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Sun D, Wang S, Wang C, Zou J. Transcriptomics reveals that NAD(P)H affects the development of the Zig-zag eel (Mastacembelus armatus ♀) × Spiny eel (Sinobdella sinensis ♂) hybrid offspring leading to low hatching rates. Anim Reprod Sci 2024; 268:107561. [PMID: 39004014 DOI: 10.1016/j.anireprosci.2024.107561] [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: 04/20/2024] [Revised: 06/17/2024] [Accepted: 07/07/2024] [Indexed: 07/16/2024]
Abstract
Zig-zag eel (Mastacembelus armatus (2 n = 48)) and Spiny eel (Sinobdella sinensis (2 n = 48)) are two species of the Mastacembelidae family commonly found in southern China. Hybridization between the two has a very high deformity rate and a very low hatching rate. In order to investigate the reasons for this, the first hybridization between M. armatus and S. sinensis was carried out using artificial insemination, and the embryonic development of the hybrid offspring was examined using microphotography, and the malformations of the hybrid offspring were investigated by transcriptomics. The experiments showed that the average egg production was 4265.7 ± 322.94 (Mean ± SD), the average fertilization rate of hybrid offspring was 98.67 ± 0.58 % (Mean ± SD), the hatching rate was 12.06 ± 3.44 % (Mean ± SD), the deformity rate was 98.15 ± 3.21 % (Mean ± SD), and the embryonic development successively went through the five main stages of fertilized egg, egg cleavage, embryo formation, organogenesis, and exertion of membranes. Transcriptomics showed that the expression of NAD(P)H-related enzyme activity DEGs was increased, and many DEGs related to cell signaling molecule transmission and metabolic regulation are enriched in KEGG pathways, such as IL-17 signaling pathway, Osteoclast differentiation, TNF signaling pathway and MAPK signaling pathway. etc. The major types of DEGs corresponded to those coding for proteins. This study suggests that the high malformation rate in hybrid offspring may be caused by impaired synthesis of proteins during embryonic development.
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Affiliation(s)
- Di Sun
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Shaodan Wang
- College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chong Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Jixing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China.
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Castro PL, Ferraz ALJ, Patil JG, Ribeiro RP. Use of melatonin as an inhibitor of apoptotic process for cryopreservation of zebrafish (Danio rerio) embryos. BRAZ J BIOL 2021; 82:e241081. [PMID: 34105654 DOI: 10.1590/1519-6984.241081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/18/2020] [Indexed: 01/31/2023] Open
Abstract
This study investigated the use of melatonin to arrest the effects of apoptosis in vitrified zebrafish (D. rerio) embryos. Dechorionated embryos at 22-24 somite-stage were divided (n = 60/treatment) into a non-vitrified (Control Group, 0 M melatonin) and vitrified treatments with 0 M (T1), 1 µM (T2) and 1 mM of melatonin (T3). For vitrified treatments, a solution methanol/propylene glycol based was used and the embryos stored in -196 °C for a week. After thaw, survival rate, scanning electron microscopy, expression of anti (bcl-2) and pro-apoptotic (bax/caspase-3) genes, reactive oxygen species (ROS) formation and DNA fragmentation analyses were performed. No live embryos were obtained from vitrified treatments, observing a rapid degeneration immediately after thawing, with the vitelline layer rupture and leakage of its content, followed by breakdown of epithelial cells and melanisation of the tissue. Regarding the apoptotic process, T3 had the highest relative gene expression, for the three genes (P < 0.05) furthermore, T2 had similar expression of pro-apoptotic genes to CG (P < 0.05). ROS formation revealed that CG presented lower percentage of embryo surface area affected (3.80 ± 0.40%) (P < 0.05), in contrast, no differences were found among the other groups. T1 was most significantly (P < 0.05) damaged by DNA fragmentation. The vitrified groups with melatonin had similar damage levels of CG (P > 0.05). The inclusion of 1 µM of melatonin in the vitrifying solution, countered the effects of apoptotic process in post-thaw embryos, suggesting its utility in cryopreserving fish embryos.
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Affiliation(s)
- P L Castro
- Universidade Estadual de Maringá - UEM, Departamento de Zootecnia, Maringá, PR, Brasil
| | - A L J Ferraz
- Universidade Estadual de Mato Grosso do Sul - UEMS, Aquidauana, MS, Brasil
| | - J G Patil
- Fisheries and Aquaculture Center, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia
| | - R P Ribeiro
- Universidade Estadual de Maringá - UEM, Departamento de Zootecnia, Maringá, PR, Brasil
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Macoretta CL, Miranda LA. Cooling of Siamese fighting fish Betta splendens (Teleostei, Osphronemidae) embryos at low temperatures. Cryobiology 2021; 101:78-86. [PMID: 34081926 DOI: 10.1016/j.cryobiol.2021.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 04/15/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023]
Abstract
The Siamese fighting fish (Betta splendens) has great importance as an ornamental aquarium fish as well as laboratory model species. Due to its rapid development, a cooling-embryo protocol could provide some advantages in their transportation, embryonic synchronization, and optimization of hatcheries. In this context, this work aimed to develop a protocol to storage B. splendens embryos at two temperatures (5 and 14 °C), testing three cryoprotective solutions (S1: 0.5 M sucrose, 1.5 M methanol; S2: 0.25 M sucrose, 0.75 M methanol; and S3: 0.125 M sucrose, 0.375 M methanol) and evaluating the quality of the larvae obtained. Moreover, a method to isolate the embryos from the bubble nest constructed by the male and to incubate them without parental care was applied in this study. The cooling assays were done using embryos of 24-h-post-fertilization at 26 °C and the results demonstrated that it is possible to store these embryos deprived of cryoprotectants at 5 °C for at least 6-h without negative effects. Meanwhile, S2 and S3 were the most suitable solutions for its storage for 9-h at 5 °C or 24-h at 14 °C, obtaining 77% hatching and 52% normal larvae in the first case or 88% hatching and 81% larvae with mild abnormalities in the second one. Indeed, type and frequency of larval abnormalities were evaluated and, remarkably, a partial recovery was described on malformed larvae from embryo cooled at 14 °C. Finally, this work is the first report about the cooling of B. splendens embryos and establishes the conditions for further studies on this field with this species.
