| Germ Cell Dynamics during the Annual Reproductive Cycle of Dendropsophus minutus (Anura: Hylidae). | |
| | |
MedLine Citation:
|
PMID: 22035307 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Thirty male specimens of Dendropsophus minutus Peters, 1972, were collected from April 2004 to March 2005 in the region de Sao José do Rio Preto/SP, to conduct a histological study during the seasonal and annual cycles. Testicular activity was inferred based on the volume occupied by each type of cellular cyst present in the seminiferous tubules, as well as the quantity of germ cells in the final development stage, the spermatozoids. All data analyzed were correlated with climatic variables (temperature, rainfall and photoperiod) registered in the region where specimens were collected. A significant variation was verified in the quantity of spermatozoids as well as in the volume occupied by spermatids and spermatozoids throughout the year and between the cold/dry and hot/ humid seasons. It has also been reported that environmental conditions are important factors closely related to species reproduction and that production of germ cells and volume occupied by germ cysts is independent of anatomical aspect of the gonads. Thus, it was possible to verify that although the species reproduces throughout the year, individuals exhibit a preferential reproduction season, resulting in a reproductive (October to the end of February) and a post-reproductive period. |
| | |
Authors:
|
Lia Raquel de Souza Santos; Lilian Franco-Belussi; Classius de Oliveira |
Related Documents
:
|
22609607 - Cytotoxicity evaluation of magnetite (fe(3)o(4)) nanoparticles in mouse embryonic stem ... 22287017 - The effect of hyperosmolar stimuli and cyclophosphamide on the culture of normal rat ur... 2161177 - Mesothelial cell inclusions in mediastinal lymph nodes mimicking metastatic carcinoma. 22505017 - Recombinant human albumin supports single cell cloning of cho cells in chemically-defin... 22157717 - Cd133+ colon cancer cells are more interactive with the tumor microenvironment than cd1... 6682387 - Inhibition by ultraviolet light of pole cell formation in smittia sp (chironomidae, dip... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Zoological science Volume: 28 ISSN: 0289-0003 ISO Abbreviation: Zool. Sci. Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-10-31 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8702287 Medline TA: Zoolog Sci Country: Japan |
Other Details:
|
Languages: eng Pagination: 840-4 Citation Subset: IM |
Affiliation:
|
1 Goiás Federal Institute (IFG) campus RioVerde, Goiás, Brazil. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Artificial Production and Natural Breeding of the Endangered Frog Species Odorrana ishikawae, with S...
Next Document: Differentiation of Steroid-Producing Cells and Folliculogenesis in the Developing Ovary of the Nile ...