Monosex in Aquaculture

Ventura, Tomer

doi:10.1007/978-3-319-92486-1_6

Cited by 11 publications

(5 citation statements)

References 18 publications

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“…Previous studies conducted in insects and vertebrates confirmed that the potential role for Ftz‐f1 was in both steroidogenesis and sexual differentiation (Bond et al, 2011; Boulanger et al, 2011; Sultan et al, 2014; Yamada et al, 2000). In crustacean aquaculture, size dimorphism between males and females was the key factor determining the effect of yield (Ventura et al, 2018). Therefore, elucidation sex determination mechanism was prerequisite for exploiting monosex culture (Jin et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Molecular characterization of the Ftz‐f1 gene in redclaw crayfish Cherax quadricarinatus and its potential role in ovarian development

Chen

Zheng

Jia

et al. 2022

Aquaculture Research

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Ftz‐f1 was a member of the NR5A‐family nuclear receptors, and previously predicted to be participated in the complex ovarian processes. In this study, we characterized the full‐length cDNA of Ftz‐f1 with an open reading frame of 1746 bp encoding 581 amino acids in the redclaw crayfish, Cherax quadricarinatus (CqFtz‐f1). Amino acid alignments and structural prediction uncovered that two highly conserved domain, DBD (DNA binding domain) and LBD (ligand binding domain) were identified, which shared with other members of nuclear receptors family. Tissues distribution showed that CqFtz‐f1 exhibited sexually dimorphic expression pattern with a higher transcript level in ovary. Staging of ovarian development was conducted, which to be divided into four different stages by external feature and histology analysis. The changes of GSI (Gonadosomatic index) were in accordance with the mRNA expression of CqFtz‐f1 during the reproductive cycle. In addition, both eyestalk ablation and β‐oestradiol (E2) injection significantly increased the expression levels of Ftz‐f1 and vg (vitellogenin). Furthermore, treatment with CqFtz‐f1 dsRNA injection generated distinct effects on the expression of vg, suggesting that CqFtz‐f1 might have positive effects on ovarian development by regulating vg expression in the redclaw crayfish.

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Section: Discussionmentioning

confidence: 99%

Molecular characterization of the Ftz‐f1 gene in redclaw crayfish Cherax quadricarinatus and its potential role in ovarian development

Chen

Zheng

Jia

et al. 2022

Aquaculture Research

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“…For example, if the female of a fish species is generally more prominent than the male, so that in aquaculture perfecting the production of all-female populations on a big scale would be great and more beneficial than mixed sex culture (Ventura, 2018). The reason for the sizes difference may be triggered by the environmental influence including ecological habitat (Laporte et al, 2018), geographical distribution (Jiménez et al, 1998), sex-specific development and growth rates (Kelly et al, 1999;Hüssy et al, 2012), migration arrangements (Eltink, 1987) and variances of spawning behavior (Jakobsen and Ajiad, 1999).…”

Section: Monosex Culture and Application Of Neo-female Technologymentioning

confidence: 99%

Recent developments in aquaculture – A review

Manan,

Jalilah,

Fauzan

et al. 2023

Annals of Animal Science

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Towards the sustainable aquaculture production, more recent technologies have been developed in the past few years. The application of effectives microbes (EM) in controlling water quality, the application of biofloc technology, aquamimicry, Black Soldier fly (BSF) as supplemental protein feed, application of triploidy, polyploidy, vaccines, probiotic and prebiotic, Internet of Things (IoT) in monitoring the water quality in the farm operation, monosex culture and neo-female application also being applied in the aquaculture operation. The developments of these recent technology were towards achieving the sustainable aquaculture production, prevention of the disease outbreak, help in increasing the yield of crops harvested as well as towards the green environmental developments. This review paper emphasized on the most recent technologies developed in aquaculture in the past few years until these days. The developments of the new technology in aquaculture also in order to support the sustainable development goals (SDGs) proposed by the United Nation focused on SDG1 (no poverty) and SDG2 (zero hunger) from the increase of aquaculture production achieved through the recent developed technology. Ultimately, this review paper can generate new knowledge and information to the aquaculturist and aquafarmers on the new technologies and developments in aquaculture which could help benefit in the cultures operation and increase of production in the year future.

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“…Monosex aquaculture, in which populations are either all-male or all-female, is a desirable practice in animal husbandry when a specific sex is larger, faster growing, or more attractive. All methods of generating monosex crustacean populations have thus far relied on an initial sex-reversal via endocrine manipulation, from female to male or vice versa, to create a neo-male or neo-female, which can be bred to produce all-male or all-female progeny [ 14 ]. In the giant freshwater prawn Macrobrachium rosenbergii , this patented method has been used to successfully generate commercial all-male populations, facilitating higher production over shorter time scales as a result of faster and more uniform growth [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Changes Following Induced De-Masculinisation of Australian Red Claw Crayfish Cherax quadricarinatus

Smith

Glendinning

Ventura

2023

IJMS

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The Australian red claw crayfish Cherax quadricarinatus, an emerging species within the freshwater aquaculture trade, is not only an ideal species for commercial production due to its high fecundity, fast growth, and physiological robustness but also notoriously invasive. Investigating the reproductive axis of this species has been of great interest to farmers, geneticists, and conservationists alike for many decades; however, aside from the characterisation of the key masculinising insulin-like androgenic gland hormone (IAG) produced by the male-specific androgenic gland (AG), little remains known about this system and the downstream signalling cascade involved. This investigation used RNA interference to silence IAG in adult intersex C. quadricarinatus (Cq-IAG), known to be functionally male but genotypically female, successfully inducing sexual redifferentiation in all individuals. To investigate the downstream effects of Cq-IAG knockdown, a comprehensive transcriptomic library was constructed, comprised of three tissues within the male reproductive axis. Several factors known to be involved in the IAG signal transduction pathway, including a receptor, binding factor, and additional insulin-like peptide, were found to not be differentially expressed in response to Cq-IAG silencing, suggesting that the phenotypic changes observed may have occurred through post-transcriptional modifications. Many downstream factors displayed differential expression on a transcriptomic level, most notably related to stress, cell repair, apoptosis, and cell proliferation. These results suggest that IAG is required for sperm maturation, with necrosis of arrested tissue occurring in its absence. These results and the construction of a transcriptomic library for this species will inform future research involving reproductive pathways as well as biotechnological developments in this commercially and ecologically significant species.

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Monosex in Aquaculture

Cited by 11 publications

References 18 publications

Molecular characterization of the Ftz‐f1 gene in redclaw crayfish Cherax quadricarinatus and its potential role in ovarian development

Molecular characterization of the Ftz‐f1 gene in redclaw crayfish Cherax quadricarinatus and its potential role in ovarian development

Recent developments in aquaculture – A review

Transcriptomic Changes Following Induced De-Masculinisation of Australian Red Claw Crayfish Cherax quadricarinatus

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