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Siphonophores add enough functionally official zooids that will be homologous to free-living polyps or medusae twenty-seven (Fig. 1 ). Physalia physalis belongs to Cystonectae, an effective clade that’s aunt to all or any other siphonophores 8 . In the much time-stemmed cystonects (the cystonects except for Physalia physalis) gastrozooids (eating polyps) develop once the buds in the prior of your own nest as they are transmitted on the rear because of the an enthusiastic elongating base, while you are gonodendra (reproductive structures) come individually along side base 28 . In most cystonects, the fresh new gonodendra is material formations, that features gonophores (less medusae, results an excellent gonad), palpons (derived gastrozooids, you to run out of tentacles for the cystonects), and you can nectophores 27 . (more…)