Effect of bilateral eyestalk ablation on ovarian development and moulting in early and late intermoult stages of female spiny lobster Panulirus homarus (Linnaeus, 1758)

Characterization of prostanoid pathway and the control of its activity by the eyestalk optic ganglion in the female giant freshwater prawn, Macrobrachium rosenbergii

“…As it was well known that the eyestalk optic ganglia secrete many important hormones involved in ovarian maturation, including GIH which inhibits the synthesis of vitellogenin (Treerattrakool et al, 2008;Nagaraju, 2011;Uawisetwathana et al, 2011). Removing eyestalk induced early ovarian maturation in many decapods (Okumura et al, 2006;Okumura, 2007;Fernandez and Radhakrishnan, 2016) by removing GIH as demonstrated in the pink shrimp, Penaeus notialis (Rosas et al, 1993). Moreover, eyestalk ablation significantly increased vitellogenin expression level in the hepatopancreas and ovary resulting in acceleration of ovary maturation by removing inhibitory hormone in the oriental river prawn, Macrobrachium nipponense (Bai et al, 2015).…”

Characterization of prostanoid pathway and the control of its activity by the eyestalk optic ganglion in the female giant freshwater prawn, Macrobrachium rosenbergii

“…As it was well known that the eyestalk optic ganglia secrete many important hormones involved in ovarian maturation, including GIH which inhibits the synthesis of vitellogenin (Treerattrakool et al, 2008;Nagaraju, 2011;Uawisetwathana et al, 2011). Removing eyestalk induced early ovarian maturation in many decapods (Okumura et al, 2006;Okumura, 2007;Fernandez and Radhakrishnan, 2016) by removing GIH as demonstrated in the pink shrimp, Penaeus notialis (Rosas et al, 1993). Moreover, eyestalk ablation significantly increased vitellogenin expression level in the hepatopancreas and ovary resulting in acceleration of ovary maturation by removing inhibitory hormone in the oriental river prawn, Macrobrachium nipponense (Bai et al, 2015).…”

Evaluating Fertilization Control and Reproductive Manipulation Techniques for Enhancing Crustacean Reproductive Performance: A Review

“…All of these mechanisms aid in the yolk deposition process in the oocyte, increasing oocyte volume and being crucial for later embryonic development in crustaceans [34]. A premature ovary, which can be identified by its smaller size and less developed oocytes, can develop into a mature one within 1 week after eyestalk ablation due to the removal of GIH [35]. To date, results from applying this technique to various crab and shrimp species have demonstrated higher reproductive performance compared to uneyestalk‐ablated individuals, based on indicators such as gonadosomatic index, ovary transcriptome profiles, fecundity, and spawning success (see Table 2).…”

Integrated Transcriptomic Analysis Reveals mRNA and ncRNA Expression and Potential Co-Expression Networks in the Gonads of Panulirus homarus

“…Unlike vertebrates, reproductive development in decapod crustaceans is governed by a complex neuroendocrine network involving the eyestalk, endocrine organs, gonads, and downstream signaling pathways. The X-organ-sinus gland (XO-SG) complex serves as a key neuroendocrine regulatory center [7], and members of the crustacean hyperglycemic hormone (CHH) family have been implicated in the regulation of vitellogenesis, gametogenesis, and gonadal maturation [8,9]. These endocrine factors constitute important components of reproductive regulation in decapods, although the downstream transcriptional patterns associated with gonadal characteristics remain incompletely characterized in many lobster species.…”

Characterization of prostanoid pathway and the control of its activity by the eyestalk optic ganglion in the female giant freshwater prawn, Macrobrachium rosenbergii

“…As it was well known that the eyestalk optic ganglia secrete many important hormones involved in ovarian maturation, including GIH which inhibits the synthesis of vitellogenin (Treerattrakool et al, 2008;Nagaraju, 2011;Uawisetwathana et al, 2011). Removing eyestalk induced early ovarian maturation in many decapods (Okumura et al, 2006;Okumura, 2007;Fernandez and Radhakrishnan, 2016) by removing GIH as demonstrated in the pink shrimp, Penaeus notialis (Rosas et al, 1993). Moreover, eyestalk ablation significantly increased vitellogenin expression level in the hepatopancreas and ovary resulting in acceleration of ovary maturation by removing inhibitory hormone in the oriental river prawn, Macrobrachium nipponense (Bai et al, 2015).…”

