Topological and histological description of preoptic area and hypothalamus in cardinal tetra Paracheirodon axelrodi (Characiformes: Characidae)

This dataset contains the digitized treatments in Plazi based on the original journal article Rincón, Laura, Obando, Martha J., Tovar, Mario O., Pandolfi, Matías, Hurtado, Hernan (2017): Topological and histological description of preoptic area and hypothalamus in cardinal tetra Paracheirodon axelrodi (Characiformes: Characidae). Neotropical Ichthyology 15 (1): e 160145, DOI: 10.1590/1982-0224-20160145, URL: dx.doi.org/10.1590/1982-0224-20160145 Topological and histological descriptions of the preoptic area and hypothalamus of the cardinal tetra Paracheirodon axelrodi were performed.

Standard histological paraffin sections were used and stained with Nissl technique, and plastic sections for high-resolution optic microscopy (HROM). The preoptic area showed some differences related to the location of the magnocellular preoptic nucleus (PM) and the size of the neurons in this region, as they were the biggest in all the preoptic area. Additionally, within the preoptic area, the different structures that comprise the organum vasculosum of the lamina terminalis (OVLT) were identified and characterized.