Moult inhibiting hormone (MIH), one of the important neurohormones synthesized and released from the X-organ sinus gland complex is primarily involved in the regulation of moulting (Lachaise et al.
Serotonin (5-HT) has been reported to stimulate the release of moult inhibiting hormone (MIH) (Mattson and Spaziani 1985), the crustacean hyperglycemic hormone (CHH) (Keller and Beyer 1968) the neurodepressing hormone (NDH) (Arechiga et al.
The serotonin may affect the X-organ in such a way that the production and release of moult inhibiting hormone continued beyond the normal time, the effect would be to delay in initiation of ecdysis.
Structure and significance of mandibular organ inhibiting hormone
in the crab, Cancer pagurus: involvement in multi-hormonal regulation of growth and reproduction.
This removes the source of a reproduction inhibiting hormone
, thereby enabling spawning to occur almost continuously, until the female dies.
However, if you collect holly berries from a variety of specimens now, to help ensure a mix of male and female plants, these can be mixed with ordinary potting compost in a medium sized plant pot and this should then be half-buried in the garden in an exposed position so that the berries get the cold and wet of winter - this dilutes germination inhibiting hormones
in the seed.