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. 2009 Mar 26;10:26. doi: 10.1186/1471-2199-10-26

Table 3.

Effect of tick in vivo dsRNA gene knockdown treatments on female tick survival and subsequent reproduction fecundity by targeting Drosophila homologues described in Table 2

dsRNA treatment Average (5 replicates per treatment) qRT-PCR % knockdown (average 3 replicate reactions)
Treatment R. microplus target BmiGI2 ID D. mel homologue Tick survival (days) Egg output (g) Egg morphology (see Figure 6) Days from laying to larval hatch % larval hatch Viscera (adult ticks) Eggs

dsRNA control (MEGAScript) NA* NA* 16.4 0.118 normal 26.9 69.8
PBS injection NA* NA* 15.0 0.107 normal 26.5 62.0
No injection NA* NA* 14.8 0.128 normal 27.1 64.9
Actin TC12168 NA* 16.2 0.134 normal 26.3 65.8
Proteasome and ubiquitin TC6372 Ubiquitin-63E 10.0 0.010 deformed NL± 0.0 95.6 ND§
TC9852 Proteasome 26S subunit ATPase 17.0 0.116 deformed NL± 0.0 98.0 76.0
TC10417 Rpt 1 16.4 0.130 normal 26.2 65.1 94.0 ND§
TC13930 Tat-binding protein-1 16.4 0.127 slow development 32.9 0.4 99.0 76.0
Ribosome and protein synthesis TC5762 string of perls 17.6 0.129 deformed NL± 0.0 99.9 100.0
TC9037 Ribosomal Protein L11 14.4 0.110 deformed NL 0.0 21.3 98.9
TC12306 Ribosomal protein L8 17.0 0.094 deformed NL± 0.0 99.2 ND§
TC12393 Ribosomal protein S13 16.6 0.135 deformed NL± 0.0 99.0 ND§
DNA binding TC6116 Histone H3.3A 15.8 0.114 slow development 30.7 3.1 97.6 100.0
TC12182 Histone H3.3A 16.4 0.121 normal 27.8 35.2 99.2 94.7

#LSD (P = 0.05) 2.1 0.029 1.3 17.7

*NA (not applicable) – control injections (no dsRNA treatment and R. microplus actin control)

± NL (no larvae) indicates no larvae hatched

§ ND (not done) indicates insufficient total RNA to undertake RT-PCR due to poor egg output.

Tat-binding protein 1 had a nil z score in the D. melanogaster study and string of perls had a z score <3 [43]

#LSD = least significant difference values