|WikiProject Veterinary medicine||(Rated C-class, Low-importance)|
|WikiProject Animals||(Rated C-class, Mid-importance)|
Zebadiahjones (talk) 23:27, 17 February 2008 (UTC) I know this isn't very important, but that whole "ecological role" part sounds ridiculous. References would be nice. My old merck vet manual was a lot more helpful than this. Planning on deleting the ecological role if it stays like it is.
- That's a legitimate objection. I'm trying to find some sources to substantiate it. Heck, some sources for ANYTHING. This whole article is on a well-documented organism, but inexplicably sourceless. I'd freely encourage you or anyone else to feel free to axe that section if nobody (including me) succeeds at sourcing it. Might be OR. - Vianello (talk) 20:37, 3 July 2008 (UTC)
On a related side-note, the word "avoid" was changed to "are kept away from" in this section. I'm not sure it's clear which meaning is intended, though. Do cattle instinctively avoid it, or are they logically kept from it by keepers? The section doesn't really make it clear whether the original sense or the new one is correct. - Vianello (talk) 08:36, 10 July 2008 (UTC)
I've gone ahead and axed this section, which has continued to go unsourced. Here's an archival copy for in case sources are found, so we can re-add it:
The lancet flukes are important to grasslands. To prevent infestation, cattle are kept away from patches of the greenest grass, which has been fertilized by manure. The danger for them is not the feces itself, but rather the possibility that tiny ants might be at the tops of the blades, carrying the parasite. Therefore, those patches grow undisturbed as cows feed on the remaining grass, which is not enough for all of them. The cows are then forced to eat the green grass, and for a while the cow population rises. Eventually, the parasites infect the cows. Infected cows eat less and fail to reproduce as frequently. The cow population drops, allowing the grass to regrow. The cow population eventually recovers and returns to being wary of the greenest grass, completing the cycle.