Trophic ecology of two amphibian species in patches and core forest of Atlantic Forest: A dietary and isotopic approach

2021 ◽  
Author(s):  
Mateus Oliveira ◽  
Camila Fernanda Moser ◽  
Marluci Muller Rebelato ◽  
Plínio Barbosa Camargo ◽  
Alexandro Marques Tozetti
Keyword(s):  
Atlantic Forest ◽  
Trophic Ecology ◽  
Amphibian Species

scholarly journals Diet of tadpoles for five anuran species of northeast Brazil

2020 ◽  
Author(s):  
Airan dos Santos Protázio ◽  
Arielson dos Santos Protázio ◽  
Vivian Gama ◽  
Samantha Vieira Silva ◽  
Carla Giovanna Cruz dos Santos ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Aquatic Environment ◽  
Trophic Ecology ◽  
Northeast Brazil ◽  
Anuran Species ◽  
The Relationship ◽  
Forest Biome

In this study, the diet of tadpoles of five anuran species was described. The species were collected from either lotic or lentic environments in Caatinga and the Atlantic Forest biome of northeast Brazil. The diet of these tadpoles consisted of algae, protozoa, plants, fungi and animals. Diatoms were the most important items within the diet of Leptodactylus natalensis. Trachelomonas, diatoms, Phacus and Scenedesmus were the most important items comprising the diet of Leptodactylus cf. macrosternum. Trachelomonas, Oscillatoria and Scenedesmus were the most important items comprising the diet of Pithecophus nordestinus. Diatoms and Scenodesmus were the most important items of the diet for Rhinella jimi. For Scinax x-signatus, diatoms (Atlantic Forest population), Oscillatoria, undetermined filament and pollen (Caatinga population) were the most important items consumed. Scinax x-signatus and L. natalensis from Atlantic Forest, and L. cf. macrosternum and P. nordestinus from Caatinga had diets that were the most similar. The diversity of items found in the diets of species considered may be attributed to mechanisms used by tadpoles to obtain food, which favour the acquisition of suspended materials that are highly available in the environment. We discuss the possible effects of the relationship between algae and tadpoles and the importance of recording larvae diets to better understand the dynamics of the aquatic environment and the trophic ecology of tadpoles.

scholarly journals Expanding the knowledge about the occurrence of anurans in the highest amphibian diversity area of Atlantic Forest: Parque Estadual da Serra do Mar, São Paulo, Brazil

2017 ◽  
Vol 17 (2) ◽  
Author(s):  
Fernando Rodrigues da Silva ◽  
Mariana Lúcio Lyra ◽  
Célio Fernando Baptista Haddad ◽  
Denise de Cerqueira Rossa-Feres
Keyword(s):  
Protected Areas ◽  
Atlantic Forest ◽  
Forest Fragments ◽  
Amphibian Species ◽  
Future Studies ◽  
Serra Do Mar ◽  
The Past ◽  
Anuran Species ◽  
Human Use ◽  
Management And Conservation

Abstract The vegetation cover in the Atlantic Forest has been converted to human use or degraded by human activities, which declined the vegetation to 16% of its original extent. Although several protected areas have been created in this Neotropical biome over the past decades, our knowledge of the amphibian species within these areas is still far from adequate. Here, we present lists of anuran species from three different areas of Parque Estadual da Serra do Mar: núcleos Curucutu, Santa Virgínia and São Sebastião. To survey anuran species, we visited six sampling units (two ponds, two streams and two trails inside forest fragments) in each locality. Samplings were accomplished from December 2014 to February 2015, December 2015 to February 2016 and December 2016 to February 2017, totalizing 27 days of field samplings in each sampling unit. We recorded 34 anuran species in the Núcleo Curucutu, 44 species in the Núcleo São Sebastião and 42 species in the Núcleo Santa Virgínia, totalizing 65 species belonging to 12 families (number of species in parentheses): Bufonidae (5), Brachycephalidae (6), Centrolenidae (1), Craugastoridae (1), Cycloramphidae (2), Hemiphractidae (1), Hylidae (29), Hylodidae (3), Leptodactylidae (12), Microhylidae (2), Odontophrynidae (2), and Phyllomedusidae (1). We hope that these lists can be useful for future studies as well as helping in the management and conservation planning of these protected areas.

