heteroecism การใช้

• Heteroecism of North American rusts was unexplored at that point, so to find the alternate hosts for some species, he performed over 3750 inoculations with 2140 collections on potential hosts.
• He was faced with the task of identifying a species concept appropriate for rust fungi, many of which exhibit up to five different spore types and can alternate between two hosts, known as heteroecism.