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Eslamizadeh E, Mabudi H, Roomiani L, Javaheri Baboli M, Chelehmal Dezfulnejad M. Effects of thyroxin and luteinizing hormone releasing hormone on reproductive physiology of Rohu (Labeo rohita): Insights into spawning performance, oocyte maturation, steroidogenesis, and follicular development genes. Anim Reprod Sci 2024; 267:107542. [PMID: 38954933 DOI: 10.1016/j.anireprosci.2024.107542] [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: 03/14/2024] [Revised: 06/14/2024] [Accepted: 06/20/2024] [Indexed: 07/04/2024]
Abstract
As the global aquaculture industry grows, attention is increasingly turning towards assisted reproductive technologies. In this study, we examined the impact of D-Ala6, Pro9-Net-mGnRH (LHRHa: 0.4 mL/kg) and two doses (1 and 10 μg/kg fish) of thyroxin (T4) administered through a single injection on oocyte maturation, spawning performance, sex steroid hormone levels, as well as the expression of genes related to steroidogenesis and follicle development (ZP2, Cyp19a1a and SF-1) in Rohu (Labeo rohita). The study found that untreated female Rohu did not spawn, while those treated with LHRHa and thyroxin ovulated and spawned across a hormonal gradient. The highest spawning success was observed with a thyroxin dosage of 10 µg/kg (no significant change with a dose of 1 μg/kg), and female latency period decreased with increasing dosage. Additionally, females treated with thyroxin exhibited significantly higher fecundity than other experimental groups. Treatment with LHRHa and two doses of thyroxin significantly increased the gonadal somatic index compared to the control and sham groups. Hormonal treatment also led to increased fertilization success, hatching rate, and larval survival. At 12 h post-injection, females treated with thyroxin exhibited a significant decline in estradiol levels and expression of Zp2, Cyp19a1a, and SF-1 compared to other experimental groups. Levels of DHP significantly increased across the hormonal gradient. Histological analyses supported a steroidogenic shift, where oocyte maturation was accelerated by hormone administration, particularly with both doses of thyroxin. In conclusion, the findings suggest that thyroxin is a recommended treatment for assisted reproduction of Rohu due to its ability to induce spawning, increase fecundity and improve larval survival.
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Affiliation(s)
- Ehsan Eslamizadeh
- Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - Hadideh Mabudi
- Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
| | - Laleh Roomiani
- Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | | | - Mojdeh Chelehmal Dezfulnejad
- Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran; Aquaculture Research Center, Department of Fisheries, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
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Omony JB, Biran J, Kahwa D, Aizen J, Golan M, Nyatia E, Levavi-Sivan B, Rutaisire J. Cloning of gonadotropin Gph-alpha, FSH-beta and LH-beta subunits and seasonal profiles of steroid hormones in wild-caught Nile perch, Lates niloticus. Gen Comp Endocrinol 2022; 323-324:114035. [PMID: 35395227 DOI: 10.1016/j.ygcen.2022.114035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 11/25/2022]
Abstract
The Nile perch (np; Lates niloticus) is a freshwater teleost species with a potential for aquaculture in freshwater surroundings. However, wild-caught breeders have persistently failed to spawn spontaneously in captivity. Cloning of the gonadotropin subunits and analysing seasonal variation in reproductive hormone levels for a 1-year period were done to gain knowledge on the physiological basis underlying the reproductive biology of np. The β-follicle-stimulating hormone (FSH-β) and β-luteinizing hormone (LH-β) subunits and their common α-glycoprotein (Gph-α) subunit were cloned using 3' and 5' RACE-PCR. The nucleotide sequences of the npgph-α, npfsh-β, and nplh-β subunits were 664, 580 and 675 nucleotides in length, encoding peptides of 124, 120 and 148 amino acids, respectively. The deduced amino acid sequence of each mature subunit showed high similarity with its counterparts in other teleost. Sequence analysis showed that npFSH-β is more similar to higher vertebrate FSH-βs than to higher vertebrate