Bombyx hybrid Bombyx hybrid The "Bombyx" hybrid is a hybrid between a female "Bombyx mori" moth and a male "Bombyx mandarina" moth. They produce silkworm larvae like all species of "Bombyx". The larvae look a lot like the other variations. They are brown in the first half and gray at the bottom half, but they get larger black spots than other variations. Generally, they look like a normal "Bombyx" moth, but a bit darker. Hybrids are not used for silk, but are used for research. "Bombyx mori" females are much more likely to mate with a male "Bombyx mandarina", but both species
Dauer larva as "L1", "L2", "L3" and "L4". After L4, animals moult to the reproductive adult stage. However, when the environment is unfavorable, L1 and L2 animals have the option to divert their development from reproduction to dauer formation. Signals such as temperature, food supply, and levels of a dauer-inducing pheromone, a population density cue, influence this dauer decision. Dauer larvae are thus considered an alternative L3 stage larva, and this stage is sometimes preceded by L2d. L2d animals are considered pre-dauer and are characterised by delayed development and dark intestines produced by storage of fat. L2d larvae can either continue normal