☆ 4.3 Article

Morphological changes in the structure and function of the feeding appendages and foregut of the larvae and first juvenile of the freshwater prawn Macrobrachium acanthurus

JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM (2018)

Journal

JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM

Volume 98, Issue 4, Pages 713-720

Publisher

CAMBRIDGE UNIV PRESS

DOI: 10.1017/S0025315416001855

Keywords

Lecithotrophy; morphology; larval development; Palaemonidae; Decapoda

Categories

Marine & Freshwater Biology

Funding

Federal University of Para (UFPA)
Brazilian Higher Education Training Program (CAPES)
FAPESPA

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Abstract

The present study describes the morphological changes of the mouthparts and foregut of the freshwater prawn M. acanthurus that occur during the development of the larvae and first juvenile. The results indicate that the zoeae I have mouthparts with reduced setae and a structureless foregut that indicates obligatory lecithotrophic behaviour. There is an increase in the number of setae in these structures between the zoea II and the juvenile stage, indicating the adaptation of the organism for feeding. More complex structural alterations were observed in the first juvenile, which acquires benthonic habits, which ensure the capture and ingestion of a diversity of feeding resources found in the substrate.

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