scholarly journals The herpetofauna of the Serra do Urubu mountain range: a key biodiversity area for conservation in the brazilian atlantic forest

2017 ◽  
Vol 57 (27) ◽  
pp. 347 ◽  
Author(s):  
Igor Joventino Roberto ◽  
Cícero Ricardo de Oliveira ◽  
João Antonio de Araújo Filho ◽  
Herivelto Faustino de Oliveira ◽  
Robson Waldemar Ávila
Keyword(s):  
Atlantic Forest ◽  
Threatened Species ◽  
Conservation Status ◽  
Mountain Range ◽  
Brazilian Atlantic Forest ◽  
Pitfall Traps ◽  
Museum Collections ◽  
Amphibian Species ◽  
High Importance ◽  
Lachesis Muta

The Serra do Urubu mountain range is considered a key biodiversity area. It is situated in the Pernambuco Endemism Center, one of the most threatened regions of the Brazilian Atlantic Forest. However, despite the high importance of this area little research on its herpetofauna has been performed. The present study presents an inventory of the herpetofauna of the region, through bibliographic review, searches in museum collections and field expeditions to the RPPNs Frei Caneca and Pedra D’Antas, in the municipalities of Jaqueira and Lagoa dos Gatos. The conservation status of the amphibians of the region is discussed. Five expeditions, between 2012 and 2013 were made. The methods employed were visual transect surveys, acoustic census and pitfall traps. We recorded a total of 46 amphibian species, belonging to nine families: Craugastoridae (3 spp.), Bufonidae (3 spp.), Ranidae (1 sp.), Hylidae (25 spp.), Leptodactylidae (8 spp.), Odontophrynidae (1 sp.), Hemiphractidae (2 spp.), Phyllomedusidae (2 spp.) and Microhylidae (1 sp.). We recorded 42 species of squamates: 16 species of lizards families Phyllodactylidae (1 sp.), Gekkonidae (1 sp.), Gymnophthalmidae (1 sp.), Polychrotidae (1 sp.), Leiosauridae (1 sp.), Tropiduridae (3 spp.), Dactyloidae (2 spp.), Diploglossidae (2 spp.), Teiidae (2 spp.), Scincidae (1 sp.), and Iguanidae (1 sp.); and 24 species of snakes: Boidae (3 spp.), Colubridae (2 spp.), Dipsadidae (13 spp.), Elapidae (2 spp.), Typhlopidae (1 sp.), and Viperidae (3 spp.). The occurrence of rare and/or threatened species such as the snakes Dipsas sazimai, Lachesis muta and Sibynomorphus sp. and the amphibians Hylomantis granulosa, Chiasmocleis alagoana, Boana freicanecae and Phyllodytes gyrinaethes reinforces the need for conservation measures at this highly threatened region of the Atlantic Forest.

scholarly journals Checklist of amphibians in a transitional area between the Caatinga and the Atlantic Forest, central-southern Bahia, Brazil

Check List ◽  
2013 ◽  
Vol 9 (4) ◽  
pp. 725 ◽  
Author(s):  
Amanda S. F. Lantyer Silva ◽  
Sérgio Siqueira Júnior ◽  
Juliana Zina
Keyword(s):  
Transition Zone ◽  
Atlantic Forest ◽  
Pitfall Traps ◽  
Community Structures ◽  
Amphibian Species ◽  
Transitional Area ◽  
Active Search ◽  
Reproductive Modes ◽  
Southern Bahia ◽  
Ecological Mechanisms

