Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar)
Photoperiod is believed to regulate growth in fish, although the mechanism involved is still unclear. In this paper, we report a relationship between leptin-receptor A1 (AsLRa1), melatonin-receptor (AsMR) and photoperiod in Atlantic salmon. Atlantic salmon (mean weight 1071.70 ± 155.54 g) were reare...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-05-01
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| Series: | Animal Cells and Systems |
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| Online Access: | http://dx.doi.org/10.1080/19768354.2019.1595138 |
| _version_ | 1818218886308298752 |
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| author | Liang Chi Xian Li Qinghua Liu Ying Liu |
| author_facet | Liang Chi Xian Li Qinghua Liu Ying Liu |
| author_sort | Liang Chi |
| collection | DOAJ |
| description | Photoperiod is believed to regulate growth in fish, although the mechanism involved is still unclear. In this paper, we report a relationship between leptin-receptor A1 (AsLRa1), melatonin-receptor (AsMR) and photoperiod in Atlantic salmon. Atlantic salmon (mean weight 1071.70 ± 155.54 g) were reared under six photoperiod regimes, four constant light regimes 24L:0D, 18L:6D, 12L:12D and 8L:16D, hours of light (L) and dark (D) and two varying light regimes, LL-SL = 24L:0D-8L:16D, and SL-LL = 8L:16D-24L:0D over a period of seven months. The results showed that AsLRa1 transcripts were mainly existed in the hypothalamus and saccus vasculosus (SV), AsMR was mainly expressed in the hypothalamus. Long photoperiod inhibited the expression of AsLRa1 and AsMR transcripts in the Atlantic salmon brain. The expression pattern of AsLRa1 was similar to the expression pattern of AsMR in the hypothalamus. Food intake was higher in fish with lower AsLRa1 transcript levels. This demonstrated that photoperiod influenced somatic growth by changing expression of AsLRa1 in the hypothalamus and SV to affect appetite. In addition, we found that the SV appears to act as a seasonal sensor regulating reproduction in a similar way to the hypothalamus. |
| first_indexed | 2024-12-12T07:30:53Z |
| format | Article |
| id | doaj.art-e750f3f276f94684816d3d211278db38 |
| institution | Directory Open Access Journal |
| issn | 1976-8354 2151-2485 |
| language | English |
| last_indexed | 2024-12-12T07:30:53Z |
| publishDate | 2019-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Animal Cells and Systems |
| spelling | doaj.art-e750f3f276f94684816d3d211278db382022-12-22T00:33:02ZengTaylor & Francis GroupAnimal Cells and Systems1976-83542151-24852019-05-0123320020810.1080/19768354.2019.15951381595138Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar)Liang Chi0Xian Li1Qinghua Liu2Ying Liu3Qingdao Agricultural UniversityInstitute of Oceanology Chinese Academy of SciencesInstitute of Oceanology Chinese Academy of SciencesInstitute of Oceanology Chinese Academy of SciencesPhotoperiod is believed to regulate growth in fish, although the mechanism involved is still unclear. In this paper, we report a relationship between leptin-receptor A1 (AsLRa1), melatonin-receptor (AsMR) and photoperiod in Atlantic salmon. Atlantic salmon (mean weight 1071.70 ± 155.54 g) were reared under six photoperiod regimes, four constant light regimes 24L:0D, 18L:6D, 12L:12D and 8L:16D, hours of light (L) and dark (D) and two varying light regimes, LL-SL = 24L:0D-8L:16D, and SL-LL = 8L:16D-24L:0D over a period of seven months. The results showed that AsLRa1 transcripts were mainly existed in the hypothalamus and saccus vasculosus (SV), AsMR was mainly expressed in the hypothalamus. Long photoperiod inhibited the expression of AsLRa1 and AsMR transcripts in the Atlantic salmon brain. The expression pattern of AsLRa1 was similar to the expression pattern of AsMR in the hypothalamus. Food intake was higher in fish with lower AsLRa1 transcript levels. This demonstrated that photoperiod influenced somatic growth by changing expression of AsLRa1 in the hypothalamus and SV to affect appetite. In addition, we found that the SV appears to act as a seasonal sensor regulating reproduction in a similar way to the hypothalamus.http://dx.doi.org/10.1080/19768354.2019.1595138Photoperiodleptin receptorgrowthAtlantic salmon |
| spellingShingle | Liang Chi Xian Li Qinghua Liu Ying Liu Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) Animal Cells and Systems Photoperiod leptin receptor growth Atlantic salmon |
| title | Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) |
| title_full | Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) |
| title_fullStr | Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) |
| title_full_unstemmed | Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) |
| title_short | Photoperiod may regulate growth via leptin receptor A1 in the hypothalamus and saccus vasculosus of Atlantic salmon (Salmo salar) |
| title_sort | photoperiod may regulate growth via leptin receptor a1 in the hypothalamus and saccus vasculosus of atlantic salmon salmo salar |
| topic | Photoperiod leptin receptor growth Atlantic salmon |
| url | http://dx.doi.org/10.1080/19768354.2019.1595138 |
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