• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Nicole Alderman
  • Joseph Lofthouse
  • paul wheaton
  • Mike Haasl
master gardeners:
  • jordan barton
  • John F Dean
  • Carla Burke
  • Greg Martin
  • Jay Angler
  • Leigh Tate
  • thomas rubino

What Variables Affect Mealworm Size?

Posts: 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I've been raising mealworms for 8 or 9 months now and have noticed my pupae getting smaller and smaller.
I thought moisture might be a problem so a month or so ago I started feeding vegetables more often, every couple days. I also tried adding a sponge in an open ziploc bag to the bins to try to increase humidity.
A gauge laying on the substrate shows about 80 degrees F and 60-65% humidity. I feed a variety of produce I grow myself including carrots, potatoes, string beans, beets, yellow squash, banana peppers.
Still my pupae are coming out very tiny.
Since the large pupae are starting to show up less often and my larger beetles are getting pretty thin in numbers, I'm desperate to get the problem fixed.
I want to maintain them organically raised, so I don't want to use chemicals on them, I was thinking about pulling out the larger beetles and larger pupae to start a new bin. I don't know if selective breeding will fix the problem.
I wonder if genetic diversity is a problem, maybe the population per bin is too dense?
Anyone have any suggestions?

Collection of 14 Permaculture/Homesteading Cheat-Sheets, Worksheets, and Guides
will be released to subscribers in: soon!
    Bookmark Topic Watch Topic
  • New Topic