Developmental stages of primary oocytes in turkeys

Poultry Science
J L CarlsonM A Ottinger

Abstract

Little is known about the growth and differentiation of the primary oocyte in the sexually mature chicken or turkey hen. In this study, primary oocytes from turkey hens in egg production were examined by light and electron microscopy. Based on oocyte and germinal vesicle (GV) diameters and organelle morphology and distribution, the sequential development of the primary oocyte was divided into five stages. No Balbiani body was observed in Stage I oocytes (< 80 microns in diameter). Pleomorphic mitochondria were localized around the GV and multivesicular bodies were scattered in the ooplasm. By Stage II (81 to 150 microns), the Balbiani body was observed adjacent to the GV. Pleomorphic mitochondria, macrobodies, and smooth endoplasmic reticulum (SER) were associated with the Balbiani body. Lipid droplets were predominantly localized to the periphery of the oocyte. The Balbiani body was partially dispersed by Stage III (151 to 350 microns) and associated organelles appeared in clusters in the ooplasm. Golgi and SER were observed immediately subjacent to the oolemma. Stage IV oocytes (351 to 500 microns) were characterized by the absence of the Balbiani body, a more centrally located GV, and the redistribution of the mitochondria t...Continue Reading

Citations

Jul 12, 2003·Experimental Gerontology·Donna J HolmesMary Ann Ottinger
Apr 30, 2004·Reproductive Biology and Endocrinology : RB&E·Antonin BukovskyNirmala B Upadhyaya
May 6, 2005·Reproductive Biology and Endocrinology : RB&E·Antonin BukovskyMichael R Caudle
Jun 8, 2006·The Journal of Reproduction and Development·Meihong DuZandong Li
Jun 30, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Antonin Bukovsky
Feb 21, 2004·Current Topics in Developmental Biology·Malgorzata KlocLaurence D Etkin
Feb 16, 2017·Cellular and Molecular Life Sciences : CMLS·Chao WangGuoliang Xia

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