| |
Collapse
|
15
|
Xiao H, Xu Z, Zhu X, Wang J, Zheng Q, Zhang Q, Xu C, Tao W, Wang D. Cortisol safeguards oogenesis by promoting follicular cell survival. SCIENCE CHINA. LIFE SCIENCES 2022; 65:1563-1577. [PMID: 35167018 DOI: 10.1007/s11427-021-2051-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
The role of glucocorticoids in oogenesis remains to be elucidated. cyp11c1 encodes the key enzyme involved in the synthesis of cortisol, the major glucocorticoid in teleosts. In our previous study, we mutated cyp11c1 in tilapia and analyzed its role in spermatogenesis. In this study, we analyzed its role in oogenesis. cyp11c1+/- XX tilapia showed normal ovarian morphology but poor egg quality, as indicated by the mortality of embryos before 3 d post fertilization, which could be partially rescued by the supplement of exogenous cortisol to the mother fish. Transcriptome analyses revealed reduced expression of maternal genes in the eggs of the cyp11c1+/- XX fish. The cyp11c1-/- females showed impaired vitellogenesis and arrested oogenesis due to significantly decreased serum cortisol. Further analyses revealed decreased serum E2 level and expression of amh, an important regulator of follicular cell development, and increased follicular cell apoptosis in the ovaries of cyp11c1-/- XX fish, which could be rescued by supplement of either exogenous cortisol or E2. Luciferase assays revealed a direct regulation of cortisol and E2 on amh transcription via GRs or ESRs. Taken together, our results demonstrate that cortisol safeguards oogenesis by promoting follicular cell survival probably via Amh signaling.
Collapse
Affiliation(s)
- Hesheng Xiao
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Zhen Xu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Xi Zhu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Jingrong Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Qiaoyuan Zheng
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Qingqing Zhang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Chunmei Xu
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China
| | - Wenjing Tao
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China.
| | - Deshou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
16
|
Horiuchi M, Hagihara S, Kume M, Chushi D, Hasegawa Y, Itakura H, Yamashita Y, Adachi S, Ijiri S. Morphological and Molecular Gonadal Sex Differentiation in the Wild Japanese eel Anguilla japonica. Cells 2022; 11:cells11091554. [PMID: 35563858 PMCID: PMC9105286 DOI: 10.3390/cells11091554] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 02/04/2023] Open
Abstract
Most cultured Japanese eels (Anguilla japonica) show male sex differentiation; however, natural gonadal sex differentiation has not been evaluated. In this study, this process was characterized in wild eels. Differentiated ovaries and testes were observed after the eels grew to 320 and 300 mm in total length, respectively. The youngest ovary and testis appeared at 3 and 4 years old, respectively; however, undifferentiated gonads were found up to 7 years, suggesting that sex differentiation was triggered by growth rather than aging. gsdf, amh, foxl2b and foxl3b were highly expressed in the testes, whereas figla, sox3, foxn5, zar1, and zp3 were highly expressed in the ovaries. The expression of cyp19a1a and foxl2a did not differ significantly between the testis and ovary. In the ovaries, the cyp19a1a and foxl2a levels were highest in the early stages, suggesting that their function is limited to early ovarian differentiation. The foxn5, zar1 and zp3 levels tended to increase in the later stages, suggesting that they function after the initiation of ovarian differentiation. In undifferentiated gonads, dimorphic gene expression was not observed, suggesting that the molecular sex differentiation phase is short and difficult to detect. These findings provide the first demonstration of the whole course of natural gonadal sex differentiation in eels at molecular and morphological levels.
Collapse
Affiliation(s)
- Moemi Horiuchi
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Hokkaido, Japan; (M.H.); (D.C.); (Y.H.); (S.A.)
| | - Seishi Hagihara
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 277-8564, Chiba, Japan; (S.H.); (H.I.)
| | - Manabu Kume
- Field Science Education and Research Center, Kyoto University, Kyoto 606-8502, Kyoto, Japan; (M.K.); (Y.Y.)
| | - Daichi Chushi
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Hokkaido, Japan; (M.H.); (D.C.); (Y.H.); (S.A.)
| | - Yuya Hasegawa
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Hokkaido, Japan; (M.H.); (D.C.); (Y.H.); (S.A.)
| | - Hikaru Itakura
- Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa 277-8564, Chiba, Japan; (S.H.); (H.I.)
| | - Yoh Yamashita
- Field Science Education and Research Center, Kyoto University, Kyoto 606-8502, Kyoto, Japan; (M.K.); (Y.Y.)
| | - Shinji Adachi
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Hokkaido, Japan; (M.H.); (D.C.); (Y.H.); (S.A.)
| | - Shigeho Ijiri
- Graduate School of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Hokkaido, Japan; (M.H.); (D.C.); (Y.H.); (S.A.)
- Correspondence:
| |
Collapse
|
17
|
Dynamics of sexual development in teleosts with a note on Mugil cephalus. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
18
|
Bhattacharjee S, Ceri Davies D, Holland JC, Holmes JM, Kilroy D, McGonnell IM, Reynolds AL. On the importance of integrating comparative anatomy and One Health perspectives in anatomy education. J Anat 2022; 240:429-446. [PMID: 34693516 PMCID: PMC8819042 DOI: 10.1111/joa.13570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/24/2021] [Accepted: 10/05/2021] [Indexed: 12/02/2022] Open
Abstract
As a result of many factors, including climate change, unrestricted population growth, widespread deforestation and intensive agriculture, a new pattern of diseases in humans is emerging. With increasing encroachment by human societies into wild domains, the interfaces between human and animal ecosystems are gradually eroding. Such changes have led to zoonoses, vector-borne diseases, infectious diseases and, most importantly, the emergence of antimicrobial-resistant microbial strains as challenges for human health. Now would seem to be an opportune time to revisit old concepts of health and redefine some of these in the light of emerging challenges. The One Health concept addresses some of the demands of modern medical education by providing a holistic approach to explaining diseases that result from a complex set of interactions between humans, environment and animals, rather than just an amalgamation of isolated signs and symptoms. An added advantage is that the scope of One Health concepts has now expanded to include genetic diseases due to advancements in omics technology. Inspired by such ideas, a symposium was organised as part of the 19th International Federation of Associations of Anatomists (IFAA) Congress (August 2019) to investigate the scope of One Health concepts and comparative anatomy in contemporary medical education. Speakers with expertise in both human and veterinary anatomy participated in the symposium and provided examples where these two disciplines, which have so far evolved largely independent of each other, can collaborate for mutual benefit. Finally, the speakers identified some key concepts of One Health that should be prioritised and discussed the diverse opportunities available to integrate these priorities into a broader perspective that would attempt to explain and manage diseases within the scopes of human and veterinary medicine.
Collapse
Affiliation(s)
| | - D. Ceri Davies
- Human Anatomy UnitDepartment of Surgery and CancerImperial College LondonLondonUK
| | - Jane C. Holland
- Department of Anatomy and Regenerative MedicineRoyal College of Surgeons in Ireland University of Medicine and Health SciencesDublinIreland
| | | | - David Kilroy
- School of Veterinary MedicineUniversity College DublinDublinIreland
| | - Imelda M. McGonnell
- Department of Comparative Biomedical SciencesRoyal Veterinary CollegeLondonUK
| | - Alison L. Reynolds
- School of Veterinary MedicineUniversity College DublinDublinIreland
- Conway Institute of Biomolecular and Biomedical ResearchUniversity College DublinDublinIreland
| |
Collapse
|
19
|
Sexual plasticity in bony fishes: Analyzing morphological to molecular changes of sex reversal. AQUACULTURE AND FISHERIES 2022. [DOI: 10.1016/j.aaf.2022.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
20
|
Delbes G, Blázquez M, Fernandino JI, Grigorova P, Hales BF, Metcalfe C, Navarro-Martín L, Parent L, Robaire B, Rwigemera A, Van Der Kraak G, Wade M, Marlatt V. Effects of endocrine disrupting chemicals on gonad development: Mechanistic insights from fish and mammals. ENVIRONMENTAL RESEARCH 2022; 204:112040. [PMID: 34509487 DOI: 10.1016/j.envres.2021.112040] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Over the past century, evidence has emerged that endocrine disrupting chemicals (EDCs) have an impact on reproductive health. An increased frequency of reproductive disorders has been observed worldwide in both wildlife and humans that is correlated with accidental exposures to EDCs and their increased production. Epidemiological and experimental studies have highlighted the consequences of early exposures and the existence of key windows of sensitivity during development. Such early in life exposures can have an immediate impact on gonadal and reproductive tract development, as well as on long-term reproductive health in both males and females. Traditionally, EDCs were thought to exert their effects by modifying the endocrine pathways controlling reproduction. Advances in knowledge of the mechanisms regulating sex determination, differentiation and gonadal development in fish and rodents have led to a better understanding of the molecular mechanisms underlying the effects of early exposure to EDCs on reproduction. In this manuscript, we review the key developmental stages sensitive to EDCs and the state of knowledge on the mechanisms by which model EDCs affect these processes, based on the roadmap of gonad development specific to fish and mammals.
