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Fig. 3 | BMC Evolutionary Biology

Fig. 3

From: Positive selection in octopus haemocyanin indicates functional links to temperature adaptation

Fig. 3

Haemocyanin based phylogenetic relationships among the analysed octopods. Bayesian phylogenetic trees based on the nucleotide alignments of a) a partial haemocyanin region between FU f and FU g b) a partial haemocyanin region within FU g (see Fig. 2). Note that within FU g two distinct isoforms were present causing a split in the phylogeny. Nodes were labelled with posterior probabilities and maximum likelihood bootstrap support values following a backslash, above a threshold of 0.7 or 0.5 respectively. Asterisks mark values of 100. Red italic numbers below branches indicate positive selection of a particular site at this branch inferred from TreeSAAP analysis (refer to Table 1). Identical colours mark octopods of the same climatic origin. Sample codes are indicated in brackets and followed by the clone identifier.

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