VARIABLE EFFECTS OF ASCIDIAN COMPETITORS ON OYSTERS IN A FLORIDA EPIFAUNAL COMMUNITY
VARIABLE EFFECTS OF ASCIDIAN COMPETITORS ON OYSTERS IN A FLORIDA EPIFAUNAL COMMUNITY
复制标题
DOI：
10.1016/0022-0981(93)90183-o
复制
发表时间：
1993-01-01
影响因子：
2
通讯作者：
YOUNG, CM
中科院分区：
文献类型：
--
作者：
DALBY, JE;YOUNG, CM
人们通常认为，固着动物是在被其他动物压倒时死亡的。三个沉降板实验，以确定是否海鞘过度生长减少牡蛎，牡蛎说，在佛罗里达表观动物群落的生存。每个实验都在不同的条件下进行。海鞘在两个实验中减少了活牡蛎的数量，但在第三个实验中增加了数量。海鞘在一个实验中对牡蛎的大小没有影响，但在另外两个实验中增加了大小。因此，海鞘对牡蛎没有一致的影响。在所有实验结束时，在海鞘下发现了许多活牡蛎。海鞘下面的缝隙允许水流向下面的牡蛎，这可以解释牡蛎的生存能力。
It is often assumed that sessile animals dic when they are overgrown by others. Three settling plate experiments were run to determine whether ascidian overgrowth reduces the survivorship of the oyster, Ostrea equestris Say, in a Florida epifaunal community. Each experiment was run under a different set of conditions. Ascidians reduced the number of living oysters in two experiments but enhanced the number in a third. Ascidians had no effect on oyster size in one experiment, but enhanced size in the other two. Thus, there was no consistent effect of ascidians on oysters. At the end of all experiments, many living oysters were found under ascidians. Gaps beneath ascidians permitting water flow to underlying oysters may explain the ability of oysters to survive.