Frecuencia de pérdida de la cola en un ensamble de lagartijas de Oaxaca, México

García-Rosales, Aarón; Martínez–Coronel, Matías

doi:10.21829/azm.2016.322945

Cited by 3 publications

(5 citation statements)

References 42 publications

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“…1). Following morphometric data collection, most individuals (54 of 99 males) were permanently marked by toe clipping, then released at their site of capture to avoid measuring the same lizard on multiple occasions (García-Rosales & Martínez-Coronel, 2016).…”

Section: Methodsmentioning

confidence: 99%

Comparative morphology and trophic ecology in a population of the polymorphic lizard Sceloporus minor (Squamata: Phrynosomatidae) from central Mexico

García-Rosales

Ramírez‐Bautista

Stephenson

2019

PeerJ

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Polymorphism among individuals of the same population has generally been linked to alternative reproductive tactics, where different morphs can exhibit differences in their morphological, ecological, and behavioral attributes. These differences may result in a divergence in diet between morphs due to differential exploitation of habitat, morphological differences that influence prey selection, or differential energy expenditure that results in different nutritional needs. The present study analyzes the morphology (morphometry and body mass) and diet of red and yellow male morphs in a population (El Enzuelado) of the lizard Sceloporus minor from central Mexico. No differences between morphs were found for any of the morphometric variables analyzed (snout-vent length, tail length, jaw length, jaw width, head length, head width, head height, tibia length, femur length, forearm length and ventral patch length). In both morphs, allometric growth was observed in all body features analyzed, as well as in morphometric features of the head across seasons. Analysis of stomach contents showed that the diet of red males was composed of 12 categories of prey, while that of yellow males was composed of 10 categories; those categories of diet not shared between morphs (e.g., Isoptera, Psocoptera) were consumed by their respective morph in very low proportions. Categories of diet with the highest values of food importance for both groups were Coleoptera, Orthoptera, and leaves; a similar pattern was seen across seasons. This, in turn, is reflected in low niche breadth values for each morph and a very high niche overlap. There were no significant differences between morphs overall, or between morphs per season, in the weight and volume of stomach contents or in the number of prey items found in stomachs; however, differences in these variables across all males (independent of morph) were recorded between seasons. Likewise, no significant correlations were found between body size (snout-vent length) and the volume of stomach contents for either morph or between lizard mandibular dimensions and the volume of stomach contents for red morph males. For the yellow morph, prey volume unexpectedly decreased significantly with jaw size rather than increasing as expected. Overall, this study adds new information about the morphology and feeding of males in this species, and suggests that in this population, color morphs lack the morphological and ecological differences found in some other species of polymorphic lizard.

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Section: Methodsmentioning

confidence: 99%

Comparative morphology and trophic ecology in a population of the polymorphic lizard Sceloporus minor (Squamata: Phrynosomatidae) from central Mexico

García-Rosales

Ramírez‐Bautista

Stephenson

2019

PeerJ

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“…Different variables may influence the probability of tail loss, such as habitat, sex or age (Castañeda et al, 2011; García‐de la Peña et al, 2004; García‐Rosales & Martínez‐Coronel, 2016; Leyte‐Manrique et al, 2007; Tyler et al, 2016). However, in this study, no differences were recorded in the frequency of tail loss among populations, years, sexes (except for the population of tropical evergreen forest for 2013) or between seasons in S. variabilis .…”

