Conference Paper

Check-list of Amphibians in two areas of the Amazonian rainforest near Iquitos (Peru) with different anthropic impact

January 2013

Conference: IX Congresso Nazionale della Societas Herpetologica Italica (Bari - Conversano, 26-30 settembre 2012). Pineta, Conversano (BA)
At: Bari - Conversano, 26-30 settembre 2012
Volume: Atti IX Congresso Nazionale della Societas Herpetologica Italica (Bari - Conversano, 26-30 settembre 2012). Pineta, Conversano (BA)

Authors:

Valerio Giovanni Russo

Kayla Nature

Nicola Maio

University of Naples Federico II

Fabio Maria Guarino

University of Naples Federico II

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ResearchGate has not been able to resolve any references for this publication.

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Diego F. Cisneros-Heredia

ELEUTHERODACTYLUS MALKINI (NCN). ECUADOR: PROVINCIA DE SUCUMBIOS: 5 km from “El Triunfo” [a town on the km 68 on the Lago Agrio - Puerto El Carmen road] (00º03’S, 76º24’W, 270 m). 16 July 2000. D. F. Cisneros-Heredia, M. Brandt, A. León, T. Suhagara, and C. Ponce. Universidad San Francisco de Quito, Ecuador (DFCH-USFQ 373-75). Verified by L. Coloma. Eleutherodactylus malkini occurs along the low ... [Show full abstract] elevation rainforests in the upper Amazon Basin in extreme southeastern Colombia (Leticia), Ecuador, Peru, and Brazil (Lynch 1980. Am. Mus. Novit. 2696; Frost 2004. Amphibian Species of the World. Ver. 3.0 [22 August, 2004]. http://research.amnh.org/herpetology/amphibia/index.html. American Museum of Natural History, New York). This record represents the northernmost locality in the distribution of the species, extending its range ca. 60 km N from the nearest locality at the Tiputini Biodioversity Station (Cisneros-Heredia 2003. Herpetofauna de la Estación de Biodiversidad Tiputini, Amazonía Ecuatoriana. In De la Torre and Reck [eds], Ecología y Ambiente en el Ecuador, pp. 1–21. Mem. I Congreso de Ecología y Ambiente, Ecuador país megadiverso. CD. Universidad San Francisco de Quito).

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A new species of frog of the Eleutherodactylus lacrimosus assemblage (Leptodactylidae) from the west...

June 2006 · Herpetologica

We describe a new species of Eleutherodactylus from the lowlands of the western Amazon Basin. The new species is referred to the Eleutherodactylus unistrigatus group, lacrimosus assemblage. It differs from other members of the group by having a dorsal olive-green coloration with an interorbital creamy yellow stripe that extends posterolaterally and reaches the level of the sacrum, and low ulnar ... [Show full abstract] and tarsal tubercles. The new species inhabits western Amazon tropical rainforests and has been found in arboreal bromeliads by day and on vegetation by night. We discuss the effect of lack of sampling in the forest canopy in our understanding of tropical amphibian communities. Based on work conducted at two localities in Ecuadorian Amazonia, we find that even limited sampling effort in the canopy can greatly improve efficiency of biological inventories.

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Microhabitat Temperatures and Prevalence of the Pathogenic Fungus Batrachochytrium dendrobatidis in...

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Until recently, it was assumed that the pathogenic fungus Batrachochytrium dendrobatidis (Bd) was not widely distributed in warm ecosystems such as lowland tropical rainforests because high environmental temperatures limit its growth. However, several studies have documented Bd infection in lowland rainforest amphibians over the past decade. In addition, a recent study focusing on museum-stored ... [Show full abstract] specimens showed that Bd has been present in the lowland Amazon for more than 80 years. These findings lent support to the idea that some lowland rainforest habitats offer suitable environmental conditions for Bd growth, even though most lowland areas may contain suboptimal conditions limiting the pathogen spread and growth. Here, we surveyed four sites in southeast Peru to examine the prevalence and the intensity of infection of Bd in lowland Amazonian amphibians and to fill a gap between two areas where Bd has been present for more than a decade. In one of these “hotspots” of Bd infection, the upper slopes of Manu National Park, several species experienced population declines attributed to Bd epizootics over the past 15 years. We also examined the thermal profile of the main microhabitats used by lowland Amazonian frogs to infer whether these microhabitats offer suitable thermal conditions for Bd growth. We detected Bd in nine lowland frog species and variation in prevalence of infection across years. Our findings suggest that the temperatures in the leaf litter and understory vegetation of some habitats offer suitable conditions for Bd growth.

