|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 5. Spermatophore dynamics in the experimental adult male/adult female and
all-male shrimp populations in relation to the period during which the females
matured and were receptive to males (pink rectangle, weeks 5-15). Time is
shown on the x axis in weeks. The y axis gives the
percentage of males that were found with empty ampoules at a certain week.
Black circles indicate the average daily percentage of molting males out of
the total number of males in the population. Green bars represent males with
empty ampoules on the night of ecdysis, before they molted (`molt-related').
Red bars represent males with empty ampoules in the middle of the molt cycle
(`sex-related'). It is clear that the latter were found only during the period
that the females were sexually receptive. On the other hand, males with empty
ampoules that were about to molt were found throughout the observation period,
irrespective of the presence of females, since such males were also observed
in the all-male population.
|
