70. Ott, D. W. and R. M. Brown, Jr. 1978.
Developmental cytology of the genus Vaucheria. IV. Spermatogenesis.
British Phycol J. 13:69-85.
70. Abstract
Spermatogenesis among several species of
Vaucheria has been examined in sections prepared for light
and electron microscopy. Early developmental stages of zoosporogenesis
and spermatogenesis are identical; however, cytoplasmic cleavage
progresses to completion in the antheridium, while incipient cleavage
is rudimentary in the zoosporangium. During morphogenesis of
the antheridium, nuclear cyclosis is inhibited and flagella develop
from nucleus-associated basal bodies. The flagella project into
internal membrane reservoirs (termed flagellar pools) which, unlike
their counterparts in zoosporogenesis, fail to migrate to the
surface of the antheridium, while chloroplasts are excluded from
uninucleate protoplasmic segments by completion of cleavage furrow
development.