However, the slopes of the regression lines for autozooid number as a function of days after metamorphosis were statistically indistinguishable; an indication that both groups of colonies were growing at about the same rates, despite differences in the absolute number of autozooids at day 14 [ILLUSTRATION FOR FIGURE 5 OMITTED].
The observed difference in the rates of autozooid budding is probably a result of a delay in the time to first bud, because the increased larval swimming period undoubtedly uses energy that would otherwise go to form the first autozooid.
Growth in these experiments was estimated by counting the number of autozooids and bifurcations in a colony.
Rachis pieces of about 5 x 5 mm (including autozooid polyps) were excised from colonies anesthetized in a 1:1 mixture of 0.
To ensure that the uncoupling agents did not interfere directly with the luminescence effector of the photocytes, the latter were dissociated by incubating photocyte-rich autozooid tissues for 1 h in a medium containing 37.
The polyps are dimorphic, featuring both autozooids and siphonozooids.
Cross-sections of the Sarcophyton auritum polypary 2-3 mm below the surface featured a uniformly pale-turquoisestained coenenchyme, found between the autozooids (hereafter termed "polyps") and the siphonozooids (Fig.
In this analysis, we considered only the connections on lateral walls of functional zooids (autozooids) as indicators of integration, and not those that may be present within modified zooids such as ovicells and avicularia, as feeding autozooids appear to be the main source of nutritious resources within the colony, and polymorphs were not present in W.
In the present study, the level of connectedness between functional autozooids did not increase with polymorphism in two species of extant Bryozoa, challenging the legitimacy of assumed positive relationships between levels of within-colony specialization and physiological integration.