Is studying complete mitochondrial genome need biological lab work?
All papers you mentioned have involved biological lab work. They all have sequences specific mitochondrial genome and then have analyzed it with the help of bioinformatics. Sequencing genome requires lot of bench work (wet work or "biological lab work"). Even one of them have mentioned it in abstract itself. 


  The complete mitochondrial genome of Himalayan bee Apis laboriosa, from Mizoram, India, has been sequenced using Illumina NextSeq500 platform and analysed.