In 2012, samples collected from 92 AHPNS-affected ponds in the Mekong Delta found a number of Vibrio isolates, with the majority V. parahaemolyticus.
Studies by the University of Arizona Aquaculture Pathology Laboratory identified the causative agent for AHPNS as a unique strain of Vibrio parahaemolyticus bacteria that can produce toxins responsible for the primary pathology in affected shrimp.
Sea lice are a significant threat to the Chilean salmon-farming industry. Chilean salmon farmers also understand that prevention and good management practices based on biosecurity measures are the best tools to minimize outbreaks of disease.
In studies of early mortality syndrome/acute hepatopancreatic necrosis syndrome at an Agrobest shrimp farm in peninsular Malaysia, results indicated that the disease originated with infected postlarvae and quickly spread throughout the farm.
The authors tested the effects of sequencing autotrophic and heterotrophic dominance on water quality levels in a recirculating system raising shrimp. Culture tanks were inoculated with nitrifying bacteria, and chemoautotrophic dominance was maintained.
The meagre is a fast-growing fish species with good feed conversion that is a candidate for expanded aquaculture in the Mediterranean. The challenges of a lengthy adaption to captivity and susceptibility to external parasites are being addressed, and wild-caught broodstock now spawn regularly.
Lab studies with channel catfish and rainbow trout have found that phytogenic feed additives like essential oils can help improve weight gain, feed conversion and immunity to disease.
To meet demand and maintain the sustainability of the shrimp aquaculture industry, commercial synthetic artemia has been developed for use as a bio-secure replacement for live artemia in larviculture.
The Queiroz Galvão Alimentos shrimp farm and hatchery in Brazil have been working with Concepto Azul to implement a disease-prevention and genetic-breeding program that addresses ongoing impacts from infectious myonecrosis virus (IMNV) and other pathogens.
Research continues in the global efforts to identify the cause of acute hepatopancreatic necrosis syndrome in farmed shrimp and find solutions to stop the major losses caused by its spread.
Since 2001, Moana Technologies has worked toward providing domesticated, genetically improved and specific pathogen-free (SPF) black tiger shrimp to farmers in Asia. Based in Hawaii, USA, Moana built a breeding base on wild-caught broodstock from seven locations in Asia.
In studies that used biofloc systems to culture channel catfish, culture tanks were susceptible to episodes of geosmin and 2-methylisoborneol and subsequent bioaccumulation of off-flavors in catfish flesh.
The Inter-American Tropical Tuna Commission Achotines Laboratory in southern Panama is the world’s only facility with nearly year-round availability of tuna eggs and larvae. A study is comparing the reproductive biology, genetics and early life history of yellowfin and Pacific bluefin tuna.
Since Taura syndrome virus was in the Americas when yellow head virus become pandemic in Asia, it is possible TSV prevented shrimp in the Western Hemisphere from infection by materials from Asia containing YHV. To test this idea, the authors evaluated the viral interactions in shrimp preinfected with TSV and then challenged with YHV.
In a laboratory trial, juvenile pangasius given a diet with 0.2 percent potassium diformate (KDF) had better weight gain, feed conversion and survival than fish that did not receive KDF.
Proper management of broodstock nutrition encompasses providing the right amounts of the proper specialized nutrients during the right developmental stages.