Growing towards disparity: geometric morphometrics reveals sexual and allometric differences in Aparasphenodon brunoi (Anura: Hylidae: Lophyohylinae) head shape

Murta-Fonseca, Roberta Azeredo; Folly, Manuella; Carmo, Luiz Fernando; Martins, Angele

doi:10.31017/cdh.2020.(2019-032)

Cited by 4 publications

(2 citation statements)

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“…Variation in morphological traits scales with body size, ranging from the perfect covariance of a trait with body size (isometry) to highly uncorrelated, where morphological traits grow more or less slowly than body size (Fairbairn, 1997). The ontogenetic allometry is the source of morphological variation during the growth process (Murta-Fonseca et al, 2020). In our study, the allometric relationships between SVL and morphological traits were highly consistent, with most of the morphological characters showing negative allometric patterns or hypoallometry in many traits and the slopes of allometric correlation of many traits were lower in salamanders from the lake than captivity.…”

Section: Discussionmentioning

confidence: 99%

Diferenciación morfológica en poblaciones de Ambystoma dumerilii en condiciones de cautiverio y vida libre

Ramírez-López,

Suazo-Ortuño,

Escalera-Vázquez

et al. 2023

Rev.Mex.Biodiv.

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Ambystoma dumerilii, conocido como “achoque”, es una salamandra microendémica del lago de Pátzcuaro, considerada como en peligro crítico. Las principales amenazas son los altos niveles de contaminación del agua y de eutrofización, además de las especies invasoras dentro del hábitat del achoque. Por estas razones, un importante esfuerzo de conservación se ha enfocado en la crianza del achoque en cautiverio. Sin embargo, el cautiverio es un estresor derivado de las condiciones no óptimas que pueden tener importantes consecuencias fisiológicas que se reflejan en las condiciones corporales. Por tanto, nuestro objetivo fue evaluar la condición de individuos de A. dumerilii a través del análisis de la morfología utilizando diferentes parámetros como tallas, morfometría geométrica, asimetría fluctuante y alometría, en individuos del lago de Pátzcuaro y en cautiverio. Encontramos que casi todos los rasgos tienen una relación alométrica negativa con el tamaño corporal en individuos de ambas condiciones. Nuestros resultados mostraron que los individuos del lago presentaron mayores tamaños en los caracteres morfológicos, cuerpos más delgados y mayores niveles de asimetría fluctuante que los individuos en cautiverio, todos estos resultados son consistentes en el contexto del desempeño con mayores adaptaciones potenciales para aumentar el rendimiento del nado que los individuos en cautiverio.

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Section: Discussionmentioning

confidence: 99%

Diferenciación morfológica en poblaciones de Ambystoma dumerilii en condiciones de cautiverio y vida libre

Ramírez-López,

Suazo-Ortuño,

Escalera-Vázquez

et al. 2023

Rev.Mex.Biodiv.

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“…Nyctimantis Boulenger, 1882 comprises seven species of Casque-headed treefrogs distributed in the Amazonian and Atlantic rainforests (Blotto et al 2020). Nyctimantis brunoi (Miranda-Ribeiro, 1920) is the most well-known species of the genus, with several studies related to ecological issues (e. g., Trueb 1970, Andrade and Abe 1997, Teixeira et al 2002, Mesquita et al 2004, Wogel et al 2006, Jared et al 2015, Carmo and Woitovicz-Cardoso 2018, Murta-Fonseca et al 2020. As in other species of the genus, N.…”

Section: Introductionmentioning

confidence: 99%

High prevalence of anomalies in Nyctimantis brunoi (Anura: Hylidae) from a restinga protected area in southeastern Brazil

et al. 2021

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In the present study we monitored a population of Nyctimantis brunoi, a species commonly found in restingas of southeastern Brazil. Field activities were carried out in the Parque Nacional da Restinga de Jurubatiba (PNRJ), a protected area located in the northern portion of the state of Rio de Janeiro. Specimens were sampled through a complete species inventory. We analyzed 218 individuals, 32 (14.7%) of which have anomalies. Additionally, a subsample of 15 specimens were radiographed to verify the occurrence of skeletal anomalies not externally detectable and to verify if the classification of anomalies attributed by means of external examination are detectable in the osteological structure of the specimen. There are 12 types of anomalies recognized in this population, three of them only detectable through internal investigation (radiography). We verified that most of anomalies externally detectable were correctly classified when compared to the osteological morphology of the radiographed specimens. Thus, in this investigation, the study of external malformations was capable to detect 60% of the types of anomalies. We conclude that further ecotoxicological and epidemiological studies of the population of N. brunoi in the PNRJ are necessary to establish the origins of anomalies in this species.

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Does a male nest builder have the same head shape as his mate? Sexual dimorphism in Leptodactylus fuscus (Anura: Leptodactylidae)

Melo-Moreira

Murta-Fonseca

Galdino

et al. 2021

Zoologischer Anzeiger

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Growing towards disparity: geometric morphometrics reveals sexual and allometric differences in Aparasphenodon brunoi (Anura: Hylidae: Lophyohylinae) head shape

Cited by 4 publications

References 0 publications

Diferenciación morfológica en poblaciones de Ambystoma dumerilii en condiciones de cautiverio y vida libre

Diferenciación morfológica en poblaciones de Ambystoma dumerilii en condiciones de cautiverio y vida libre

High prevalence of anomalies in Nyctimantis brunoi (Anura: Hylidae) from a restinga protected area in southeastern Brazil

Does a male nest builder have the same head shape as his mate? Sexual dimorphism in Leptodactylus fuscus (Anura: Leptodactylidae)

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