Is the red spotted green frog Hypsiboas punctatus (Anura: Hylidae) selecting its preys? The importance of prey availability

López, Javier Alejandro; Scarabotti, Pablo Augusto; Medrano, María Celeste; Ghirardi, Romina

doi:10.15517/rbt.v57i3.5497

Cited by 22 publications

(15 citation statements)

References 37 publications

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“…These differences could be related to prey availability in the environment. The irregular conditions of the studied areas certainly influence the composition of invertebrates, changing prey availability in each habitat and leading to differences in anuran diets (López et al, 2009). However, none of the compared species showed prey availability in the environment, which made comparison among species difficult, since we could not draw conclusions about how species select these prey or whether they only feed on what is available in the environment.…”

Section: Discussionmentioning

confidence: 99%

“…Understanding the diets of anurans is paramount to unveil their natural history and ecological impacts in both terrestrial and aquatic environments as amphibians help control the populations of many organisms and represent a link between terrestrial and aquatic environments (Toft, 1980(Toft, , 1981Duellman and Trueb, 1986;López et al, 2009). Despite great efforts to analyse the diets of anuran species, few approaches have considered prey availability in environments (Sabagh and Carvalho-e-Silva, 2008;Caldart et al, 2012;Araujo-Vieira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Despite great efforts to analyse the diets of anuran species, few approaches have considered prey availability in environments (Sabagh and Carvalho-e-Silva, 2008;Caldart et al, 2012;Araujo-Vieira et al, 2018). Some studies have already shown that prey availability can change seasonally, and these changes should be considered as a determinant factor for anuran diets (Cogălniceanu et al, 2001) as prey availability is intrinsically related to the trophic ecology of anurans (Kikuchi and Ueida, 1998;Ott and Carvalho, 2001;López et al, 2009). Amphibians are considered opportunistic and generalist predators (Vaz-Silva et al, 2005;Toledo et al, 2007;Neves et al, 2014), but some families (e.g., Microhylidae and Dendrobatidae) have specialized diets, feeding mostly on ants (Hymenoptera: Formicidae) and termites (Isoptera) (Attademo et al, 2007;Berazategui et al, 2007;Santana and Juncá, 2007;Forti et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Michelin

Ceron

Santana

2020

Anim. Biodiv. Conserv.

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Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil. Prey availability in an environment may change seasonally and these changes should be considered as determinant factors for the diets of anurans. Scinax species are generalist predators that feed on arthropods, but data concerning their diet in relation to prey availability are lacking. In this study, we describe the diet of Scinax fuscomarginatus by evaluating its possibly generalist diet related to prey availability in its environment. We studied the diet of Scinax fuscomarginatus by analysing the stomach contents of 48 individuals captured in the Campo Grande municipality, Mato Grosso do Sul state, Brazil. We found eight prey categories, the most common and most representative being Hemiptera. The selectivity index of the two most important prey varied inversely between dry and wet seasons. Prey availability also varied between seasons. These results suggest a temporal pattern in prey composition and in the diet of Scinax fuscomarginatus. ResumenLa disponibilidad de presas influye en la dieta de Scinax fuscomarginatus en una zona de Cerrado, en el centro de Brasil. La disponibilidad de presas en un entorno puede cambiar según la temporada y este cambio debe considerarse un factor determinante para las dietas de los anuros. Las especies de Scinax son depredadores generalistas que se alimentan de artrópodos; sin embargo, no hay datos sobre su dieta en relación con la disponibilidad de presas. En este estudio, describimos la dieta de Scinax fuscomarginatus mediante la evaluación de su posible dieta generalista con respectoa la disponibilidad de presas en su entorno. Estudiamos la dieta de Scinax fuscomarginatus mediante el análisis del contenido estomacal de 48 ejemplares capturados en el municipio de Campo Grande del estado de Mato Grosso do Sul, en Brasil. Encontramos ocho categorías de presas, de las cuales Hemiptera fue la más abundante y representativa. El índice de selectividad de las dos presas más importantes varió inversamente entre las estaciones seca y lluviosa. La disponibilidad de presas también varió entre las estaciones. Estos resultados sugieren la existencia de una pauta temporal en la composición de las presas y en la dieta de Scinax fuscomarginatus.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Michelin

Ceron

Santana

2020

Anim. Biodiv. Conserv.

