Tank effects impact selection responses in shrimp breeding
Separate family rearing can lead to tank-derived environmental effects that are statistically confounded with full-sib family genetic effects in shrimp breeding.
Study: Oral method vaccinates rainbow trout against IHNV
Working on a system for oral delivery of IHNV vaccine via fish feed, researchers' goal is to adapt a proven oral DNA-based vaccine given to salmon in Canada to rainbow trout through encapsulation with a polymer or liposome.
Protein hydrolysates in larval fish nutrition
Protein hydrolysates are currently used as partial substitutes for fishmeal in high-quality artificial diets since their inclusion in feeds promotes growth and survival.
Experimental spawning, larval rearing of lane snapper test diets
As part of the development of rearing procedures at the first commercial marine fish hatchery in Venezuela, a study induced spawning of lane snappers and evaluated the survival of larvae fed rotifers, two microalgae species and enriched artemia.
Whole genome sequencing of aquaculture species
A whole genome sequence allows the identification of candidate genes responsible for production and performance traits for a given species. Ongoing genome projects include programs for Atlantic salmon, Atlantic cod, Pacific oysters, tilapia, catfish and shrimp.
Fishmeal, fish oil not limiting factors for aquaculture
The amount of fishmeal and fish oil used in aquaculture has remained static, while output from aquaculture has increased.
Bacterial testing improves biosecurity at marine hatchery
Microbial surveys of hatchery operations at Oceanic Institute found a strong correlation between hatchery success and cultivable bacteria levels in the water supplied to the larval-rearing systems.
Genetics, environment define crustacean color
Coloration in crustaceans is affected by a combination of factors: diet, environment and genetics. The genes required for coloration are not present in any other animal, but crustaceans use them to create a variety of colors and shell patterns.
Spiny lobster aquaculture
Spiny lobsters have a long, complex life cycle. Growing them through larval stages is a particular challenge. Spiny lobster culture is currently centered in Vietnam, where the industry depends on wild-caught animals for stocking and trash fish for feeding.
Lab evaluation methods quantify probiotic benefits
Due to the inherent complexities of field testing, definitive laboratory-based test methods can better quantify probiotic benefits.
Antimicrobial resistance: Aquaculture to humans, humans to aquaculture?
The transfer of resistance from an aquaculture pathogen into a human enteric bacterium has been demonstrated in research and may be happening in the real-world environment.
Fatty acids in feeds improve growth, lipid profiles of white shrimp farmed at high salinity
A study showed that lipid source and DHA and EPA levels in feeds can influence the growth performance and tail fatty acid profiles of L. vannamei farmed under hypersaline conditions.
Study identifies white spot variants in Sinaloa, Mexico
Mexico's government, shrimp industry and academic community are working to develop strategies to attenuate the effects of white spot virus in Sinaloa. They confirmed eight genotypes.
Flaws in reporting antimicrobial resistance
Improving the methodology of antimicrobial resistance testing and related controls, and the implementation of laboratory ring tests could lead to more reliable information.
Proactive disease management counters ISA, IMN
Although many companies avoid the costs associated with setting up proactive disease management infrastructure, failure to do so can result in losses that far outweigh the costs.
Vibrio contamination in raw oysters controlled by post-harvest treatments
The levels of harmful Vibrio bacteria – a pathogen that multiplies at higher temperatures – in raw oysters depend largely on post-harvest handling.