Collapse
Affiliation(s)
- G Delbes
- Centre Armand Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS), Laval, Canada.
| | - M Blázquez
- Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain
| | - J I Fernandino
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Argentina
| | | | - B F Hales
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Canada
| | - C Metcalfe
- School of Environment, Trent University, Trent, Canada
| | - L Navarro-Martín
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
| | - L Parent
- Université TELUQ, Montréal, Canada
| | - B Robaire
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Canada; Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
| | - A Rwigemera
- Centre Armand Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS), Laval, Canada
| | - G Van Der Kraak
- Department of Integrative Biology, University of Guelph, Guelph, Canada
| | - M Wade
- Environmental Health Science & Research Bureau, Health Canada, Ottawa, Canada
| | - V Marlatt
- Department of Biological Sciences, Simon Fraser University, Burnaby, Canada
| |
Collapse
|
21
|
Liu Y, Bai S, Wang Y, Li X, Qu J, Han M, Zhai J, Li W, Liu J, Zhang Q. Intensive masculinization caused by chronic heat stress in juvenile Cynoglossus semilaevis: Growth performance, gonadal histology and gene responses. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 232:113250. [PMID: 35121259 DOI: 10.1016/j.ecoenv.2022.113250] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 06/14/2023]
Abstract
The sea temperature has been observed to chronically increase during the past decades, leaving unpredictable influences to the marine biological resources. Thus, it is of vital significance to study the biological responses of ocean inhabited organisms with the artificially stimulated heat stress environment. Cynoglossus semilaevis provides us with an ideal model to study the influence of chronic heat stress on the sexual differentiation in marine teleosts for its genetic sex determination (GSD) + environmental effected (EE) sex determination system. In this study, the comparative experiment was conducted employing heated seawater (HT group) and ambient seawater (CT group) to cultivate juvenile C. semilaevis respectively. Significant differences were exhibited in growth performance and a delayed germ cell development effect was found in pseudomales formed under chronic heat stress. Using transcriptome analysis, the transcription profile of 55 days post fertilization (dpf) and 100 dpf juveniles' gonads were studied. A total of 47 libraries were constructed with an average mapping rate of 94.63% after assembling. GO and KEGG enrichment were proceeded using DEGs screened out between (1) pseudomale gonads at 55 dpf and 100 dpf in HT and CT group (2) pseudomale and female gonads at 55 dpf and 100 dpf in HT and CT group. Terms and pathways involved in steroid stimulation, reproduction ability, germ cell proliferation et al. were shed light on. The expression pattern of 29 DEGs including amh, hsp90b1, pgr et al. were also provided to supplement the results of functional enrichment. Weighted gene co-expression networks analysis (WGCNA) was constructed and hspb8-like, histone H2A.V were exhibited to play vital roles in the heat-induced masculinization. Our findings facilitate the understanding for transcriptional variations in intensive masculinization cause by chronic heat stress of C. semilaevis and provide referable study of the influences on the teleosts in elevated sea temperature.
Collapse
Affiliation(s)
- Yuxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Shujun Bai
- Laboratory of Fisheries Oceanography, College of Fisheries, Ocean University of China, Qingdao, China
| | - Yujue Wang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Xiaoqi Li
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
| | - Jiangbo Qu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Miao Han
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China
| | - Jieming Zhai
- Laizhou Mingbo Aquatic Co., Ltd., Laizhou, China
| | - Wensheng Li
- Laizhou Mingbo Aquatic Co., Ltd., Laizhou, China
| | - Jinxiang Liu
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China.
| | - Quanqi Zhang
- Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong, China; Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China.
| |
Collapse
|
22
|
Cao ZM, Qiang J, Zhu JH, Li HX, Tao YF, He J, Xu P, Dong ZJ. Transcriptional inhibition of steroidogenic factor 1 in vivo in Oreochromis niloticus increased weight and suppressed gonad development. Gene 2022; 809:146023. [PMID: 34673205 DOI: 10.1016/j.gene.2021.146023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 10/09/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022]
Abstract
Steroidogenic factor 1 (sf1) (officially designated as nuclear receptor subfamily 5 group A member 1 [NR5A1]) is an important regulator of gonad development. Previous studies on sf1 in fish have been limited to cloning and in vitro expression experiments. In this study, we used antisense RNA to down-regulate sf1 transcription and sf1 protein expression. Down-regulation of sf1 resulted in an increase in body weight and inhibition of gonadal development in both males and females with the consequent lower gonadosomatic index compared to fish in the control group. Hematoxylin-eosin staining of the gonads of fish with down-regulated sf1 revealed fewer seminiferous tubules and sperm in the testis of males. In addition, the oocytes were mainly stage II and many of them were atretic follicle. We conducted comparative transcriptome and proteome analyses between the sf1-down-regulated group and the control group. These analyses revealed multiple gene-protein pairs and pathways involved in regulating the observed changes, including 44 and 74 differently expressed genes and proteins in males and females, respectively. The results indicated that dysfunctional retinal metabolism and fatty acid metabolism could be causes of the observed weight gain and gonad abnormalities in sf1-down-regulated fish. These findings demonstrate the feasibility of using antisense RNA for gene editing in fish. This methodology allows the study gene function in species less amenable to gene editing as for example aquaculture species with long life cycles.
Collapse
Affiliation(s)
- Zhe-Ming Cao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China
| | - Jun Qiang
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China; Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China
| | - Jun-Hao Zhu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China
| | - Hong-Xia Li
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China
| | - Yi-Fan Tao
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China
| | - Jie He
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China
| | - Pao Xu
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China; Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China.
| | - Zai-Jie Dong
- Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, Jiangsu, China.
| |
Collapse
|
23
|
Sharma P, Purohit S, Kothiyal S, Negi S, Bhattacharya I. Sex Specific Transcriptional Regulation of Gonadal Steroidogenesis in Teleost Fishes. Front Endocrinol (Lausanne) 2022; 13:820241. [PMID: 35250877 PMCID: PMC8894591 DOI: 10.3389/fendo.2022.820241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 01/10/2022] [Indexed: 11/29/2022] Open
|
24
|
Mukai K, Hara S, Sakima K, Nozu R, Yazawa T, Kitano T. Oxidative Stress Causes Masculinization of Genetically Female Medaka Without Elevating Cortisol. Front Endocrinol (Lausanne) 2022; 13:878286. [PMID: 35832427 PMCID: PMC9272773 DOI: 10.3389/fendo.2022.878286] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/13/2022] [Indexed: 11/13/2022] Open
Abstract
Medaka (Oryzias latipes) is a teleost fish with an XX/XY sex determination system. Sex reversal from female-to-male (masculinization of XX fish) can be induced through cortisol elevation from exposure to environmental stress such as high temperature during sexual differentiation. However, the effects of oxidative stress, generated via metabolic reactions and biological defense mechanisms, on the sexual differentiation of medaka are unclear. Here, we investigated the effect of oxidative stress on medaka sexual differentiation using hydrogen peroxide (H2O2), which induces oxidative stress in vertebrates. H2O2 treatment from 0 to 5 days post-hatching induced masculinization of wild-type XX medaka, but not of gonadal soma-derived growth factor (gsdf) or peroxisome proliferator-activated receptor alpha-a (pparaa) knockout XX fish. Co-treatment with an oxidative stress inhibitor caused masculinization recovery but co-treatment with a cortisol synthesis inhibitor did not. H2O2 treatment significantly upregulated gsdf and pparaa expression in XX medaka. However, H2O2 did not elevate cortisol levels in medaka larvae during sexual differentiation. These results strongly indicate that oxidative stress induces masculinization of XX medaka without causing elevation of cortisol.
