Marta I. Duré

Centro de Ecología Aplicada del Litoral (CECOAL)- CONICET · Herpetología-Ecología

Cosmocercids are common nematodes that parasitize the digestive tract and lungs of amphibians and reptiles around the world. They are commonly found in leptodactylid and bufonid anurans in South America, primarily in Brazil and Argentina. This paper describes a new species of genus Cosmocerca based on specimens collected in a microhylid from the Dr...

The present study predicts that helminth community diversity and parasite transmission are influenced by host behavior and its habitat. This prediction was tested by analyzing for the first time the helminth community of Lepidobatrachus llanensis, an aquatic species that inhabits exclusively ephemeral water bodies in the Dry Chaco ecoregion. In the...

RESUMEN En la Región Oriental del Paraguay se encuentran los humedales del Complejo Ypoá, declarados como sitio RAMSAR y categorizados como Reserva de Recursos Manejados. Pese a estas categorías de protección, su biodiversidad ha sido escasamente estudiada. El objetivo de este trabajo fue determinar la riqueza, composición y abundancia de anuros y...

Studies on the exploitation of trophic resources allow to establish interactions between predators and predator-prey, and this dynamic can present fluctuations over time and space. We analysed stomach contents of 19 anuran species from tropical dry forests of Colombia, quantified the overlap between species and identified anuran trophic guilds. Mos...

Melanophryniscus paraguayensis (no common name) is an endemic toad of the central grasslands in the eastern region of Paraguay. Details about its natural history are poorly understood and it is categorized nationally as Vulnerable. This work describes the diet composition of this species and the relationship between toad body size and the number an...

This is the first review of the nematode parasites of amphibians from Dry Chaco (DC) and Humid Chaco (HC) ecoregions of South America, covering aspects related to their systematics, distribution, host range and ecology, including their life cycles. Of approximately 100 species of amphibians that inhabit these ecoregions, the nematode parasites of 3...

In the Argentinean Gran Chaco, numerous investigations have dealt with the diversity of vertebrates , including amphibians and reptiles. The parasitofauna of these organisms, has been more studied in some groups such as amphibians; however, from a biogeographic perspective, most of these studies were carried out in the Humid Chaco. The goal of this...

Species of Bufonidae and Leptodactylidae are common in the Colombian tropical dry forest. Although some of them are associated with active foraging and consumption of termites and ants, their trophic ecology is mostly unknown. The diet of five anuran species of Bufonidae (Rhinella horribilis, R. humboldti) and the leptodactylid subfamily Leiuperina...

Anuran–prey selection might be mediated by traits, either by mismatches in predator and prey traits (preventing interactions) or by predator selection of prey traits (encouraging interactions). These effect traits could be summarized in two contrasting foraging strategies: “active” and “sit‐and‐wait” foragers. We evaluated whether anurans could be...

The present study describes the helminth community collected from juveniles of Dermatonotus muelleri (Anura: Microhylidae) from the Chaco Seco Ecoregion. Helminths were found in 80.0% of specimens examined (n = 16). The helminth community of this microhylid presented very low species richness; a total of 1,339 specimens belonging four helminth spec...

This is the first record of the nematode parasite Kalicephalus subulatus (Strongylida, Diaphanoce - phalidae) in Wagler’s snakes, Xenodon merremi (Squamata, Colubridae), collected in Corrientes, Argentina. The species was observed using light and scanning electron microscope (SEM) and compared to previous studies from Tropical America. As for the m...

Here we describe a new species of sarcophagid fly reared from larvae found feeding on three species of leptodactylid frogs collected in subtropical Corrientes Province in northeastern Argentina. Our species description is based on adult male and female external morphology and genitalia. Adult males and females of the new species were associated wit...

Abstract. We describe the diet of two syntopic Scinax species, S. rostratus and S. ruber, from northern lowlands of Colombia. These frogs do not seem to exhibit a marked preference for the consumption of a particular type of prey. However, in their diets, orthopterans were a well-represented category. Scinax ruber showed a positive and significant...

The diet of 2 species of Elachistocleis in the lowlands of Northern Colombia is described. Due to the characteristics of their diet (composition, volume, average number of prey per stomach, and the records of another related species) E. pearsei and E. panamensis are active foragers, and termite-and ant-eating specialists.

We characterize the diet of Craugastor raniformis, a terrestrial frog that inhabits the tropical dry forest in Colombia. The diet is constituted mostly of orthopterans, millipedes, arachnids and ants. Considering the morphological characteristics of this species, diet composition, gut vacuity index, trophic niche breadth and diversity, we consider...

We describe the vocal repertoire of Melanophryniscus cupreuscapularis, a bufonid toad of the Melanophryniscus stelzneri species group, which has been recently listed as “Vulnerable” by the Asociación Herpetológica Argentina. Recordings were obtained in “Paraje El Perichón,” a relict of Schinopsis balansae “quebracho” forest near Corrientes City, Ar...

The ability of an organism to produce different phenotypes under different environmental conditions is a common adaptation in nature. Biotic factors like competition, community structure and predation can influence the survival and time to metamorphosis in amphibians. However, abiotic factors such as the hydroperiod and light intensity can be as im...

In environments with thermal and pluvial seasonality such as those of the Middle Paraná River floodplain (Province of Santa Fe, Argentina), most amphibian species reproduce during the warm season and drastically diminish their activity during winter. Even though, a few species remain active during the cold season, such as Hypsiboas pulchellus that...

