Q110: Molting hormones from marine invertebrates belong to —-——- - Aquaculture and Marine Biotechnology - Fish Biotechnology- ICAR JRF/SRF 2024 | Agrigyan

• Crustacean Molting Hormones:
• In marine crustaceans (shrimps, crabs, lobsters) and other arthropods, ecdysis (molting) is regulated by ecdysteroids, which are steroid hormones.
• The Y-organ (analogous to the insect prothoracic gland) synthesizes ecdysone, which is hydroxylated in peripheral tissues to the biologically active molting hormone 20-hydroxyecdysone (20E).
• They possess a cyclopentanoperhydrophenanthrene steroid nucleus.
• nalysis:
• (steroids): Correct.

Correct option: (4) steroids