Increasing attention is being paid to the welfare of decapod crustaceans. Legislation exists for their humane slaughter in several countries and this is being debated in others. Electrical stunning may have potential for humane slaughter of crustaceans in some circumstances, although scientific data on the effectiveness of electrical stunning when applied to various species are limited. Assessment criteria for effective stunning have so far been based mainly on behavioural assessments, but th...
The major aquatic interface between host and environment in teleost finfish species is the gill. The diversity of this infraclass, high complexity of the organ and direct exposure to the surrounding environment make it an ideal candidate for furthering our understanding of the intwined relationships between host and microbiome and for monitoring health status in aquaculture practices. Capturing the structure and diversity of bacterial communities from this low biomass, ‘inhibitor-rich’ tissue...
The current study investigated how different fasting and refeeding regimes would impact Nile tilapia growth performance, histopathological examination, and gene expression of myostatin, myogenin, GH, IGF-1, and NPYa. Nile tilapia fish (n = 120) were randomly allocated into four groups, including the control group fed on a basal diet for 6 weeks (F6), group A starved for 1 week and then refed for 5 weeks (S1F5), group B starved for 2 weeks and then refed for 4 weeks (S2F4), while group C starv...
This study set out to characterise the fauna and biology of parasites of the barnacle Semibalanus balanoides. The dominant parasite species was identified as a microphallid metacercariae Maritrema sp. and was determined to be the focus of study. Systematic sampling was conducted to investigate the spatial distribution patterns of Maritrema sp. in S. balanoides populations across different latitudes, habitat types and scales; and to explore the factors affecting the discovered patterns. An agg...
Antibiotic compounds play an important role in the control of bacteria disease outbreaks on fish farms. Yet, the impact of commercially licensed antibiotics on the diversity and composition of the gut microbiome in some farmed fish species remains unclear. The following study explored the effect of a low-level oxytetracycline treatment on the gut microbiome community in rainbow trout (Oncorhynchus mykiss) (average weight 152.8 ± 8.9 g). In this study, fish were fed diets with or without oxyte...
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