title: Gonadal cysts in spotted gar (Lepisosteus oculatus) from Bayou Trepagnier, Louisiana, USA.
abstract: Gonadal cysts of spotted gar (Lepisosteus oculatus), an air-breathing teleost commonly found in Louisiana waters, are described. Fish were collected from two sites: Bayou Trepagnier, a petroleum-contaminated site (30 males and 42 females), and Bayou Traverse, a control site (17 males and 15 females). After fish were evaluated for gross abnormalities, they were necropsied and the gonads, gonadal ducts, and gonadal cysts were evaluated histologically. Multilocular fluid-filled cysts were noted in the testes, or spermatic ducts of four spotted gars from the Bayou Trepagnier. Unilateral ovarian cystadenomas were present in one female from Bayou Trepagnier. No cysts were observed in the gonads of spotted gar from the control site.
authors.affiliation: Department of Environmental Health Sciences, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA 70112, USA. thiyag@mailhost.tcs.tulane.edu
authors.forename: A
authors.initials: A
authors.lastname: Thiyagarajah
authors.forename: M B
authors.initials: MB
authors.lastname: Anderson
authors.forename: W R
authors.initials: WR
authors.lastname: Hartley
mesh_terms: D000818:Animals; D003560:Cysts / Q000473:pathology*; D005260:Female; D005393:Fish Diseases / Q000473:pathology*; D005399:Fishes; D008145:Louisiana; D008297:Male; D010048:Ovarian Cysts / Q000473:pathology / Q000662:veterinary*; D010578:Petroleum / Q000633:toxicity*; D013733:Testicular Diseases / Q000473:pathology / Q000662:veterinary*; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D010578:Petroleum; D014874:Water Pollutants, Chemical