Biont


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Biont

 

a separate organism (individual) adapted in the course of evolution to dwelling in a definite environment (biotope). A distinction is usually made between aerobionts (dwellers on land and in the air), hydrobionts (aquatic organisms), geobionts (dwellers in the soil), and parasites (dwellers in other organisms). Organisms capable of living under different conditions are called eurybionts. Organisms living only under narrowly restricted conditions are called stenobionts. Examples of stenobionts are psammobionts (dwellers in sand), petrobionts (organisms living on rocky soil), and bothrobionts (dwellers in holes).

References in periodicals archive ?
However, as shells age (on a growing reef), they are eventually buried, presumably in an anoxic environment closer to the reef interior, thus excluding biont attack, and in a generally more favorable geochemical environment for preservation of calcium carbonate (Hu et al.
Generation A was represented by vegetative asexual bionts that produced zoospores; generation B by vegetative sexual bionts that produced oospores; and generation C by a rudimentary antithetic generation that developed from the fertilized oospore.
However, another possibility is the protective nature of encrusting bionts. That bionts can degrade shell is well known, but bionts as a protective coat have also received some consideration (Kidwell 1986b, Zuschin & Pervesler 1996, Zuschin et al.