We present a list of amphibian species from Serra do Brejo Novo, municipality of Jequié, state of Bahia in Brazil, a transition zone between the Caatinga and the Atlantic Forest that encompasses a great diversity of species and reproductive modes. Between November 2009 and April 2010 we surveyed the area using pitfall traps and between August 2010 and February 2012 data was collected using active search methodology. We recorded 32 species belonging to seven families. The unexpected composition of species and reproductive modes of this community highlight the importance of species inventories and also the need for exploring transitional areas to understand the ecological mechanisms responsible for changes in community structures between different zones.

scholarly journals Amphibians of Serra das Torres Natural Monument: a reservoir of biodiversity in the Atlantic Forest of southeastern Brazil

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Jane C. F. Oliveira ◽  
Rafael dos Santos ◽  
Lorena P. Vasconcelos Barros ◽  
Mateus Leite ◽  
Bárbara Risse-Quaioto ◽  
...  
Keyword(s):  
Species Richness ◽  
Leaf Litter ◽  
Atlantic Forest ◽  
Southeastern Brazil ◽  
Sampling Effort ◽  
Amphibian Species ◽  
Espírito Santo ◽  
Forest Remnant ◽  
Natural Monument ◽  
Espirito Santo

Abstract The Brazilian Atlantic Forest holds a major part of the country’s amphibian species richness and high rates of endemism. In this study, we conducted surveys using the Rapid Assessment (RA) method to sample the amphibian fauna of the Serra das Torres Natural Monument (MONAST), an Atlantic Forest remnant in southeastern Brazil. We sampled actively with a 6-10-person team to collect standard samples from 09:00 to 12:00 hours for the daytime period, and from 18:00 to 22:00 hours for the crepuscular/nighttime period, with a total of approximately 1,320 hours of sampling effort. We supplemented these data with 720 hours of passive sampling, using pitfall traps with drift fences (30 bucket-days). We recorded 54 amphibian species (two gymnophionans and 52 anurans), and the species richness estimated by the Bootstrap method indicates that a slightly larger number of species (n = 60) may occur in the study area. The most speciose family was Hylidae (n = 21), followed by Brachycephalidae (n = 8). Overall, 25% of the species (n = 13) were recorded only once (singletons) and 15% (n = 8) only twice (doubletons). Most amphibians recorded in this study (71%, n = 37 species) were restricted to the Atlantic Forest biome, two species (Euparkerella robusta and Luetkenotyphlus fredi) are endemic to the Espírito Santo state, and one of them, the leaf litter species E. robusta, is endemic to the MONAST. Euparkerella robusta is currently listed as Vulnerable by the IUCN and is classified as Critically Endangered in the Espírito Santo State red list, while L. fredi has yet to be evaluated due to its recent description. Thoropa lutzi is currently listed as Endangered (EN) by both the IUCN and in the State list. Nine species are listed as Data Deficient (DD) and populations of 13 species are considered to be declining by the IUCN. We extend the geographical distribution of two anuran species (Hylodes babax and Phasmahyla lisbella) and fill an important gap in the distribution of Siphonops hardyi. Amphibians associated with the forest floor represented 42% of the species richness from MONAST, and 43% of these species inhabit the leaf litter exclusively. Our study revealed that Serra das Torres preserves a considerable diversity of Atlantic Forest amphibians, which reinforces the need for the conservation of this forest remnant.

Aliens in the backyard: Did the American bullfrog conquer the habitat of native frogs in the semi-deciduous Atlantic Forest?

2020 ◽  
pp. 93-98
Author(s):  
Lucas Ferrante
Keyword(s):  
Alien Species ◽  
Atlantic Forest ◽  
Native Species ◽  
Species Number ◽  
Forest Fragments ◽  
Population Declines ◽  
Stream Network ◽  
Amphibian Species ◽  
American Bullfrog ◽  
New Locations

