Jackson J B, Buss L
Department of Earth and Planetary Sciences, The Johns University, Baltimore, Maryland 21218.
Proc Natl Acad Sci U S A. 1975 Dec;72(12):5160-3. doi: 10.1073/pnas.72.12.5160.
Species of ectoprocts and solitary encrusting animals were subjected in aquaria to homogenates of 11 sympatric species of sponges and colonial ascidians. Five of the nine sponge species and one of the two ascidian species exhibited species-specific allelochemical effects. Evidence suggests that alleochemical provide a wide-spread, specific, and complex mechanism for interference competition for space among natural populations of coral reef organisms. The existence of such species-specific mechanisms may provide a basis for maintenance of diversity in space-limited systems in the absence of high levels of predation and physical disturbance.
将苔藓虫和单独附着生长的动物物种置于水族箱中，使其接触11种同域分布的海绵物种和群体海鞘的匀浆。9种海绵物种中的5种以及2种海鞘物种中的1种表现出物种特异性的化感效应。有证据表明，化感物质为珊瑚礁生物自然种群间的空间干扰竞争提供了一种广泛、特定且复杂的机制。这种物种特异性机制的存在可能为在缺乏高水平捕食和物理干扰的情况下，维持空间有限系统中的多样性提供基础。
