Identification and partial characterization of O lyra longicaudata (McClelland, 1842) vitellogenins: Seasonal variation in plasma, relative to estradiol-17β and ovarian growth

Ghosh, Pritha; Das, Debabrata; Juin, Subir Kumar; Hajra, Sudip; Kachari, Akash; Das, Debangshu Narayan; Nath, Prem; Maitra, Saumen Kumar

doi:10.1016/j.aqrep.2016.01.005

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…In addition, the increase of steroid hormone at the maturation stage is followed by high GSI value at the mature stage of female. Ghosh et al (2016) reported that the gradual increase of 17ß-estradiol in plasma during vitellogenesis, increased Vtg level and ovarian weight consistently, reaching the peak in the pre-spawning. The 17ß-estradiol is particularly detected in mature females and not normally detected in juveniles and males, whereas injection of exogenous estrogen can induce the Vtg expression.…”

Section: Discussionmentioning

confidence: 97%

Profile of 17ß-estradiol, vitellogenin, and egg diameter during gonad maturation process of striped catfish Pangasianodon hypophthalmus

Pamungkas

Jusadi

Zairin

et al. 2019

Jurnal Akuakultur Indonesia

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This study was conducted to evaluate the profile of 17ß-estradiol (E2) and vitellogenin (Vtg) in plasma and egg diameter during gonad maturity process of striped catfish Pangasianodon hypophthalmus. Blood samples were collected from immature striped catfish, male and female with different stage of gonad maturity (stage I, II, III, and IV) to measure the concentrations of E2 and Vtg. Gonad maturity development of striped catfish was observed based on egg diameter. Result showed that E2 concentrations were the highest (843.65 pg/mL) on female with maturity stage III, the lowest on the male (26.34 pg/mL), and immature female fish (29.37 pg/mL). The protein band of Vtg was obtained on the plasma of the mature female (stage I, II, III and IV) with a molecular weight (MW) between 140−180 kDa, but it was not obtained on immature female dan male striped catfish. The highest concentration of Vtg was found in the plasma of the female fish with maturity stage III (87.34 mg/mL), then on the stage II (74.83 mg/mL), I (68.58 mg/mL), and IV (33.45 mg/mL). It showed that egg yolk formation occurred in the female mature. The average egg diameter was 0.107 ± 0.052 mm, 0.318 ± 0.086 mm, 0.864 ± 0.099 mm, and 1.041 ± 0.058 mm on the maturity stage I, II, III, and IV respectively. The increase of egg diameter along with development of gonad maturity stage indicated that egg development occurred due to the process of vitellogenesis and the addition of egg yolk on oocyte. Keywords : egg diameter, gonad maturity, striped catfish , 17ß–estradiol, vitellogenin ABSTRAK Penelitian dilakukan untuk mengevaluasi profil estradiol-17β (E2), vitelogenin (Vtg) dalam plasma dan diameter telur pada proses pematangan gonad ikan patin siam (Pangasianodon hypophthalmus). Sampel darah untuk pengukuran konsentrasi E2 dan Vtg plasma diperoleh dari ikan patin siam betina yang belum matang gonad, ikan jantan, ikan betina dengan tahap kematangan gonad yang berbeda (tahap I, II, III dan IV). Perkembangan kematangan gonad ikan patin siam diamati berdasarkan diameter telur. Hasil penelitian menunjukkan bahwa konsentrasi E2 tertinggi (843,65 pg/mL) pada ikan betina dengan kematangan tahap III, terendah pada ikan jantan (26,34 pg/mL), dan ikan betina tidak matang gonad (29,37 pg/mL). Pita protein Vtg pada sampel plasma diperoleh dari betina matang gonad (tahap I, II, III dan IV) dengan berat molekul antara 140-180 kDa, tetapi tidak diperoleh pada ikan patin siam betina yang belum dewasa dan jantan. Nilai konsentrasi tertinggi Vtg ditemukan dalam plasma darah ikan betina dengan tingkat kematangan III (87,34 mg/mL) kemudian pada tahap II (74,83 mg/mL), I (68,58 mg/mL) dan IV (33,45 mg/mL). Hal ini menunjukkan bahwa pada ikan betina dewasa terjadi proses pembentukan kuning telur (vitelogenesis). Rata-rata diameter telur adalah 0,107 ± 0,052 mm, 0,318 ± 0,086 mm, 0,864 ± 0,099 mm dan 1,041 ± 0,058 mm pada tingkat kematangan I, II, III dan IV secara berurutan. Peningkatan nilai diameter telur seiring dengan perkembangan tahap kematangan gonad menunjukkan bahwa perkembangan telur terjadi karena proses vitelogenesis dan penambahan bahan kuning telur pada oosit. Kata kunci : diameter telur, 17ß-estradiol, kematangan gonad, patin siam, vitelogenin

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Section: Discussionmentioning

confidence: 97%

Profile of 17ß-estradiol, vitellogenin, and egg diameter during gonad maturation process of striped catfish Pangasianodon hypophthalmus

Pamungkas

Jusadi

Zairin

et al. 2019

Jurnal Akuakultur Indonesia

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“…Vtg is synthesized and secreted from the liver of oviparous vertebrates [41] and from fat bodies in insects [42], and is then taken up for oocyte development and other functions. In crustaceans, Vtg is produced mainly in the hepatopancreas and ovaries, deposited in the hemolymph, and then accumulated in growing oocytes.…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Identification of Vitellogenin Gene Family and Comparative Analysis of Their Involvement in Ovarian Maturation in Exopalaemon carinicauda

