Histology of the androgenic gland and expression of the insulin-like androgenic gland hormone precursor gene in the genital organ of Pacific white shrimp Litopenaeus vannamei

Vázquez‐Islas, Grecia; Garza‐Torres, Rodolfo; Guerrero‐Tortolero, Danitzia A.; Campos‐Ramos, Rafael

doi:10.1163/1937240x-00002232

Cited by 23 publications

(19 citation statements)

References 21 publications

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“…The AG cells described in this study are similar to the findings reported by Vázquez‐Islas et al . () from the subterminal region of the ampoules.…”

Section: Discussionmentioning

confidence: 99%

“…The histology of the presumptive AG of Litopenaeus , including the southern shrimp Litopenaeus setiferus, the white shrimp Litopenaeus occidentalis, the blue shrimp Litopenaeus stylirostris and L. vannamei has been partially described (Campos‐Ramos, Garza‐Torres, Guerrero‐Tortolero, Maeda‐Martínez & Obregón‐Barboza ; Garza‐Torres, Campos‐Ramos & Maeda‐Martínez ; Alfaro‐Montoya & Hernández ; Vázquez‐Islas et al . ). These findings indicate that the AG in Litopenaeus is associated to the terminal ampoule and stretched along the distal region of the descending vas deferens.…”

Section: Introductionmentioning

confidence: 97%

“…In the most economically important penaeid species: the white shrimp Litopenaeus vannamei , the complete sequence of the IAG gene was recently reported (Vázquez‐Islas, Garza‐Torres, Guerrero‐Tortolero & Campos‐Ramos ). The histology of the presumptive AG of Litopenaeus , including the southern shrimp Litopenaeus setiferus, the white shrimp Litopenaeus occidentalis, the blue shrimp Litopenaeus stylirostris and L. vannamei has been partially described (Campos‐Ramos, Garza‐Torres, Guerrero‐Tortolero, Maeda‐Martínez & Obregón‐Barboza ; Garza‐Torres, Campos‐Ramos & Maeda‐Martínez ; Alfaro‐Montoya & Hernández ; Vázquez‐Islas et al .…”

Section: Introductionmentioning

confidence: 99%

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Effects of androgenic gland ablation on growth, sexual characters and spermatogenesis of the white shrimp,Litopenaeus vannamei(Decapoda: Penaeidae) males

et al. 2015

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This research was implemented to study the effects of androgenic gland ablation in the white shrimp Litopenaeus vannamei to explore sex reversal potential as an alternative technology for monosex female mariculture based on the sex dimorphic growth of this species. The surgical procedure was applied to male postlarvae (PL) at different ages, after external sex differentiation, as well as in sex undifferentiated PL. Andrectomized males regenerated normal appendices including pereiopods and pleopods; however, body growth and relative size of regenerated petasmas and appendices masculinae were statistically inferior (P ˂ 0.05) to control males. Spermatogenesis in andrectomized males was active, but a phenomenon of degradation of spermatids and reproductive tissues was detected. No sex reversal was accomplished regardless of PL age from sex undifferentiated stages (PL38) to sex differentiated stages (˃PL55). The complete regeneration of sexual characters in andrectomized L. vannamei (Dendrobranchiata) is different from previous reports from Decapoda.

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“…The AG cells described in this study are similar to the findings reported by Vázquez‐Islas et al . () from the subterminal region of the ampoules.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of androgenic gland ablation on growth, sexual characters and spermatogenesis of the white shrimp,Litopenaeus vannamei(Decapoda: Penaeidae) males

et al. 2015

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“…It was shown that the glycosylation affected the peptide conformation of M japonicus IAG . Furthermore, the N ‐glycosylation site is conserved among Penaeidea crustacean IAGs . These observations suggest that the glycan moiety functions to maintain the peptide conformation significant for its activity in these species.…”

Section: Introductionmentioning

confidence: 94%

Chemical synthesis of N‐glycosylated insulin‐like androgenic gland factor from the freshwater prawn Macrobrachium rosenbergii

Katayama

Nagasawa

2019

Journal of Peptide Science

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Crustacean insulin‐like androgenic gland factor (IAG) of Macrobrachium rosenbergii, a heterodimeric peptide having both four disulfide bonds and an N‐linked glycan, was synthesized by the combination of solid‐phase peptide synthesis and the regioselective disulfide formation reactions. The disulfide isomer of IAG could also be synthesized by the same manner. The conformational analysis of these peptides by circular dichroism (CD) spectral measurement indicated that the disulfide bond arrangement affected the peptide conformation in IAG. On the other hand, the N‐linked glycan attached at A chain showed no effect on CD spectra of IAG. This is the first report for the chemical synthesis of insulin‐like heterodimeric glycopeptide having three interchain disulfides, and the synthetic strategy shown here might be useful for the synthesis of other glycosylated four‐disulfide insulin‐like peptides.

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“…To date, full‐length homologous IAG cDNA have been cloned in many commercially important decapod crustaceans, including crabs (Chung, Manor, & Sagi, ; Huang et al, ; Lawrence et al, ), crayfish (Levy et al, ; Manor et al, ; Rosen et al, ), prawns (Banzai et al, ; Ma et al, ; Phoungpetchara et al, ), and other shrimps (Li, Li, Sun, & Xiang, ; Vazquez‐Islas, Garza‐Torres, Guerrero‐Tortolero, & Campos‐Ramos, ; Zhang, Sun, & Liu, ). However, multiple sequence alignment showed that these IAG shared low similarities among different genus.…”

Section: Discussionmentioning

confidence: 99%

Identification of an insulin‐like androgenic gland hormone transcript highly expressed in male precociousness of the Chinese mitten crab Eriocheir sinensis

2018

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The androgenic gland (AG) hormone is well known as a key peptide to induce masculinization and maintains male characteristic in crustaceans. In this study, a fulllength cDNA encoding insulin-like androgenic gland hormone (EsIAG) was identified from the AG of the Chinese mitten crab Eriocheir sinensis. The full length of EsIAG cDNA contains 1,481 nucleotides, which encodes for a deduced protein of 151 amino acid residues. The predicted pre-peptide is composed of a signal peptide of 19 amino acids (aa), A chain of 44 aa, B chain of 31 aa, and C peptide of 57 aa. Moreover, six conserved cysteine residues and a putative N-linked glycosylated site were found in the deduced protein as reported in other crustaceans. Reverse transcription polymerase chain reaction and in situ hybridization analysis showed EsIAG was only expressed in the AG with especially high abundance during the mature stage of testis. Interestingly, a significantly higher expression level of EsIAG was also detected in precocious individuals than that in the normal grown ones, suggesting that the abnormally high expression of EsIAG might contribute to male precociousness in E. sinensis. K E Y W O R D SEriocheir sinensis, insulin-like androgenic gland hormone, precociousness

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Histology of the androgenic gland and expression of the insulin-like androgenic gland hormone precursor gene in the genital organ of Pacific white shrimp Litopenaeus vannamei

Cited by 23 publications

References 21 publications

Effects of androgenic gland ablation on growth, sexual characters and spermatogenesis of the white shrimp,Litopenaeus vannamei(Decapoda: Penaeidae) males

Effects of androgenic gland ablation on growth, sexual characters and spermatogenesis of the white shrimp,Litopenaeus vannamei(Decapoda: Penaeidae) males

Chemical synthesis of N‐glycosylated insulin‐like androgenic gland factor from the freshwater prawn Macrobrachium rosenbergii

Identification of an insulin‐like androgenic gland hormone transcript highly expressed in male precociousness of the Chinese mitten crab Eriocheir sinensis

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