Posts Tagged ‘parasitism’

So, I just finished reading a wonderful book by Bernd Heinrich:

Summer World: A Season of Bounty

(although, not everyone agrees with my view of the book)

It had a nice bit about cecropia moths, although the news was not too encouraging. The bottom line is that very, very, very few cecropia moths ever manage to complete their entire lifecycle.

He mentions that each female cecropia moth lays from 200 to 400 eggs but that most of the larvae that do manage to hatch die. The ratio given in the book for live moths to live larvae was one moth per 100 larvae.

According to Heinrich, parasitic flies and wasps account for the bulk of the larvae deaths. Interestingly, those predators are then often parasitised themselves and then those are parasitised (referred to as a hyper-hyper-parasitoid wasp). Which makes me think of:

“So nat’ralists observe, a flea
Hath smaller fleas that on him prey,
And these have smaller fleas that bite ’em,
And so proceed ad infinitum.”

(As a side note, I was curious about the link to “turtles all the way down” and now want to get a t-shirt with that on it….possibly a job for Endangered Ugly Things?)

Anyway,¬†Heinrich’s book¬†gave a lot of good information on cecropia moths and I would highly advise reading that part if you are planning on rearing these moths. (His moths emerged at the very start of June, but I am still waiting on mine to emerge….stay tuned!)

I hope I get moths and not parasitic wasps/flies…


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