A más de una década de la primera Lista Roja de herpetofauna propuesta por la Asociación Herpetológica Argentina (Lavilla et al., 2000), se recategorizaron los anfibios a partir de nueva información taxonómica, biogeográfica, bio-ecológica y de modificaciones metodológicas respecto a la evaluación anterior. Mediante la participación de 35 especiali...

Entre el 4 de marzo y el 25 de abril de 2011, en 6 sistemas de trampas instalados en la Provinciade Formosa, Ciudad de Las Lomitas, Departamento Patiño, Ruta Nacional N° 81, Establecimiento Sumayen 2000 (24°39'49,4" S; 60°38'29,9" O; 137 m.s.n.m.; datum WGS84), fueron colectados 32 microhílidos con vientre gris manchado de blanco, y características...

Revisamos el método utilizado para determinar especies amenazadas en la Argentina, con los objetivos de: (1) que pueda ser empleado consistentemente por diferentes personas reduciendo la subjetividad, (2) brindar una guía sobre cómo evaluar los factores que conducen al riesgo de extinción, (3) proporcionar a los usuarios de listas rojas una mejor c...

We studied the trophic ecology of Dendrobates auratus and Oophaga pumilio in La Selva Biological Station, Costa Rica. At this site, both dendrobatids are sympatric due to the introduction and naturalization of D. auratus in the last 24 years. Diets of both dendrobatids were recorded by the analysed stomach flushing technique. Microhabitats uses wer...

The present study describes the reproductive biology of Argenteohyla siemersi pederseni in a modified “quebracho” forest of Schinopsis balansae in northeastern Argentina. Observations were made between January 2007 and March 2009 at El Perichón, Corrientes Province, Argentina. Argenteohyla s. pederseni bred once per year over a 3-day period in a se...

The niche overlap and resource partitioning were analyzed for five sympatric bufonids from Northeastern Argentina: Rhinella schneideri, R. bergi, R. fernandezae, R. granulosa, and Melanophryniscus cupreuscapularis. The primary objectives were to analyze the diet and pattern of coexistence relative to the microhabitats among species. The bufonids, w...

Desde febrero de 2002 a diciembre de 2004, se analizó la fauna de helmintos parásitos y las características reproductivas de Scinax nasicus en un área cercana a la ciudad de Corrientes, Argentina. La fauna de parásitos helmintos estuvo conformada por 15 especies de helmintos (larvas y adultos) incluyendo trematodes (73%), nematodes (20%) y acantocé...

The anuran biodiversity and richness of a frog community inhabiting rice fields in northeastern Argentina was surveyed and analyzed. The samples were taken between October 2001 and June 2003. Twenty six species of amphibians were identified in five micmhabitats: rice fields per se, ditches and paths, natural vegetation, aquatic vegetation and gulli...

We studied the trophic and reproductive ecology and document the helminth fauna of the Cei's white-lipped frog, Leptodactylus chaquensis, from north-eastern Argentina. This frog is a generalist predator, using an intermediate strategy between active foraging and sit and wait predation. The diet consisted of 17 types of prey and was dominated numeri...

Ecological aspects of diet, reproduction, and parasitism of Pseudopaludicola bo- liviana (Anura, Leptodactylidae) from Corrientes, Argentina. The main objectives of this paper were to update the distribution range of Pseudopaludicola boliviana in Argentina, to determine its diet composition and the feeding patterns, to analyze some reproductive var...

The main objectives of this paper were to update the distribution range of Pseudopaludicola boliviana in Argentina, to determine its diet composition and the feeding patterns, to analyze some reproductive variables as mature ova count and diameter in relation to female snoutvent length, to describe the advertisement call for Argentinean populations...

We analyzed trophic ecology and its relationship with environmental variables for two leptodactylid species, Leptodactylus latinasus and L. bufonius (Anura: Leptodactylidae). The two species are common around Corrientes City, Argentina, where they live in the same habitat. The main objectives were to analyze the diets and patterns of coexistence re...

We describe the tadpole of Physalaemus albonotatus (Anura, Leptodactylidae), from specimens collected from northeastern Argentina. The distinguishing characteristics (Stage 36) are (1) labial tooth row formula: 2(2)/3(1); (2) rostral gap about 2.5 times greater than mental gap; (3) body length of 10.00 mm and total length of 24.20 mm; and (4) body...

During the breeding time period it is frequent to observe males of Physalaemus albonotatus aggregated for calling. In several opportunities was observed aggressive contact between males preceeded by a different can than nuptial vocalization. In this paper we describe the encounter can of P. albonotatus from a population from Corrientes province, Ar...

RESUMEN. Se analizó comparativamente la dieta de dos especies sintópicas de hílidos: Seinax nasiea (n=56) y Seinax aeuminaw (n=42), en la provincia de Con•ientes. Argentina. Los muestreos se realizaron en una zona ubicada aproximadamente a 15 km. al este dc la ciudad de Corrientes (27" 30' S, 58° 45' O) desde febrero de 1996 a mayo de ]997. De los...

INTRODUCCIÓN La ecología trófica reviste gran importancia a la hora de determinar los patrones que rigen en la estructura de las comunidades de anuros. La forma en que las mismas explotan y dividen sus recursos nos permitirá comprender su distribución, abundancia y diversidad específica (Toft, 1985). En el presente estudio se analiza y compara la c...