JEM3-D8 MT743247, UIX27087 (WT dead at 8 ppm diazinon) ; JEM3-A500 (resistant, alive at 500 ppm diazinon) MT743248, UIX27088, (ATT (isoleucine) ->AGT (serine) at a residue that aligns between residue 49 (glutamate) and 50 (glycine) of the mature AChE protein of Torpedo
(Below N is a link to NCBI taxonomic web page and E link to ESTHER at designed phylum.) > cellular organisms: NE > Eukaryota: NE > Opisthokonta: NE > Metazoa: NE > Eumetazoa: NE > Bilateria: NE > Protostomia: NE > Ecdysozoa: NE > Panarthropoda: NE > Arthropoda: NE > Chelicerata: NE > Arachnida: NE > Acari: NE > Parasitiformes: NE > Ixodida: NE > Ixodoidea: NE > Ixodidae: NE > Hyalomminae: NE > Hyalomma: NE > Hyalomma marginatum: NE
LegendThis sequence has been compared to family alignement (MSA) red => minority aminoacid blue => majority aminoacid color intensity => conservation rate title => sequence position(MSA position)aminoacid rate Catalytic site Catalytic site in the MSA VVVETVNGPVRGFVARSPLGKSVGVFYGIPYARPPTGQRRFDRAEIIEEP WTDVLDATVKPASCVQVLDTFYGNFSGSIMWNANTELSEDCLKLNVWTPG EPSTAEPPLAVLVWIYGGGFYGGTSTLDIYDARTLVSEEDVIVVSMNYRV ASLGFLSFGNETLPGNAGLHDQYLALRWVQENIACFGGDPNRVTLFGESA GAVSVGLHVLSPLSKPLFHRVILQSGSPTAPWGFQDTDTARKEAKRLATA LGCPDGLDQDTLDCLRRKNPEEIVLKEANNSGIVDFPFVPVVDGLFLPDT PQALTDEGSFARNISVMLGSNLNEGSWFVQYFFGLPVTDERPEVTKENFT AALESLDPSLRTTPLSEIMNMYTAGEIPSTSAEILKALDSIVGDYHFTCP VVQWADVLTRAGIPVYEYVFAHRSSRNPWPEWMGVIHGEEMAFVFGQPLN DTNGYSEEDKNLSRRLMR
In the present study, the acaricide susceptibility status of Hyalomma marginatum in Morocco was investigated in the Rabat-Sale-Kenitra region using the Larval Packet Test. The overall LC(50) value for diazinon and amitraz was 115 ppm (95% CI: [104; 125]) and 22 ppm (95% CI: [21; 23]), respectively. The LC(50) values varied significantly between the nine sampled locations (P<0.001) ranging from 75 ppm (95% CI: [65; 84]) in Ouelmes to 179 ppm (95% CI: [139; 201]) in Jorf El Melha for diazinon and from 18 ppm (95% CI: [15; 21]) in Skhirat to 28 ppm (95% CI: [24; 31]) in Ouelmes for amitraz. Sequencing of the target-site of diazinon, acetylcholinesterase 1 (AChE1), indicated that previously reported resistance mutations in AChE1 were absent in ticks from Jorf El Melha surviving 500 ppm diazinon. This study is the first report on the H. marginatum susceptibilty status to the most frequently used acaricides in Morocco and indicates that acaricide tick resistance is emerging.