Lucas B Crivellari | Universidade Estadual Paulista "Júlio de Mesquita Filho" (original) (raw)

Papers by Lucas B Crivellari

Research paper thumbnail of Influência relativa de parâmetros ambientais e espaciais na diversidade de anuros (Amphibia: Anura) dos Campos Gerais, Paraná, Brasil

Research paper thumbnail of Scinax rossaferesae Conte, Araujo-Vieira, Crivellari & Berneck, 2016, sp. nov

<i>Scinax rossaferesae</i> sp. nov. (Figs. 1–3) <i>Scinax</i> sp. gr. &lt... more <i>Scinax rossaferesae</i> sp. nov. (Figs. 1–3) <i>Scinax</i> sp. gr. <i>ruber</i> — Crivellari <i>et al.</i> (2012), Crivellari <i>et al.</i> (2014: fig. 6G), Guerra &amp; Bastos (2014: fig. 25). <b>Holotype.</b> CFBH 21027, adult male, from Parque Estadual do Cerrado (24°14'47.16" S; 49°45'7.39" W), municipality of Jaguariaíva, state of Paraná, Brazil, collected on October 21, 2008 by B.V.M. Berneck, R. Recoder, M.V. Segalla, and P.H. Valdujo. <b>Paratypes.</b> Eleven adults collected in two localities in the state of Paraná, Brazil. All are males unless otherwise stated: MZUSP 157140–157142, MHNCI 9226–9228 from Parque Estadual Guartelá (24°37'49.54" S; 50°17'30.61" W), municipality of Tibagi, state of Paraná, Brazil, collected on March 30, 2011 and September 29, 2013. MHNCI 9841, 9843–9844, CFBH 39390 (female), 39391 from Parque Estadual Vila Velha (24°14'02'' S; 49°59'28'' W), municipality of Ponta Grossa, state of Paraná, Brazil, collected on March 30, 2011 and October 10, 2011. <b>Diagnosis</b>. The new species is diagnosed by the following set of characters: 1) SVL 27.8–31.6 mm in males; 2) subovoid snout in dorsal view and slightly acuminate in profile; 3) head slightly longer than wide (HL\HW=1.1– 1.2); 4) small-sized tympanum (1.2–1.44 mm); 5) single, median, subgular vocal sac that does not reach the pectoral region; 6) pointed tubercles absent on the lower jaw; 7) tibia length/snout-vent length = 0.50–0.53; 8) conspicuous pointed tubercle absent on the heel; 9) webbing on the feet always reaching the base of penultimate phalanx between toes II and V, and not surpassing, anteriorly, the proximal half of antepenultimate phalanx in Toe IV; 10) dorsum with a pale yellow, light to dark gray from dark brown, or black background, with round, irregular, and elongate darker blotches; 11) dorsal surface of the shanks with irregular and transversal darker markings; 12) posterior hidden surfaces of thighs light brown, light to dark gray, or black, with lighter, large and irregular blotches (yolk yellow in living [...]

Research paper thumbnail of Figure 9. A In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 9. A: Dorsal color pattern of Scinax rossaferesae sp. nov. in life (unvouchered specimen).... more FIGURE 9. A: Dorsal color pattern of Scinax rossaferesae sp. nov. in life (unvouchered specimen). B, C, and D: Habitats of S. rossaferesae sp. nov.

Research paper thumbnail of Figure 4 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 4. Scinax rossaferesae sp. nov. in life, male paratype (MHNCI 9843; SVL 28.7). A: Head in ... more FIGURE 4. Scinax rossaferesae sp. nov. in life, male paratype (MHNCI 9843; SVL 28.7). A: Head in lateral view. B: Body in dorsal view. C: Right hand in ventral view. D: Right foot in ventral view. Scales bars = 5 mm (upper) and 2 mm (lower).

Research paper thumbnail of Figure 8 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 8. Geographic distribution of Scinax rossaferesae sp. nov. in the Southern Brazilian Plate... more FIGURE 8. Geographic distribution of Scinax rossaferesae sp. nov. in the Southern Brazilian Plateau, showing its typelocality (red circle) and referred records (blue circles).

Research paper thumbnail of Figure 1 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 1. Scinax rossaferesae sp. nov. holotype (CFBH 21027; SVL 27.8). A: Dorsal view. B: Ventra... more FIGURE 1. Scinax rossaferesae sp. nov. holotype (CFBH 21027; SVL 27.8). A: Dorsal view. B: Ventral view.