Collapse
Affiliation(s)
- Koki Mukai
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Seiji Hara
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Konosuke Sakima
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Ryo Nozu
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
| | - Takashi Yazawa
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Japan
| | - Takeshi Kitano
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
- International Research Center for Agricultural and Environmental Biology, Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan
- *Correspondence: Takeshi Kitano,
| |
Collapse
|
25
|
Zhou L, Li M, Wang D. Role of sex steroids in fish sex determination and differentiation as revealed by gene editing. Gen Comp Endocrinol 2021; 313:113893. [PMID: 34454946 DOI: 10.1016/j.ygcen.2021.113893] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 11/29/2022]
Abstract
The involvement of sex steroids in sex determination and differentiation is relatively conserved among non-mammalian vertebrates, especially in fish. Thanks to the advances in genome sequencing and genome editing, significant progresses have been made in the understanding of steroidogenic pathway and hormonal regulation of sex determination and differentiation in fish. It seems that loss of function study of single gene challenges the traditional views that estrogen is required for ovarian differentiation and androgen is needed for testicular development, but it is not so in essence. Steroidogenic enzymes can be classified into two categories based on expression and enzyme activities in fish. One type, encoded by star2, cyp17a1 and cyp19a1a, is involved in estrogen production and exclusively expressed in the gonads. Mutation of these genes results in the up-regulation of male pathway genes and sex reversal from genetic female to male. The other type, encoded by the duplicated paralogs of the above genes, including star1, cyp11a1, cyp17a2 and cyp19a1b, as well as cyp11c1 gene, is dominantly expressed both in gonads and extra-gonadal tissues. Mutation of these genes alters the steroids (androgen, DHP and cortisol) production and spermatogenesis, fertility, secondary sexual characteristics and sexual behavior, but usually does not affect the sex differentiation. For the estrogen receptors (esr1, esr2a and esr2b), single mutation failed to, but double and triple mutation leads to sex reversal from female to male, indicating that at least Esr2a and Esr2b are required to mediate the role of estrogen in sex determination proved by gene editing experiments. Taken together, results from gene editing enrich our understanding of steroid synthesis pathways and further confirm the critical role of estrogen in female sex determination by antagonizing the male pathway in fish.
Collapse
Affiliation(s)
- Linyan Zhou
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Minghui Li
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Deshou Wang
- Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, School of Life Sciences, Southwest University, Chongqing 400715, China.
| |
Collapse
|
26
|
Vissio PG, Di Yorio MP, Pérez-Sirkin DI, Somoza GM, Tsutsui K, Sallemi JE. Developmental aspects of the hypothalamic-pituitary network related to reproduction in teleost fish. Front Neuroendocrinol 2021; 63:100948. [PMID: 34678303 DOI: 10.1016/j.yfrne.2021.100948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/27/2021] [Accepted: 10/04/2021] [Indexed: 12/11/2022]
Abstract
The hypothalamic-pituitary-gonadal axis is the main system that regulates reproduction in vertebrates through a complex network that involves different neuropeptides, neurotransmitters, and pituitary hormones. Considering that this axis is established early on life, the main goal of the present work is to gather information on its development and the actions of its components during early life stages. This review focuses on fish because their neuroanatomical characteristics make them excellent models to study neuroendocrine systems. The following points are discussed: i) developmental functions of the neuroendocrine components of this network, and ii) developmental disruptions that may impact adult reproduction. The importance of the components of this network and their susceptibility to external/internal signals that can alter their specific early functions and/or even the establishment of the reproductive axis, indicate that more studies are necessary to understand this complex and dynamic network.
Collapse
Affiliation(s)
- Paula G Vissio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina.
| | - María P Di Yorio
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
| | - Daniela I Pérez-Sirkin
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
| | - Gustavo M Somoza
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Argentina
| | - Kazuyoshi Tsutsui
- Department of Biology and Center for Medical Life Science, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan; Graduate School of Integrated Sciences for Life, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima 739-8521, Japan
| | - Julieta E Sallemi
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental, Buenos Aires, Argentina; CONICET - Universidad de Buenos Aires, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), CONICET, Buenos Aires, Argentina
| |
Collapse
|
27
|
Sex Determination and Differentiation in Teleost: Roles of Genetics, Environment, and Brain. BIOLOGY 2021; 10:biology10100973. [PMID: 34681072 PMCID: PMC8533387 DOI: 10.3390/biology10100973] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 01/19/2023]
Abstract
The fish reproductive system is a complex biological system. Nonetheless, reproductive organ development is conserved, which starts with sex determination and then sex differentiation. The sex of a teleost is determined and differentiated from bipotential primordium by genetics, environmental factors, or both. These two processes are species-specific. There are several prominent genes and environmental factors involved during sex determination and differentiation. At the cellular level, most of the sex-determining genes suppress the female pathway. For environmental factors, there are temperature, density, hypoxia, pH, and social interaction. Once the sexual fate is determined, sex differentiation takes over the gonadal developmental process. Environmental factors involve activation and suppression of various male and female pathways depending on the sexual fate. Alongside these factors, the role of the brain during sex determination and differentiation remains elusive. Nonetheless, GnRH III knockout has promoted a male sex-biased population, which shows brain involvement during sex determination. During sex differentiation, LH and FSH might not affect the gonadal differentiation, but are required for regulating sex differentiation. This review discusses the role of prominent genes, environmental factors, and the brain in sex determination and differentiation across a few teleost species.
Collapse
|
28
|
Sakae Y, Tanaka M. Metabolism and Sex Differentiation in Animals from a Starvation Perspective. Sex Dev 2021; 15:168-178. [PMID: 34284403 DOI: 10.1159/000515281] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/12/2021] [Indexed: 11/19/2022] Open
Abstract
Animals determine their sex genetically (GSD: genetic sex determination) and/or environmentally (ESD: environmental sex determination). Medaka (Oryzias latipes) employ a XX/XY GSD system, however, they display female-to-male sex reversal in response to various environmental changes such as temperature, hypoxia, and green light. Interestingly, we found that 5 days of starvation during sex differentiation caused female-to-male sex reversal. In this situation, the metabolism of pantothenate and fatty acid synthesis plays an important role in sex reversal. Metabolism is associated with other biological factors such as germ cells, HPG axis, lipids, and epigenetics, and supplys substances and acts as signal transducers. In this review, we discuss the importance of metabolism during sex differentiation and how metabolism contributes to sex differentiation.
Collapse
Affiliation(s)
- Yuta Sakae
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan
| | - Minoru Tanaka
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Japan
| |
Collapse
|
29
|
Adolfi MC, Herpin A, Schartl M. The replaceable master of sex determination: bottom-up hypothesis revisited. Philos Trans R Soc Lond B Biol Sci 2021; 376:20200090. [PMID: 34247496 DOI: 10.1098/rstb.2020.0090] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Different group of vertebrates and invertebrates demonstrate an amazing diversity of gene regulations not only at the top but also at the bottom of the sex determination genetic network. As early as 1995, based on emerging findings in Drosophila melanogaster and Caenorhabditis elegans, Wilkins suggested that the evolution of the sex determination pathway evolved from the bottom to the top of the hierarchy. Based on our current knowledge, this review revisits the 'bottom-up' hypothesis and applies its logic to vertebrates. The basic operation of the determination network is through the dynamics of the opposing male and female pathways together with a persistent need to maintain the sexual identity of the cells of the gonad up to the reproductive stage in adults. The sex-determining trigger circumstantially acts from outside the genetic network, but the regulatory network is not built around it as a main node, thus maintaining the genetic structure of the network. New sex-promoting genes arise either through allelic diversification or gene duplication and act specially at the sex-determination period, without integration into the complete network. Due to this peripheral position the new regulator is not an indispensable component of the sex-determining network and can be easily replaced. This article is part of the theme issue 'Challenging the paradigm in sex chromosome evolution: empirical and theoretical insights with a focus on vertebrates (Part I)'.