Section: Discussionmentioning

confidence: 99%

“…In species, such as Lacerta muralis (= Podarcis muralis), Uta stansburiana and Sceloporus undulatus, there is variation in the frequency of tail loss between years, which has been attributed to variation in the predation rate (Boag, 1973;Parker, 1994;Turner et al, 1982). Regarding sexes, it has been observed that males generally show a higher frequency of tail loss compared to females, which has been related to the greater exposure of males during courtship and mating (García-de la Peña et al, 2004;García-Rosales & Martínez-Coronel, 2016;Leyte-Manrique et al, 2007). Furthermore, in some species of lizards, males are more colourful than females and are therefore more visible to predators (García-Rosales et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Variations in the frequency of tail loss may therefore be a consequence of a number of different factors, such as the intensity of predation, greater or lesser efficiency of predators in capturing their prey, the ability of prey to escape predators, use of microhabitats, foraging mode or reproductive behaviour, which can vary between seasons, years, sexes, age classes, populations and species (Castañeda et al, 2011;García-de la Peña et al, 2004;García-Rosales & Martínez-Coronel, 2016;Leyte-Manrique et al, 2007;Tyler et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The frequency of tail loss in lizards can vary between sexes (García‐Rosales & Martínez‐Coronel, 2016), age classes (Castañeda et al, 2011; García‐Rosales & Martínez‐Coronel, 2016), different populations of the same species (Castañeda et al, 2011; García‐de la Peña et al, 2004; Leyte‐Manrique et al, 2007; Tyler et al, 2016) and among species that live in sympatry (García‐Rosales & Martínez‐Coronel, 2016). For example, among populations of the same species, it has been reported that those living in an environment with low vegetation cover (open environments) show a higher frequency of tail loss and/or a lower survival rate compared to those who live in environments with more vegetation cover (closed environments; Castañeda et al, 2011; García‐de la Peña et al, 2004; Parker, 1994).…”

Section: Introductionmentioning

confidence: 99%

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Caudal autotomy among populations of the lizard Sceloporus variabilis (Squamata: Phrynosomatidae) in contrasting environments

García‐Rosales,

Cruz‐Elizalde,

Ramírez‐Bautista

et al. 2023

Acta Zoologica

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Caudal autotomy is a behaviour in lizards that favours survival but brings with it some associated costs, mainly loss of energy, which is related to the position of the breaking point. Moreover, the frequency of tail loss can vary at different levels, between sexes, populations, seasons and at an intra‐ and inter‐population level. In this study, we analysed the breaking position of the tails in individuals and frequencies of tail loss between years, sexes, seasons and populations of the lizard Sceloporus variabilis that inhabit contrasting environments. The results showed a low frequency of tail loss at the ends (distal and proximal) of this organ (except for individuals from the xeric scrubland population) and there was a higher proportion of complete than incomplete tails in lizards for all analysed populations. Also, there was no variation in the frequency of tail loss among populations, sexes (except in one population), years or seasons. A higher proportion of organisms with complete tails suggests that this organ is an important element for these lizards. In addition, the lack of variation in the frequency of tail loss may indicate a similar behaviour such as escape from predators among the groups analysed.

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Condición de la cola en dos saurios endémicos de los Andes del norte de Ecuador y primeros registros de bifurcación

Ramírez-Jaramillo¹

2022

Caldasia

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Se caracteriza la cola en dos especies simpátricas de saurios endémicos de Ecuador. Utilizamos como técnicas de muestreo trampas de goma en ocho transectos de 500 m de distancia y trampas de caída de 80x80x80 cm. Para evaluar la condición de las colas se establecieron las categorías: intacta, ausente y regenerada. Entre 2012 y 2014 capturamos 138 saurios, 125 individuos de Stenocercus guentheri y trece de Pholidobolus montium. Alrededor del 61 % de los individuos tenían la cola intacta. Reportamos por primera vez bifurcación de la cola en Stenocercus guentheri; observamos tres individuos con esta característica.

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Frecuencia de pérdida de la cola en un ensamble de lagartijas de Oaxaca, México

Cited by 3 publications

References 42 publications

Comparative morphology and trophic ecology in a population of the polymorphic lizard Sceloporus minor (Squamata: Phrynosomatidae) from central Mexico

Comparative morphology and trophic ecology in a population of the polymorphic lizard Sceloporus minor (Squamata: Phrynosomatidae) from central Mexico

Caudal autotomy among populations of the lizard Sceloporus variabilis (Squamata: Phrynosomatidae) in contrasting environments

Condición de la cola en dos saurios endémicos de los Andes del norte de Ecuador y primeros registros de bifurcación

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