Fish trait preferences: a review of existing knowledge and implications for breeding programmes

Continued growth of the aquaculture sector will rely on the availability of fish with traits that respond to the needs and preferences of these users along the value chain. Such trait responsiveness requires that fish breeding programmes have reliable knowledge of these users’ trait preferences. The present study found from a non-systematic literature review, that no fish breeding programme had reported user preference in their product-profile design.

Assessment of the impact of dissemination of genetically improved Abbassa Nile tilapia strain (GIANT-G9) versus commercial strains in some Egyptian governorates

WorldFish initiated a selective breeding program in Abbassa--Egypt to develop and produce the genetically improved Nile tilapia strain known as “Genetically Improved Abbassa Nile tilapia (GIANT)”, adopting the same technology used for the Genetically Improved Farmed Tilapia (GIFT), in Asia. WorldFish provided the Ninth Generation (G9) broodstock of the GIANT to 11 Broodstock Multiplication Centers (BMC’s) in five governorates; these centres then disseminated improved mixed-sex fry to 160 tilapia hatcheries which supplied all-male fry to 1,500 fish farms in 2017.

Carp Genetic Improvement Programs

The Carp Genetic Improvement Program is the only program of its kind in the world concentrating on catla and silver carp as well as being the largest familybased selection program for rohu. The methods are similar to those used to develop faster growing chickens and livestock that have transformed their respective sectors. This brief highlights the methodology of the carp genetic programs.

Better management practices for genetically improved farmed tilapia (GIFT) in Timor-Leste

Worldwide, the demand for fish continues to grow rapidly. Sustainable intensification and expansion of aquaculture and innovations in fish production systems will be needed to meet this increased demand. It is with this in mind that WorldFish’s 2017–2022 strategy and the CGIAR Research Program on Fish-Agri-Food Systems (FISH) (2017– 2022) have emphasized the need for doubling total food fish production by 2030, particularly in developing countries.

Controlling preharvest maturity in farmed Arctic char: A review from the Canadian perspective

Arctic char, Salvelinus alpinus L. is a promising candidate for aquaculture expansion in Northern Europe, Canada, and the United States because of its excellent growth at low temperature, tolerance to high rearing density, high fillet yield, and superior flesh texture and flavor. To support this industry, several breeding programs in these regions currently focus on selection for growth and delayed maturation. While the growth potential of existing strains has been improved, preharvest sexual maturation remains a problem in this industry.

Single Nucleotide Polymorphisms (SNPs) reveal sibship among founders of a Bangladeshi Rohu (Labeo rohita) breeding population

Rohu (Labeo rohita) is a significant freshwater aquaculture species with approximately 1.8 Mt produced annually. Fin clips obtained from the founders of a newly established Bangladesh-based breeding population (~140 fish from each of the Halda, Jamuna, and Padma rivers) were used to identify 9157 SNPs and 14 411 silicoDArT markers using the Diversity Arrays Technology (DArT) genotyping-by-sequencing platform known as DArTseq. After quality control, 1985 SNPs were retained and used to examine population structure within and among river systems.

Sibship assignment to the founders of a Bangladeshi Catla catla breeding population

In terms of quantity produced, Catla catla is the sixth most important finfish aquaculture species produced globally in 2015. It is primarily grown in South Asia, often on a small scale in polyculture with other species. In spite of its economic importance, in a number of countries, including Bangladesh, the quality of catla seed produced in hatcheries has historically suffered from high levels of inbreeding, uncontrolled interspecific hybridisation and negative selection.

CGIAR Research Program on Fish Agri-Food Systems: Annual Report 2018

This annual report provides key results and learning achieved during 2018 in the CGIAR Research Program on Fish Agri-Food Systems (FISH). FISH made significant progress during the year in (a) producing and disseminating a suite of research innovations for sustainable development of aquaculture and fisheries across Africa, Asia and the Pacific, and (b) in moving toward stronger results-based program management through development and adoption of a monitoring, evaluation and learning platform.

The complete mitochondrial genome of a Pabdah catfish, Ompok pabda (Hamilton, 1822)

The complete mitochondrial genome of Pabdah catfish, Ompok pabda (Hamilton, 1822) was determined by MiSeq platform. The genome was 16,512 bp in length, in which canonical 13 protein-coding genes, 22 tRNAs, 2 rRNAs, and a control region (D-Loop) were encoded. The overall A + T (55.10%) content was higher than G + C (44.90%). Total nine genes were located at the L strand, and remaining 28 genes were at the H strand. The start codon of 12 protein-coding genes was ATG, except for COX1 (GTG).

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