Título

Is erythrocyte size a strategy to avoid hypoxia in Wiegmann’s Torquate Lizards (Sceloporus torquatus)? Field evidence

Autor

JUAN CARLOS GONZALEZ MORALES

ERENDIRA QUINTANA SANCHEZ

HECTOR MANUEL DIAZ ALBITER

PALESTINA GUEVARA FIORE

VICTOR MANUEL FAJARDO GUADARRAMA

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

erythrocyte - ([1480-3283]) hematological parameters - ([1480-3283]) high altitude - ([1480-3283]) hypoxia - ([1480-3283]) Sceloporus torquatus - ([1480-3283]) spiny lizard - ([1480-3283]) MEDICINA Y CIENCIAS DE LA SALUD - (CTI)

Resumen o descripción

This study examined changes in certain hematological parameters in a reptilian model naturally exposed to altitude-associated hypoxia. Four populations of the Mexican lizard Sceloporus torquatus Wiegmann, 1828 (Wiegmann’s Torquate Lizard) from different altitudes were sampled to evaluate erythrocyte count (Erc), hematocrit (Hct), mean corpuscular hemoglobin concentration (MCHC), and erythrocyte size (Ers). Blood was also assayed to determine hemoglobin ([Hb]), glucose, lactate, and electrolyte concentrations. Erc was performed using a Neubauer hemocytometer. Hct was calculated as percentage of packed cell volume by centrifuging blood samples. [Hb] was determined using a Bausch and Lomb Spectronic colorimeter. MCHC was calculated with the formula 100 × [Hb]/Hct. Ers was calculated from blood smear microphotographs analyzed with the Sigma Scan Pro software. Values of serum electrolytes (sodium (Na+), potassium (K+), and calcium (Ca2+)), pH, glucose, and lactate from blood samples were obtained through a blood electrolyte analyzer. Highland populations of S. torquatus exhibited a significant increase in Erc, Hct, Ers, and [Hb]. In contrast, MCHC showed no correlation with altitude. Additionally, significant differences in lactate, Na+, K+, and Ca2+ were observed in highland populations. In general, we found that most hematological parameters were significantly different among lizard populations from different altitudes. This is the first study to report changes in Ers in relation to altitude, which could be a physiological response to hypoxia.

CONACYT 178723

Editor

NRC Research Press

Fecha de publicación

1 de febrero de 2015

Tipo de publicación

Artículo

Recurso de información

http://hdl.handle.net/20.500.11799/67880

Fuente

1480-3283

Idioma

Inglés

Relación

93;

Audiencia

Estudiantes

Investigadores

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DE LA UAEM

Descargas

334