Morphological characteristics of blood cells in monitor lizards:is erythrocyte size linked to actual body size?  

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作  者:Petra FRÝDLOVÁ Jan HNÍZDO Lenka CHYLÍKOVÁ OlgaŠIMKOVÁ Veronika CIKÁNOVÁ Petr VELENSKÝ Daniel FRYNTA 

机构地区:[1]Department of Zoology,Charles University in Prague,Prague,Czech Republic [2]Animal Clinic,Prague,Czech Republic [3]Prague Zoo,Prague,Czech Republic

出  处:《Integrative Zoology》2013年第1期39-45,共7页整合动物学(英文版)

基  金:supported by grant SVV-2012-265206;by the Grant Agency of Charles University(No.62910/2010).

摘  要: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.

关 键 词:blood parameters body size erythrocyte size metabolic theory VARANIDAE 

分 类 号:R73[医药卫生—肿瘤]

 

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