Laboratory challenges and a case-control study were used to determine the effects of EHP infection on two Vibrio diseases: acute hepatopancreatic necrosis disease (AHPND) and septic hepatopancreatic necrosis (SHPN).
Few could argue that a reduction in sea lice-fighting chemicals isn't a win for the fish and for the environment. The downside, however, is that increasing numbers of cleaner fish are being caught for use on salmon farms.
This article from Australia’s CSIRO details the "race" to breed oysters genetically predisposed to resist Pacific Oyster Mortality Syndrome (POMS), a disease that is harmless to humans but so lethal to oysters that it can kill more than 90 percent of a crop of millions of animals within days.
The Japanese eel (Anguilla japonica) is cultured in ponds in Japan, China, the Republic of Korea and other countries. Ongoing research is addressing knowledge gaps in the domestication, controlled breeding and nutritional requirements of the species.
Accurate PCR testing of shrimp seedstock assures shrimp farmers that their seedstock is clean of major diseases. Ring tests verify that labs conducting PCR testing are obtaining correct, reliable and reproducible results when testing for specific shrimp diseases.
Organic matter decomposition causes most of the water quality issues in aquaculture ponds. Bacterial populations are the primary organisms of decay in an aquaculture system, including its organic matter.
Shrimp nursery systems offer significant potential for compensatory growth after juveniles are transferred to ponds for final grow-out. Nursery feed selection and their management are critical components of shrimp nursery systems.
Shrimp nursery systems offer the shrimp industry an important opportunity to increase profits, by helping produce strong, healthy and uniform juveniles with significant potential for compensatory growth after their transfer for final pond grow-out. Biofloc technology and water quality are critical components of shrimp nursery systems.
La limpieza es parte de la gestión diaria para asegurar condiciones de cría adecuadas, pero ocasionalmente se requiere tratamiento adicional del agua para mejorar aún más su calidad. Un desinfectante como el percarbonato de sodio puede reducir la carga bacteriana.
Shrimp nursery systems offer an important opportunity to increase profits. Properly designed and operated nurseries are highly biosecure facilities to grow postlarvae at very high densities.
EU legislation requires farmed fish be spared unnecessary pain, distress or suffering at slaughter, and efficient manual and automated systems have been developed to help achieve this goal. What’s more, longer shelf life and improved flesh quality have been reported.
Cleaning is part of the daily management to ensure adequate rearing conditions, but additional water treatment is occasionally required to further improve the water quality. A disinfectant like sodium percarbonate can reduce the bacterial load.
An over-reliance on medical and chemical controls, along with warming waters, led to a surge in sea lice. With such treatments waning in effectiveness, operators turn to other, safer measures.
The presence of AHPND-Vibrio parahaemolyticus can be detected both in fecal DNA samples and in the enriched bacterial broth with samples of enrichment broth showing increased sensitivity.
This study tested five diets formulated with increasing levels of methionine (Met) and Met + cysteine (Cys) and their effect on growth performance of juvenile Pacific white shrimp stocked at 50, 75 or 100 animals/m2 in a green water system.
Arun Dhar, Ph.D. will attempt to fill the “big shoes” of Dr. Donald Lightner at the University of Arizona’s Aquaculture Pathology Laboratory, where the shrimp disease EMS was diagnosed.