| Abstrakt: |
In the populations of aquatic troglobitic Crustacea, breeding females are found all year round, with an annual peak. Data about their biological cycle suggest four phases of reproduction per year. Synchronisation of egg-laying (for the fraction of females actually reproducing) seems to happen for several species of Crustacea both in nature and at the laboratory. The onset of reproduction is sharpest either late winter or mid-spring, and its amplitude decreases along the annual cycle. The existence of a seasonal trigger is probable. |
