Petra R. Quezada‐Rodriguez

ORCID: 0000-0003-3061-4428
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About
Contact & Profiles
Research Areas
  • Aquaculture disease management and microbiota
  • Myxozoan Parasites in Aquatic Species
  • Aquaculture Nutrition and Growth
  • Environmental Toxicology and Ecotoxicology
  • Microbial infections and disease research
  • Parasite Biology and Host Interactions
  • Environmental DNA in Biodiversity Studies
  • Fish Ecology and Management Studies
  • Reproductive biology and impacts on aquatic species
  • Fecal contamination and water quality
  • Amphibian and Reptile Biology
  • Physiological and biochemical adaptations
  • Vibrio bacteria research studies
  • Identification and Quantification in Food
  • Pharmaceutical and Antibiotic Environmental Impacts

Commonwealth Scientific and Industrial Research Organisation
2019-2024

Agriculture and Food
2019-2024

University of Tasmania
2019-2023

Cultura
2016

Abstract Hydrogen peroxide (H 2 O ) is a commonly used treatment for range of parasitic diseases marine finfish, including amoebic gill disease (AGD). While this partially effective at reducing parasite load, H can have detrimental effects on the host under certain conditions. Treatment temperature and dose concentration are two factors that known to influence toxicity ; however, their impact outcome AGD remains unclear. Here, we investigated (8, 12 or 16°C) (750, 1,000, 1,250 mg/L) efficacy...

10.1111/jfd.13110 article EN Journal of Fish Diseases 2019-11-14

The gill mucosal microbiome of Atlantic salmon has a significant impact on health and physiology under homeostatic conditions, but the microbial community may itself be influenced by host genetics, culture system seawater transfer. In this study, two commercial strains salmon, reared in parallel hatchery systems (flow-through -FT recirculation -RAS) was investigated. Samples microbiome, tank biofilm water were collected from fish cohorts at hatcheries following Though commercially equivalent...

10.1016/j.aquaculture.2023.740322 article EN cc-by-nc Aquaculture 2023-11-07

To investigate the relationship between microbial community profiles and gill pathology during a production cycle of Atlantic salmon in two commercial hatcheries.Relationships histology, environmental conditions, microbiome were determined using high-throughput data, including 16S rDNA amplicon sequencing histopathology water quality parameters. Hatchery A used riverine operated mixed system recirculation aquaculture (RAS) flowthrough. B was bore RAS. Melanin deposits, hyperplastic,...

10.1093/jambio/lxac073 article EN Journal of Applied Microbiology 2023-01-20

ABSTRACT Nodular gill disease (NGD) is a serious proliferative condition that affects farmed salmonids, particularly in Europe. While the cause of NGD remains unknown (and maybe multifactorial), various amoebae are often isolated from gills affected fish and can some cases be seen associated with lesions by histopathology. The present study aimed to quantify abundance different amoeba species directly rainbow trout healthy controls. An 18S rRNA amplicon metagenomic approach was employed...

10.1111/jfd.14061 article EN cc-by-nc Journal of Fish Diseases 2024-12-05

Amoebic gill disease (AGD), caused by Neoparamoeba perurans, is a major health challenge for Atlantic salmon aquaculture globally. While freshwater bathing 2 hr effective in reducing infection severity, there need more rapid and lower cost alternatives. To this end, combination of sodium percarbonate (SPC) was examined its treatment efficacy. Initial vitro studies showed reduction amoeba viability when exposed 30 min to containing >500 mg/L SPC. Subsequently, AGD-affected were bathed 16°C...

10.1111/are.14874 article EN Aquaculture Research 2020-09-09

Epitheliocystis, an intracellular bacterial infection in the gills and skin epithelium, has been frequently reported Atlantic salmon (Salmo salar) during freshwater production a number of countries. This study describes prevalence intensity natural epitheliocystis present two strains reared either flow-through (FT) or recirculation aquaculture system (RAS) Ireland. Repeated sampling prior to throughout seawater transfer, histology quantitative real-time PCR were used determine intensity....

10.1111/jfd.13694 article EN Journal of Fish Diseases 2022-08-25
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