Document Detail


Early primary-rather than primordial follicles constitute the main follicular reserve in the African elephant (Loxodonta africana).
MedLine Citation:
PMID:  21126835     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Information on the ovarian follicle reserve in the African elephant (Loxodonta africana) is lacking. This study set out to determine the ratios of early preantral follicles and their relative dimensions in the ovaries of 16 African elephant aged 10-34 years. The ovaries were sectioned histologically. Follicles were counted and classified according to expansion of the pre-granulosa cells. Early primary follicles were the most common (75.8%±11.8%), followed by true primary follicles (23.8%±11.8%), whereas primordial follicles were the most rare (<2%). Measurements made on at least 100 early preantral follicles from each animal (n=1464) indicate that growth in oocyte and nuclear diameters started with transition to the true primary stage P<0.01. This, together with the observed ratios between the three types of early preantral follicles suggest that both classical primordial and early primary follicles contribute to the ovarian reserve in the African elephant.
Authors:
Fiona J Stansfield; Helen M Picton; J O Nöthling
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Publication Detail:
Type:  Journal Article     Date:  2010-11-10
Journal Detail:
Title:  Animal reproduction science     Volume:  123     ISSN:  1873-2232     ISO Abbreviation:  Anim. Reprod. Sci.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7807205     Medline TA:  Anim Reprod Sci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  112-8     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Affiliation:
Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, South Africa.
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