Fisheries is next to agriculture in offering employment opportunities for poor rural communities in Sundarbans. With around 17 million hectares of canals in India, there is considerable potential to generate jobs and improve the food security of rural populations if canals can be used for aquaculture production. This study explored the feasibility of aquaculture as a secondary use of canal infrastructure through use of net barrier partitions, installed and managed by local communities.

With the implementation of the new aquatic animal disease reporting in the Asia Pacific region from January 2021, and in lieu of the published QAAD Reports (last issue published was 4th quarter of 2020), NACA is publishing reported aquatic animal diseases submitted by countries in the Asia-Pacific region.  This report covers the third quarter of 2021. The original and updated reports are available from the QAAD page.

In this issue:

• 31st NACA Governing Council held online.
• SDG-aligned Artemia Aquaculture Workshop held in China / online.
• Policy brief on sustaining the future of the global seaweed industry.
• Quarterly Aquatic Animal Disease Report
• Training Course on Mariculture Technology in Asia-Pacific.

The 31st Governing Council Meeting of NACA was held from 29-30 November via video conference. The meeting was attended by 44 participants including the representatives of 16 member governments, the Regional Lead Centres for China, India, Iran and Thailand, the Food and Agriculture Organization of the United Nations, the Asia-Pacific Association of Agricultural Research Institutions, the Network of Aquaculture Centres in Central and Eastern Europe, the Pacific Community, the Bangladesh Shrimp and Fish Foundation and the Centre for Integrated Rural Development for Asia and the Pacific. The main agenda item for the meeting was consideration of the new NACA Strategic Plan 2021-2024.

The Fish Health Section of the Asian Fisheries Society will hold a free webinar on significant bacterial diseases in aquaculture on 8 December, via Zoom. Presentations are: Overview of bacterial diseases of aquatic animals (Prof. Indrani Karunasagar, Nitte University); Relationship between shrimp gut health, microbiota and AHPND (Prof. Han-Ching Wang, National Cheng Kung University), and The gut as the first line of defence against bacterial diseases: Comparing fish and shrimp (Dr Pikul Jiravanichpaisal, Mani Genetics Co.). Participation is open but registration is required.

A free virtual seminar series will be held from 13-17 December, hosted by the Freshwater Fisheries Research Center, Chinese Academy of Fisheries Sciences, in partnership with NACA and the Chinese Ministry of Agriculture and Rural Affairs. The seminar will be held via Zoom. It will give participants a background in aquatic resource conservation practices, recommend options for sustainable aquaculture farming systems with potential for intensification with intervention strategies, and build a communication and experience exchange platform for information dissemination and future collaboration. Participation is free. Registration closes 10 December.

In this issue:

Habitat breeding and seed rearing of a near threatened featherback, Chitala chitala; Wild seed collection and modified-extensive farming of Mystus gulio in inland water bodies of South 24 Parganas, West Bengal; Freshwater pearl culture practices and challenges in India; Next generation probiotics: Future therapeutics for sustainable aquaculture; NACA Newsletter.

Next generation probiotics (NGP) or live biotherapeutics are organisms that have been designed to be used as living medicines to treat, cure or diagnose disease. They differ from traditional probiotics in that they are likely to be registered under a drug regulatory framework. At present, conventional probiotics are used as either functional foods or as supplements, whereas NGPs are mainly used as therapeutics and hence are subject to the full range of registration processes and clinical trials. This article describes the issues and regulatory processes in the development and registration of next-generation probiotics, and their potential for application in aquaculture.

In 1987, ICAR-CIFA initiated research on the culture and production of freshwater pearls and since then it has been working towards the development of the technology of producing pearls in freshwater environments. Though the breeding protocol for seed production of Lamellidens marginalis is under progress, the culture practice for pearl production has already been standardised. This article describes the culture practices used for freshwater pearl farming in India, including site selection, implant techniques, post-operative care and growout conditions. Challenges and future prospects of the industry are also discussed.

The cultivable small- to medium-sized bagrid catfish Mystus gulio is an estuarine species sold as a high-priced food fish in retail markets in cities and towns of southern West Bengal. M. gulio is a good addition to mixed species culture-based fisheries in canals in the Indian Sundarbans region. It adapts and grows well in freshwater ponds and is recommended for freshwater fish culture in areas of the Sundarbans vulnerable to saline water intrusion. This article describes the seed collection, nursery and grow-out practices of M. gulio as practiced in modified-extensive mixed culture systems in West Bengal, India.