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Phylogenetic tree and schematic of primary protein structures of S. furcifera vitellogenin receptor (VgR) and VgRs in other insects. (A) Phylogenetic tree constructed with MEGA 5.0 using the neighbor-joining method with a bootstrap of 1,000 replicates, using Caenorhabditis elegans (CeVgR, AAD56241.1) as an outgroup. (B) Typical domains of SfVgR and VgRs in other insects. The red triangle stands for amino acid sequence of SfVgR.
