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Plot of the Eigen-values for the two first components of the principal component analysis (PCA) performed on Culex quinquefasciatus populations from Galápagos Islands and mainland Ecuador. IS, Isabela; SX, Santa Cruz; SC, San Cristobal; BA, Baltra; FL, Floreana; MEN, mainland Ecuador North; MES, mainland Ecuador South; MEG, mainland Ecuador Guayaquil.
