. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. UNDAMAGED CONTROL. Figure 3. 4/8-damage Experiment: median percentage of colony re- gions producing oocytes or spermatocytes in 4/8-trim and control colonies 16 days after damage. Numbers are the median percentage of colonies producing spermatocytes or oocytes. The frequency of reproductive col- onies varies in 4/8 damaged colonies relative to control colonies (X2 = , P = ): proximity to damage does not significantly affect reproductive timing (X2 = P = ). Proximity to damage is clearly a strong effect, th
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. UNDAMAGED CONTROL. Figure 3. 4/8-damage Experiment: median percentage of colony re- gions producing oocytes or spermatocytes in 4/8-trim and control colonies 16 days after damage. Numbers are the median percentage of colonies producing spermatocytes or oocytes. The frequency of reproductive col- onies varies in 4/8 damaged colonies relative to control colonies (X2 = , P = ): proximity to damage does not significantly affect reproductive timing (X2 = P = ). Proximity to damage is clearly a strong effect, the median percent of reproductive colonies is double adjacent to the damaged edge in comparison to the undamaged sides of the colony (Fig. 2). The pattern of reproduction in the 4/8-damaged col- onies was different from the 1/2-damaged colonies. All the colonies were sampled 16 days after the edge was trimmed. Although a higher proportion of trimmed col- onies than untrimmed were reproductive, there was no regionalization of reproduction within the damaged col- onies (Fig. 3). Our expectation was that, like the 1 /2-dam- aged colonies, reproduction would be localized and prox- imal to the trimmed edges. Instead, reproduction was uniformly accelerated in all zooids sampled, irrespective of their proximity to the damaged edge. The log-linear test comparing the 4/8-damage and their controls detected no significant differences in the within colony variation, but a highly significant treatment effect, confirming a generalized increase in reproductive activity in the 4/8 damage colonies (Fig. 3). Effects of crowding by conspecifics In paired colonies sharing a crowded edge, the response of colonies was analogous to the 1 /2-damage experiment. Zooids on the obstructed side of a colony showed a higher median percent reproduction than zooids from the unob- structed side of the colony at 8-9 days (Fig. 4). For colonies in contact for less than eight days, there were no significant differe
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