Fig. 5.

Phylogenetic tree of HSP90 amino acid sequences of crustaceans. The HSP90 sequences of 8 crustacean species were analysed according to Jukes–Cantor genetic distance model and neighbour-joining method. Tree was rooted using Mytilus galloprovincialis HSP90 as outgroup. The scale bar represents 0.07 substitutions per site. The GenBank accession numbers of the amino acid sequences is provided after each species name, and the cloned E. affinis sequence is identified in bold. Two sequence groups can be defined as copepod HSP90 and decapod HSP90