Hypoxia by Altitude and Welfare of Captive Beaded Lizards (Heloderma Horridum) in Mexico: Hematological Approaches

Guadarrama, Sonia S.; Domínguez-Vega, Hublester; Diaz-Albiter, Hector; Quijano, Alejandro; Bastiaans, Elizabeth; Carrillo-Castilla, Porfirio; Manjarrez, Javier; Gómez-Ortiz, Yuriana; Fajardo, Victor

doi:10.1080/10888705.2018.1562350

Cited by 5 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The present study differs from similar studies that have been focused on haematology and biochemistry in wild or laboratory-housed populations of other gecko species (Sacchi et al 2007;Mayer et al 2011;Olayemi 2011;Salamat et al 2013). The effects of age, sex, reproductive activity, altitude, season and feeding activity on lizard blood profiles have been well documented (Knotek et al 2003;Pejrilova et al 2004;Knotkova et al 2005;Gonzalez-Morales et al 2015, 2017Guadarrama et al 2019) and confirmed for different gecko species (Sacchi et al 2007;Mayer et al 2011;Olayemi 2011). Based on these findings, only captive adult males in good health condition were included in the present study.…”

Section: Discussionmentioning

confidence: 88%

Blood profile in captive adult male leopard geckos (Eublepharis macularius)

Knotková¹,

Morici²,

Oliveri³

et al. 2019

Vet. Med.

View full text Add to dashboard Cite

The aim of this study was to determine blood profile data in captive adult male leopard geckos. Animals were manually restrained with the head and neck extended. The right external jugular vein was punctured with a pre-heparinised needle and insulin syringe. The means and standard deviations for haemoglobin concentration, packed cell volume, total red blood cell count, total white blood cell count and counts for heterophils, basophils, eosinophils, monocytes, azurophils and lymphocytes for 20 healthy male leopard geckos were 72.58 ± 11.03 g/l, 25.40 ± 3.68%, 0.85 ± 0.14 1012/l, 10.47 ± 2.58 109/l, 1.83 ± 0.92 109/l, 1.67 ± 1.04 109/l, 0.29 ± 0.33 109/l, 0.48 ± 0.40 109/l, 2.03 ± 1.07 109/l and 4.17 ± 2.12 109/l, respectively. The means and standard deviations for total protein, albumin, globulins, glucose, uric acid, aspartate aminotransferase, creatine kinase, calcium, phosphorus and potassium for 20 healthy adult captive male leopard geckos were 55.60 ± 7.52 g/l, 16.45 ± 2.37 g/l, 39.15 ± 5.74 g/l, 6.18 ± 1.35 mmol/l, 67.95 ± 42.63 µmol/l, 0.83 ± 0.42 µkat/l, 25.40 ± 29.46 µkat/l, 3.05 ± 0.18 mmol/l, 1.4 ± 0.23 mmol/l, and 5.78 ± 0.58 mmol/l, respectively. This is the first study to report blood haematology and biochemistry values for a group of captive adult male leopard geckos.

show abstract

Section: Discussionmentioning

confidence: 88%

Blood profile in captive adult male leopard geckos (Eublepharis macularius)

Knotková¹,

Morici²,

Oliveri³

et al. 2019

Vet. Med.

View full text Add to dashboard Cite

show abstract

“…Similarly, across several species of anurans, species from higher altitudes also had smaller erythrocytes (Navas & Chauí-Berlinck, 2007), whereas in lizards, within-species comparisons showed mixed effects of altitude on erythrocyte size (González-Morales et al, 2015Guadarrama et al, 2020). Size and shape affect surface area to volume ratio, meaning that small erythrocytes will exchange oxygen more efficiently than larger cells, and ellipsoid cells are more efficient than round cells (Hartman & Lesser, 1963).…”

Section: Altitude and Climatic Effects On Erythrocyte Sizementioning

confidence: 99%

“…For example, differences in oxygen availability, for example, altitude, can drive variation in blood oxygen‐carrying capacity (González‐Morales et al, 2015; Lu et al, 2015; Monge & Leon‐Velarde, 1991; Navas & Chauí‐Berlinck, 2007). Across‐species, erythrocytes of anurans are smaller at higher altitudes (Navas & Chauí‐Berlinck, 2007), whereas comparisons within species of lizards show increasing erythrocyte size with higher altitude (González‐Morales et al, 2017), largest sizes at intermediate altitudes (González‐Morales et al, 2017) or decreasing erythrocyte size with higher altitude (Guadarrama et al, 2020). Similarly, species with seasonal altitudinal migration can show plastic size changes in erythrocyte size; alpine accentors ( Prunella collaris ), for example, have smaller erythrocytes when living at high altitude (Haas & Janiga, 2020; Janiga et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Ecological and life‐history correlates of erythrocyte size and shape in Lepidosauria

Penman

Deeming

Soulsbury

2022

J of Evolutionary Biology

View full text Add to dashboard Cite

Blood oxygen‐carrying capacity is shaped both by the ambient oxygen availability as well as species‐specific oxygen demand. Erythrocytes are a critical part of oxygen transport and both their size and shape can change in relation to species‐specific life‐history, behavioural or ecological conditions. Here, we test whether components of the environment (altitude), life history (reproductive mode, body temperature) and behaviour (diving, foraging mode) drive erythrocyte size variation in the Lepidosauria (lizards, snakes and rhynchocephalians). We collected data on erythrocyte size (area) and shape (L/W: elongation ratio) from Lepidosauria across the globe (N = 235 species). Our analyses show the importance of oxygen requirements as a driver of erythrocyte size. Smaller erythrocytes were associated with the need for faster delivery (active foragers, high‐altitude species, warmer body temperatures), whereas species with greater oxygen demands (diving species, viviparous species) had larger erythrocytes. Erythrocyte size shows considerable cross‐species variation, with a range of factors linked to the oxygen delivery requirements being major drivers of these differences. A key future aspect for study would include within‐individual plasticity and how changing states, for example, pregnancy, perhaps alter the size and shape of erythrocytes in Lepidosaurs.

show abstract