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Fig. 7 | BMC Evolutionary Biology

Fig. 7

From: Complete mitochondrial genomes of eight seahorses and pipefishes (Syngnathiformes: Syngnathidae): insight into the adaptive radiation of syngnathid fishes

Fig. 7

Schematic diagram of the phylogenetic relationships of syngnathid groups (a), and phylogenetic analysis of the syngnathids with various brooding structures (b). Cross-sections of the brood pouch, fully enclosed pouch;, enclosed pouch (inverted);, rudimentary pouch with plates and skin-folds;, individual egg compartments;, unprotected eggs (free spawning)

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