title: A hypothalamic channel-system in the inferior lobes of a trigger-fish (Rhinecanthus aculeatus, Balistidae).
abstract: In the course of a general investigation of the optic system in some trigger-fishes, a hypothalamic, ventricular channel-system with pores, leading to the outside of the brain, has been discovered in the inferior lobes of Rhinecanthus aculeatus (Balistidae). A description of the morphological relations of the channel-system to the blood-vessel-supply and the cranium suggests that the organ-systems involved form a functional unit. The possibility of a hormone-producing system is discussed in the light of physiological and ecological aspects.
mesh_terms: D000818:Animals; D005399:Fishes / Q000033:anatomy & histology*; D007030:Hypothalamo-Hypophyseal System / Q000033:anatomy & histology; D007031:Hypothalamus / Q000033:anatomy & histology*