Masa relativa de la camada en Phrynosoma orbiculare (Squamata: Phrynosomatidae) en el Parque Estatal Sierra Morelos, Toluca, Estado de México

Suárez-Rodríguez, Orlando; Suárez-Varón, Gabriel; Chávez-Siles, Fernanda; Pérez-Arriaga, Fernanda; Andrade-Soto, Gabriel; Aguilar-Isaac, Lizet; Sherbrooke, Wade C.; Hernández‐Gallegos, Oswaldo

doi:10.22201/ib.20078706e.2018.1.1925

Cited by 7 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The trade‐off between the number and size of offspring was not detected. That is, a negative relationship between these traits as those observed in other works (Bastiaans et al, 2013; Plummer, 1992; Suárez‐Rodríguez et al, 2018) was no detected. Although in some cases the reason may be deficient control of the effect of body size on the reproductive variables analysed (Ford & Seigel, 1989), some factors have been detected that may obscure the relationship.…”

Section: Discussionsupporting

confidence: 50%

“…In practice, however, to what extent the adequacy maximization assumption holds is difficult to know. Consequently, many studies assess reproductive effort at a particular time period using the clutch/litter relative mass (RCM/RLM), or the fraction of body mass devoted to reproduction (Gerald & Miskell, 2007; López‐Alcaide et al, 2020; Suárez‐Rodríguez et al, 2018). This expresses, in relative terms, the extra mass load carried by pregnant females and is negatively related to their locomotor performance (Vitt & Price, 1982).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reproductive traits and change in body shape of neonates in the Oak Forest Skink, Plestiodon lynxe

et al. 2022

View full text Add to dashboard Cite

Reproductive traits are critically important for understanding how organisms adapt to their respective environments. In this study, we provide information on relative litter mass (RLM) and other litter and neonate related characters of nine female Plestiodon lynxe captured in the field. We also recorded seven body dimensions in 16 neonates and 15 two‐month juveniles, and on the basis of these dimensions we compared the body shape of these two age classes to detect changes in the proportions of body parts. The average litter size (4.55) is larger than that found in other viviparous species of Plestiodon, but smaller than those of congeneric oviparous species of similar size. However, the average body size of newborns (25.49 mm) is similar to that of other oviparous and viviparous species of Plestiodon. The average RLM was relatively high (0.36). The relative size of the head and limbs becomes proportionally smaller, whereas the axilla‐groin length becomes proportionally larger in the first 2 months of life. We suggest that these changes are related to changes in locomotion and microhabitat use.

show abstract

Section: Discussionsupporting

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Reproductive traits and change in body shape of neonates in the Oak Forest Skink, Plestiodon lynxe

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Increases in heat tolerance, cold tolerance, and the preferred temperature across years hint at potentially rapid evolutionary change because the period between observations (1 year) spans the generation time for this species (Suárez‐Rodríguez et al, 2018), but this possibility requires further exploration. Due to the successful recapture of individuals between years, we were able to investigate whether intragenerational plasticity was contributed to increases in thermal physiology.…”

Section: Discussionmentioning

confidence: 99%

Thermal physiology responds to interannual temperature shifts in a montane horned lizard, Phrynosoma orbiculare

et al. 2020

View full text Add to dashboard Cite

As climate change marches on, rapidly rising temperatures shatter records every year, presenting ever‐growing physiological challenges to organisms worldwide. Ectotherms rely on behavioral and physiological plasticity to contend with environmental fluctuations. Nonetheless, our understanding of thermal plasticity has been largely limited to laboratory settings. Here, we test whether aspects of thermal physiology respond to interannual shifts in thermal environment in a natural population of Phrynosoma orbiculare, a montane horned lizard, from Hidalgo, Mexico. At our field site, 2019 was markedly warmer than the year that preceded it. We detected population‐level increases in three key thermal physiological traits: preferred temperature, the critical thermal minimum, and the critical thermal maximum. Thus, thermal phenotypes appear to shift in tandem in response to environmental fluctuations. A subset of individuals were resampled across years, allowing insight into plastic shifts within an organism's lifetime. We detected parallel increases in these lizards for the preferred temperature and the critical thermal minimum, but not for the critical thermal maximum. Our results support a growing body of literature indicating that preferred conditions and cold tolerance can be highly labile over the course of an organism's lifetime, whereas hardening over shorter time periods is more common for heat tolerance. Given that heat tolerance increased at the population‐level, but not in resampled individuals, it is possible that rapid evolution occurred due to temperature increases. In short, physiological shifts can be observed in natural populations over relatively short timespans, and these shifts might reflect a combination of evolutionary and acclimatory responses.

show abstract

“…Both ecological and evolutionary factors may adjust the reproductive output in lizards (Suárez-Rodríguez et al 2018;Suárez-Varón et al 2019). In general, lizards have clutch sizes that vary with the female´s size, foraging mode or predator escape tactics (Vitt and Price 1982).…”

Section: Discussionmentioning

confidence: 99%

Aspidoscelis costatus costatus (Squamata, Teiidae): high elevation clutch production for a population of whiptail lizards

Granados-González¹,

Pérez-Almazán²,

Gómez-Benitez³

et al. 2020

Herpetozoa

Self Cite

View full text Add to dashboard Cite

Clutch size and number of clutches per reproductive cycle are important life history traits that can be influenced by anatomical, physiological, evolutionary, and ecological factors. This report on the clutch size and number of clutches of an endemic Mexican whiptail lizard, Aspidoscelis costatus costatus (Cope, 1878), is based on a study of population at an unusually high elevation for a member of this genus. The study site is located in Ixtapan de la Sal, southeastern Estado de México, Central Mexico, at 2090 m a.s.l. Lizards were sampled in June 2006, and from May to July 2007, where females of Aspidoscelis costatus costatus were collected by hand along a drift fence. Female reproductive condition was evaluated based on abdominal palpation for presence of developing eggs; clutch size was determined by actual counts of either vitellogenic follicles or oviductal eggs. The smallest reproductive female was 77 mm snout-vent length; females produced a minimum of two clutches during the breeding season, the mean clutch size of 6.5 eggs (n = 33) was one of the largest reported for the genus. However, both length and width of its eggs, and the relative clutch mass have not been diminished by development of a large clutch. Additionally, comparisons of clutch size were undertaken within the polytypic A. costatus complex, within the genus Aspidoscelis, and between certain genera of whiptail lizards. This apparently represents the first study of whiptail lizards (genus Aspidoscelis), assessing the aforementioned reproductive characteristics, in a population above 2000 m.

show abstract

Masa relativa de la camada en Phrynosoma orbiculare (Squamata: Phrynosomatidae) en el Parque Estatal Sierra Morelos, Toluca, Estado de México

Cited by 7 publications

References 26 publications

Reproductive traits and change in body shape of neonates in the Oak Forest Skink, Plestiodon lynxe

Reproductive traits and change in body shape of neonates in the Oak Forest Skink, Plestiodon lynxe

Thermal physiology responds to interannual temperature shifts in a montane horned lizard, Phrynosoma orbiculare

Aspidoscelis costatus costatus (Squamata, Teiidae): high elevation clutch production for a population of whiptail lizards

Contact Info

Product

Resources

About