Protandry

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Related to protandrous: protogynous

protandry

[prō′tan·drē]
(physiology)
That condition in which an animal is first a male and then becomes a female.

Protandry

 

a state in which the pollen ripens earlier than the stigmata of the pistils in the flowers of a plant. Protandry is an adaptation to cross-pollination (seeDICHOGAMY and ).

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References in periodicals archive ?
The spermatagonia develop more quickly than oogonia, resulting in a protandrous oyster (Coe 1931b).
We sampled channeled whelk in Buzzards Bay, Massachusetts, and expected that they would be protandrous hermaphrodites as reported for laboratory-reared knobbed whelk by Castagna and Kraeuter (1994).
Protandrous arrival timing to breeding areas: a review.
The gonadal anatomy and sexual pattern of the protandrous sex-reversing fish, Rhabdosargus sarba (Teleostei: Sparidae).
Alstroemeria, Bomarea, and Pentagonia are protandrous at the
The morphology of gonadal tissue and male germ cells in the protandrous black porgy, Acanthopagrus schlegeli.
They are strongly protandrous, with pollen already mature and sometimes shed within the bud.
calcarifer is a protandrous fish found in estuaries and other coastal areas of the Indo-West Pacific (Griffin, 1987).
margaritifera is a protandrous hermaphrodite (Tranter 1958a).
The combination of our direct observations and Skottsberg's observations (1928), together with generalizations from published data for some continental genera or families, indicate that around 30% of the species are or should be protandrous and 7% protogynous.
Our study examined age, growth, maturation, and sex reversal of common snook which previously had not been diagnosed as being protandrous hermaphrodites.
maxima is a protandrous hermaphrodite, with a 50:50 male-to-female ratio at a size of 170 mm in Western Australia (Hart & Joll 2006), but more females than males can be expected to occur at sizes larger than 170 mm.