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“…Most amphibians are generalist predators and feed on invertebrates (Rodrigues et al 2004, Solé et al 2009, López et al 2009), but some groups (e.g. Dendrobatidae) are specialized in certain type of prey (Biavati et al 2004, Wells 2007).…”

Section: Introductionmentioning

confidence: 99%

Diet of Leptodactylus fuscus (Amphibia: Anura: Leptodactylidae) in the Pantanal of Miranda river, Brazil

Sugai¹,

Terra²,

Ferreira

2012

Biota Neotrop.

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Amphibians are usually generalist predators, and their diet is influenced by extrinsic (e.g. food availability) and intrinsic factors (e.g. body size and skull shape). This study aims to describe the diet of adult males and females of Leptodactylus fuscus in the Pantanal of the Miranda river and to answer the following questions: i) Are prey's maximum size and number of food items explained by the anuran's body size? ii) Are richness of morphospecies and number of food items explained by frog sex? iii) Is there diet overlap between male and female? We recorded 62 food items, belonging to seven orders of Arthropoda, and one individual of Annelida. The diet of L. fuscus was dominated by Orthoptera, followed by Coleoptera, Araneae, Hymenoptera, Blattaria, Hemiptera and Diptera. Frog's body size did not influence prey size or number of food items consumed. The number of prey and richness of morphospecies did not differ between males and females. There was low diet overlap between the sexes. Our results provide evidence for the opportunistic and generalist feeding behavior of L. fuscus. Resumo: Anfíbios são, em geral, predadores generalistas cuja dieta é influenciada por fatores extrínsecos (e.g. disponibilidade de alimento) e intrínsecos (e.g. tamanho do corpo e formato do crânio). Este estudo tem como objetivo descrever a dieta de machos e fêmeas adultos de Leptodactylus fuscus no Pantanal do rio Miranda e responder as seguintes perguntas: i) O tamanho máximo da presa e o número de itens alimentares são explicados pelo tamanho corpóreo do anuro? ii) A riqueza de morfoespécies e número de itens alimentares são explicados pelo sexo do anuro? iii) Existe sobreposição de dieta entre macho e fêmea? Registramos 62 itens alimentares distribuídos por sete ordens de Arthropoda e um indivíduo de Annelida. A dieta de L. fuscus possui dominância de Orthoptera, seguida por Coleoptera, Araneae, Hymenoptera, Blattaria, Hemiptera e Diptera. O tamanho corpóreo do anuro não influenciou o tamanho da presa ou o número de itens alimentares consumidos. O número de presas e riqueza de morfotipos não diferiu entre machos e fêmeas. Houve baixa sobreposição alimentar entre os sexos. Os resultados mostram evidências de comportamento alimentar oportunístico e generalista para L. fuscus. Palavras-chave: planície pantaneira, itens alimentares, ecologia trófica.

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“…Basso 1990, Peltzer & Lajmanovich 2000, Duré & Kehr 2004, López et al 2007, 2009) y solo algunos pocos han tenido en cuenta la estación fría (Maneyro & da Rosa 2004, Guimarães et al 2011. Esta situación ha derivado en escasa información sobre lo que ocurre con la alimentación de aquellas especies activas durante la estación fría o las estrategias de utilización de reservas lipídicas como fuente de energía durante el periodo de bajas temperaturas.…”

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Alimentación de dos especies de anfibios (Anura: Hylidae) en la estación de bajas temperaturas y su relación con la acumulación de energía en Santa Fe, Argentina

Antoniazzi

López

Duré

et al. 2013

RBT

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Is the red spotted green frog Hypsiboas punctatus (Anura: Hylidae) selecting its preys? The importance of prey availability

Cited by 22 publications

References 37 publications

Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Prey availability influences the diet of Scinax fuscomarginatus in a Cerrado area, Central Brazil

Diet of Leptodactylus fuscus (Amphibia: Anura: Leptodactylidae) in the Pantanal of Miranda river, Brazil

Alimentación de dos especies de anfibios (Anura: Hylidae) en la estación de bajas temperaturas y su relación con la acumulación de energía en Santa Fe, Argentina

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