Evaluating Fertilization Control and Reproductive Manipulation Techniques for Enhancing Crustacean Reproductive Performance: A Review

“…All of these mechanisms aid in the yolk deposition process in the oocyte, increasing oocyte volume and being crucial for later embryonic development in crustaceans [34]. A premature ovary, which can be identified by its smaller size and less developed oocytes, can develop into a mature one within 1 week after eyestalk ablation due to the removal of GIH [35]. To date, results from applying this technique to various crab and shrimp species have demonstrated higher reproductive performance compared to uneyestalk‐ablated individuals, based on indicators such as gonadosomatic index, ovary transcriptome profiles, fecundity, and spawning success (see Table 2).…”

Integrated Transcriptomic Analysis Reveals mRNA and ncRNA Expression and Potential Co-Expression Networks in the Gonads of Panulirus homarus

“…Unlike vertebrates, reproductive development in decapod crustaceans is governed by a complex neuroendocrine network involving the eyestalk, endocrine organs, gonads, and downstream signaling pathways. The X-organ-sinus gland (XO-SG) complex serves as a key neuroendocrine regulatory center [7], and members of the crustacean hyperglycemic hormone (CHH) family have been implicated in the regulation of vitellogenesis, gametogenesis, and gonadal maturation [8,9]. These endocrine factors constitute important components of reproductive regulation in decapods, although the downstream transcriptional patterns associated with gonadal characteristics remain incompletely characterized in many lobster species.…”

Characterization of prostanoid pathway and the control of its activity by the eyestalk optic ganglion in the female giant freshwater prawn, Macrobrachium rosenbergii

“…As it was well known that the eyestalk optic ganglia secrete many important hormones involved in ovarian maturation, including GIH which inhibits the synthesis of vitellogenin (Treerattrakool et al, 2008;Nagaraju, 2011;Uawisetwathana et al, 2011). Removing eyestalk induced early ovarian maturation in many decapods (Okumura et al, 2006;Okumura, 2007;Fernandez and Radhakrishnan, 2016) by removing GIH as demonstrated in the pink shrimp, Penaeus notialis (Rosas et al, 1993). Moreover, eyestalk ablation significantly increased vitellogenin expression level in the hepatopancreas and ovary resulting in acceleration of ovary maturation by removing inhibitory hormone in the oriental river prawn, Macrobrachium nipponense (Bai et al, 2015).…”

Evaluating Fertilization Control and Reproductive Manipulation Techniques for Enhancing Crustacean Reproductive Performance: A Review

“…All of these mechanisms aid in the yolk deposition process in the oocyte, increasing oocyte volume and being crucial for later embryonic development in crustaceans [34]. A premature ovary, which can be identified by its smaller size and less developed oocytes, can develop into a mature one within 1 week after eyestalk ablation due to the removal of GIH [35]. To date, results from applying this technique to various crab and shrimp species have demonstrated higher reproductive performance compared to uneyestalk‐ablated individuals, based on indicators such as gonadosomatic index, ovary transcriptome profiles, fecundity, and spawning success (see Table 2).…”

Integrated Transcriptomic Analysis Reveals mRNA and ncRNA Expression and Potential Co-Expression Networks in the Gonads of Panulirus homarus

“…Unlike vertebrates, reproductive development in decapod crustaceans is governed by a complex neuroendocrine network involving the eyestalk, endocrine organs, gonads, and downstream signaling pathways. The X-organ-sinus gland (XO-SG) complex serves as a key neuroendocrine regulatory center [7], and members of the crustacean hyperglycemic hormone (CHH) family have been implicated in the regulation of vitellogenesis, gametogenesis, and gonadal maturation [8,9]. These endocrine factors constitute important components of reproductive regulation in decapods, although the downstream transcriptional patterns associated with gonadal characteristics remain incompletely characterized in many lobster species.…”