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Repression of Y-organ secretory activity by molt inhibiting hormone in the crab Pachygrapsus crassipes.
TLDR
Sinus glands from the shore crab Pachygrapsus crassipes were incubated in saline to extract a Y-organ inhibiting factor, which inhibited ecdysone secretion by Y-organs maintained in vitro and decreased incorporation of [ 14 C]leucine into protein.
Production of a new antiserum to arthropod molting hormone and comparison with two other antisera.
TLDR
It is shown that β-ecdysone 2-hemisuccinate was conjugated to thyroglobulin yielding 166 haptens per molecule of protein, and this antiserum raised against this conjugate and two others were used to estimate the concentration of β-ECDysone in crab hemolymph.
Ecdysteroid titers during the molt cycle of the blue crab resemble those of other Crustacea
TLDR
Caiinectes sapidus is the only true crab whose pattern of ecdyste roid titers has been described as departing from the pattern seen in other decapods, but the data reported here challenge these findings.
Ecdysone 20-monooxygenase activity in land crabs
TLDR
Changes in ecdysone 20-monooxygenase activity at different stages of the molt cycle are not directly correlated to changes in ecdysteroid levels in the hemolymph.
Regulation of crustacean molting and regeneration
The regulation of molting and regeneration by two antagonistic hormones is discussed. The time course of ecdysteroid titers in crustacean tissues has been followed during molt and regeneration
Control of molting in crustacea
TLDR
It is proposed that an anecdysial limb autotomy factor (LAF/sub an/) that propels into precocious molts anecdotalysial limbs autotomy factors that interrupts the proecdysial period of animals that lose one or more normal or partially regenerated pereopods before a critical time in proecdysis.