Research paper thumbnail of Figure 6. A In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 6. A: Dorsal color pattern of Scinax haddadorum sp. nov. in life, male paratype (MZUSP 152... more FIGURE 6. A: Dorsal color pattern of Scinax haddadorum sp. nov. in life, male paratype (MZUSP 152190). B, C and D: habitats of S. haddadorum sp. nov.

Research paper thumbnail of Figure 3 In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 3. Nuptial pad of the left hand of Scinax haddadorum sp. nov., holotype (MZUSP 152328). A:... more FIGURE 3. Nuptial pad of the left hand of Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Dorsal view. B: Ventral view. Scale bar = 1 mm.

Research paper thumbnail of Figure 2 In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 2. Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Head in profile. B: Right hand ... more FIGURE 2. Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Head in profile. B: Right hand in ventral view. C: Right foot in ventral view. Scale bar = 2 mm.

Research paper thumbnail of Figure 1: Number of species with described vocalizations from Brazilian Atlantic Forest anuran families

Bioacoustics is a powerful tool used for anuran species diagnoses, given that advertisement calls... more Bioacoustics is a powerful tool used for anuran species diagnoses, given that advertisement calls are signals related to specific recognition and mate attraction. Thus, call descriptions can support species taxonomy. In spite of that, call descriptions are lacking for many species, delaying advances in biodiversity research. Here, we describe the advertisement calls of 20 anuran species from the Brazilian Atlantic Forest. We accessed 50 digital recordings deposited in the Fonoteca Neotropical Jacques Vielliard. Acoustic analyses were carried out in the software Raven pro 1.5. We provide a general comparison of call structure among species inside taxonomic groups and genera. The vocalizations described here belong to poorly known species, which are representatives of six families: Brachycephalidae, Bufonidae, Ceratophryidae, Cycloramphidae, Hylidae, and Phyllomedusidae. Despite this, still there are 163 species of anurans from Atlantic Forest with calls not formally described. Our work represents an important step in providing data for a taxonomic perspective and improving the knowledge of the Atlantic Forest anuran diversity.

Research paper thumbnail of <strong>A new species of <em>Scinax</em> Wagler (Anura: Hylidae) from Mato Grosso, Brazil</strong>

Zootaxa, 2016

A new species of the Scinax ruber Clade is described from Municipality of Barra do Garças, State ... more A new species of the Scinax ruber Clade is described from Municipality of Barra do Garças, State of Mato Grosso, Brazil. It is diagnosed by its size (SVL 29.4-35.4 mm in males); dorsum with a background that varies from light and dark gray to dark brown, with round and irregular dark blotches; hidden surfaces of thigh and shank light or dark brown, with lighter, large and irregular blotches (yellow in life); and nuptial pad that covers the medial margin of Metacarpal I, and obscures the posterior portion and the outer margin of the inner metacarpal tubercle. It is most similar with Scinax rupestris, from which it differs by having larger adult males; less developed nuptial pad; and hidden surfaces of thigh and light or dark brown, with lighter, large and irregular blotches (yellow in life). The new species occurs near the headwaters of permanent or temporary streams, where males call from vegetation or rocks at the margins of small streams.

Research paper thumbnail of Linking environmental drivers with amphibian species diversity in ponds from subtropical grasslands

Anais da Academia Brasileira de Ciências, 2015

ABSTRACTAmphibian distribution patterns are known to be influenced by habitat diversity at breedi... more ABSTRACTAmphibian distribution patterns are known to be influenced by habitat diversity at breeding sites. Thus, breeding sites variability and how such variability influences anuran diversity is important. Here, we examine which characteristics at breeding sites are most influential on anuran diversity in grasslands associated with Araucaria forest, southern Brazil, especially in places at risk due to anthropic activities. We evaluate the associations between habitat heterogeneity and anuran species diversity in nine body of water from September 2008 to March 2010, in 12 field campaigns in which 16 species of anurans were found. Of the seven habitat descriptors we examined, water depth, pond surface area and distance to the nearest forest fragment explained 81% of total species diversity. Water depth, margin vegetation type, surface area and distance to the next body of water explained between 31-74% of the variance in abundance of nine of the 16 species. Thus, maintenance of body ...

