Microhabitat use and selection by Pristidactylus scapulatus (Squamata Leiosauridae) in the Puna region of the Central Andes in Argentina DOI
Franco M. Valdez Ovallez, Ana E. Victorica Erostarbe,

Rodrigo Nieva Cocilio

et al.

Ethology Ecology & Evolution, Journal Year: 2022, Volume and Issue: 35(4), P. 488 - 502

Published: Oct. 18, 2022

Understanding a species use of space is important as it provides information about the potential resources available in its habitat. The objective this work was to evaluate and selection microhabitat relates availability for Pristidactylus scapulatus Puna region Central Andes Argentina. carried out at Quebrada de La Puerta province San Juan data recorded included according established categories. To assess selection, we applied design usage vs calculated Manly index obtain function resource selection. utilised rock greater proportion with respect availability, lesser measure shrub bare soil, whereas rejected cactus dead leaves substrate. showed that substrate significant other microhabitats. We conclude population P. has clearly saxicolous habits, though necessary be aware aspects natural history truly understand how feeding or reproduction hostile environments like Puna. In way contribute scarce existing knowledge biology provide an basis creation future priority areas conservation habitat management plans environments.

Language: Английский

Physiological Status Affect Reptiles Thermoregulation’s Strategy: A Review DOI Creative Commons

Yadi Oktariansyah

BIOVALENTIA Biological Research Journal, Journal Year: 2025, Volume and Issue: 11(1), P. 17 - 31

Published: April 15, 2025

As an ectotherm class, reptiles' thermoregulation has unique mechanisms through the combination of physiological traits, behavioral adjustments, and environmental aspects. Reptiles need to do since their body temperature is affected by experience status, which plays important role in thermoregulatory behavior. This study explores response strategy under various states, representing facts about complex mechanism. Specific statuses such as life stage, reproduction immune health system, dehydration, digestive have been deeply explored researchers identify effects these traits on strategies. These significantly affect temperature, having low Tb dehydration state choosing higher promote food digestion state. However, consistency results may vary among reptile species that refer more adjustment mating process rather than status. Different stages also influence implicate evolutionary mechanism for gravid females obtain a thermally suitable environment, especially embryos. Under reptiles alter microhabitat selection encounter thermal environments water desiccation or climate change threats. Further research combines adjustment, aspects biophysical model can contribute demonstrating how strategies compromise different statuses. For reptiles, strongly associated with population loss. Therefore, this relevant topics stand proxy conservation regulation policymakers reduce unfavorable environment habitat degradation.

Language: Английский

Citations

0
Intraspecific variability of bite force in Achala copper lizards in a sexual selection context: who bites harder and when and why? DOI
Sergio Naretto, Facundo Cabezas-Cartes, Guadalupe López Juri

et al.

Biological Journal of the Linnean Society, Journal Year: 2022, Volume and Issue: 136(2), P. 282 - 292

Published: April 14, 2022

Abstract Bite force in lizards is involved key behaviours such as intrasexual agonistic and intersexual interactions. The relationship between morphology function dynamic sexual pressures can affect bite performance differently sexes, especially considering the biting position temporal changes related to reproductive cycle. Achala copper lizard (Pristidactylus achalensis) a highly dimorphic with short season. Both sexes present scars; however, scar varies implying different functions. We studied factors influencing sex, body size, head seasonality. also compared maximum at two positions (frontal lateral) (copulation fighting), quantified incidence pattern sexes. Overall, males harder than females lateral bites were frontal ones. Although did not vary seasonally males, decreased after period. Harder may confer advantages mating competition size while benefit from seasonal enhancement of for mate rejection cases unwanted copulation.

Language: Английский

Citations

4
Thermal biology and locomotor performance of the Andean lizardLiolaemus fitzgeraldi(Liolaemidae) in Argentina DOI
Franco M. Valdez Ovallez, Rodrigo Gómez Alés,

Vanesa Astudillo

et al.

Acta Zoologica, Journal Year: 2022, Volume and Issue: 104(4), P. 561 - 574

Published: Sept. 26, 2022

Abstract Ectotherms thermoregulate to maintain their body temperature within the optimal range needed for performing vital functions. The effect of climate change on lizards has been studied as regards sensitivity locomotor performance environmental temperatures. We thermoregulatory efficiency and Liolaemus fitzgeraldi in Central Andes Argentina. determined temperature, micro‐environmental temperatures operative field. In laboratory, we measured preferred calculated index efficiency. estimated thermal locomotion by measuring sprint speed (initial velocity long sprint) endurance at five different Body was not associated with either nor did it show differences Thermoregulatory moderate (0.61). Initial trials showed temperatures; however, not. Moreover, no significant among themselves. conclude that respect is an eurythermic lizard experiences a large variation flexibility cold.

Language: Английский

Citations

4
Thermo-physiological changes and reproductive investment in a liolaemid lizard at the extreme of the slow-fast continuum DOI Creative Commons
Oscar A. Stellatelli,

Mauro Iván Bonavita,

Candela Victorel

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(12)

Published: June 3, 2024

Gravid female lizards often experience reduced thermal preferences and impaired locomotor performance. These changes have been attributed to the physical burden of clutch, but some authors suggested that they may be due physiological adjustments. We compared biology performance lizard Liolaemus wiegmannii 1 week before after oviposition. found gravid females had a preference 1°C lower than non-gravid females. This was accompanied by change in dependence maximum running speed. The optimum for 2.6°C oviposition after. At relatively low temperatures (22 26°C), speeds were up 31% higher However, at above 26°C, achieved similar (∼1.5 m s-1) regardless reproductive stage. magnitude parameters L. independent relative clutch mass (clutches weighed 89% post-oviposition body mass). suggests are not simply mass, also simultaneously adjusted their own physiology short period order improve allocated energy embryonic development during late Our findings implications understanding mechanisms underlying life histories on fast extreme slow-fast continuum, where exhaustion could play an important role.

Language: Английский

Citations

0
Restricted use of space in an endemic lizard of the Andes: addressing the effects of intrinsic and environmental factors DOI
Ana E. Victorica Erostarbe, Gustavo Alfredo Fava, Juan Carlos Acosta

et al.

Behavioral Ecology and Sociobiology, Journal Year: 2022, Volume and Issue: 76(1)

Published: Jan. 1, 2022

Language: Английский

Citations

2
Microhabitat use and selection by Pristidactylus scapulatus (Squamata Leiosauridae) in the Puna region of the Central Andes in Argentina DOI
Franco M. Valdez Ovallez, Ana E. Victorica Erostarbe,

Rodrigo Nieva Cocilio

et al.

Ethology Ecology & Evolution, Journal Year: 2022, Volume and Issue: 35(4), P. 488 - 502

Published: Oct. 18, 2022

Understanding a species use of space is important as it provides information about the potential resources available in its habitat. The objective this work was to evaluate and selection microhabitat relates availability for Pristidactylus scapulatus Puna region Central Andes Argentina. carried out at Quebrada de La Puerta province San Juan data recorded included according established categories. To assess selection, we applied design usage vs calculated Manly index obtain function resource selection. utilised rock greater proportion with respect availability, lesser measure shrub bare soil, whereas rejected cactus dead leaves substrate. showed that substrate significant other microhabitats. We conclude population P. has clearly saxicolous habits, though necessary be aware aspects natural history truly understand how feeding or reproduction hostile environments like Puna. In way contribute scarce existing knowledge biology provide an basis creation future priority areas conservation habitat management plans environments.

Language: Английский

Citations

1