抄録
Antisera raised against piscine pituitary hormones and heterologous antisera against mammalian pituitary hormones were used to analyze the types and distribution patterns of cells in the adenohypophysis of pejerrey Odontesthes bonariensis. Prolactin (PRL) cells were immunostained in the external border of the rostral pars distalis using anti-chum salmon PRL and anti-carpPRL. Immunoreactive (ir-)corticotrophic (ACTH) cells were identified in the same area using anti-human ACTH and crossreactivity was observed in the pars intermedia (PI), corresponding to the presumptive melanocytestimulating hormone cells. Ir-growth hormone (GH) cells were identified in closecontact with the neurohypophysis in the proximal pars distalis (PPD) using anti-chum salmon GH and anti-carp GH antisera. Ir-gonadotrophic (GtH) cells were distributed in the PPD and in the external area of the PI. Two forms of GtH were identified using antisera raised against chum salmon GtH Iβ and GtH IIβand anti-croaker maturational GtH. Ir-thyroid-stimulating hormone (TSH) cells were revealed with an anti-human TSHβ antiserum in the PPD. Ir-somatolactin (SL) cells were detected in the PI using two antisera raised against chum salmon and red drum SL.