Research paper thumbnail of Floristic Similarity in a Forest-Savannah Ecotone in Western Bahia State, Brazil

Floresta, Oct 7, 2022

Similaridade florística em um ecótono entre Cerrado e floresta no oeste do estado da Bahia, Brasi... more Similaridade florística em um ecótono entre Cerrado e floresta no oeste do estado da Bahia, Brasil. O objetivo deste estudo foi gerar conhecimento sobre áreas de transição entre fitofisionomias para o entendimento e conservação desses ambientes singulares. Dessa forma, analisou-se a existência de diferentes grupamentos florísticos em um gradiente espacial inserido em um ecótono no município de São Desidério, Bahia. Para tanto, estabeleceu-se um transecto de aproximadamente 4,7 km, com orientação de nordeste para sudoeste, ao longo de um gradiente espacial. Doze (12) unidades amostrais, com dimensões de 10x50 m (500 m² cada) foram distribuídas ao longo do transecto. A seguinte metodologia foi empregada: primeiramente, as medidas de similaridade florística entre as parcelas amostrais foram calculadas; em seguida, essas parcelas foram agrupadas e os dados foram apresentados graficamente em um dendrograma (Cluster) e um diagrama de ordenação (nMDS); finalmente, os parâmetros fitossociológicos por grupo ordenado foram obtidos. Os resultados mostraram a presença de três grupamentos: Grupos I, II e III, classificados como savana arborizada, floresta estacional decidual e savana florestada, respectivamente. Os grupamentos florísticos se formaram gradualmente ao longo do gradiente espacial, e a transição entre as fitofisionomias não ocorre de forma abrupta, uma vez que a ordenação por grupos se dá mais por conta da diferença entre a abundância das espécies do que pela sua presença e/ou ausência. O padrão de distribuição das fitofisionomias ao longo do gradiente espacial indica associação com fatores abióticos, como as características pedológicas e o relevo incidentes ao longo do transecto, possivelmente criando um gradiente ambiental.

Research paper thumbnail of Climate change will threaten endemic frogs in the Araucaria Forests of South America

Climate change threatens ecosystem dynamics and species with extinction. Endemic species with res... more Climate change threatens ecosystem dynamics and species with extinction. Endemic species with restricted geographic distribution are especially vulnerable to the impacts of climate change and land use. Using a geographic distribution modeling approach with two future projections in time (years 2050 and 2080), two scenarios (lowest and highest carbon emissions), and land use, we predicted the trends in changing climatic areas for the future geographic distributions of seven species of endemic frogs in the Araucaria Forest of southeastern Brazil. Our results indicate that all species will lose important fractions, from 35–100%, of their current climatically suitable areas over the next 50 years. The impact of land use, on average, was 76% on all climatically suitable areas. Refugia and climatically suitable areas for all species will tend to move south, towards the current southern and easternmost areas of Araucaria Forest. Only a small fraction (3–10%) of the remaining climatically s...

Research paper thumbnail of Anfíbios dos campos da Mata Atlântica: influência relativa de gradientes ambientais e espaciais nos padrões de diversidade e estrutura filogenética

Research paper thumbnail of Caracterização citogenética de Cycloramphus bolitoglossus (Anura, Cycloramphidae)

Semina-ciencias Agrarias, 2017

AApesar de extremamente informativa em estudos taxonomicos e evolutivos, os dados sobre a estrutu... more AApesar de extremamente informativa em estudos taxonomicos e evolutivos, os dados sobre a estrutura cromossomica de anuros neotropicais ainda sao escassos, o que dificulta a inferencia dos mecanismos de evolucao cariotipica nesse grupo. O genero Cycloramphus e um exemplo claro dessa carencia de informacoes citogeneticas. O referido genero e composto atualmente por 27 especies, das quais apenas doze apresentam seus cariotipos descritos, e desses, grande parte se limitam ao conhecimento do numero e da morfologia cromossomica. Cycloramphus apresenta uma distribuicao restrita a regiao sul da Mata Atlântica e a maioria das especies sao conhecidas apenas em suas localidades-tipo. Esse fato motivou a inclusao de especies desse genero, como C. bolitoglossus , no Plano de Acoes Nacionais de Conservacao de especies ameacadas de extincao (PAN), visto a necessidade de adicionar dados da biologia, ecologia e genetica para a avaliacao de estado de conservacao dessa unidade taxonomica. Nesse traba...

Research paper thumbnail of Amphibians of the northern coast of the state of Paraná, Brazil

The Atlantic Forest possesses the greatest species richness and endemism of anurans among all Bra... more The Atlantic Forest possesses the greatest species richness and endemism of anurans among all Brazilian biomes. However, there are gaps in current understanding of the patterns of spatial distribution of these aspects, even though this knowledge is fundamental to conservation efforts. The eastern versant of the Serra do Mar Paranaense (Parana Coastal Mountain Chain) falls into this category. Although it is an important area, there have been only occasional inventories (i.e., the municipalities of Guaraquecaba and Morretes), without a general compilation of data on the anuran fauna. The objective of this investigation was to compile a regional listing of anuran species of the northern coast of the state of Parana. Thus, we summarize information on species richness, composition and natural history, and discuss taxonomic difficulties and conservation threats. We compiled records from museums and the literature for the municipalities of Antonina, Guaraquecaba and Morretes and performed ...

