Protandric


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Pro`tan´dric


a.1.(Zool.) Having male sexual organs while young, and female organs later in life.
References in periodicals archive ?
The geoduck Panopea zelandica is protandric, with almost all geoducks developing first as males and some changing sex to female as they age/grow (Gribben & Creese 2003).
Male penis length increased with SL, a finding that also indicates channeled whelk may not be protandric hermaphrodites.
Yep--our famed gamester is an androgynous fish (technically, in this case, a protandric hermaphrodite).
Pink shrimp are protandric hermaphrodites, generally functioning as males for the first year and a half of their life before developing into terminal females (Butler, 1964), although the age at which individuals change sex can vary from year to year in response to the population structure (Hannah and Jones, 1991; Charnov and Hannah, 2002).
Age, growth, maturation & protandric sex reversal in common snook, Centropomus undecimalis, from the east and west coasts of South Florida.
Because of the length of the undifferentiated gonad stage in juvenile striped mullet, previous studies have proposed the possibility of protandric hermaphrodism in this species.
Initially such a condition was assumed to be sexual dimorphism, although a difference in habitat by males as well as protandric hermophrodism were also possible explanations for the disparate sex ratio.
The reproductive cycle and potential protandric development of the Noah's ark shell, Arca noae L.
Age, growth, maturation, and protandric sex reversal in common snook, Centropomus undecimalis, from the east and west coasts of South Florida.
The eastern oyster Crassostrea virginica (Gmelin 1791) is described as an r-selected protandric hermaphrodite with a type 3 mortality curve and a life expectancy in excess of 10 y in undisturbed populations (Powell & Cummins 1985, Thompson et al.