| Cardiac morpho-dynamics in Rana esculenta: influence of sex and season. | |
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MedLine Citation:
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PMID: 16766218 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Morpho-dynamic aspects of the frog (Rana esculenta) heart were correlated to seasonal and sexual traits. The statistical analysis of the data (696 frog specimens: 448 males and 248 females), collected during 8 years of routine research on frog cardiac physiology, indicated that cardiac biology is characterised by sexual dimorphism. The relative cardiac weight of males was higher than that of females of similar size. With respect to the males of similar size, female frogs revealed an increased relative ventricular weight and ventricular contractile capacity. The morphometric analysis showed that the ventricular growth was achieved through significant myocardial enlargement accompanied by a reduction of the lacunary spaces. This is more pronounced in females during the breeding period. The correlation between sexual maturity and ventricular morpho-functional changes revealed that in male frogs sexual maturity correlates with a remarkable increment of the ventricular weight associated with higher values of pulse pressure. This data indicate that sex and season-related factors influence cardiac morpho-dynamics in R. esculenta. |
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Authors:
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Filippo Garofalo; Sandra Imbrogno; Alfonsina Gattuso; Angela Spena; Maria Carmela Cerra |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Comparative biochemistry and physiology. Part A, Molecular & integrative physiology Volume: 145 ISSN: 1095-6433 ISO Abbreviation: Comp. Biochem. Physiol., Part A Mol. Integr. Physiol. Publication Date: 2006 Sep |
Date Detail:
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Created Date: 2006-09-27 Completed Date: 2006-10-17 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9806096 Medline TA: Comp Biochem Physiol A Mol Integr Physiol Country: United States |
Other Details:
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Languages: eng Pagination: 82-9 Citation Subset: IM |
Affiliation:
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Department of Cell Biology, University of Calabria, 87030, Arcavacata di Rende, CS, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Body Weight / physiology Female Heart / growth & development Heart Ventricles / growth & development Male Organ Size Rana esculenta / growth & development*, physiology Seasons* Sex Factors Sexual Behavior, Animal / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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