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 second quarter of 2022 and the original and updated reports can be accessed at the QAAD page. 

NACA welcomed five delegates from India on an aquaculture training and exposure visit from 31 October to 4 November. The visit began with a discussion at the NACA Secretariat on Thai mariculture, the recently established International Artemia Aquaculture Consortium, and better management practices concerning hatchery production and use of live feeds. The delegates left Bangkok the next day to visit seabass cage and pond culture and a shrimp nursery in the Chachengsao area and Bangprakong River. The following day they travelled to the Rayong Coastal Aquaculture Center and visited local farm sites before overnighting in Chantaburi. On the final day they visited the Kung Krabae Bay Royal Development Study Center and mangrove walk; and a freshwater fish farm to observe intensive carp and pangasius culture.

In this issue:

Sustainable livelihood model for coastal families through seabass fingerling production: A success story; A pilot of integrated mangrove-aquaculture as a nature-based solution to mitigate climate change in West Bengal, India; Recreational fisheries in Uttarakhand; Soft-shell mud crab production for export in Purba Medinipur, West Bengal, India; Conducting artificial fertilisation, hatching and spawn development of Indian shad, Tenualosa ilisha: Pathfinding hilsa domestication; NACA Newsletter.

Hilsa (Tenualosa ilisha) is highly favoured as a food fish by consumers but has a complex life cycle and has proven very difficult to breed. Domestication of hilsa requires extra effort while nurturing the larval stage, which is very sensitive and susceptible to mortality. This article describes standardised protocols developed by the Kalyani Field Station of the ICAR-CIFA Regional Research Centre, Rahara, for artificial fertilisation, incubation and larval rearing of hilsa, as the first steps towards the goal of hilsa domestication and culture.

In West Bengal wild-caught juvenile and sub-adult orange-clawed mud crabs Scylla olivacea are purchased by farms for grow out, fattening, and the production of soft-shell crab for export. This article describes the management practices for producing soft-shell mud crab at National Aqua Farm, using individual box enclosures, and their subsequent processing and packing for export. Details of the crab rearing unit are provided, along with observations of moulting cycles and post-harvest management of soft shell mud crab.