Histological St . Udies on the Gonads of the Fowl
نویسنده
چکیده
IN a recent communication, Dr F. A. E. Crew described one case of complete sex reversal in the domestic fowl and seven others showing different stages in this process. The whole formed a consistent series which demonstrated the fact that an individual which had previously functioned as an active female producing eggs can on occasion undergo a complete sex transformation and come to function as a cock. Dr Crew handed to me the gonads of these fowls, and it is the purpose of this paper to describe in detail their histology and to discuss the bearing of the results of this histological examination upon the general question of sex reversal in the fowl. I wish to express my gratitude to Dr Crew for his generosity in placing this valuable material at my disposal, and for much help and encouragement during the course of the work. I also wish to acknowledge my indebtedness to Dr L. T. Hogben for his invaluable criticism and advice.
منابع مشابه
Sex steroid levels, reproductive indices and histological examination of gonads in adult male and female Caspian shemaya, Alburnus chalcoides
Reproductive status of Alburnus chalcoides adults from Anzali Wetland was investigated by histological examination of gonads, assessment of sex steroids (i.e. Progesterone (P), Estradiol-17ß (E2), Testosterone (T)) and reproductive indices (i.e. absolute fecundity, oocyte diameter, hepatosomatic index (%HSI) and gonadosomatic index (%GSI)). Totally, 42 females and 16 males were captured during ...
متن کاملHistomorphometrical study of gonads in the endemic cyprinid fish, Cyprinion tenuiradius Heckel, 1847 (Cypriniformes: Cyprinidae)
To describe the morphological and histological changes during the annual reproductive cycle of the gonads of Cyprinion tenuiradius, a total of 341 specimens (102 female and 235 male specimens) were collected monthly from the Rudbal River (in the Qarah Aghaj sub-basin, the Persian Gulf basin), Firuzabad, Fars Province, southern Iran. The randomly sampling was adequate to collect males and female...
متن کاملSex steroid levels, reproductive indices and histological examination of gonads in adult male and female Caspian shemaya, Alburnus chalcoides
Reproductive status of Alburnus chalcoides adults from Anzali Wetland was investigated by histological examination of gonads, assessment of sex steroids (i.e. Progesterone (P), Estradiol-17ß (E2), Testosterone (T)) and reproductive indices (i.e. absolute fecundity, oocyte diameter, hepatosomatic index (%HSI) and gonadosomatic index (%GSI)). Totally, 42 females and 16 males were captured during ...
متن کاملMolecular Identification of Fowl Adenovirus Associated with Inclusion Body Hepatitis in Iran
Background and Aims: Inclusion body hepatitis (IBH) is one of the most important reemerging diseases in many countries with intensive poultry industries. In Iran, the etiological agent of IBH (fowl adenovirus) has not been yet confirmed. The aim of this study was the molecular detection and identification of fowl adenovirus involving IBH in chicken flocks in Iran. Materials and Methods: Polymer...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005