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Moult cycle and morphogenesis in Hyas araneus larvae (Decapoda, Majidae), reared in the laboratory

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Citation:
Anger, K. (1983): Moult cycle and morphogenesis in Hyas araneus larvae (Decapoda, Majidae), reared in the laboratory , Helgoländer Meeresuntersuchungen, 36 , pp. 285-302 .
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Abstract:

Moult cycle and morphogenesis in larval instars (zoea I, zoea II, megalopa) of the spider crab Hyas araneus were studied in the laboratory. Changes in the epidermis and cuticle were documented photographically at daily intervals to characterize the stages of the moult cycle. Stage A (early postmoult) is a very short period during which the larva takes up water. During late postmoult (B) and intermoult (C) the endocuticle is secreted, and there is conspicuous epidermal tissue condensation and growth. The onset of early premoult (D sub(0)) is characterized by epidermal apolysis, occurring first at the bases of the setae in the telson of zoeal instars or in the rostrum of the megalopa.

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