Collapse
Affiliation(s)
- Mateus Contar Adolfi
- Developmental Biochemistry, Biocenter, University of Wuerzburg, 97074 Wuerzburg, Germany
| | - Amaury Herpin
- INRA, UR 1037 Fish Physiology and Genomics, 35000 Rennes, France.,State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Sciences, Hunan Normal University, Changsha 410081, Hunan, People's Republic of China
| | - Manfred Schartl
- Developmental Biochemistry, Biocenter, University of Wuerzburg, 97074 Wuerzburg, Germany.,Xiphophorus Genetic Stock Center, Texas State University, San Marcos, TX 78666, USA
| |
Collapse
|
30
|
Zhong L, Liang YQ, Lu M, Pan CG, Dong Z, Zhao H, Li C, Lin Z, Yao L. Effects of dexamethasone on the morphology, gene expression and hepatic histology in adult female mosquitofish (Gambusia affinis). CHEMOSPHERE 2021; 274:129797. [PMID: 33545586 DOI: 10.1016/j.chemosphere.2021.129797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 05/27/2023]
Abstract
Glucocorticoids (GCs), including natural hormones as well as synthetic chemicals, can pose influences on physiological performance, development and reproduction of fish. Dexamethasone (DEX) is a synthetic glucocorticoid widely used as pharmaceutical and usually exists in effluents with varying degrees of concentrations. In this study, adult female mosquitofish (Gambusia affinis) were treated by DEX at concentrations of 0, 0.5, 5 and 50 μg/L for 60 days. Morphological parameters of anal fin and skeleton, mRNA expression abundance, and histological alterations of liver were investigated to assess effects of DEX on mosquitofish. The results showed that DEX increased number of sections of ray 3 in anal fin and decreased 16L, 15D and 16D in skeletal parameters, which indicates DEX could potentially lead to weak masculinization. Furthermore, transcriptional expression levels of ARα, ARβ, ERβ, VTGC and CYP19A genes were notably down-regulated by DEX, which will contribute to weak masculinization in females. In addition, the damage to liver tissue was also induced by DEX. Taken together, this research demonstrated that aquatic environments contaminated by DEX have negative effects on mosquitofish at a population level.
Collapse
Affiliation(s)
- Lishan Zhong
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China
| | - Yan-Qiu Liang
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524000, PR China.
| | - Mixue Lu
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China
| | - Chang-Gui Pan
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning, 530004, PR China
| | - Zhongdian Dong
- College of Fishery, Guangdong Ocean University, Zhanjiang, 524088, PR China
| | - Hui Zhao
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang, 524000, PR China
| | - Chengyong Li
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China
| | - Zhong Lin
- Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, PR China
| | - Li Yao
- Guangdong Institute of Analysis (China National Analytical Center), Guangdong Academy of Sciences, Guangzhou, 510070, PR China
| |
Collapse
|
31
|
Casas L, Saborido-Rey F. Environmental Cues and Mechanisms Underpinning Sex Change in Fish. Sex Dev 2021; 15:108-121. [PMID: 34111868 DOI: 10.1159/000515274] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 02/07/2021] [Indexed: 11/19/2022] Open
Abstract
Fishes are the only vertebrates that undergo sex change during their lifetime, but even within this group, a unique reproductive strategy is displayed by only 1.5% of the teleosts. This lability in alternating sexual fate is the result of the simultaneous suppression and activation of opposing male and female networks. Here, we provide a brief review summarizing recent advances in our understanding of the environmental cues that trigger sex change and their perception, integration, and translation into molecular cascades that convert the sex of an individual. We particularly focus on molecular events underpinning the complex behavioral and morphological transformation involved in sex change, dissecting the main molecular players and regulatory networks that shape the transformation of one sex into the opposite. We show that histological changes and molecular pathways governing gonadal reorganization are better described than the neuroendocrine basis of sex change and that, despite important advances, information is lacking for the majority of hermaphrodite species. We highlight significant gaps in our knowledge of how sex change takes place and suggest future research directions.
Collapse
Affiliation(s)
- Laura Casas
- Ecology and Marine Resources, Institute of Marine Research (IIM-CSIC), Vigo, Spain
| | - Fran Saborido-Rey
- Ecology and Marine Resources, Institute of Marine Research (IIM-CSIC), Vigo, Spain
| |
Collapse
|
32
|
Erickson KA, West J, Dance MA, Farmer TM, Ballenger JC, Midway SR. Changing climate associated with the range-wide decline of an estuarine finfish. GLOBAL CHANGE BIOLOGY 2021; 27:2520-2536. [PMID: 33738904 DOI: 10.1111/gcb.15568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/26/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Southern flounder (Paralichthys lethostigma) are a coastal flatfish species that supports recreational and commercial fisheries but are currently experiencing range-wide declines. To quantify the range-wide declines and investigate the role of climate in these declines, fishery-independent sampling data of age-0 flounder were obtained from 34 estuaries representing four states in the Gulf of Mexico (TX, LA, AL, and FL) and three states in the Southeastern United States Atlantic Ocean (FL, SC, and NC) spanning from 1976 to 2019. Generalized additive models (GAM) were used to estimate age-0 recruitment trends. Spatial and temporal synchrony analyses were then conducted using annual GAM-predicted values to determine if trends were similar between estuaries in close proximity, and if declines occurred at the same time. Because the species is dependent on physical transport (i.e., winds and tides) for recruitment, hourly wind speed, wind direction, water temperature, and air temperature were obtained for estuaries with non-zero sampling totals and long-term data sets. Only six estuaries showed significant relationships between age-0 flounder indices and growing degree days. However, all estuaries with wind data showed significant relationships between age-0 flounder indices and hourly summed wind speed. Southern flounder also have environmental sex determination, meaning warming estuaries could also account for population changes and declines. We document that water temperatures in the same space and time where southern flounder sexually determine are warmer now than even a decade ago, which could masculinize populations and substantially change population demographics. These results illustrate the vulnerability of estuarine finfish populations to climate change and increased climate variability. Understanding how climate acts on southern flounder biology may help managers respond to and prevent fishery collapses.
Collapse
Affiliation(s)
- Kenneth A Erickson
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Joe West
- Louisiana Department of Wildlife and Fisheries, Baton Rouge, LA, USA
| | - Michael A Dance
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Troy M Farmer
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC, USA
| | - Joseph C Ballenger
- Marine Resources Research Institute, South Carolina Department of Natural Resources, Charleston, SC, USA
| | - Stephen R Midway
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, USA
| |
Collapse
|
33
|
Strüssmann CA, Yamamoto Y, Hattori RS, Fernandino JI, Somoza GM. Where the Ends Meet: An Overview of Sex Determination in Atheriniform Fishes. Sex Dev 2021; 15:80-92. [PMID: 33951664 DOI: 10.1159/000515191] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/22/2021] [Indexed: 11/19/2022] Open
Abstract
Atheriniform fishes have recently emerged as attractive models for evolutionary, ecological, and molecular/physiological studies on sex determination. Many species in this group have marked temperature-dependent sex determination (TSD) and yet many species also have a sex determinant gene that provides a strong drive for male differentiation. Thus, in these species the 2 forms of sex determination that were once considered to be mutually exclusive, environmental (ESD) and genotypic (GSD) sex determination, can coexist at environmentally relevant conditions. Here, we review the current knowledge on sex determination in atheriniform fishes with emphasis on the molecular and physiological mechanisms of ESD and GSD, the coexistence and cross-talk between these 2 mechanisms, the possibility of extragonadal transduction of environmental information and/or extragonadal onset of sex determination, and the results of field studies applying novel tools such as otolith increment analysis and molecular markers of genetic sex developed for selected New World and Old World atheriniform species. We also discuss the existence of molecular and histological mechanisms to prevent the discrepant differentiation in parts of the gonads because of ambiguous or conflicting environmental and genetic signals and particularly the possibility that the female is the default state in these species.
Collapse
Affiliation(s)
- Carlos A Strüssmann
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Yoji Yamamoto
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ricardo S Hattori
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Juan I Fernandino
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Argentina
| | - Gustavo M Somoza
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Argentina
| |
Collapse
|
34
|
Tenugu S, Pranoty A, Mamta SK, Senthilkumaran B. Development and organisation of gonadal steroidogenesis in bony fishes - A review. AQUACULTURE AND FISHERIES 2021. [DOI: 10.1016/j.aaf.2020.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
35
|
Yuan Z, Shen X, Yan H, Jiang J, Liu B, Zhang L, Wu Y, Liu Y, Liu Q. Effects of the Thyroid Endocrine System on Gonadal Sex Ratios and Sex-Related Gene Expression in the Pufferfish Takifugu rubripes. Front Endocrinol (Lausanne) 2021; 12:674954. [PMID: 34025585 PMCID: PMC8139168 DOI: 10.3389/fendo.2021.674954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/20/2021] [Indexed: 12/02/2022] Open
Abstract
To examine the effect and mechanism of thyroid hormone on gonadal sex differentiation, Takifugu rubripes larvae were treated with goitrogen (methimazole, MET, 1000 g/g), and thyroxine (T4, 2nM) from 25 to 80 days after hatching (dah). Gonadal histology and sex ratios of fish were then determined at 80 dah. MET treatment induced masculinization, but T4 treatment did not induce feminization in T. rubripes larvae. Transcriptomic analysis of gonads at 80 dah was then conducted. Among the large number of differentially expressed genes between the groups, the expression of foxl2, cyp19a1a, and dmrt1 was altered. The expression of foxl2, cyp19a1a, dmrt1 and gsdf at 25, 40, 55 days after treatment (dat) was further analyzed by qPCR. MET treatment suppressed the expression of foxl2 and cyp19a1a, and induced the expression of dmrt1 in genetic females (p < 0.05). Additionally, T4 treatment induced an increase in the expression of cyp19a1a in genetic XY gonads only at 25 dat. However, the increase in cyp19a1a expression did not continue to 40 and 55 dat. This may explain why feminization of larvae was not found in the T4-treated group. Thus, the present study provides the first evidence that MET treatment causes masculinization in teleost fish. The effects of MET-induced masculinization in T. rubripes may act primarily via suppression of the expression of foxl2 and cyp19a1a, and stimulation of the expression of dmrt1. Moreover, the effects of higher concentrations of T4 or different concentrations of T3, on sex differentiation require further testing.
