Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest

Melanophryniscus species from the Selva Paranaense exhibit explosive reproductive strategies and larger males might have greater reproductive success in direct competition for females. The goal of this contribution was to analyze whether there is a difference in body size between males captured ampl...

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Autores principales: Marangoni, Federico, Baldo, Diego
Formato: Artículo revista
Lenguaje:Español
Publicado: Facultad de Ciencias Exactas y Naturales y Agrimensura 2025
Materias:
Sexual selection
Melanophryniscus
Paranaense forest
Argentina
Selecci´ón sexual
Selva Paranaense
Acceso en línea:https://revistas.unne.edu.ar/index.php/fce/article/view/8506
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
id I48-R154-article-8506
record_format ojs
spelling I48-R154-article-85062025-09-18T14:34:26Z Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest Implicaciones del tamaño corporal en el éxito de apareamiento en Melanophryniscus de la Selva Paranaense Marangoni, Federico Baldo, Diego Sexual selection Melanophryniscus Paranaense forest Argentina Selecci´ón sexual Melanophryniscus Selva Paranaense Argentina Melanophryniscus species from the Selva Paranaense exhibit explosive reproductive strategies and larger males might have greater reproductive success in direct competition for females. The goal of this contribution was to analyze whether there is a difference in body size between males captured amplexing and non-amplexing, in the three Melanophryniscus species (M. atroluteus, M. devincenzii and M. Krauczukii) of Paranaense Forest (27°29'25.00 ‘S, 55°40'7.30 ’W), Misiones, Argentina. For this, the following body traits were considered: snout-vent length, arm length and body mass. The differences were evaluated using Type III General Linear Models. In general, males in amplexus showed equal or lower mean values for the three body traits compared to non-amplexing males. Our findings suggest that body size is not under selective pressure and may not play a significant role in mating success in the studied population. Las especies de Melanophryniscus de la Selva Paranaense exhiben estrategias reproductivas explosivas y los machos más grandes podrían tener un mayor éxito reproductivo en la competencia directa por las hembras. El objetivo de esta contribución fue analizar si existe una diferencia en el tamaño corporal entre los machos capturados en amplexo y aquellos que no lo estaban, en las tres especies de Melanophryniscus (M. atroluteus, M. devincenzii y M. krauczukii) de la Selva Paranaense (27°29'25.00 'S, 55°40'7.30 'W), Misiones, Argentina. Para ello, se consideraron las siguientes características corporales: longitud hocico-cloaca, longitud de los brazos y masa corporal. Las diferencias se evaluaron utilizando Modelos Lineales Generales de Tipo III. En general, los machos en amplexo presentaron valores medios iguales o más bajos para las tres características corporales en comparación con los no amplexados. Nuestros hallazgos sugieren que el tamaño corporal no está sujeto a presión selectiva y puede no desempeñar un papel significativo en el éxito reproductivo de la población estudiada. Facultad de Ciencias Exactas y Naturales y Agrimensura 2025-09-10 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/fce/article/view/8506 10.30972/fac.3518506 FACENA; Vol. 35 Núm. 1 (2025); 116-126 1851-507X 0325-4216 spa https://revistas.unne.edu.ar/index.php/fce/article/view/8506/8236
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Sexual selection
Melanophryniscus
Paranaense forest
Argentina
Selecci´ón sexual
Melanophryniscus
Selva Paranaense
Argentina
spellingShingle Sexual selection
Melanophryniscus
Paranaense forest
Argentina
Selecci´ón sexual
Melanophryniscus
Selva Paranaense
Argentina
Marangoni, Federico
Baldo, Diego
Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
topic_facet Sexual selection
Melanophryniscus
Paranaense forest
Argentina
Selecci´ón sexual
Melanophryniscus
Selva Paranaense
Argentina
author Marangoni, Federico
Baldo, Diego
author_facet Marangoni, Federico
Baldo, Diego
author_sort Marangoni, Federico
title Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
title_short Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
title_full Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
title_fullStr Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
title_full_unstemmed Body size implications on the mating success in South American Redbelly toads (Anura: Bufonidae: Melanophryniscus) from the Paranaense Forest
title_sort body size implications on the mating success in south american redbelly toads (anura: bufonidae: melanophryniscus) from the paranaense forest
description Melanophryniscus species from the Selva Paranaense exhibit explosive reproductive strategies and larger males might have greater reproductive success in direct competition for females. The goal of this contribution was to analyze whether there is a difference in body size between males captured amplexing and non-amplexing, in the three Melanophryniscus species (M. atroluteus, M. devincenzii and M. Krauczukii) of Paranaense Forest (27°29'25.00 ‘S, 55°40'7.30 ’W), Misiones, Argentina. For this, the following body traits were considered: snout-vent length, arm length and body mass. The differences were evaluated using Type III General Linear Models. In general, males in amplexus showed equal or lower mean values for the three body traits compared to non-amplexing males. Our findings suggest that body size is not under selective pressure and may not play a significant role in mating success in the studied population.
publisher Facultad de Ciencias Exactas y Naturales y Agrimensura
publishDate 2025
url https://revistas.unne.edu.ar/index.php/fce/article/view/8506
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first_indexed 2025-10-17T05:00:47Z
last_indexed 2025-10-17T05:00:47Z
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