2022
DOI: 10.1016/j.aquaculture.2021.737340
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Sensitivity assessment to azamethiphos by time-to-response bioassay and biomarkers in the sea louse Caligus rogercresseyi

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Cited by 6 publications
(5 citation statements)
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“…Interestingly, most of the trypsins identified in this study were differentially expressed after drug exposure and according to resistant or susceptible populations (46 out of 60 genes), supporting the hypothesis of the role of trypsins in delousing drug response and expanding this to azamethiphos, deltamethrin, and cypermethrin. These results also support the hypothesis related to considering trypsin genes as biomarkers for delousing drug susceptibility, which was suggested for C. rogercresseyi in novel bioassays using azamethiphos [36], especially trypsin-2 and trypsin-5, which were also validated by qPCR. In the qPCR validation of these two genes, the basal expression levels were also variable in control samples for both S/R populations (Figure 4).…”
Section: Discussionsupporting
confidence: 85%
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“…Interestingly, most of the trypsins identified in this study were differentially expressed after drug exposure and according to resistant or susceptible populations (46 out of 60 genes), supporting the hypothesis of the role of trypsins in delousing drug response and expanding this to azamethiphos, deltamethrin, and cypermethrin. These results also support the hypothesis related to considering trypsin genes as biomarkers for delousing drug susceptibility, which was suggested for C. rogercresseyi in novel bioassays using azamethiphos [36], especially trypsin-2 and trypsin-5, which were also validated by qPCR. In the qPCR validation of these two genes, the basal expression levels were also variable in control samples for both S/R populations (Figure 4).…”
Section: Discussionsupporting
confidence: 85%
“…On the other hand, regarding the luciferase assay, it was possible to validate the trypsin 2-like target site for bantam, which was a technique previously validated for other miRNA-mRNA binding sites [47]. Thus, the regulation of the expression of trypsin-2 by bantam adds more value to the interest for this gene, which has been suggested as a biomarker for drug sensitivity in C. rogercresseyi [36]. Future investigation will be conducted to evaluate gene-miRNA interaction through in vivo assays, and to explore if bantam could reduce the expression of the trypsin-2 gene, altering the molecular response of the sea louse C. rogercresseyi to delousing drugs.…”
Section: Discussionmentioning
confidence: 99%
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“…Currently, the main sea louse control methods are based on delousing drugs such as pyrethroids, organophosphates, and chitin inhibitors [ 52 , 53 ]. However, a reduction in the efficacy of these compounds has already developed in C. rogercresseyi populations [ 54 , 55 , 56 , 57 , 58 ]. Thus, several studies have investigated the underlying mechanisms involved in sea lice response to delousing drugs, suggesting potential resistance mechanisms [ 10 , 11 , 59 , 60 , 61 , 62 ].…”
Section: Introductionmentioning
confidence: 99%
“…(Bravo et al, 2013). Estos ectoparásitos han desarrollado mecanismos de resistencia debido al uso constante y excesivo de estos fármacos (Arriagada et al, 2020;Bravo et al, 2015b;Sáez-Vera et al, 2022). Por lo tanto, las vacunas como método de control profiláctico, es una alternativa sustentable para la industria salmonera.…”
Section: Caligidosis Y Sus Métodos De Controlunclassified