Collapse
Affiliation(s)
- Zhen Yuan
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
| | - Xufang Shen
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Life Science, Liaoning Normal University, Dalian, China
| | - Hongwei Yan
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- *Correspondence: Hongwei Yan, ; Qi Liu,
| | - Jieming Jiang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
| | - Binwei Liu
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
| | - Lei Zhang
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Marine Science and Environment Engineering, Dalian Ocean University, Dalian, China
| | - Yumeng Wu
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
| | - Ying Liu
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Marine Science and Environment Engineering, Dalian Ocean University, Dalian, China
| | - Qi Liu
- Key Laboratory of Environment Controlled Aquaculture, Ministry of Education, Dalian, China
- College of Marine Science and Environment Engineering, Dalian Ocean University, Dalian, China
- *Correspondence: Hongwei Yan, ; Qi Liu,
| |
Collapse
|
36
|
Rousseau K, Prunet P, Dufour S. Special features of neuroendocrine interactions between stress and reproduction in teleosts. Gen Comp Endocrinol 2021; 300:113634. [PMID: 33045232 DOI: 10.1016/j.ygcen.2020.113634] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/10/2020] [Accepted: 09/20/2020] [Indexed: 02/08/2023]
Abstract
Stress and reproduction are both essential functions for vertebrate survival, ensuring on one side adaptative responses to environmental changes and potential life threats, and on the other side production of progeny. With more than 25,000 species, teleosts constitute the largest group of extant vertebrates, and exhibit a large diversity of life cycles, environmental conditions and regulatory processes. Interactions between stress and reproduction are a growing concern both for conservation of fish biodiversity in the frame of global changes and for the development of sustainability of aquaculture including fish welfare. In teleosts, as in other vertebrates, adverse effects of stress on reproduction have been largely documented and will be shortly overviewed. Unexpectedly, stress notably via cortisol, may also facilitate reproductive function in some teleost species in relation to their peculiar life cyles and this review will provide some examples. Our review will then mainly address the neuroendocrine axes involved in the control of stress and reproduction, namely the corticotropic and gonadotropic axes, as well as their interactions. After reporting some anatomo-functional specificities of the neuroendocrine systems in teleosts, we will describe the major actors of the corticotropic and gonadotropic axes at the brain-pituitary-peripheral glands (interrenals and gonads) levels, with a special focus on the impact of teleost-specific whole genome duplication (3R) on the number of paralogs and their potential differential functions. We will finally review the current knowledge on the neuroendocrine mechanisms of the various interactions between stress and reproduction at different levels of the two axes in teleosts in a comparative and evolutionary perspective.
Collapse
Affiliation(s)
- Karine Rousseau
- Muséum National d'Histoire Naturelle, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, SU, UCN, UA, Paris, France
| | - Patrick Prunet
- INRAE, UR1037, Laboratoire de Physiologie et de Génomique des Poissons (LPGP), Rennes, France
| | - Sylvie Dufour
- Muséum National d'Histoire Naturelle, Research Unit BOREA, Biology of Aquatic Organisms and Ecosystems, CNRS, IRD, SU, UCN, UA, Paris, France.
| |
Collapse
|
37
|
Castañeda-Cortés DC, Zhang J, Boan AF, Langlois VS, Fernandino JI. High temperature stress response is not sexually dimorphic at the whole-body level and is dependent on androgens to induce sex reversal. Gen Comp Endocrinol 2020; 299:113605. [PMID: 32866474 DOI: 10.1016/j.ygcen.2020.113605] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/14/2020] [Accepted: 08/24/2020] [Indexed: 12/31/2022]
Abstract
The understanding of the molecular and endocrine mechanisms behind environmentally-induced sex reversal in fish is of great importance in the context of predicting the potential effects of climate change, especially increasing temperature. Here, we demonstrate the global effects of high temperature on genome-wide transcription in medaka (Oryzias latipes) during early development. Interestingly, data analysis did not show sexual dimorphic changes, demonstrating that thermal stress is not dependent on genotypic sex. Additionally, our results revealed significant changes in several pathways under high temperature, such as stress response from brain, steroid biosynthesis, epigenetic mechanisms, and thyroid hormone biosynthesis, among others. These microarray data raised the question of what the exact molecular and hormonal mechanisms of action are for female-to-male sex reversal under high temperatures in fish. Complementary gene expression analysis revealed that androgen-related genes increase in females (XX) experiencing high water temperature. To test the involvement of androgens in thermal-induced sex reversal, an androgen antagonist was used to treat XX medaka under a high-temperature setup. Data clearly demonstrated failure of female-to-male sex reversal when androgen action is inhibited, corroborating the importance of androgens in environmentally-induced sex reversal.
Collapse
Affiliation(s)
- Diana C Castañeda-Cortés
- Laboratorio de Biología del Desarrollo - Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Argentina
| | - Jing Zhang
- Department of Diagnostic Imaging, Hospital for Sick Children, Toronto, ON, Canada; Neurosciences & Mental Health, SickKids Research Institute, Toronto, ON, Canada
| | - Agustín F Boan
- Laboratorio de Biología del Desarrollo - Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Argentina
| | - Valerie S Langlois
- Institut National de la Recherche Scientifique (INRS) - Centre Eau Terre Environnement, Quebec, Canada.
| | - Juan I Fernandino
- Laboratorio de Biología del Desarrollo - Instituto Tecnológico de Chascomús, INTECH (CONICET-UNSAM), Argentina.
| |
Collapse
|
38
|
Goikoetxea A, Damsteegt EL, Todd EV, McNaughton A, Gemmell NJ, Lokman PM. An in vitro ovarian explant culture system to examine sex change in a hermaphroditic fish. PeerJ 2020; 8:e10323. [PMID: 33240644 PMCID: PMC7666549 DOI: 10.7717/peerj.10323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022] Open
Abstract
Many teleost fishes undergo natural sex change, and elucidating the physiological and molecular controls of this process offers unique opportunities not only to develop methods of controlling sex in aquaculture settings, but to better understand vertebrate sexual development more broadly. Induction of sex change in some sequentially hermaphroditic or gonochoristic fish can be achieved in vivo through social manipulation, inhibition of aromatase activity, or steroid treatment. However, the induction of sex change in vitro has been largely unexplored. In this study, we established an in vitro culture system for ovarian explants in serum-free medium for a model sequential hermaphrodite, the New Zealand spotty wrasse (Notolabrus celidotus). This culture technique enabled evaluating the effect of various treatments with 17β-estradiol (E2), 11-ketotestosterone (11KT) or cortisol (CORT) on spotty wrasse ovarian architecture for 21 days. A quantitative approach to measuring the degree of ovarian atresia within histological images was also developed, using pixel-based machine learning software. Ovarian atresia likely due to culture was observed across all treatments including no-hormone controls, but was minimised with treatment of at least 10 ng/mL E2. Neither 11KT nor CORT administration induced proliferation of spermatogonia (i.e., sex change) in the cultured ovaries indicating culture beyond 21 days may be needed to induce sex change in vitro. The in vitro gonadal culture and analysis systems established here enable future studies investigating the paracrine role of sex steroids, glucocorticoids and a variety of other factors during gonadal sex change in fish.
