well read this from bugnation bout vomiting and such wondering if anyone has any opinions on this too!1, Poor Food source, dirty or diseased livefood.
2, Over feeding for extended periods of time
3, Keeping mantids at too colder temperature meaning they digest food too slowly which then rots in their gut.
4, Genetic problem due to too much inbreeding of Sp.
5, Handling you mantid with dirty hands causing a transfere of bacteria or chemicals making it sick.
6, Keeping your mantid in a dirty / unhygenic enclosure.
7, Feeding the same live food type without varying the diet.
It seems it can effect 1 indivdual or many.
some people have lost allot of their collection effected by it, others say 50% died and some say all recovered.
Ah Massaman! I think that the guesses hazarded in your list owe more to the need to explain a worrying mystery than to scientific evidence or even common sense.
1) Who in their right minds would feed their mantids "dirty or diseased livefood" (and I am talking here about hobbyists, not labs, where an assistant may feed large numbers of, say, crix, without checking them carefully)? How does an active "diseased" cric behave differently from a healthy one? Sounds like a
post hoc argument to me.
2) This makes no sense. When a mantis is full, it stops eating. It is possible, though, that on a single occasion, particularly after a period of starvation a mantis might over eat enough to cause emesis. This is consistent with my experience, though not proven by it, and is contrary to the experimental evidence in the Prete book.
3) What a disgusting thought! And with no evidence whatsoever!
4) My vote for "guess at the bottom of the barrel" goes to this one. Is someone suggesting that there is a recessive gene for vomiting?
5&6) Sure. In the wild, mantids are famous for avoiding anything that is dirty or unhygenic. BTW, wouldn't this affect all of the mantids?
6) In a very tight field, this seems to be the most imagintive guess of all, and is certainly untrue from my own experience.
So why accept Christian's suggestions for the cause of this phenomenon? Because he and his colleagues are trained scientists. They may possibly be wrong, but their hypothoses are least reasoned and based on extensive experience.
BTW I noticed that you gave a reply by a Mantid Forum member on this subject on Bug Nation without citing your source. I am sure that this was accidental, since you cite your source here, but it really is a no,no. Perhaps you could edit your post there to give credit where it is due?