Efectos del cambio climático en una especie de lagartija termófila de amplia distribución (Dipsosaurus dorsalis): un enfoque ecofisiológico

Abstract

Efectos del cambio climático en una especie de lagartija termófila de amplia distribución (Dipsosaurus dorsalis): un enfoque ecofisiológico Effects of climate change on a widely distributed thermophilic lizard (Dipsosaurus dorsalis): an ecophysiological approach

Thermoregulation in a saxicolous population of the lizard Urosaurus ornatus from the northern Chihuahuan Desert, Mexico

“…Current research suggests ectothermic organisms from desert environments have a high extinction probability under current rates of global warming because sufficiently rapid adaptive change in T b is unlikely (Ballesteros- Deutsch et al, 2008;Sinervo et al, 2010Sinervo et al, , 2018Gadsden et al, 2012;Paranjpe et al, 2013;Lara-Reséndiz et al, 2015;Minoli et al, 2019). However, some species may be relatively resilient to changes in their thermal environment with climate change (e.g., Dipsosaurus dorsalis; Lara-Resendiz et al, 2019). Nevertheless, impacts of rising environmental temperatures on populations depend on an ectotherm's capacity to compensate through acclimation, thermoregulatory behaviors, such as habitat selection; change in daily activity patterns; and shifts in the phenology of reproduction and activity (Deutsch et al, 2008;Huey et al, 2009;Kearney et al, 2009;Valenzuela-Ceballos et al, 2015).…”

“…This range represents a broader thermal threshold of activity (VT min -VT max ), because we consider that lizards could still be active in contrast with Sinervo et al (2010), who consider the threshold when T e exceeded mean T p . The VT min -VT max range as a threshold to calculate h a and h r has been used in recent studies on the extinction risk of lizards (e.g., Lara-Resendiz et al, 2019;Kubisch et al, 2016;Yuan et al, 2018). Here we calculated and compared h a and h r for each season (June and October).…”

Figure 1 from: Gómez-Cruz A, Santos-Hernández NG, Cruz JA, Ariano-Sánchez D, Ruiz-Castillejos C, Espinoza-Medinilla EE, De Fuentes-Vicente JA (2021) Effect of climate change on the potential distribution of Heloderma alvarezi (Squamata, Helodermatidae). ZooKeys 1070: 1-12. https://doi.org/10.3897/zookeys.1070.69186

“…Niche models were projected to future scenarios for the years 2041-2060 and 2061-2080 using a GCM MIROC 6 model under different Representative Concentration Pathways (RCPs). Models were evaluated under simulated radiative forcings of 4.5 and 7 W/m 2 to develop optimistic and pessimistic climate change forecasts, respectively (Lara-Reséndiz et al 2019;Pérez 2020). To determine anthropogenic impact on the distribution of H. alvarezi, a carbon footprint estimation layer was overlaid on the niche models generated (Venter et al 2016(Venter et al , 2018.…”

“…Due to their high species-richness, lizards constitute a major group of conservation concern (e.g., Sinervo et al 2010;Diele-Viegas et al 2020;Rozen-Rechels et al 2020). In Mexico, research studies focusing on the effects of climate change on reptiles, and specifically on lizards, have been increasing in the last decade (e.g., Sinervo et al 2017;Lara-Reséndiz et al 2019Domínguez-Guerrero et al 2020;Gadsden et al 2020). Nevertheless, studies relating to helodermatids are scarce.…”

Diversidad herpetofaunística de sitios restaurados y perturbados en el delta del río Colorado, Baja California, México

“…De manera similar, una de las especies más comunes de esta región es la iguana del desierto Dipsosaurus dorsalis, la cual tampoco se registró en este estudio. Dicha especie está asociada a parches de vegetación de gobernadora (Larrea tridentata), la cual es escaza en ambos sitios, por lo que es necesario que dicha planta sea considerada en futuros planes de reforestación (Lara-Resendiz et al, 2019;Norris, 1953). Cabe señalar, que la mayoría de las especies de lagartijas no encontradas son especies terrestres que utilizan hábitats abiertos, dichas especies han sido identificadas como las más vulnerables a los efectos del cambio climático, al tener una gama más limitada de microhábitats para refugiarse a diferencia de especies arborícolas (Flesch et al, 2017).…”