Sexual propagation by sponge fragments
Sexual propagation by sponge fragments
复制标题
通过海绵碎片进行有性繁殖
作者：
M. Maldonado;M. Úriz
栖息地破碎化意味着许多物种出现在离散的种群中，因此固着物种在新地区定居非常重要。目前尚不清楚幼虫短距离分散的海绵是如何实现这一目标的。由于物理和生物干扰，碎片可能会从海绵上脱落，然后被水流分散并重新招募为独立的个体或群体。因此，当地种群预计具有较高的遗传相关性，但大多数海绵种群具有较高水平的遗传变异性。我们认为这种差异是由分裂和有性生殖之间的相互作用造成的。
Habitat fragmentation means that many species occur in discrete populations, so it is important for sessile species to colonize new areas. It has not been clear how sponges whose larvae disperse over short distances achieve this. Fragments may break off sponges as a result of physical and biological disturbance and are then dispersed by currents and recruited as independent individuals or colonies,. Local populations are expected to have high genetic relatedness as a result, but most sponge populations have high levels of genetic variability,. We suggest that this discrepancy results from an interaction between fragmentation and sexual reproduction.