Ultrastructural and in vitro steroidogenesis of the gonads in the protandrous
Here, an opposing direction of selection acting on males may come to act: the reproductive benefit of protandrous
males, which selects for small body size (Gotthard 2004; Stillwell et al.
Reproductive biology and protandrous
Hermaphroditism in Acanthopagrus latus.
The percentage of males found in the control treatment was already expected as the common snook is a protandrous
hermaphrodite species according to Taylor et al.
ovalifoliolata, the flowers are weakly protandrous
, produce considerable per cent of sterile pollen and present the capitate, wet papillate tri-lobed stigma above the stamens as in case of its allied species B.
Pregnant females of the parasite have the characteristic of presenting the posterior pleopods as the stylets of males, which indicates that they are protandrous
hermaphrodites (Lemos de Castro, 1955), reaching the hosts as males, but after a short period of free life as juveniles, later transforming themselves into females in the gills or mouth (Eiras, 1994).
Many self-compatible species have special adaptations to prevent the automatic self-pollination, such as species herkogamous, protandrous
Key Words: Polynemidae; Hermaphrodite; Exponential; Protandrous
Flower sex ratio, pollinator abundance, and the seasonal pollination dynamics of a protandrous
Female mating success and risk of pre-reproductive death in a protandrous
Flowers are produced over a terminal portion of the stalks, have pale blue tubular corollas (tube length 6-8 mm), and are hermaphroditic and protandrous
alba is predominantly allogamous, protandrous
, and heterostylous.