Research paper thumbnail of First report of predation by Pseudopaludicola mystacalis (Anura, Leptodactylidae)

belongs to the family Leptodactylidae, subfamily Leiuperinae (Pyron and Wiens, 2011), and include... more belongs to the family Leptodactylidae, subfamily Leiuperinae (Pyron and Wiens, 2011), and includes 21 species endemic to the Neotropics (Frost, 2016). Pseudopaludicola mystacalis (Cope, 1887) is a smallsized frog (maximum snout–vent length 16.3 mm in females) widely distributed throughout South America (Pansonato et al., 2014; Frost, 2016). However, some populations across the distribution range show distinct karyotypes, morphology, and vocalizations, suggesting the presence of a species complex (Fávero et al., 2011; Pansonato et al., 2013). Individuals of P. mystacalis typically show crepuscular activity, and males call from small swamps formed by headwaters and flowing rainwater, with creeping vegetation composed by grasses (Santana and Tostes, 2007). In addition, habitat use patterns by P. mystacalis are affected by grazing management and cattle (Pelinson et al., 2016). However, studies about diet and predator-prey interactions of this species are still absent. On 27 October 2016...

Research paper thumbnail of Amphibians of grasslands in the state of Paraná, southern Brazil (Campos Sulinos)

Amphibians have a wide variety of life histories strategies, playing important roles in aquatic a... more Amphibians have a wide variety of life histories strategies, playing important roles in aquatic and terrestrial food webs (Wells, 2007). They are particularly sensitive to environmental changes, due to their morphological and physiological traits, such as a highly permeable skin and complex life cycles (Duellman and Trueb, 1986). As a result, habitat loss, fragmentation, accompanied by microclimatic changes in temperature and humidity, are the main threats to local populations (Cushman, 2006; Becker et al., 2007). Recent research involving Brazilian amphibians has focused on species richness patterns and spatial distributions in poorly sampled regions (e.g., Conte and Rossa-Feres, 2006; Bastazini et al., 2007; Canelas and Bertoluci, 2007; Menin et al., 2008). Nonetheless, many gaps remain to understand the geographic distribution of amphibian species, such as in the grasslands (Campos Sulinos) of southern Brazil (reviewed in Santos et al., 2014). Campos Sulinos are the oldest vegetation formation in southern Brazil formed during the Pleistocene (Behling and Pillar, 2007). Over time, warmer and wetter climates have favored the introgression of patches of forests scattered among grasslands. Together, these grasslands and scattered forests form a natural mosaic landscape (Maack, 2012).

Research paper thumbnail of Area and distance from mainland affect in different ways richness and phylogenetic diversity of snakes in Atlantic Forest coastal islands

Ecology and Evolution, 2019

This is an open access article under the terms of the Creative Commons Attribution License, which... more This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Research paper thumbnail of Influência relativa de parâmetros ambientais e espaciais na diversidade de anuros (Amphibia: Anura) dos Campos Gerais, Paraná, Brasil

Research paper thumbnail of Scinax rossaferesae Conte, Araujo-Vieira, Crivellari & Berneck, 2016, sp. nov

<i>Scinax rossaferesae</i> sp. nov. (Figs. 1–3) <i>Scinax</i> sp. gr. &lt... more <i>Scinax rossaferesae</i> sp. nov. (Figs. 1–3) <i>Scinax</i> sp. gr. <i>ruber</i> — Crivellari <i>et al.</i> (2012), Crivellari <i>et al.</i> (2014: fig. 6G), Guerra &amp; Bastos (2014: fig. 25). <b>Holotype.</b> CFBH 21027, adult male, from Parque Estadual do Cerrado (24°14'47.16" S; 49°45'7.39" W), municipality of Jaguariaíva, state of Paraná, Brazil, collected on October 21, 2008 by B.V.M. Berneck, R. Recoder, M.V. Segalla, and P.H. Valdujo. <b>Paratypes.</b> Eleven adults collected in two localities in the state of Paraná, Brazil. All are males unless otherwise stated: MZUSP 157140–157142, MHNCI 9226–9228 from Parque Estadual Guartelá (24°37'49.54" S; 50°17'30.61" W), municipality of Tibagi, state of Paraná, Brazil, collected on March 30, 2011 and September 29, 2013. MHNCI 9841, 9843–9844, CFBH 39390 (female), 39391 from Parque Estadual Vila Velha (24°14'02'' S; 49°59'28'' W), municipality of Ponta Grossa, state of Paraná, Brazil, collected on March 30, 2011 and October 10, 2011. <b>Diagnosis</b>. The new species is diagnosed by the following set of characters: 1) SVL 27.8–31.6 mm in males; 2) subovoid snout in dorsal view and slightly acuminate in profile; 3) head slightly longer than wide (HL\HW=1.1– 1.2); 4) small-sized tympanum (1.2–1.44 mm); 5) single, median, subgular vocal sac that does not reach the pectoral region; 6) pointed tubercles absent on the lower jaw; 7) tibia length/snout-vent length = 0.50–0.53; 8) conspicuous pointed tubercle absent on the heel; 9) webbing on the feet always reaching the base of penultimate phalanx between toes II and V, and not surpassing, anteriorly, the proximal half of antepenultimate phalanx in Toe IV; 10) dorsum with a pale yellow, light to dark gray from dark brown, or black background, with round, irregular, and elongate darker blotches; 11) dorsal surface of the shanks with irregular and transversal darker markings; 12) posterior hidden surfaces of thighs light brown, light to dark gray, or black, with lighter, large and irregular blotches (yolk yellow in living [...]

