Partnership for Aquaculture Development in Timor-Leste: Looking back, looking forward

In 2012, the National Directorate of Fisheries and Aquaculture (NDFA), Ministry of Agriculture and Fisheries (MAF) Timor-Leste, developed the National Aquaculture Development Strategy (NADS) 2012–2030 with technical assistance from WorldFish. The New Zealand Ministry of Foreign Affairs and Trade (NZ MFAT) provided funding to support implementation of NADS through the Partnership for Aquaculture Development in Timor-Leste (PADTL) project (2014–2019).

Genetic diversity of tilapia lake virus genome segment 1 from 2011 to 2019 and a newly validated semi-nested RT-PCR method

The gene of RNA viruses, encoding RNA-directed RNA polymerase (RdRp) is relatively conserved due to its crucial function in viral genome replication and transcription making it a useful target for genetic diversity study and PCR detection. In this study, we investigated the genetic diversity of 21 tilapia lake virus (TiLV) genome segment 1 sequences predictively coding for RdRp subunit P1. Those sequences were obtained from infected fish samples collected in Ecuador, Israel, Peru, and Thailand between 2011 and 2019 (nine sequences from this study and 12 sequences from GenBank).

Report of the 2nd Timor-Leste National Aquaculture Forum

The Timor-Leste National Aquaculture Development Strategy (NADS) 2012–30, which was developed by the Ministry of Agriculture and Fisheries (MAF) with technical assistance from WorldFish, emphasizes implementation through joint ventures between government, INGOs, NGOs and the private sector to realize its success. The 2nd Timor-Leste National Aquaculture Forum was held on 8 August 2019 in Dili. Attended by 106 participants from a diverse range of stakeholders including government, non-government, private sector organizations and farmer groups.

Effect of dietary carbohydrate to lipid ratio on performance of Nile tilapia and enhancement of natural food in pond aquaculture

This study tested the effect of two diets differing in carbohydrate to lipid (CHO:LIP) ratio (4.7 vs. 19.5 g/g) on the contribution of natural food and the total fish production in tilapia ponds. Eight ponds, each divided into three equally sized compartments, were assigned to one of the two diets, which differed in CHO:LIP ratio but had the same digestible protein to digestible energy (DP:DE) ratio (15.5 and 15.6 g/MJ). Ponds were fed equal amounts of crude protein. Three feeding levels (no, low and high) were nested in each pond in a split plot design.

Different levels of probiotics affect growth, survival and body composition of Nile tilapia (Oreochromis niloticus) cultured in low input ponds

A 7-month experiment was carried out to determine the effects of different levels of probiotics (baker's yeast (Saccharomyces cerevisiae) and Bacillus subtilis) on Nile tilapia (Oreochromis niloticus) reared in low input ponds.

Effects of aflatoxin B1 on reproductive performance of farmed Nile tilapia

This study evaluated the effect of dietary aflatoxin B1 (AFB1) on growth, milt and egg quality in matured Nile tilapia (Oreochromis niloticus). Triplicate groups of Nile tilapia (initial body weight 24.1 ± 2.6 g) were fed with either of four diets (Diets 1 to 4) designed to contain 0, 20, 200 and 2000 μg AFB1 kg−1 diets for 24 weeks. After 24 weeks of AFB1 exposure, growth was significantly (P <0.05) different between the control and the AFB1 exposed treatments in both sexes.

Selective breeding trait preferences for farmed tilapia among low-income women and men consumers in Egypt; Implications for pro-poor and gender-responsive fish breeding programmes

A number of studies have highlighted the promising growth of Egyptian tilapia aquaculture and the role of genetically improved strains in this development, such as the Abbassa Nile tilapia (Oreochromis niloticus, Linneaus, 1758). However, few studies have explored the link between aquaculture development and changes in fish demand among low-income consumers.

Better management practices manual for smallholders farming tilapia in pond-based systems in Zambia

Tilapia is one of the most popular fish species for farming and is second in terms of volume after carps. WorldFish has been working for decades on fish genetic improvement and dissemination activities across Asia and Africa. Building on this knowledge, the WorldFish Strategy (2017–2022) and CGIAR Research Program on Fish Agri-Food Systems (FISH) (2017–2022) are providing a combination of support to accelerate fish breeding, and improvement programs and increasing the impact of dissemination of improved fish breeds.

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