| Morphofunctional Evaluation of the Testicle and the Spermatogenic Process of Adult White-Eyed Parakeets (Aratinga leucophthalma MULLER, 1776) During the Different Seasons of the Year. | |
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MedLine Citation:
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PMID: 22211874 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this experiment, testicle fragments of 14 adult White-eyed Parakeets (Aratinga leucophthalma) were evaluated as for their seasonal reproductive activities using the following quantitative parameters: average thickness of the testicular tunica albuginea, volumetric proportion of tubular and extratubular compartments, average diameter of the seminiferous tubules and corporal weight. Parameters were created for qualitative evaluations of the degree of spermatogenic development. In this experiment, all the animals were distributed into four groups, and their testicular fragments were collected during the middle of summer, fall, winter and spring. The animals were submitted to volatile general anaesthesia, and a biopsy was made by celioscopy. The fragments collected were processed histologically. The slides were prepared and later evaluated by using an optical microscope. The average seasonal values of the corporal weight increased, starting in the winter and reaching the peak during the spring. A seasonal testicle cycle was observed, because, in the spring, the testicles showed values for the quantitative and qualitative parameters of spermatic production compatible with the period of greater activity, while the opposite thing happened during the fall. Our data indicate that the parameters of sperm production may be correlated with daily light rather than with air humidity. |
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Authors:
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J V Peixoto; T A R Paula; M K Balarini; S L P Matta; J A D Santos; C B Lima; G V Peixoto |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-1-3 |
Journal Detail:
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Title: Anatomia, histologia, embryologia Volume: - ISSN: 1439-0264 ISO Abbreviation: - Publication Date: 2012 Jan |
Date Detail:
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Created Date: 2012-1-3 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7704218 Medline TA: Anat Histol Embryol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 Blackwell Verlag GmbH. |
Affiliation:
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Veterinary Medicine Department, Federal University of Lavras, Lavras, 37200-000, Minas Gerais, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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