We review the anatomical and functional features of circumventricular organs in vertebrates
and their homologous neurohemal organs in invertebrates. Focusing on cyclostomes …

The pars tuberalis of the pituitary gland is the regulatory hub for seasonal reproduction in
birds and mammals. Although fish also exhibit robust seasonal responses, they do not …

The distribution of cholinergic neurons and fibers was studied in the brain and rostral spinal
cord of the brown trout and rainbow trout by using an antiserum against the enzyme choline …

Many studies have been made on the distributions of CSF contacting neurons (CSF-CNs) in
the parenchyma of the brain with horseradish peroxidase (HRP) or autoradiographics. A …

The hypothalamic-pituitary–gonadal axis is the main system that regulates reproduction in
vertebrates through a complex network that involves different neuropeptides …

Over recent years, the seven-spot archerfish (Toxotes chatareus) has emerged as a new
model for studies in visual and behavioral neuroscience thanks to its unique hunting …

All studies to date of cholinergic systems of bony fishes have been done in teleosts. To gain
further insight into the evolution of the cholinergic systems of bony fishes, we have studied …

The neural connections of the parapineal organ of two species of lampreys were studied
with the fluorescent dye 1, 1′‐dioctadecyl‐3, 3, 3′, 3′‐tetramethylindocarbocyanine …

Previous studies in teleosts have revealed the presence of the intermediate filaments
vimentin (Vim) and glial fibrillary acidic protein (GFAP) in glial cells of the spinal cord and/or …

The connections of the cerebellum of the rainbow trout were studied by experimental
methods. The pretectal paracommissural nucleus has reciprocal connections with the …