The American bullfrog Lithobates catesbeianus has a natural distribution in North America, but was spread by human activities in different regions around the world. It is listed as the most invasive amphibian species, affecting terrestrial and aquatic ecosystems and the community of native species. In addition, the American bullfrog is extensively associated with lethal pathogens, with high correlation of the presence of this species with population declines and extinctions. Here we test if this alien species has spread through the landscape, establishing populations at new locations. We used diverse methods including georeferencing of satellite images, ethnobiological interviews and field data to evaluate the dispersion and effects of L. catesbeianus introduction on amphibian composition, species number, and density of individuals in forest fragments in an Atlantic Forest landscape. We did not find any relationship between density of individuals, number of species or composition of the native anuran assemblages in forest fragments in relation to the presence or proximity of American bullfrog introduction points. Additionally, we found that the dispersion potential of this species in the studied landscape is zero, as it was only found in those fragments where it was specifically introduced 15 years ago. The species has not established new populations in the landscape. Although exotic, L. catesbeianus thrives in lentic habitats and has no apparent effect on the structural metrics of the native anuran assemblage. Despite this alien species exhibiting a capacity to adapt and survive at the point of introduction, its potential for propagation is limited probably by the fragmented terrestrial landscape and regional stream network.

scholarly journals The Herpetofauna from Ilha Grande (Angra dos Reis, Rio de Janeiro, Brazil): updating species composition, richness, distribution and endemisms

2018 ◽  
Vol 58 ◽  
pp. 25 ◽  
Author(s):  
Carlos Frederico Duarte Rocha ◽  
Felipe Bottona da Silva Telles ◽  
Davor Vrcibradic ◽  
Paulo Nogueira-Costa
Keyword(s):  
Atlantic Forest ◽  
Rio De Janeiro ◽  
Secondary Data ◽  
Primary Data ◽  
Previous Knowledge ◽  
Southern Coast ◽  
Amphibian Species ◽  
Considerable Portion ◽  
Species Being ◽  
Occurrence Of Species

Ilha Grande is a large continental island (total area of 19,300 ha) situated at the southern coast of the state of Rio de Janeiro, in southeast Brazil, within the Atlantic Forest Biome. Here we provide an update to the previous knowledge of the fauna of amphibians and reptiles occurring in Ilha Grande, based on primary data from our own fieldwork and on secondary data (from institutional collections and from the literature). We report the occurrence at Ilha Grande of a total of 74 species, being 34 amphibians (all of them anurans) and 40 reptiles (27 snakes, 11 lizards, one amphisbaenian and one crocodylian). Our survey added 14 species to the herpetofaunal list of Ilha Grande (three of amphibians and eleven of reptiles) and removed one species (the amphibian Cycloramphus fuliginosus) from the previous list. The data indicated that Ilha Grande houses a considerable portion of the Atlantic Forest amphibian and reptile diversity (ca. 6% and 19%, respectively, of the species occurring in this biome) together with high occurrence of species endemic to this biome plus a few amphibian species endemic to this island. Ilha Grande is thus an important reservoir of both biodiversity and endemism of amphibians and reptiles of the Atlantic Forest of Brazil, which highlights the importance of the conservation of the island and of its different habitats along the insular landscape.

scholarly journals Trophic Ecology of Endangered Gold-Spotted Pond Frog in Ecological Wetland Park and Rice Paddy Habitats

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 967
Author(s):  
Hye-Ji Oh ◽  
Kwang-Hyeon Chang ◽  
Mei-Yan Jin ◽  
Jong-Mo Suh ◽  
Ju-Duk Yoon ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Feeding Behavior ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Habitat Type ◽  
Rice Paddy ◽  
Food Sources ◽  
Biological Interactions ◽  
Amphibian Species ◽  
Food Diversity

