Publicado

2025-03-14

SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN

Dimorfismo sexual en Lysapsus bolivianus (Anura:Hylidae) en una llanura amazónica

DOI:

https://doi.org/10.15446/abc.v30n1.112939

Palabras clave:

morphometry, head length, growth rate, shape dimorphism, eastern Amazon (en)
morfometría, longitud de la cabeza, tasa de crecimiento, dimorfismo de forma, Amazonía oriental (es)

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Sexual dimorphism (SD) in morphology may be attributed to a variety of ecological pressures, including sexual selection, differential growth rate, age at maturity, longevity, and niche partitioning. This morphological variation between the sexes can help us better understand the evolution of life histories and fill gaps about species/populations from less-explored regions. We investigated sexual dimorphism in morphometric characters of Lysapsus bolivianus from a floodplain environment in Eastern Amazon based on 273 specimens collected between 2013 to 2019. Females of L. bolivianus attain larger body sizes (Snout-to-Vent Length), but males have proportionally higher heads than females. Previous studies indicate that SSD in L. bolivianus can be linked to differential growth rate and age to maturity between sexes, whereas differences in head morphometry can be explained by differences in prey volume ingested by males and females. Nevertheless, the species inhabits a highly seasonal environment and bear a high pressure of predation. In this sense, males and females may cope with different selective pressures due to size differences.

El dimorfismo sexual (SD) en la morfología puede atribuirse a una variedad de presiones ecológicas, incluida la selección sexual, la tasa de crecimiento diferencial, la edad de madurez, la longevidad y la división de nichos. Esta variación morfológica entre sexos puede ayudarnos a comprender mejor la evolución de las historias de vida y llenar vacíos sobre especies/poblaciones de regiones menos exploradas. Investigamos el dimorfismo sexual en caracteres morfométricos de Lysapsus bolivianus de un ambiente de llanura aluvial en el este de la Amazonia con base en 273 especímenes recolectados entre 2013 y 2019. Las hembras de L. bolivianus alcanzan tamaños corporales más grandes (longitud del hocico a la ventilación), pero los machos tienen tamaños corporales proporcionalmente mayores. cabezas que las hembras. Estudios anteriores indican que la SSD en L. bolivianus puede estar relacionada con la tasa de crecimiento diferencial y la edad hasta la madurez entre sexos, mientras que las diferencias en la morfometría de la cabeza pueden explicarse por diferencias en el volumen de presas ingeridas por machos y hembras. Sin embargo, la especie habita en un entorno altamente estacional y soporta una alta presión de depredación. En este sentido, machos y hembras pueden afrontar diferentes presiones selectivas debido a diferencias de tamaño.

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Cómo citar

APA

Sanches, P. R., Melo-Furtado, M. F. & Eduardo Costa-Campos, C. (2025). SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN. Acta Biológica Colombiana, 30(1), 89–94. https://doi.org/10.15446/abc.v30n1.112939

ACM

[1]
Sanches, P.R., Melo-Furtado, M.F. y Eduardo Costa-Campos, C. 2025. SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN. Acta Biológica Colombiana. 30, 1 (feb. 2025), 89–94. DOI:https://doi.org/10.15446/abc.v30n1.112939.

ACS

(1)
Sanches, P. R.; Melo-Furtado, M. F.; Eduardo Costa-Campos, C. SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN. Acta biol. Colomb. 2025, 30, 89-94.

ABNT

SANCHES, P. R.; MELO-FURTADO, M. F.; EDUARDO COSTA-CAMPOS, C. SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN. Acta Biológica Colombiana, [S. l.], v. 30, n. 1, p. 89–94, 2025. DOI: 10.15446/abc.v30n1.112939. Disponível em: https://revistas.unal.edu.co/index.php/actabiol/article/view/112939. Acesso em: 28 dic. 2025.

Chicago

Sanches, Patrick Ribeiro, Mayara Fabiana Melo-Furtado, y Carlos Eduardo Costa-Campos. 2025. «SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN». Acta Biológica Colombiana 30 (1):89-94. https://doi.org/10.15446/abc.v30n1.112939.

Harvard

Sanches, P. R., Melo-Furtado, M. F. y Eduardo Costa-Campos, C. (2025) «SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN», Acta Biológica Colombiana, 30(1), pp. 89–94. doi: 10.15446/abc.v30n1.112939.

IEEE

[1]
P. R. Sanches, M. F. Melo-Furtado, y C. Eduardo Costa-Campos, «SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN», Acta biol. Colomb., vol. 30, n.º 1, pp. 89–94, feb. 2025.

MLA

Sanches, P. R., M. F. Melo-Furtado, y C. Eduardo Costa-Campos. «SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN». Acta Biológica Colombiana, vol. 30, n.º 1, febrero de 2025, pp. 89-94, doi:10.15446/abc.v30n1.112939.

Turabian

Sanches, Patrick Ribeiro, Mayara Fabiana Melo-Furtado, y Carlos Eduardo Costa-Campos. «SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN». Acta Biológica Colombiana 30, no. 1 (febrero 12, 2025): 89–94. Accedido diciembre 28, 2025. https://revistas.unal.edu.co/index.php/actabiol/article/view/112939.

Vancouver

1.
Sanches PR, Melo-Furtado MF, Eduardo Costa-Campos C. SEXUAL DIMORPHISM IN Lysapsus bolivianus (ANURA: HYLIDAE) IN AN AMAZONIAN FLOODPLAIN. Acta biol. Colomb. [Internet]. 12 de febrero de 2025 [citado 28 de diciembre de 2025];30(1):89-94. Disponible en: https://revistas.unal.edu.co/index.php/actabiol/article/view/112939

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