Crawlers used in this experiment were obtained from newly developed ovisacs
which were transferred from the rearing area to glass tubes (5 cm ht X 1 cm diam) closed with Parafilm[R] and checked daily until the eggs hatched (after hatching nymphs tend to cluster under the ovisac
, which is easily seen through the glass).
were coated with a very thin membrane that was associated with numerous tracheoles (see Figures IB, C).
During their life span they neither laid eggs nor produced ovisacs
, indicating no parthenogenetic reproduction in mealybug.
The amount of As-nurpl mRNA in the embryos collected from the ovisacs
was much higher than in the activated embryos (Fig.
During oviposition, the female secretes a white wax ovisac
of irregular shape resembling cotton, on which eggs are laid.
Remainder of holotype, comprising ovisac
and "roots" (Fig.
19,484, n = 22) stored in the ovisacs
and available for release.
On 13 Sep 2011 (in the cohort study), adult scales were found to have numerous unhatched eggs in their ovisacs
at the study site.
Eggs of some vestimentiferans are stored in expanded distal ovisacs
prior to release.
Greater predation on neonate nymphs than on other stages can be expected in the field because the predators can access large numbers of crawling nymphs as they leave female ovisacs
moschata fruits to adult females with fully developed ovisacs
Newly oviposited nymphs in ovisacs
from each of the gravid females were removed daily and the total number of immature per ovisac