Wang,

Tang,

et al. 2024

IJMS

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Vitellogenin (Vtg) is a precursor of yolk proteins in egg-laying vertebrates and invertebrates and plays an important role in vitellogenesis and embryonic development. However, the Vtg family remains poorly characterized in Exopalaemon carinicauda, a major commercial mariculture species found along the coasts of the Yellow and Bohai Seas. In this study, 10 Vtg genes from the genomes of E. carinicauda were identified and characterized. Phylogenetic analyses showed that the Vtg genes in crustaceans could be classified into four groups: Astacidea, Brachyra, Penaeidae, and Palaemonidae. EcVtg genes were unevenly distributed on the chromosomes of E. carinicauda, and a molecular evolutionary analysis showed that the EcVtg genes were primarily constrained by purifying selection during evolution. All putative EcVtg proteins were characterized by the presence of three conserved functional domains: a lipoprotein N-terminal domain (LPD_N), a domain of unknown function (DUF1943), and a von Willebrand factor type D domain (vWD). All EcVtg genes exhibited higher expression in the female hepatopancreas than in other tissues, and EcVtg gene expression during ovarian development suggested that the hepatopancreas is the main synthesis site in E. carinicauda. EcVtg1a, EcVtg2, and EcVtg3 play major roles in exogenous vitellogenesis, and EcVtg3 also plays a major role in endogenous vitellogenesis. Bilateral ablation of the eyestalk significantly upregulates EcVtg mRNA expression in the female hepatopancreas, indicating that the X-organ/sinus gland complex plays an important role in ovarian development, mostly by inducing Vtg synthesis. These results could improve our understanding of the function of multiple Vtg genes in crustaceans and aid future studies on the function of EcVtg genes during ovarian development in E. carinicauda.

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GnRHr, LHr, and Vg gene expression levels and ovarian development of G5 transgenic mutiara female catfish (Clarias gariepinus) after exposure photoperiod induction

Buwono,

Grandiosa,

Mulyani

et al. 2024

Discov Appl Sci

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This study aimed to determine the relative expression ratios of the genes gonadotrophin-releasing hormone receptor (GnRHr), luteinizing hormone receptor (LHr), vitellogenin (Vg) and β-actin genes as expression control internal of the G5 fish using real-time PCR in a photoperiod experiment with designed treatments (A: 8L-16D; B: 12L-12D; C: 16L-8D for transgenic fish; and A*: 8L-16D; B*: 12L-12D; C*: 16L-8D for nontransgenic fish) for 60 days of rearing period. Ovary maturation was evaluated in G5 transgenic mutiara catfish during different photoperiod induction. A short photoperiod (8L-16D) induced an high expression of GnRHr, LHr, and Vg genes (mean, 4.42 ± 0.53, 5.63 ± 0.42, and 6.67 ± 0.31, respectively), indicating the role of dark cycle in increasing the gene expressions involved in ovarian maturation of G5 transgenic mutiara catfish. The lowest GnRHr, LHr, and Vg gene expression levels were found in nontransgenic fish (C*) (mean, 1.27 ± 0.13, 1.38 ± 0.24, and 2.42 ± 0.33, respectively). The exposure of transgenic fish (CgGH insert content) to a long photoperiod (16L-8D) resulted in lower expression levels of GnRHr, LHr, and Vg (mean, 2.31 ± 0.27, 2.34 ± 0.25, and 4.49 ± 0.30, respectively) and lower levels of hormones Vg and E2 (mean, 295.16 ± 21.71 μg/mL and 0.25 ± 0.03 ng/mL, respectively) and in non-transgenic fish (mean, 163.54 µg/mL and 0.14 ng/mL, respectively). Short photoperiods (8L-16D and 12l-12D) led to oocyte maturation and higher GSI values (mean, 12.24 ± 0.53 and 10.24 ± 0.38, respectively) compared to long photoperiods (16L-8D). Conversely, a long photoperiod led to decreased GnRHr, LHr, and Vg expression levels, and Vg and E2 hormone levels, leading to the growth of immature oocytes and decreased GSI (mean, 3.93 ± 0.29) in nontransgenic fish. The presence of CgGH in G5 transgenic mutiara female catfish can maintain the growth of primary oocytes to secondary oocytes during the 16L-8D photoperiod induction.

show abstract

Identification and partial characterization of O lyra longicaudata (McClelland, 1842) vitellogenins: Seasonal variation in plasma, relative to estradiol-17β and ovarian growth

Cited by 7 publications

References 49 publications

Profile of 17ß-estradiol, vitellogenin, and egg diameter during gonad maturation process of striped catfish Pangasianodon hypophthalmus

Profile of 17ß-estradiol, vitellogenin, and egg diameter during gonad maturation process of striped catfish Pangasianodon hypophthalmus

Genome-Wide Identification of Vitellogenin Gene Family and Comparative Analysis of Their Involvement in Ovarian Maturation in Exopalaemon carinicauda

GnRHr, LHr, and Vg gene expression levels and ovarian development of G5 transgenic mutiara female catfish (Clarias gariepinus) after exposure photoperiod induction

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