Collapse
Affiliation(s)
| | - Erin L Damsteegt
- Department of Zoology, University of Otago, Dunedin, New Zealand
| | - Erica V Todd
- School of Life and Environmental Science, Deakin University, Geelong, Australia
| | | | - Neil J Gemmell
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - P Mark Lokman
- Department of Zoology, University of Otago, Dunedin, New Zealand
| |
Collapse
|
39
|
Zhang Z, Zhu B, Chen W, Ge W. Anti-Müllerian hormone (Amh/amh) plays dual roles in maintaining gonadal homeostasis and gametogenesis in zebrafish. Mol Cell Endocrinol 2020; 517:110963. [PMID: 32745576 DOI: 10.1016/j.mce.2020.110963] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 11/21/2022]
Abstract
Anti-Müllerian hormone (AMH/Amh) plays a role in gonadal differentiation and function across vertebrates. In zebrafish we demonstrated that Amh deficiency caused severe gonadal dysgenesis and dysfunction. The mutant gonads showed extreme hypertrophy with accumulation of early germ cells in both sexes, namely spermatogonia in the testis and primary growth oocytes in the ovary. In amh mutant females, the folliculogenesis was normal in young fish but receded progressively in adults, which was accompanied by progressive decrease in follicle-stimulating hormone (fshb) expression. Interestingly the expression of fshb increased in the pituitary of juvenile amh mutant males but decreased in adults. The upregulation of fshb in mutant male juveniles was likely one of the mechanisms for triggering gonadal hypergrowth, whereas the downregulation of fshb in adults might involve a negative feedback by gonadal inhibin. Further analysis using mutants of fshb and growth differentiation factor 9 (gdf9) provided evidence for a role of FSH in triggering ovarian hypertrophy in young female amh mutant as well. In summary, the present study provided comprehensive genetic evidence for dual roles of Amh in controlling zebrafish gonadal homeostasis and gametogenesis in both sexes. Amh suppresses proliferation or accumulation of early germ cells (spermatogonia in testis and primary growth oocytes in ovary) while promoting their exit to advanced stages, and its action may involve both endocrine and paracrine pathways.
Collapse
Affiliation(s)
- Zhiwei Zhang
- Centre of Reproduction, Development and Aging (CRDA), Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Bo Zhu
- Centre of Reproduction, Development and Aging (CRDA), Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Weiting Chen
- Centre of Reproduction, Development and Aging (CRDA), Faculty of Health Sciences, University of Macau, Taipa, Macau
| | - Wei Ge
- Centre of Reproduction, Development and Aging (CRDA), Faculty of Health Sciences, University of Macau, Taipa, Macau.
| |
Collapse
|
40
|
Wang Q, Hao X, Liu K, Feng B, Li S, Zhang Z, Tang L, Mahboob S, Shao C. Early response to heat stress in Chinese tongue sole (Cynoglossus semilaevis): performance of different sexes, candidate genes and networks. BMC Genomics 2020; 21:745. [PMID: 33109079 PMCID: PMC7590793 DOI: 10.1186/s12864-020-07157-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/15/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Temperature is known to affect living organisms and alter the expression of responsive genes, which affects a series of life processes, such as development, reproduction and metabolism. Several genes and gene families have been involved in high temperature responses, such as heat shock protein (hsp) family, Jumonji family and genes related to cortisol synthesis. Gonad is a vital organ related to the existence of a species. However, the comprehensive understanding of gonadal responses to environmental temperature is limited. RESULTS To explore the effects of environmental temperature on genes and gene networks in gonads, we performed acute heat treatment (48 h) on Chinese tongue sole (Cynoglossus semilaevis). Gonadal transcriptome analysis was conducted on females, pseudomales and males exposed to high (28 °C) and normal (22 °C) temperatures. A total of 1226.24 million clean reads were obtained from 18 libraries. Principal component analysis (PCA) and differentially expressed gene (DEG) analysis revealed different performance of sex responses to heat stress. There were 4565, 790 and 1117 specific genes altered their expression level in females, pseudomales and males, respectively. Of these, genes related to hsp gene family, cortisol synthesis and metabolism and epigenetic regulation were involved in early heat response. Furthermore, a total of 1048 DEGs were shared among females, pesudomales and males, which may represent the inherent difference between high and normal temperatures. Genes, such as eef1akmt3, eef1akmt4, pnmt and hsp family members, were found. CONCLUSIONS Our results depicted for the first time the gonadal gene expression under acute high temperature treatment in Chinese tongue sole. The findings may provide a clue for understanding the responses of genes and networks to environmental temperature.
Collapse
Affiliation(s)
- Qian Wang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China
| | - Xiancai Hao
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Kaiqiang Liu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China
| | - Bo Feng
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Shuo Li
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China
| | - Zhihua Zhang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Lili Tang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China
| | - Shahid Mahboob
- Department of Zoology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Changwei Shao
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Nanjing Road 106, Qingdao, 266071, China. .,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China.
| |
Collapse
|
41
|
Geffroy B, Wedekind C. Effects of global warming on sex ratios in fishes. JOURNAL OF FISH BIOLOGY 2020; 97:596-606. [PMID: 32524610 DOI: 10.1111/jfb.14429] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/18/2020] [Accepted: 06/07/2020] [Indexed: 06/11/2023]
Abstract
In fishes, sex is determined by genetics, the environment or an interaction of both. Temperature is among the most important environmental factors that can affect sex determination. As a consequence, changes in temperature at critical developmental stages can induce biases in primary sex ratios in some species. However, early sex ratios can also be biased by sex-specific tolerances to environmental stresses that may, in some cases, be amplified by changes in water temperature. Sex-specific reactions to environmental stress have been observed at early larval stages before gonad formation starts. It is therefore necessary to distinguish between temperature effects on sex determination, generally acting through the stress axis or epigenetic mechanisms, and temperature effects on sex-specific mortality. Both are likely to affect sex ratios and hence population dynamics. Moreover, in cases where temperature effects on sex determination lead to genotype-phenotype mismatches, long-term effects on population dynamics are possible, for example temperature-induced masculinization potentially leading to the loss of Y chromosomes or feminization to male-biased operational sex ratios in future generations. To date, most studies under controlled conditions conclude that if temperature affects sex ratios, elevated temperatures mostly lead to a male bias. The few studies that have been performed on wild populations seem to confirm this general trend. Recent findings suggest that transgenerational plasticity could mitigate the effects of warming on sex ratios in some populations.
Collapse
Affiliation(s)
- Benjamin Geffroy
- MARBEC, University of Montpellier, Ifremer, IRD, CNRS, Palavas-les-Flots, France
| | - Claus Wedekind
- Department of Ecology and Evolution, Biophore, University of Lausanne, Lausanne, Switzerland
| |
Collapse
|
42
|
Straková B, Rovatsos M, Kubička L, Kratochvíl L. Evolution of Sex Determination in Amniotes: Did Stress and Sequential Hermaphroditism Produce Environmental Determination? Bioessays 2020; 42:e2000050. [DOI: 10.1002/bies.202000050] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 07/15/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Barbora Straková
- Department of Ecology, Faculty of Science Charles University Viničná 7 Praha 2 12844 Czech Republic
| | - Michail Rovatsos
- Department of Ecology, Faculty of Science Charles University Viničná 7 Praha 2 12844 Czech Republic
| | - Lukáš Kubička
- Department of Ecology, Faculty of Science Charles University Viničná 7 Praha 2 12844 Czech Republic
| | - Lukáš Kratochvíl
- Department of Ecology, Faculty of Science Charles University Viničná 7 Praha 2 12844 Czech Republic
| |
Collapse
|
43
|
Hara S, Furukawa F, Mukai K, Yazawa T, Kitano T. Peroxisome proliferator-activated receptor alpha is involved in the temperature-induced sex differentiation of a vertebrate. Sci Rep 2020; 10:11672. [PMID: 32669596 PMCID: PMC7363821 DOI: 10.1038/s41598-020-68594-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 06/30/2020] [Indexed: 11/09/2022] Open
Abstract
Medaka (Oryzias latipes) is a teleost fish with an XX/XY sex determination system, similar to that of mammals. However, under high temperature conditions, XX medaka is masculinised by elevation of cortisol, the major teleost glucocorticoid. In this study, to identify novel factors in the gonads acting downstream from cortisol during sexual differentiation, we performed RNA sequencing (RNA-seq) analysis using the gonadal regions of larvae reared at normal temperature with and without cortisol, and at high temperature. The RNA-seq and real-time PCR analyses showed that expression of some peroxisome proliferator-activated receptor α (PPARα) signalling-targeted genes was increased by cortisol. PPARα agonist treatment induced masculinisation of XX medaka in some cases, and co-treatment of the agonist with cortisol further induced masculinisation, whereas treatment of pparaa knockout medaka with cortisol or the agonist did not induce masculinisation. This study provides the first evidence that PPARα is involved in environmental sex determination in vertebrates.
