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      Advertisement call and female sexual cycle in Uruguayan populations of Physalaemus henselii (Anura, Leiuperidae) Translated title: Canto de anuncio y ciclo sexual femenino en poblaciones uruguayas de Physalaemus henselii (Anura, Leiuperidae)

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          Abstract

          Physalaemus henselii (Peters, 1872) is a little known leiuperid frog that has not been studied since the 1960’s. Herein, we redescribe its advertisement call, and assess the female sexual cycle and the reproductive period on the basis of the macroscopic analysis of the ovaries and field observations. The Ovarian Size Factor (OSF) was calculated. The study was made in Departamento de Rivera, northern Uruguay. The advertisement call consists of short (177 ± 21ms), multipulsed (20 ± 3 pulses/note) notes, with a note repetition rate of 1.57 ± 0.13 notes/s. Physalaemus henselii has a female sexual cycle with unimodal distribution of gravid females, which are present from February to September. The OSF and the ratio "females with mature oocytes / females without mature oocytes" reached the highest values from April to June. The number and size of oocytes were positively correlated with female size. The smallest female (SVL =18.94mm, weight =0.78g) with mature oocytes was found in July. The observed sexual cycle with a single annual reproductive period during the cold season (autumn and early winter), is an uncommon fact for anuran species in the region.

          Translated abstract

          Physalaemus henselii (Peters, 1872) es un pequeño leiupérido que no ha sido estudiado desde los años 60. Aquí redescribimos su canto de anuncio, y determinamos su ciclo sexual femenino y el período reproductivo en base al análisis macroscópico de los ovarios y de observaciones de campo. Fue calculado el Factor de Tamaño Ovárico (FTO). El estudio fue realizado en el Departamento de Rivera, norte de Uruguay. El canto nupcial consiste en notas cortas (177 ± 21ms) y multipulsadas (20 ± 3 pulsos/nota), con una tasa de repetición de notas de 1.57 ± 0.13 notas/s. Physalaemus henselii tiene un ciclo sexual femenino con distribución unimodal de hembras maduras, las que están presentes de Febrero a Setiembre. El FTO y la tasa "hembras con ovocitos maduros / hembras sin ovocitos maduros" alcanzó los valores más altos desde Abril a Junio. El número y tamaño de los ovocitos estuvieron correlacionados positivamente con el tamaño de las hembras. La hembra más pequeña (SVL =18.94mm, masa =0.78g) con ovocitos maduros fue encontrada en Julio. El ciclo sexual observado, con un solo periodo reproductivo anual durante la estación fría (otoño e invierno temprano), constituye un hecho poco frecuente en las especies de anuros de la región.

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          Most cited references27

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          Amphibian Species of the World: an Online Reference

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            Amphibians of Argentina

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              Reproductive strategies in a tropical anuran community

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                isz
                Iheringia. Série Zoologia
                Iheringia, Sér. Zool.
                Fundação Zoobotânica do Rio Grande do Sul (Porto Alegre )
                1678-4766
                June 2008
                : 98
                : 2
                : 210-214
                Affiliations
                [1 ] Universidad de la República Uruguay
                [2 ] Pontifícia Universidade Católica do Rio Grande do Sul Brazil
                [3 ] Universidad de la República Uruguay
                [4 ] Universidad Católica del Uruguay Uruguay
                Article
                S0073-47212008000200007
                10.1590/S0073-47212008000200007
                11d77142-905d-46a6-bb95-55b5b4ec9c74

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0073-4721&lng=en
                Categories
                ZOOLOGY

                Animal science & Zoology
                Amphibia,Anura,Physalaemus,advertisement call,sexual cycle,canto de anuncio,ciclo sexual

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