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Affiliation(s)
- Christian Leandro Macoretta
- Laboratorio de Ictiofisiología y Acuicultura, Instituto Tecnológico de Chascomús, (CONICET-UNSAM), Intendente Marino Km. 8.200, B7130IWA, Chascomús, Buenos Aires, Argentina
| | - Leandro Andrés Miranda
- Laboratorio de Ictiofisiología y Acuicultura, Instituto Tecnológico de Chascomús, (CONICET-UNSAM), Intendente Marino Km. 8.200, B7130IWA, Chascomús, Buenos Aires, Argentina.
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Cooling of pejerrey Odontesthes bonariensis (Teleostei, Atherinidae) embryos at sub-zero temperatures. Theriogenology 2020; 149:123-130. [PMID: 32259749 DOI: 10.1016/j.theriogenology.2020.03.027] [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: 11/12/2019] [Revised: 03/16/2020] [Accepted: 03/21/2020] [Indexed: 11/23/2022]
Abstract
Pejerrey fish (Odontesthes bonariensis) is a seasonal multiple spawner with great economic importance and an adequate species for Aquaculture. For these reasons, it is necessary to apply biotechnologies to optimize its reproduction in captivity. In this context, the aim of this work was to develop a cooling protocol for pejerrey embryos at sub-zero temperatures. Two cryoprotective solutions (CSs: S1 and S2), two cooling curves (a fast and a slow one) and two storage temperatures (-14 and -20 °C) were evaluated for 1 h. High percentages of embryo survival (80-100%) were obtained in all cases. In particular, for cooling at -14 °C, the most suitable protocol was the slow temperature decrease in combination with S1 (2.5 M methanol, 1.4 M Me2SO, 0.3 M sucrose, and 0.08 M NaCl). The hatching rate (86.67 ± 11.55%) and the larval survival observed did not differ from those of the control group, and about 30% of normal-looking larvae were obtained. Besides, the slow cooling was also the best way to reach -20 °C, obtaining a hatching rate of around 60%. However, all the larvae had different kind of malformations. Finally, in order to improve the results obtained at -20 °C, the CSs were incorporated into the embryos by microinjection. In this case, it was observed that the most convenient combination was the microinjection of S2 (same composition as S1 but without Me2SO) in the perivitelline space followed by rapid cooling. Although the hatching rate was not improved (67.93 ± 8.31%), the microinjection allowed to obtain at least 4.5% normal-looking larvae. These results showed that the cooling of pejerrey embryos at zub-zero temperatures was feasible. Moreover, the microinjection of cryoprotectants within the pejerrey O.bonariensis embryos was employed for the first time in this species.
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Hosseini S, Brenig B, Tetens J, Sharifi AR. Phenotypic plasticity induced using high ambient temperature during embryogenesis in domesticated zebrafish, Danio rerio. Reprod Domest Anim 2018; 54:435-444. [PMID: 30472784 PMCID: PMC7379563 DOI: 10.1111/rda.13382] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 11/01/2018] [Indexed: 12/16/2022]
Abstract
Ambient temperature during early stages of life has a substantial effect on physiological processes, eliciting phenotypic plasticity during zebrafish developmental stages. Zebrafish are known to possess a noteworthy ability to modify their phenotype in dependence of environmental factors. However, there is a poor understanding of the effects of temperature during embryogenesis, which influences the biological functions such as survival ability and masculinization in later developmental stages. Since the middle embryonic phase (pharyngula period) is genetically the most conserved stage in embryogenesis, it is very susceptible to embryonic lethality in developmental processes of vertebrates. Here, we tested the effect of transient perturbations (heat shock) during early development (5–24 hr post‐fertilization; hpf) at 35°C compared to control group at 28°C, on survival ability of zebrafish to study the embryonic and post‐embryonic mortality. We studied the variation of heat‐induced masculinization among and across the families in response to high temperature. Furthermore, morphometric traits of adult zebrafish at different developmental time points were measured in order to estimate the temperature × sex interaction effect. We found the highest embryonic mortality around the gastrula and segmentation periods in both experimental groups, with significantly lower survival ability in the temperature‐treated group (73.30% ± 0.58% vs. 70.19% ± 0.57%, respectively). A higher hatching success was observed in the control group (71.08% ± 0.61%) compared to the heat‐induced group (67.95% ± 0.60%). A distinct reduction in survival ability was also observed in both experimental groups during the first two weeks after hatching, followed by a reduced level of changes thereafter. We found sex ratio imbalances across all families, with 25.2% more males under temperature treatment. Our study on growth performance has shown a positive effect of increased temperature on growth plasticity, with a greater impact on female fish in response to high ambient temperature.
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Affiliation(s)
- Shahrbanou Hosseini
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Bertram Brenig
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany.,Institute of Veterinary Medicine, University of Goettingen, Goettingen, Germany
| | - Jens Tetens
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
| | - Ahmad Reza Sharifi
- Department of Animal Sciences, University of Goettingen, Goettingen, Germany.,Center for Integrated Breeding Research, University of Goettingen, Goettingen, Germany
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