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Germinal potentialities during sexual state changes in a protandric hermaphrodite, Amphipnon frenatus (Teleostei, Pomacentridae)
Author(s) -
BrusléSicard S.,
Reinboth R.,
Fourcault B.
Publication year - 1994
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1994.tb00927.x
Subject(s) - hermaphrodite , biology , ovotestis , teleostei , juvenile , gonad , pomacentridae , zoology , sexual differentiation , anatomy , genetics , ecology , gene , fishery , fish <actinopterygii> , coral reef fish , habitat
In Amphiprion frenatus , a protandric hermaphrodite, male sex inversion is characterized by a decrease of spermatogenic activity in the ovotestis followed by a degeneration of male gevm cells and an increase of oogenic activity. Among female germ cells, undifferentiated primordial germ cells (PGCs) were identified; their participation in building up the ovary is suggested. In addition, the unusual association of juveniles with a single adull member or juvenile groupings lacking the presence of a monogamous pair, induced in juveniles the anticipated sex differentiations (in either male or female orientation) in which not only spermatogonia and oogonia but also PGCs are involved.