Quote:
The density refers to the number of larvae per unit volume. For example, 2 mealworms/cup of wheat bran would experience a lower density than would 100 mealworms/cup of wheat bran. Through social interactions and chemical cues, the larvae gain information about how many others there are around them. Presumably, they begin gathering this information at a very young age and the signals accumulate throughout larval development. If a mealworm were to develop throughout it's larval period in high density conditions and then you put it into isolation right at pupation, it has information telling it that the population is dense, even though it is in isolation. Therefore, you would expect it to prepare for a dense population as an adult and be darker colored. Does that make sense?
Sounds very technical. It doesn't matter to me. I have tons of black and brown beetles, previously a very light color.
How long is it after the beetle emerges as a beetle that they can mate and lay eggs?