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Morphological characteristics of blood cells in monitor lizards: is erythrocyte size linked to actual body size
P. Frýdlová, J. Hnízdo, L. Chylíková, O. Simková, V. Cikánová, P. Velenský, D. Frynta,
Language English Country Australia
Document type Comparative Study, Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Basal Metabolism physiology MeSH
- Species Specificity MeSH
- Erythrocytes cytology physiology MeSH
- Lizards anatomy & histology classification physiology MeSH
- Blood Cells cytology physiology MeSH
- Leukocytes cytology physiology MeSH
- Oxygen Consumption physiology MeSH
- Cell Size * MeSH
- Body Size * MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
Blood cell morphology and count are not uniform across species. Recently, between-species comparisons revealed that the size of red blood cells is associated with body size in some lizard taxa, and this finding was interpreted in the context of the metabolic theory. In the present study, we examined the numbers and the size of blood cells in 2 species of monitor lizards, the mangrove-dwelling monitor (Varanus indicus) and the savannah monitor (V. exanthematicus), and we compared these traits in individuals of different body size. The results revealed that during the course of ontogeny, the size of red blood cells increases with body mass. Because the mass-specific metabolic rate decreases with body size and the cell volume-to-surface ratio decreases with the cell size, changes in the erythrocyte size might be the result of oxygen transport adjustment.
References provided by Crossref.org
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