Collapse
Affiliation(s)
- Seiji Hara
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Fumiya Furukawa
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Koki Mukai
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Takashi Yazawa
- Department of Biochemistry, Asahikawa Medical University, Asahikawa, Hokkaido, 078-8510, Japan
| | - Takeshi Kitano
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan.
| |
Collapse
|
44
|
Rajakumar A, Senthilkumaran B. Steroidogenesis and its regulation in teleost-a review. FISH PHYSIOLOGY AND BIOCHEMISTRY 2020; 46:803-818. [PMID: 31940121 DOI: 10.1007/s10695-019-00752-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 12/23/2019] [Indexed: 06/10/2023]
Abstract
Steroid hormones modulate several important biological processes like metabolism, stress response, and reproduction. Steroidogenesis drives reproductive function wherein development and differentiation of undifferentiated gonads into testis or ovary, and their growth and maturation, are regulated. Steroidogenesis occurs in gonadal and non-gonadal tissues like head kidney, liver, intestine, and adipose tissue in teleosts. This process is regulated differently through multi-level modulation of promoter motif transcription factor regulation of steroidogenic enzyme genes to ultimately control enzyme activity and turnover. In view of this, understanding teleostean steroidogenesis provides major inputs for technological innovation of pisciculture. Unlike higher vertebrates, steroidal intermediates and shift in steroidogenesis is critical for gamete maturation in teleosts, more essentially oogenesis. Considering these characteristics, this review highlights the promoter regulation of steroidogenic enzyme genes by several transcription factors that are involved in teleostean steroidogenesis. It also addresses different methodologies involved in promoter regulation studies together with glucocorticoids and androgen relationship with reference to teleosts.
Collapse
Affiliation(s)
- Anbazhagan Rajakumar
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, P.O. Central University, Hyderabad, Telangana, 500046, India
- Present Address: Section on Molecular Endocrinology, National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, 20892,, USA
| | - Balasubramanian Senthilkumaran
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, P.O. Central University, Hyderabad, Telangana, 500046, India.
| |
Collapse
|
45
|
Servili A, Canario AVM, Mouchel O, Muñoz-Cueto JA. Climate change impacts on fish reproduction are mediated at multiple levels of the brain-pituitary-gonad axis. Gen Comp Endocrinol 2020; 291:113439. [PMID: 32061640 DOI: 10.1016/j.ygcen.2020.113439] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 02/11/2020] [Accepted: 02/11/2020] [Indexed: 11/30/2022]
Abstract
Anthropogenic emissions of carbon dioxide in the atmosphere have generated rapid variations in atmospheric composition which drives major climate changes. Climate change related effects include changes in physico-chemical proprieties of sea and freshwater, such as variations in water temperature, salinity, pH/pCO2 and oxygen content, which can impact fish critical physiological functions including reproduction. In this context, the main aim of the present review is to discuss how climate change related effects (variation in water temperature and salinity, increases in duration and frequency of hypoxia events, water acidification) would impact reproduction by affecting the neuroendocrine axis (brain-pituitary-gonad axis). Variations in temperature and photoperiod regimes are known to strongly affect sex differentiation and the timing and phenology of spawning period in several fish species. Temperature mainly acts at the level of gonad by interfering with steroidogenesis, (notably on gonadal aromatase activity) and gametogenesis. Temperature is also directly involved in the quality of released gametes and embryos development. Changes in salinity or water acidification are especially associated with reduction of sperm quality and reproductive output. Hypoxia events are able to interact with gonad steroidogenesis by acting on the steroids precursor cholesterol availability or directly on aromatase action, with an impact on the quality of gametes and reproductive success. Climate change related effects on water parameters likely influence also the reproductive behavior of fish. Although the precise mechanisms underlying the regulation of these effects are not always understood, in this review we discuss different hypothesis and propose future research perspectives.
Collapse
Affiliation(s)
- Arianna Servili
- Ifremer, Univ Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France.
| | - Adelino V M Canario
- Comparative Endocrinology and Integrative Biology, Centre of Marine Sciences, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Olivier Mouchel
- Ifremer, Univ Brest, CNRS, IRD, LEMAR, F-29280 Plouzane, France
| | - José Antonio Muñoz-Cueto
- Faculty of Marine and Environmental Sciences, INMAR, Department of Biology, University of Cádiz, Marine Campus of International Excellence (CEIMAR), Agrifood Campus of International Excellence (ceiA3) and European University of the Seas (SEA-EU), E11510 Puerto Real, Spain
| |
Collapse
|
46
|
Kuo CE, Chen YM. Characterization of gonadal glucocorticoid-induced leucine zipper (GILZ) protein expression during sex change in the protogynous orange-spotted grouper, Epinephelus coioides. Comp Biochem Physiol B Biochem Mol Biol 2020; 242:110416. [PMID: 32017989 DOI: 10.1016/j.cbpb.2020.110416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/23/2020] [Accepted: 01/30/2020] [Indexed: 11/27/2022]
Abstract
Steroid hormones have been proven as a key drive of sex change in sequentially hermaphroditic organisms. However, the upstream mechanism of sex steroid hormones regulation that affect sex change remain unknown. The main glucocorticoid in teleost fish is cortisol, which both regulates steroidogenesis and has antistress action. Thus, cortisol might be one of the prime factors in sex change. In this study, the glucocorticoid-induced leucine zipper (GILZ) gene, was proven to have a dramatic effect in orange-spotted groupers (Epinephelus coioides) during sex change at the early stage of gonadal transition. The specific action of the GILZ protein is at the pouch-shaped proliferative spermatogonia instead of the degenerative oocyte at the onset of sex change. Immunohistochemical (IHC) evidence revealed that GILZ performs intensively at undifferentiated spermatogonia in the early testis stage. These results imply that cortisol provokes a rise of GILZ through regulation caused by steroid hormones leading to sex change.
Collapse
Affiliation(s)
- Cham-En Kuo
- Department of Nursing, Tzu Hui Institute of Technology, Pingtung 92641, Taiwan, ROC
| | - Young-Mao Chen
- Bachelor Degree Program in Marine Biotechnology, College of Life Sciences, National Taiwan Ocean University, Keelung 20224, Taiwan, ROC; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan, ROC.
| |
Collapse
|
47
|
Faltermann S, Hettich T, Küng N, Fent K. Effects of the glucocorticoid clobetasol propionate and its mixture with cortisol and different class steroids in adult female zebrafish. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2020; 218:105372. [PMID: 31812088 DOI: 10.1016/j.aquatox.2019.105372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/13/2019] [Accepted: 11/21/2019] [Indexed: 05/27/2023]
Abstract
Ecotoxicological effects of glucocorticoids and steroid mixtures in the environment are not sufficiently known. Here we investigate effects of 11-14 days exposure of female zebrafish to the glucocorticoid clobetasol propionate (Clo), cortisol (Cs), their mixture and mixtures with five different class steroids (Clo + triamcinolone + estradiol + androstenedione + progesterone) in liver, brain and gonads. Cs showed little activity, while Clo reduced the condition factor at 0.57 and 6.35 μg/L. Clo induced differential expression of genes in the liver at 0.07-6.35 μg/L, which were related to circadian rhythm (per1, nr1d2), glucose metabolism (g6pca, pepck1), immune system response (fkbp 5, socs3, gilz), nuclear steroid receptors (pgr and pxr), steroidogeneses and steroid metabolism (hsd11b2, cyp2k22). Clo caused strong transcriptional down-regulation of vtg. Similar upregulations occurred in the brain for pepck1, fkbp5, socs3, gilz, hsd11b2, and nr1d2a, while cyp19b was down-regulated. Effects of Clo + Cs mixtures were similar to Clo alone. Transcriptional alterations were different in mixtures of five steroids with no alteration of vtg in the liver due to counteraction of Clo and estradiol. Induction of fkbp5 (brain) and sult2st3 (liver) and downregulation of cyp19a (gonads) occurred at 1 μg/L. Histological effects of the five steroids mixture in gonads were characterized by a decrease of mature oocytes. Our data indicate that effects of steroids of different classes sum up to an overall joint effect driven by the most potent steroid Clo.
