The Marine Life Information Network

Information on the biology of species and the ecology of habitats found around the coasts and seas of the British Isles


Trait Definition
Host An organism that provides food or shelter for other organisms, e.g. the inhabited symbiont. May be a definitive host infected by an adult stage or an intermediate host infected by life stages (see Lincoln et al., 1998). 
Substratum An organism that provides a unique substratum for specific other organisms; rarely found on other organisms.