title: Distribution of corazonin and pigment-dispersing factor in the cephalic ganglia of termites.
abstract: Distribution of neurones detectable with antisera to the corazonin (Crz) and the pigment-dispersing factor (PDF) was mapped in the workers or pseudergates of 10 species representing six out of seven termite families. All species contained two triads of Crz-immunoreactive (Crz-ir) neurones in the protocerebrum. Their fibres were linked to the opposite hemisphere, formed a network in the fronto-lateral protocerebrum, and projected to the corpora cardiaca (CC); in most species the fibres also supplied the deuto- and tritocerebrum and the frontal ganglion. Some species possessed additional Crz-ir perikarya in the protocerebrum and the suboesophageal ganglion (SOG). The PDF-ir somata were primarily located in the optic lobe (OL) and SOG. OL harboured a group (3 groups in Coptotermes) of 2-6 PDF-ir cells with processes extending to the medulla, connecting to the contralateral OL, forming 1-2 networks in the protocerebrum, and in most species running also to CC. Such a PDF-ir system associated with the OL was missing in Reticulitermes. Except for Mastotermes, the termites contained 1-2 PDF-ir cell pairs in the SOG and two species had additional perikarya in the protocerebrum. The results are consistent with the view of a monophyletic termite origin and demonstrate how the Crz-ir and PDF-ir systems diversified in the course of termite phylogeny.
authors.affiliation: Pedagogical Faculty, University of South Bohemia, Jeronýmova 10, 371 15 Ceské Budejovice, Czech Republic.
authors.forename: Radka
authors.initials: R
authors.lastname: Závodská
authors.forename: Chih-Jen
authors.initials: CJ
authors.lastname: Wen
authors.forename: Ivan
authors.initials: I
authors.lastname: Hrdý
authors.forename: Ivo
authors.initials: I
authors.lastname: Sauman
authors.forename: How-Jing
authors.initials: HJ
authors.lastname: Lee
authors.forename: Frantisek
authors.initials: F
authors.lastname: Sehnal
mesh_terms: D000818:Animals; D005724:Ganglia / Q000378:metabolism*; D019476:Insect Proteins / Q000378:metabolism*; D020049:Isoptera / Q000033:anatomy & histology / Q000145:classification / Q000378:metabolism*; D009479:Neuropeptides / Q000378:metabolism*; D010455:Peptides / Q000378:metabolism*; D013045:Species Specificity
chemical_list: D019476:Insect Proteins; D009479:Neuropeptides; D010455:Peptides; C060602:corazonin protein, insect; C027714:melanophore-dispersing hormone