Collapse
Affiliation(s)
- Susanne Faltermann
- University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Hofackerstrasse 30, CH-4132, Muttenz, Switzerland
| | - Timm Hettich
- University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Hofackerstrasse 30, CH-4132, Muttenz, Switzerland
| | - Noemi Küng
- University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Hofackerstrasse 30, CH-4132, Muttenz, Switzerland
| | - Karl Fent
- University of Applied Sciences and Arts Northwestern Switzerland, School of Life Sciences, Hofackerstrasse 30, CH-4132, Muttenz, Switzerland; Swiss Federal Institute of Technology (ETH Zürich), Institute of Biogeochemistry and Pollution Dynamics, Department of Environmental Systems Science, CH-8092, Zürich, Switzerland.
| |
Collapse
|
48
|
Chen J, Peng C, Yu Z, Xiao L, Yu Q, Li S, Zhang H, Lin H, Zhang Y. The Administration of Cortisol Induces Female-to-Male Sex Change in the Protogynous Orange-Spotted Grouper, Epinephelus coioides. Front Endocrinol (Lausanne) 2020; 11:12. [PMID: 32082256 PMCID: PMC7005586 DOI: 10.3389/fendo.2020.00012] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 01/08/2020] [Indexed: 11/13/2022] Open
Abstract
In this study, we injected cortisol into the protogynous orange-spotted grouper (Epinephelus coioides) to investigate the role of this hormone in sex change. Following injection, we evaluated gonadal changes, serum levels of steroid hormones, and sex-related gene expression during the processes of cortisol-induced sex change and cortisol withdrawal in the orange-spotted grouper. Cortisol treatment caused the degeneration of oocytes and induced sex change in a dose-dependent manner. Over the long-term, we observed a significant increase in serum 11-ketotestosterone (11-KT) levels in all cortisol-treated groups, although levels of 17β-estradiol did not change significantly. Consistent with the elevation of serum 11-KT levels, the expression of genes related to testicular development was also significantly up-regulated in the cortisol-treated groups. Based on our results, we propose that cortisol may trigger masculinization by inducing the synthesis of 11-KT and by directly activating the expression of sex-related genes. Furthermore, we found that cortisol-induced sex change was not permanent and could be reversed after the withdrawal of cortisol treatment.
Collapse
Affiliation(s)
- Jiaxing Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Cheng Peng
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou, China
| | - Zeshu Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ling Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qi Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shuisheng Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Fisheries College, Guangdong Ocean University, Zhanjiang, China
- *Correspondence: Shuisheng Li
| | - Haifa Zhang
- Marine Fisheries Development Center of Guangdong Province, Huizhou, China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Fisheries Development Center of Guangdong Province, Huizhou, China
- Yong Zhang
| |
Collapse
|
49
|
Wang Q, Liu K, Feng B, Zhang Z, Wang R, Tang L, Li W, Li Q, Piferrer F, Shao C. Transcriptome of Gonads From High Temperature Induced Sex Reversal During Sex Determination and Differentiation in Chinese Tongue Sole, Cynoglossus semilaevis. Front Genet 2019; 10:1128. [PMID: 31824559 PMCID: PMC6882949 DOI: 10.3389/fgene.2019.01128] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 10/17/2019] [Indexed: 01/10/2023] Open
Abstract
The sex of Chinese tongue sole (Cynoglossus semilaevis) is determined by both genetic sex determination (GSD) and environmental sex determination (ESD), making it an ideal model to study the relationship between sex-determination and temperature. In the present study, transcriptomes of undifferentiated gonads from genetic females and males, as well as differentiated gonads from males, females, and pseudomales under high and normal temperature treatments were generated for comparative transcriptomic analysis. A mean of 68.24 M high-quality clean reads was obtained for each library. Differentially expressed genes (DEGs) between different sexes and environmental treatments were identified, revealing that the heat shock protein gene family was involved in the high temperature induced sex reversal. The Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways that were enriched in pseudomale and genetic female comparison included neuroactive ligand-receptor interaction, cortisol synthesis and secretion, and steroid hormone biosynthesis. Furthermore, weighted gene co-expression network analyses were conducted on all samples, and two modules were positive correlated with pseudomale under high temperature. An illustrated protein-protein interaction map of the module identified a hub gene, hsc70. These findings provide insights into the genetic network that is involved in sex determination and sexual differentiation, and improve our understanding of genes involved in sex reversal under high temperature.
Collapse
Affiliation(s)
- Qian Wang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Kaiqiang Liu
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Bo Feng
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Zhihua Zhang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Renkai Wang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Lili Tang
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Wensheng Li
- Laizhou Mingbo Aquatic Co., Ltd., Laizhou, China
| | - Qiye Li
- BGI-Shenzhen, Shenzhen, China
| | - Francesc Piferrer
- Institut de Ciències del Mar (ICM), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain
| | - Changwei Shao
- Key Lab of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| |
Collapse
|
50
|
Castro JP, Hattori RS, Yoshinaga TT, Silva DMZDA, Ruiz-Ruano FJ, Foresti F, Santos MH, de Almeida MC, Moreira-Filho O, Artoni RF. Differential Expression of Genes Related to Sexual Determination Can Modify the Reproductive Cycle of Astyanax scabripinnis (Characiformes: Characidae) in B Chromosome Carrier Individuals. Genes (Basel) 2019; 10:E909. [PMID: 31717315 PMCID: PMC6896079 DOI: 10.3390/genes10110909] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/01/2019] [Accepted: 11/04/2019] [Indexed: 01/09/2023] Open
Abstract
The species complex Astyanax scabripinnis is one of the most studied with respect to origin, distribution, and frequency of B chromosomes, and is considered a model organism for evolutionary studies. Research using population inferences about the occurrence and frequency of the B chromosome shows seasonal variation between sexes, which is associated with the presence of this supernumerary element. We hypothesized that the B chromosome could influence the sex ratio of these animals. Based on this assumption, the present work aimed to investigate if differences exist among levels of gene expression with qRT-PCR of the amh (associated with testicular differentiation) and foxl2a (associated with ovarian differentiation) genes between B-carrier and non-B-carrier individuals. The results showed that for the amh gene, the difference in expression between animals with B chromosomes was not accentuated compared to that in animals without this chromosome. Expression of foxl2a in B-carrier females, however, was reduced by 73.56% compared to females that lacked the B chromosome. Males had no difference in expression of the amh and foxl2a genes between carriers and non-carriers of the B chromosome. Results indicate that the presence of B chromosomes is correlated with the differential expression of sex-associated genes. An analysis of these results integrated with data from other studies on the reproductive cycle in the same species reveals that this difference in expression may be expanding the reproductive cycle of the species.
Collapse
Affiliation(s)
- Jonathan Pena Castro
- Departamento de Genética e Evolução, Programa de Pós-Graduação em Biologia Evolutiva e Genética Molecular, Universidade Federal de São Carlos, Rodovia Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil; (O.M.-F.); (R.F.A.)
| | - Ricardo Shohei Hattori
- Estação Experimental de Salmonicultura de Campos do Jordão, UPD-CJ (APTA/SAA), Campos do Jordão, São Paulo, SP 12460-000, Brazil;
| | - Túlio Teruo Yoshinaga
- Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Departamento de Cirurgia, Universidade de São Paulo, Butantã, Rua Professor Orlando Marque Paiva, São Paulo, SP 05508-270, Brazil;
| | - Duílio Mazzoni Zerbinato de Andrade Silva
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Rubião Junior, s/n, Botucatu, SP 18618-970, Brazil; (D.M.Z.d.A.S.); (F.F.)
| | - Francisco J. Ruiz-Ruano
- Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, SE-752 36 Uppsala, Sweden;
| | - Fausto Foresti
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Distrito de Rubião Junior, s/n, Botucatu, SP 18618-970, Brazil; (D.M.Z.d.A.S.); (F.F.)
| | - Mateus Henrique Santos
- Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Avenida Carlos Cavalcanti, 4748, Ponta Grossa, PR 84030-900, Brazil; (M.H.S.); (M.C.d.A.)
| | - Mara Cristina de Almeida
- Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Avenida Carlos Cavalcanti, 4748, Ponta Grossa, PR 84030-900, Brazil; (M.H.S.); (M.C.d.A.)
| | - Orlando Moreira-Filho
- Departamento de Genética e Evolução, Programa de Pós-Graduação em Biologia Evolutiva e Genética Molecular, Universidade Federal de São Carlos, Rodovia Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil; (O.M.-F.); (R.F.A.)
| | - Roberto Ferreira Artoni
- Departamento de Genética e Evolução, Programa de Pós-Graduação em Biologia Evolutiva e Genética Molecular, Universidade Federal de São Carlos, Rodovia Washington Luis, Km 235, Monjolinho, São Carlos, SP 13565-905, Brazil; (O.M.-F.); (R.F.A.)
- Departamento de Biologia Estrutural, Molecular e Genética, Programa de Pós-Graduação em Biologia Evolutiva, Universidade Estadual de Ponta Grossa, Avenida Carlos Cavalcanti, 4748, Ponta Grossa, PR 84030-900, Brazil; (M.H.S.); (M.C.d.A.)
| |
Collapse
|