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Lei Q, Zhang S, Wang J, Qi C, Liu J, Cao D, Li F, Han H, Liu W, Li D, Tang C, Zhou Y. Genome-wide association studies of egg production traits by whole genome sequencing of Laiwu Black chicken. Poult Sci 2024; 103:103705. [PMID: 38598913 DOI: 10.1016/j.psj.2024.103705] [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: 01/17/2024] [Revised: 03/24/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024] Open
Abstract
Compared to high-yield commercial laying hens, Chinese indigenous chicken breeds have poor egg laying capacity due to the lack of intensive selection. However, as these breeds have not undergone systematic selection, it is possible that there is a greater abundance of genetic variations related to egg laying traits. In this study, we assessed 5 egg number (EN) traits at different stages of the egg-laying period: EN1 (from the first egg to 23 wk), EN2 (from 23 to 35 wk), EN3 (from 35 to 48 wk), EN4 (from the first egg to 35 wk), and EN5 (from the first egg to 48 wk). To investigate the molecular mechanisms underlying egg number traits in a Chinese local chicken breed, we conducted a genome-wide association study (GWAS) using data from whole-genome sequencing (WGS) of 399 Laiwu Black chickens. We obtained a total of 3.01 Tb of raw data with an average depth of 7.07 × per individual. A total of 86 genome-wide suggestive or significant single-nucleotide polymorphisms (SNP) contained within a set of 45 corresponding candidate genes were identified and found to be associated with stages EN1-EN5. The genes vitellogenin 2 (VTG2), lipase maturation factor 1 (LMF1), calcium voltage-gated channel auxiliary subunit alpha2delta 3 (CACNA2D3), poly(A) binding protein cytoplasmic 1 (PABPC1), programmed cell death 11 (PDCD11) and family with sequence similarity 213 member A (FAM213A) can be considered as the candidate genes associated with egg number traits, due to their reported association with animal reproduction traits. Noteworthy, results suggests that VTG2 and PDCD11 are not only involved in the regulation of EN3, but also in the regulation of EN5, implies that VTG2 and PDCD11 have a significant influence on egg production traits. Our study offers valuable genomic insights into the molecular genetic mechanisms that govern egg number traits in a Chinese indigenous egg-laying chicken breed. These findings have the potential to enhance the egg-laying performance of chickens.
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Affiliation(s)
- Qiuxia Lei
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Shuer Zhang
- Shandong Animal Husbandry General Station, 250023, Ji'nan, China
| | - Jie Wang
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Chao Qi
- Shandong Animal Husbandry General Station, 250023, Ji'nan, China
| | - Jie Liu
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Dingguo Cao
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Fuwei Li
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Haixia Han
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Wei Liu
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Dapeng Li
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Cunwei Tang
- Fujian Sunnzer Biological Technology Development Co. Ltd., 354100, Guang'ze, China
| | - Yan Zhou
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China..
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Eckelbarger KJ, Hodgson AN. Invertebrate oogenesis – a review and synthesis: comparative ovarian morphology, accessory cell function and the origins of yolk precursors. INVERTEBR REPROD DEV 2021. [DOI: 10.1080/07924259.2021.1927861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Kevin J. Eckelbarger
- Darling Marine Center, School of Marine Sciences, The University of Maine, Walpole, Maine, U.S.A
| | - Alan N. Hodgson
- Department of Zoology and Entomology, Rhodes University, Grahamstown, South Africa
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Sieiro P, Otero J, Aubourg SP. Biochemical Composition and Energy Strategy Along the Reproductive Cycle of Female Octopus vulgaris in Galician Waters (NW Spain). Front Physiol 2020; 11:760. [PMID: 32760287 PMCID: PMC7373806 DOI: 10.3389/fphys.2020.00760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/11/2020] [Indexed: 11/26/2022] Open
Abstract
The common octopus, Octopus vulgaris, has a short life cycle, growing rapidly to maturity, spawning once, and characterized by an asynchronic oocyte development and a synchronic ovulation dying after breeding. This species has a protein and amino acid metabolism and it is usually defined as an income breeder. However, most biochemical studies lack an examination of the whole reproductive cycle, in particular the spawning process. We here studied the biochemical changes and determined the energy strategy along reproduction in female O. vulgaris, and found that proteins were the main energy reserve, primarily located in the body muscle when sexually maturing and decreasing during breeding. Lipids were also an important source of energy in the ovary and digestive gland and decreased during breeding too. By contrast, glycogen had a minor contribution to the energy content and was the unique compound that increased in spawning and post-spawning females. Additionally, the most abundant fatty acids (FA) in all tissues were 16:0, 18:0, 20:1n9, 20:4n6 (ARA), 20:5n3 (EPA) and 22:6n3 (DHA), with a clear predominance of long-chain polyunsaturated FA. The FA profile of mature ovaries was compared with other life stages finding similitudes with eggs, hatchlings and juveniles but considerable differences with paralarvae which showed higher DHA/ARA and EPA/ARA ratios. Therefore, we found important biochemical changes along the reproductive cycle that determined the energetic signature in each tissue, though no significant energy trade-offs between tissues were found, suggesting that, on the one hand, female O. vulgaris obtained energy directly from food accumulated simultaneously in the somatic and reproductive tissues during sexual maturation. However, an energy reallocation from somatic to reproductive growth would occur once vitellogenesis has started, so that the rate at which body growths would decrease in favor of ovary growth. On the other hand, during breeding, a general decrease in the energy content occurred in all tissues, so that the ovary would be responsible for the spawning success, whereas muscle tissues and digestive gland would independently supply the energy needed for the body maintenance safeguarding the female survival needed for the maternal care.
