title: Naphthoquinones and anthraquinones from scent glands of a dyspnoid Harvestman, Paranemastoma quadripunctatum.
abstract: Extracts of Paranemastoma quadripunctatum (Opiliones, Dyspnoi, Nemastomatidae) contained seven components, all of which likely originated from the secretion of well-developed prosomal scent glands. The two main components (together accounting for more than 90% of the secretion) were identified as 1,4-naphthoquinone and 6-methyl-1,4-naphthoquinone. The minor components were 1,4-naphthalenediol, two methoxy-naphthoquinones (2-methoxy-1,4-naphthoquinone, and 2-methoxy-6-methyl-1,4-naphthoquinone) and two anthraquinones (2-methyl-9,10-anthraquinone and a dimethyl-9,10-anthraquinone). While some chemical data on scent gland secretions of the other suborders of Opiliones (Cyphophthalmi, palpatorean Eupnoi, and Laniatores) already exist, this is the first report on the scent gland chemistry in the Dyspnoi. Naphthoquinones are known scent gland exudates of Cyphophthalmi and certain Eupnoi, methoxy-naphthoquinones and anthraquinones are new for opilionid scent gland secretions.
authors.affiliation: Institute of Zoology, Karl-Franzens University, and University Children's Hospital, Universitätsplatz 2, 8010, Graz, Austria. guenther.raspotnig@uni-graz.at
authors.forename: Günther
authors.initials: G
authors.lastname: Raspotnig
authors.forename: Verena
authors.initials: V
authors.lastname: Leutgeb
authors.forename: Miriam
authors.initials: M
authors.lastname: Schaider
authors.forename: Christian
authors.initials: C
authors.lastname: Komposch
mesh_terms: D000818:Animals; D000880:Anthraquinones / Q000032:analysis* / Q000302:isolation & purification; D001097:Arachnida / Q000737:chemistry*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D009285:Naphthoquinones / Q000032:analysis* / Q000302:isolation & purification; D012543:Scent Glands / Q000737:chemistry*
chemical_list: D000880:Anthraquinones; D009285:Naphthoquinones