Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii)

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1 Aquaculture Extension Manual No. 52 September 2011 Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii) Maria Lourdes A. Cuvin-Aralar Manuel A. Laron Emiliano V. Aralar Ursan C. de la Paz Southeast Asian Fisheries Development Center AQUACULTURE DEPARTMENT

2 Aquaculture Extension Manual No. 52 Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii) Maria Lourdes A. Cuvin-Aralar Manuel A. Laron Emiliano V. Aralar Ursan C. de la Paz Aquaculture Department Southeast Asian Fisheries Development Center

3 Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii) September 2011 ISSN Copyright 2011 Southeast Asian Fisheries Development Center Aquaculture Department Tigbauan, Iloilo, Philippines ALL RIGHTS RESERVED No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without the permission in writing from the publisher For comments and inquiries, please contact: SEAFDEC Aquaculture Department Tigbauan, Iloilo 5021, Philippines Tel Fax AQD Website (63-33) , (63-33) , SEAFDEC/AQD Library Cataloging-in-Publication Data Breeding and seed production of the giant freshwater prawn (Macrobrachium rosenbergii) / Maria Lourdes Cuvin-Aralar... [et al.]. [viii], 33 p. : col. ill. -- (Aquaculture extension manual, ; no. 52). Includes bibliographical references. 1. Macrobrachium rosenbergii--breeding. 2. Shrimp culture. I. Cuvin-Aralar, Maria Lourdes. II. Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC/AQD). III. Series. SH B DLS

4 FOREWORD SEAFDEC Aquaculture Department s research on the breeding, larval production, and grow-out of the freshwater prawn since the 1980 s has continuously been evolving. Studies conducted at its Binangonan Freshwater Station have made significant contributions to the implementation of effective and practical farming systems for Macrobrachium rosenbergii, an aquaculture commodity with economic importance and high export potential. Proper understanding of the giant freshwater prawn, from its biology to its culture system, is necessary for the successful and optimized farming of this species. Accordingly, relevant science-based techniques on its breeding and seed production are presented in this manual. Included in this publication are essential information such as collection, transport, holding, and management of broodstock; hatchery facilities; stocking density and larval rearing techniques; feeding management; post-larvae harvesting and nursery; and health management. May this manual benefit the various stakeholders of the aquaculture industry, especially the freshwater prawn farmers, and consequently guide them in effecting sustainable aquaculture practices. Joebert D. Toledo, D. Agr. Chief SEAFDEC Aquaculture Department

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6 CONTENTS Foreword v Introduction 1 Biology 2 Broodstock collection 5 Transport of broodstock 5 Holding of broodstock 6 Broodstock management 7 Sex identification 8 Reproductive behavior 8 Egg development 10 Hatching of larvae 10 Preparation of brackishwater 11 Hatchery facilities 14 Basic types of hatchery 14 Larval rearing tanks 17 Stocking density of larvae 19 Monitoring of larval development 19 Water quality for larval rearing 21 Feeding management 21 Larval feed preparation 23 Artemia nauplii (AN) 23 Egg custard (EC) 23 Harvesting of post-larvae 24 Nursery for post-larvae 25 Primary nursery 25 Secondary nursery 25 Packing and transport 26 Health management and diseases 27 Culture management 27 Sanitation 27 Antibiotics, probiotics, and immunostimulants 27 Viral diseases 28 Bacterial diseases 29 Fungal diseases 29 References 31 About the authors 33

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8 INTRODUCTION All farmed freshwater prawns belong to the genus Macrobrachium. The largest species in the genus is Macrobrachium rosenbergii (Fig. 1), hence the name giant freshwater prawn. The species thrive in many tropical and subtropical areas of the world. It is native to the Philippines, Thailand, Malaysia, Indonesia, Vietnam, Myanmar, India, Bangladesh, and Australia. It has been introduced for culture in other areas beyond its natural distribution such as in China, USA, and Latin American countries. The species live in freshwater environments with links to saline waters since the larvae of the species require brackishwater for complete development. Fig. 1. Macrobrachium rosenbergii