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Camera trapping reveals a diverse and unique high-elevation mammal community under threat

April 2019 · Oryx

The Cerros del Sira in Peru is known to hold a diverse composition of endemic birds, amphibians and plants as a result of its geographical isolation, yet its mammalian community remains poorly known. There is increasing awareness of the threats to high-elevation species but studying them is often hindered by rugged terrain. We present the first camera-trap study of the mammal community of the ... [Show full abstract] Cerros del Sira. We used 45 camera traps placed at regular elevational intervals over 800–1,920 m, detecting 34 medium-sized and large mammal species. Eight are listed as threatened on the IUCN Red List, three are categorized as Data Deficient and one is yet to be assessed. Although other authors have reported that the upper elevations of the Cerros del Sira are free from hunting, we found evidence of hunting activity occurring above 1,400 m, and inside the core protected area. In addition to this direct evidence of hunting, recent information has identified significant amounts of canopy loss in the northern reaches of the core zone. Despite widespread ecological degradation in the surrounding lowlands, the high-elevation areas of the Cerros del Sira still maintain a unique assemblage of lowland and highland tropical rainforest mammals. It has been assumed that the Cerros del Sira and other similar remote locations are safe from disturbance and protected by their isolation but we suggest this is an increasingly dangerous assumption to make, and secure protection strategies need to be developed.

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Temporal Fluctuations in Abundances of Anuran Amphibians in a Seasonal Amazonian Rainforest

March 1995 · Journal of herpetology

William E. Duellman

Anuran amphibians were sampled over a period of 6 yr at a site in seasonal lowland tropical rainforest in southern Amazonian Peru. Three sampling periods were at the beginning of the rainy seasons in 1986, 1989, and 1991; two were in the middle of the rainy seasons of 1986 and 1990, and one was in the dry season of 1989. Temperature and rainfall were recorded throughout all sampling periods. ... [Show full abstract] Sampling was done along a system of trails and in four series of quadrats. A total of 5236 individuals of 61 species of anurans was recorded during the sampling period. Analysis of the data on the 20 most abundant species reveals that anuran activity is closely correlated with the occurrence of peaks of heavy rainfall and not total rainfall during a sampling period. There is no compelling evidence for declines in anuran populations at this site. /// -- Se muestrearon los anfibios anuros en un sitio en el bosque lluvioso tropical estacional de tierras bajas en el sur del Perú amazónico a lo largo de un período de 6 años. Tres períodos de muestreo fueron en los comienzos de las estaciones de lluvia en 1986, 1989, y 1991; dos a mediados de las estaciones de lluvia en 1986 y 1990, y uno en la estación seca en 1989. Se registraron la temperatura y cantidad de lluvia a lo largo de todos los períodos de muestreo. El muestreo se realizó a lo largo de un sistema de trochas y en cuatro series de cuadrantes. Se registró un total de 5236 individuos de 61 especies de anuros durante el período de muestreado. El análisis de los datos de las 20 especies más abundantes revela que la actividad de los anuros está estrechamente correlacionada con la occurrencia de máximos de lluvia torrencial y no con la cantidad de lluvia durante un período de muestreo. No existe evidencia convincente de descensos en las poblaciones de anuros en este sitio.

Amphibian community structure as a function of forest type in Amazonian Peru

September 2010 · Journal of Tropical Ecology

The potential effect of forest type on the structuring of animal communities in western Amazonia remains poorly understood. In this study, we tested the hypothesis that amphibian species richness, composition and abundance differ across forest types in the lowland rain forest of south-eastern Peru. By using 320 individual transects, we compared the amphibian assemblages across four major forest ... [Show full abstract] types (floodplain, terra firme, bamboo and palm swamp) at each of four sites separated by 3.5-105 km. We identified 1967 individuals of 65 species in 11 families and found that a large proportion of the amphibian diversity in this region is attributed to habitat-related beta diversity. Overall, we found that forest type is more important than site in predicting both species composition and abundance. We also found that, when analyses are conducted separately for each forest type and include species abundance data, similarity between assemblages decreases with increasing geographic distance. In contrast to studies that considered species presence/absence but ignored species abundances, our results highlight the importance of including abundance data in the assessment of animal diversity patterns in western Amazonia. We conclude that evaluating community structure across forest types can improve our understanding of diversity patterns in this region.

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Check-list of Amphibians in two areas of the Amazonian rainforest near Iquitos (Peru) with different anthropic impact

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