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Morphological Characterization of the Ovarian Preantral Follicle Population of Collared Peccaries ( T ayassu tajacu L innaeus, 1758)
Author(s) -
Lima G. L.,
Santos E. A. A.,
Luz V. B.,
Rodrigues A. P. R.,
Silva A. R.
Publication year - 2013
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1111/ahe.12021
Subject(s) - biology , ovary , follicular phase , histology , ultrastructure , population , follicle , folliculogenesis , andrology , oocyte , anatomy , endocrinology , microbiology and biotechnology , medicine , embryogenesis , embryo , environmental health , genetics
Summary The aim of this research was to characterize the preantral ovarian follicular population in collared peccaries ( T ayassu tajacu ) using light and electron microscopy. Ovaries from six mature females were collected and further fixed for histological and ultrastructural analysis. A total of 33273.45 ± 5789.99 preantral follicles ( PF s) were estimated for the population in each ovary. Most preantral follicles were primordial (91.56%), followed by primary (6.29%) and secondary (2.15%) ones. Most PF s were morphologically normal (94.4%), and only a few were atretic (5.6%). At histology assessment, amounts of lipid droplets were observed into the oocyte cytoplasm, which was confirmed through ultrastructural analysis. This work characterizes for the first time the ovarian population of preantral follicles, total and per category, in collared peccaries ( T ayassu tajacu) . The general follicles featured at primordial, primary and secondary categories are very similar to those described for other species.