title: Ultrasonographic imaging of the testis and epididymis of the bottlenose dolphin, Tursiops truncatus aduncas.
abstract: Eight male bottlenose dolphins, Tursiops truncatus aduncas, underwent examination of the reproductive organs to investigate the use of real-time B-mode ultrasonography in assessment of reproductive status and to establish normal ultrasonographic appearances. Ultrasonography allowed repeatable examinations which were well tolerated by all animals. Ultrasonography was used to examine the testes, epididymides, vasa deferentia, penis, bulbourethral and bulbocavernosal muscles; the prostate was not convincingly distinguished from surrounding muscles. Testicular echopatterns and size differed among individuals. Three distinct testicular echopatterns were discerned and could be used to differentiate males of different reproductive status. Ultrasonographic appearance of the testes provides useful data in assessing the reproductive status of male dolphins.
authors.affiliation: Department of Optometry and Radiography, The Hong Kong Polytechnic University, Kowloon, Hong Kong.
authors.forename: F M
authors.initials: FM
authors.lastname: Brook
authors.forename: R
authors.initials: R
authors.lastname: Kinoshita
authors.forename: B
authors.initials: B
authors.lastname: Brown
authors.forename: C
authors.initials: C
authors.lastname: Metreweli
mesh_terms: D000818:Animals; D004289:Dolphins / Q000033:anatomy & histology* / Q000502:physiology; D004822:Epididymis / Q000000981:diagnostic imaging; D005837:Genitalia, Male / Q000000981:diagnostic imaging*; D008297:Male; D009132:Muscles / Q000000981:diagnostic imaging; D010413:Penis / Q000000981:diagnostic imaging; D012741:Sexual Maturation / Q000502:physiology*; D013737:Testis / Q000000981:diagnostic imaging; D014463:Ultrasonography; D014649:Vas Deferens / Q000000981:diagnostic imaging