RESEARCH INTERESTS
Our research aims to study the control of reproduction in migratory freshwater fish living in nature and in captivity, where they do not spaw without hormonal induction. For that purpose, we study the pituitary gland, the interrenal gland, the ovary, the testis, and the GnRH nucleus of the brain. These investigations are made by various methods such as cytochemistry, immunocytochemistry, and morphometry under light and electron microscopy.
RELEVANT PAPERS
Gazola, R.A.; Borella, M.I.; Donaldson, E.M.; Val-Sella, M.V.; Sukumasavin, N.; Fava-De-Moraes, F., Bernardino, G. “Plasma steroid and corticosteroid levels in female pacu Piaractus mesopotamicus, Teleostei-Characidae”. Brazilian Journal of Medical and Biological Research 29: 659-664. 1996.
Borella, M.I.; Gazola, R.A.; Val-Sella, M.V.; Fava-De-Moraes, F. “Histochemical and immunocitochemical study of the pituitary gland of the South-American teleost pacu fish Piaractus mesopotamicus, pacu (Cypriniformes, Characidae)”. Brazilian Journal of Morphological Sciences, 14 (2): 219-225, 1997.
Powell, J.F.F.; Standen, E.M.; Carolsfeld, J.; Borella, M.I.; Gazola, R.; Fischer, W.H.; Park, M.; Craig, A.G.; Warby, C.M.; Rivier, J.E.; Val-Sella, M.V.; Sherwood, N.M. “Primary structure of three forms of gonadotropin-releasing hormone (GnRH) from brain of pacu Piaractus mesopotamicus“. Regulatory Peptides, 68: 189-195, 1997.
Gazola, R.A.; Borella, M.I. “Plasma testosterone and 11-ketotestosterone levels in male pacu Piaractus mesopotamicus (Teleostei, Cypriniformes)”. Brazilian Journal of Medical and Biological Research, 30 (12): 1485-1487, 1997.
Romagosa, E.; Narahara, M.Y.; Borella, M.I.; Parreira, S.F.; Fenerish-Verani, N. Ultrastructure of the germ cells in the testis of matrinxã, Brycon cephalus (Gunther, 1869) (Teleostei, Characidae). Tissue & Cell, 31: 540-544, 1999.
