The life-cycle and epidemiology of ''T. tenius'' is very similar to that of the ''Trichostrongylus'' species of ruminants, and hypobiosis can occur in winter. Eggs are past out in the faeces. The larvae develop in the heather, and are ingested by a host e.g. a grouse, when feeding on the heather. Worms are capable of surviving for up to 2 months, and are capable of causing damage to the intestine and the caecum.
+
The life-cycle and epidemiology of ''T. tenius'' is very similar to that of the [[Trichostrongylus axei|''Trichostrongylus'']] species of ruminants, and hypobiosis can occur in winter. Eggs are past out in the faeces. The larvae develop in the heather, and are ingested by a host e.g. a grouse, when feeding on the heather. Worms are capable of surviving for up to 2 months, and are capable of causing damage to the intestine and the caecum.