Cycle length of spermatogenesis in shrews (mammalia: soricidae) with high and low metabolic rates and different mating systems.

Details

Serval ID
serval:BIB_A4074F45F7C1
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Cycle length of spermatogenesis in shrews (mammalia: soricidae) with high and low metabolic rates and different mating systems.
Journal
Biology of Reproduction
Author(s)
Parapanov R., Nusslé S., Vogel P.
ISSN
0006-3363 (Print)
ISSN-L
0006-3363
Publication state
Published
Issued date
2007
Volume
76
Number
5
Pages
833-840
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
The aim of the present study was to establish and compare the durations of the seminiferous epithelium cycles of the common shrew Sorex araneus, which is characterized by a high metabolic rate and multiple paternity, and the greater white-toothed shrew Crocidura russula, which is characterized by a low metabolic rate and a monogamous mating system. Twelve S. araneus males and fifteen C. russula males were injected intraperitoneally with 5-bromodeoxyuridine, and the testes were collected. For cycle length determinations, we applied the classical method of estimation and linear regression as a new method. With regard to variance, and even with a relatively small sample size, the new method seems to be more precise. In addition, the regression method allows the inference of information for every animal tested, enabling comparisons of different factors with cycle lengths. Our results show that not only increased testis size leads to increased sperm production, but it also reduces the duration of spermatogenesis. The calculated cycle lengths were 8.35 days for S. araneus and 12.12 days for C. russula. The data obtained in the present study provide the basis for future investigations into the effects of metabolic rate and mating systems on the speed of spermatogenesis.
Keywords
Animals, Antimetabolites/diagnostic use, Basal Metabolism/physiology, Bromodeoxyuridine/diagnostic use, Cell Nucleus/drug effects, DNA/biosynthesis, DNA/genetics, Epithelial Cells/drug effects, Epithelial Cells/physiology, Germ Cells/physiology, Kinetics, Male, Meiosis/drug effects, Meiosis/physiology, Mitosis/drug effects, Mitosis/physiology, Organ Size/drug effects, S Phase/physiology, Seminiferous Epithelium/cytology, Seminiferous Epithelium/drug effects, Sexual Behavior, Animal/physiology, Shrews/physiology, Spermatogenesis/physiology, Testis/cytology, Testis/growth & development
Pubmed
Web of science
Open Access
Yes
Create date
24/01/2008 17:33
Last modification date
20/08/2019 15:09
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