Asian shrimp farming industry has experienced massive production losses due to a disease caused by toxins of Vibrio bacteria, known as early mortality syndrome/acute hepatopancreatic necrosis (EMS/AHPND) for the last 5 years. The can cause up 100% cumulative pond within week. objective this study was identify factors associated with AHPND occurrence on farms. A case-control carried out farms in four provinces Thailand. Factors related farm characteristics, management, and water preparation,...

Sea surface temperature (SST) and salinity (SSS) are essential variables at the ocean atmosphere interface when considering risk factors for disease in farmed wild fish stocks. Ecological research has witnessed a recent trend use of digital satellite technologies, including remote-sensing tools. We explored spatial coverage remotely-sensed SST SSS data compared them with situ measurements water temperatures salinity, which led to suggested adjustments its aquaculture research. The were from...

Growth in salmon aquaculture over the past two decades has raised concerns regarding potential impacts of industry on neighboring ecosystems and wild fish productivity. Despite limited evidence, sea lice have been identified as a major cause for decline some Pacific populations west coast Canada. We used count management data from farmed salmon, collected 10 years (2007-2016) Muchalat Inlet region Canada, to evaluate association between recorded farms with infestation levels out-migrating...

Whiteleg (Litopenaeus vannamei) and black tiger (Penaeus monodon) shrimp are the most common farm-based species cultured in Vietnam, but there have been few studies of intensive whiteleg production. The objectives this study were to describe production characteristics identify factors associated with yield systems Vietnam. This included data from farms four Vietnam provinces, collected mid-2014 early 2016. key characteristics, such as length cycle, number quality postlarvae (PL) stocked,...

DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 105:149-161 (2013) - DOI: https://doi.org/10.3354/dao02616 Sea lice infestations on juvenile chum and pink salmon in Broughton Archipelago, Canada, from 2003 2012 Thitiwan Patanasatienkul1,*, Javier Sanchez1, Erin E. Rees1, Martin Krkošek2,3, Simon R. M. Jones4, Crawford W. Revie1 1Atlantic Veterinary College,...

Abstract Mate limitation in dioecious parasite species has the potential to impact population growth. Our focus of interest was influence sex distribution among hosts on reproduction and transmission dynamics for populations ectoparasitic sea lice ( Lepeophtheirus salmonis Krøyer) establishing wild juvenile salmon hosts. The data included more than 139,000 out‐migrating pink Oncorhynchus gorbuscha (Walbaum)) chum keta British Columbia, Canada, sampled over nine years. For almost all years,...

The American lobster (Homarus americanus) fishery is an economically important commercial activity in Prince Edward Island (PEI), Canada. This requires substantial amounts of bait, resulting emerging conservation challenge. To address this issue, alternative manufactured using fresh and process pelagic fish, dehydrated corresponding to 75% less fish than traditional bait has been developed by Bait Masters Inc. performance the compared that was evaluated a field study. trial conducted eight...

This retrospective study aimed to evaluate the performance of hormone treatment protocols, determine factors associated with pregnancy success after treatment, and compare cost-efficiencies two types among cyclic noncyclic anestrous dairy cows. The clinical records 279 cows who received for artificial insemination (AI) from 64 herds in western region Thailand were obtained Kasetsart University Veterinary Teaching Hospital January August 2017. fixed-time AI (TAI) estrus detection before...

This retrospective study aimed to evaluate the performance of hormone treatment protocols, determine factors associated with pregnancy success after treatment, and compare cost-efficiencies two types among cyclic noncyclic anestrous dairy cows. The clinical records 279 cows that received for artificial insemination (AI) from 64 herds in western region Thailand were obtained Kasetsart University Veterinary Teaching Hospital January August 2017. fixed-time AI (TAI) estrus detection before...

Cryptosporidium spp. has been associated with foodborne infectious disease outbreaks; however, it is unclear to what extent raw oyster consumption poses a risk public health. Control of in shellfish harvest seawater Canada not mandatory and, despite relay/depuration processes, the parasite can remain viable oysters for at least month (depending on initial loads and characteristics). Risks human infection illness from exposure contaminated oocysts were assessed Bayesian framework. Two data...

This study aimed at estimating parameters representing between-farm transmission of Salmonid Rickettsial Septicaemia (SRS) in Chile, and developing validating simulation models to predict weekly spread SRS between farms Los Lagos (Region 10), using InterSpread Plus. The model were estimated by analyses the historical outbreak data. incorporated time distance-dependent kernels, probabilities waterborne farms. Seven candidate kernels estimated, with varying maximum distance (15–60 km). Farms...

A mathematical model was used to describe the population of aquatic invasive species, Ciona intestinalis in presence cultured mussel production. differential equation developed represent key life stages: egg, larva, recruit, juvenile and adult. Stage transition rates were calculated from time spent a stage probabilities. Because surface availability for settlement phase is determinant growth, dead adult stages also modelled, together with their drop-off rates. This incorporated temperature...

Current information on biosecurity measures implemented by shrimp farmers in Indonesia is limited. This study describes farmer demographic characteristics, on-farm practices, farm production and disease status, among small medium holder farms Java Island, Indonesia. A questionnaire-based survey was conducted from November 2019 to May 2020 collect data operating various regions of the Island. numerical score assigned for each assessed based whether it a conventional risk factor or protective...

The Prince Edward Island (PEI) mussel industry has faced challenges associated with invasive tunicate species over the past two decades. Field experiments to find suitable mitigation strategies require considerable time and are resource intensive. This study demonstrates application of a mathematical model assess several control against Ciona intestinalis populations under different temperature conditions in production area PEI. A dependent compartmental was used total abundance C....

Event Abstract Back to A tool predict sea lice levels on salmon farms in Chile Sophie St-Hilaire1*, Thitiwan Patanasatienkul1, Jenny Yu1, Anja B. Kristoffersen2, Henrik Stryhn1, Crawford Revie1, Rolando A. Ibarra3, Alfredo Tello3 and Gregor McEwan1 1 University of Prince Edward Island, Department Health Management, Canada 2 National Veterinary Institute, Norway 3 SalmonChile, Intesal, Caligus rogercresseyi is a host-dependent parasite. Farmed fish become infected with the free-swimming stage...

Event Abstract Back to Development of a Sea Lice Surveillance Ontology for Data Integration from Wild Salmon Monitoring Programs on the West Coast Canada Thitiwan Patanasatienkul1* and Crawford W. Revie1 1 University Prince Edward Island, Health Management, lice are parasitic copepods family Caligidae, which infest both wild farmed salmonids. They feed skin, mucus, blood hosts, causing wounds and, sometimes, infections (Mustafa 1997). Some species (e.g. Lepeophtheirus salmonis) can cause...

Event Abstract Back to Suitability of remotely-sensed sea surface temperature for aquaculture research: comparison with in situ records from salmon farms British Columbia (BC), Canada Krishna Thakur1*, Crawford Revie1, Raphael Vanderstichel1 and Thitiwan Patanasatienkul1 1 UPEI, Health Management, In recent years, ecosystem research has witnessed an increasing trend towards the use digital satellite technologies, such as remote-sensing tools [1], which detect classify objects and/or...