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Affiliation(s)
- Pilar Sieiro
- Campus do Mar (Doctoral Program DoMAR), Universidade de Vigo, Vigo, Spain
| | - Jaime Otero
- Departamento de Oceanografía, Instituto de Investigaciones Marinas (CSIC), Vigo, Spain
| | - Santiago P Aubourg
- Departamento de Tecnología de Alimentos, Instituto de Investigaciones Marinas (CSIC), Vigo, Spain
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Chen C, Li HW, Ku WL, Lin CJ, Chang CF, Wu GC. Two distinct vitellogenin genes are similar in function and expression in the bigfin reef squid Sepioteuthis lessoniana. Biol Reprod 2019; 99:1034-1044. [PMID: 29901793 DOI: 10.1093/biolre/ioy131] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/11/2018] [Indexed: 01/21/2023] Open
Abstract
Unlike vitellogenin, which is the sole major precursor of yolk protein in all oviparous vertebrates, a variety of major precursor of yolk proteins are found among oviparous invertebrates. Sea urchins have a transferrin-like yolk protein, while all other major precursors of yolk proteins in oviparous invertebrates belong to the superfamily of large lipid transfer proteins (LLTPs). However, a comprehensive understanding of vitellogenesis is absent in cephalopods. To understand control of vitellogenesis by the LLTPs gene, two vitellogenins (VTG1 and VTG2), two apolipophorins (APOLP2A and APOLP2B), and a cytosolic large subunit of microsomal triglyceride transfer protein (MTTP) found in the bigfin reef squid. Only the two VTGs showed high levels of expression in mature females compared to males. We further analyzed the expression profile and localization of both VTGs/VTGs during ovarian development. Our data showed that VTGs/VTGs expressions were correlated to the female reproductive cycle. Ovarian VTG1 and VTG2 were localized in the follicle cells but not in oocytes. In addition, VTG1 and VTG2 were represented in follicle cells and oocytes. Thus, our results showed that both VTGs were synthesized by follicle cells and are then delivered to oocytes. In addition, we demonstrated that VTGs were the major precursor of yolk protein in bigfin reef squid. We also found differential proteolytic cleavage processes of VTG1 and VTG2 during VTGs accumulation in oocytes. Therefore, our data shed light on the molecular mechanism of the yolk accumulation pathway in cephalopods.
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Affiliation(s)
- Chih Chen
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Hau-Wen Li
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Wei-Lun Ku
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Chien-Ju Lin
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - Ching-Fong Chang
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan.,Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
| | - Guan-Chung Wu
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan.,Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
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Gonadal sex differentiation and development during early ontogenesis in the breeding kisslip cuttlefish ( Sepia lycidas). Heliyon 2019; 5:e01948. [PMID: 31338455 PMCID: PMC6606992 DOI: 10.1016/j.heliyon.2019.e01948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/15/2019] [Accepted: 06/07/2019] [Indexed: 12/16/2022] Open
Abstract
To understand and obtain basic information on sex differentiation in the kisslip cuttlefish (Sepia lycidas), the gonadal sex differentiation process was investigated histologically. An undifferentiated gonad consisting of germ cells and somatic cells was found to form at a caudal site in the space between the internal yolk sacks of cuttlefish embryos at 14 and 21 days after spawning (DAS). Sexual dimorphism in the gonad was first detected at around 28 DAS. Meiotic oocytes were observed as the first visible morphological characteristic of ovaries in the gonads of some cuttlefish embryos at 28 DAS. In other individuals, neither meiotic germ cells, nor the appearance of a testicular structure, were observed in the gonad even after 10 days post hatching (DPH). Seminiferous tubules, consisting of a small number of spermatogonia and a surrounding basement membrane, were the first visible morphological characteristic of the testis in the male gonad, detected at around 20 DPH. This is the third report on the gonadal sex differentiation process in cephalopods.
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Xue R, Wang X, Xu S, Liu Y, Feng C, Zhao C, Liu Q, Li J. Expression profile and localization of vitellogenin mRNA and protein during ovarian development in turbot (Scophthalmus maximus). Comp Biochem Physiol B Biochem Mol Biol 2018; 226:53-63. [DOI: 10.1016/j.cbpb.2018.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 07/24/2018] [Accepted: 08/06/2018] [Indexed: 12/17/2022]
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