LH-βs. Heterologous immunoassay was calibrated to analyse pituitary LH levels. While the LH immunoassay showed parallelism of npLH with that of tilapia (ta), no parallelism for FSH was found. Levels of pituitary LH were higher in females at gonadal stages of vitellogenic oocytes, mature secondary oocytes and mature tertiary oocytes with migrating nucleus than in pre-vitellogenic oocytes and early and late perinucleolus oocytes. Using competitive steroid ELISA, variations in the levels of the steroid hormones 11-ketotestosterone (11-KT) in males and E2 in females were characterized in relation to month and reproductive index of Nile perch. Our findings show that in females, gonadosomatic index and plasma E2 were highly correlated (R2 = 0.699, n = 172) and peaked from September to November while in males, the gonadosomatic index and plasma 11-KT peaked from October to November. In female fish, both steroid hormones were detected in the plasma but greatly varied in concentrations. E2 in particular, increased with the developmental stage of the gonads. The levels of steroid hormones, E2 and 11-KT in females and males respectively increased with fish size (total lengths) and suggest that females mature at a body length of 40-59 cm than their counter part males that mature at a total length of 60-70 cm. Taken together, we describe seasonal endocrine differences in wild-caught adult Nile perch which could potentially be exploited to manipulate the reproductive axis in cultured breeders.
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Affiliation(s)
- John Bosco Omony
- Department of Biology, Faculty of Science, Muni University, P.O. Box 725, Arua, Uganda.
| | - Jakob Biran
- Department of Poultry and Aquaculture, Agricultural Research Organization-Volcani Center, Rishon Letzion 7528809, Israel.
| | - David Kahwa
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Joseph Aizen
- The Faculty of Marine Science, Ruppin Academic Centre, Michmoret 4029700, Israel.
| | - Matan Golan
- Department of Poultry and Aquaculture, Agricultural Research Organization-Volcani Center, Rishon Letzion 7528809, Israel.
| | - Edward Nyatia
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Berta Levavi-Sivan
- Department of Animal Sciences, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel.
| | - Justus Rutaisire
- Directorate of Corporate Services, National Agricultural Research Organization (NARO) Secretariat (NAROSEC), Plot 1-3 Lugard Avenue, P.O Box 295, Entebbe, Uganda
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Domestication of Marine Fish Species: Update and Perspectives. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2015. [DOI: 10.3390/jmse3041227] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pham HQ, Arukwe A. Effects of dopamine 2 receptor antagonist on sex steroid levels, oocyte maturation and spawning performances in Waigieu seaperch (Psammoperca waigiensis). FISH PHYSIOLOGY AND BIOCHEMISTRY 2013; 39:403-411. [PMID: 22911104 DOI: 10.1007/s10695-012-9708-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Accepted: 08/11/2012] [Indexed: 06/01/2023]
Abstract
The present study has investigated the effects of domperidone (DOM), a dopamine 2 receptor antagonist, on plasma steroid hormone levels and reproductive performances of a female tropical marine finfish, Waigieu seaperch (Psammoperca waigiensis), with potential for cultivation in Vietnam. We showed that oral treatment of DOM during early stage of the reproductive cycle had no significant effects on the maturation and reproductive performances of the female fish, while plasma steroid hormone (testosterone (T), 11-ketotestosterone (11-KT), 17β-estradiol (E2) and progesterone (P)) levels were modulated based on month, DOM dose and the individual hormones measured. Overall, these findings suggest that DOM may not be needed for the induction of maturation and spawning of this species under aquaculture conditions. The data in the present study are significant in highlighting practical efforts for reducing drug use, production costs and for a sustainable aquaculture in a developing country such as Vietnam.
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Affiliation(s)
- Hung Quoc Pham
- Faculty of Aquaculture, Nha Trang University, Nha Trang City, Vietnam
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