The gold-spotted pond frog (Pelophylax chosenicus) is an endangered amphibian species in South Korea. In order to obtain ecological information regarding the gold-spotted pond frog’s habitat environment and biological interactions, we applied stable isotope analysis to quantify the ecological niche space (ENS) of frogs including black-spotted pond frogs (P. nigromaculatus) and bullfrogs (Lithobates catesbeianus) within the food web of two different habitats—an ecological wetland park and a rice paddy. The gold-spotted pond frog population exhibited a broader ENS in the ecological wetland park than in the rice paddy. According to the carbon stable isotope ratios, gold-spotted pond frogs mainly fed on insects, regardless of habitat type. However, the results comparing the range of both carbon and nitrogen stable isotopes showed that gold-spotted pond frogs living in the rice paddy showed limited feeding behavior, while those living in the ecological wetland park fed on various food sources located in more varied trophic positions. Although the ENS of the gold-spotted pond frog was generally less likely to be overlapped by that of other frog species, it was predicted to overlap with a high probability of 87.3% in the ecological wetland park. Nevertheless, gold-spotted pond frogs in the ecological wetland park were not significantly affected by the prey competition with competitive species by feeding on other prey for which other species’ preference was low. Since these results show that a habitats’ food diversity has an effect on securing the ENS of gold-spotted pond frogs and prey competition, we recommend that the establishment of a food environment that considers the feeding behavior of gold-spotted pond frogs is important for the sustainable preservation of gold-spotted pond frogs and their settlement in alternative habitats.

scholarly journals Fins are relevant non-lethal surrogates for muscle to measure stable isotopes in amphibians

2019 ◽  
pp. 2
Author(s):  
Nadège Bélouard ◽  
Eric J. Petit ◽  
Dominique Huteau ◽  
Adrien Oger ◽  
Jean-Marc Paillisson
Keyword(s):  
Trophic Ecology ◽  
Isotope Ratios ◽  
Ecological Processes ◽  
Amphibian Species ◽  
Carbon And Nitrogen ◽  
Topical Anaesthetics ◽  
Highly Correlated ◽  
Non Destructive ◽  
Isotope Analyses ◽  
Taxonomic Order

Stable isotope analyses (SIA) are now widely used in ecology research to quantify the trophic implications of a large range of ecological processes. Non-destructive sampling methods have been successfully developed for most vertebrates, but the validation of such methods is missing in amphibians. Filling this methodological gap is critical to reduce the significant lack of knowledge on the trophic ecology of this imperilled group. The relevance of tail fin as a surrogate for muscle, a tissue routinely used for SIA, was assessed in four amphibian species, including tadpoles and adult newts, by (1) testing the link between the isotope ratios of carbon and nitrogen in fin and muscle, and addressing the additional practical issues of (2) the effects of a topical anaesthetic on isotope ratios, and (3) the minimum quantities of fin needed for SIA to limit the severity of sampling. The isotope ratios were highly correlated between the two tissues in all four species. Equations were provided to predict muscle estimates from fin values for each species separately and grouped by their taxonomic order (anurans or urodeles), which represent a valuable solution for any other species. Topical anaesthetics had little influence on isotope ratios, and the surface of tail fin needed for SIA was small. We conclude that the tail fin of amphibians can be used as a non-lethal surrogate for muscle in SIA, and this offers promising prospects for research on the trophic ecology of amphibians, and potentially on their conservation.

Multiscale endemism analysis for amphibians of Paraguay

2020 ◽  
pp. 35-46
Author(s):  
Hugo Cabral
Keyword(s):  
Cluster Analysis ◽  
South America ◽  
Atlantic Forest ◽  
Distribution Patterns ◽  
Point Of View ◽  
Amphibian Species ◽  
Areas Of Endemism ◽  
And Cluster Analysis ◽  
Taxonomic Groups ◽  
Indices Of Similarity

Although there are many studies that analyse and describe the distribution patterns of diverse organisms in South America at different scales, Paraguay has been poorly assessed from a biogeographic point of view. Some of the available contributions on the biogeography of Paraguay are based on different taxonomic groups, such as mammals, birds, reptiles, and plants, describing relationships between species and their habitats by using indices of similarity and cluster analysis. The main objective of this contribution is to identify areas of endemism based on the distribution of the 87 amphibian species known from Paraguay, and to compare the results with the three schemes of ecoregion proposed for the country. Eight areas of endemism were identified at different size of grids/scales, congruent with Dry Chaco, Atlantic Forest, Cerrado, Grasslands of Mesopotamia, Ñeembucú, and the Great American Chaco ecoregions.

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