AGING IN MODULAR ORGANISMS: ECOLOGY OF ZOOID SENESCENCE IN STEGINOPORELLA SP. (BRYOZOA; CHEILOSTOMATA)
AGING IN MODULAR ORGANISMS: ECOLOGY OF ZOOID SENESCENCE IN STEGINOPORELLA SP. (BRYOZOA; CHEILOSTOMATA)
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模块化生物体的衰老：Steginoporella SP 中动物衰老的生态学。
DOI：
10.2307/1541144
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
J. Jackson
中科院分区：
文献类型：
--
作者：
S. Palumbi;J. Jackson
克隆动植物的模块化结构可能会导致某些克隆成分的生理退化，而与整个克隆的年龄或大小无关。因此，衰老并不总是导致死亡(就像孤立生物体的情况一样)，而是导致表现出不同程度的模块退化的菌落区域的拼凑。在牙买加神秘的珊瑚礁环境中，唇口苔藓虫的较老的动物园类。与年轻的动物相比，它们表现出摄食和再生能力的恶化，更容易受到表面生物的污染，并含有更多储存的代谢废物。特别是，近端部分破碎的菌落边缘再生较慢，允许其他结壳物种过度生长，这些结壳物种通常被燕麦球藻旺盛的远端部分过度生长，从而过度生长衰老部分。由此可见，虽然燕麦属的球藻Sp.是牙买加暗礁环境中数量最多的苔藓虫，它只能占据短暂的空间…
The modular construction of clonal plants and animals can lead to physiological deterioration of some clonal components independent of the age or size of the clone as a whole. As a result, senescence does not invariably lead to death (as is the case for solitary organisms), but rather to a patchwork of colony areas exhibiting differing degrees of modular deterioration. In Jamaican cryptic reef environments, older zooids of the cheilostome bryozoan Steginoporella sp. exhibit deterioration in feeding and regenerative abilities, are more heavily fouled by epibionts, and contain more stored metabolic waste products when compared to younger zooids. In particular, slower regeneration of broken colony margins in proximal sections allows other encrusting species, which are normally overgrown by the vigorous distal sections of Steginoporella sp., to overgrow senescent sections. Thus, although Steginoporella sp. is the most abundant bryozoan in Jamaican cryptic reef environments, it can occupy space only ephemerall...