Research paper thumbnail of Figure 9. A In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 9. A: Dorsal color pattern of Scinax rossaferesae sp. nov. in life (unvouchered specimen).... more FIGURE 9. A: Dorsal color pattern of Scinax rossaferesae sp. nov. in life (unvouchered specimen). B, C, and D: Habitats of S. rossaferesae sp. nov.

Research paper thumbnail of Figure 4 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 4. Scinax rossaferesae sp. nov. in life, male paratype (MHNCI 9843; SVL 28.7). A: Head in ... more FIGURE 4. Scinax rossaferesae sp. nov. in life, male paratype (MHNCI 9843; SVL 28.7). A: Head in lateral view. B: Body in dorsal view. C: Right hand in ventral view. D: Right foot in ventral view. Scales bars = 5 mm (upper) and 2 mm (lower).

Research paper thumbnail of Figure 8 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 8. Geographic distribution of Scinax rossaferesae sp. nov. in the Southern Brazilian Plate... more FIGURE 8. Geographic distribution of Scinax rossaferesae sp. nov. in the Southern Brazilian Plateau, showing its typelocality (red circle) and referred records (blue circles).

Research paper thumbnail of Figure 1 In A New Species Of Scinax Wagler (Anura: Hylidae) From Paraná, Southern Brazil

FIGURE 1. Scinax rossaferesae sp. nov. holotype (CFBH 21027; SVL 27.8). A: Dorsal view. B: Ventra... more FIGURE 1. Scinax rossaferesae sp. nov. holotype (CFBH 21027; SVL 27.8). A: Dorsal view. B: Ventral view.

Research paper thumbnail of Figure 6. A In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 6. A: Dorsal color pattern of Scinax haddadorum sp. nov. in life, male paratype (MZUSP 152... more FIGURE 6. A: Dorsal color pattern of Scinax haddadorum sp. nov. in life, male paratype (MZUSP 152190). B, C and D: habitats of S. haddadorum sp. nov.

Research paper thumbnail of Figure 3 In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 3. Nuptial pad of the left hand of Scinax haddadorum sp. nov., holotype (MZUSP 152328). A:... more FIGURE 3. Nuptial pad of the left hand of Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Dorsal view. B: Ventral view. Scale bar = 1 mm.

Research paper thumbnail of Figure 2 In A New Species Of Scinax Wagler (Anura: Hylidae) From Mato Grosso, Brazil

FIGURE 2. Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Head in profile. B: Right hand ... more FIGURE 2. Scinax haddadorum sp. nov., holotype (MZUSP 152328). A: Head in profile. B: Right hand in ventral view. C: Right foot in ventral view. Scale bar = 2 mm.

Research paper thumbnail of Figure 1: Number of species with described vocalizations from Brazilian Atlantic Forest anuran families

Bioacoustics is a powerful tool used for anuran species diagnoses, given that advertisement calls... more Bioacoustics is a powerful tool used for anuran species diagnoses, given that advertisement calls are signals related to specific recognition and mate attraction. Thus, call descriptions can support species taxonomy. In spite of that, call descriptions are lacking for many species, delaying advances in biodiversity research. Here, we describe the advertisement calls of 20 anuran species from the Brazilian Atlantic Forest. We accessed 50 digital recordings deposited in the Fonoteca Neotropical Jacques Vielliard. Acoustic analyses were carried out in the software Raven pro 1.5. We provide a general comparison of call structure among species inside taxonomic groups and genera. The vocalizations described here belong to poorly known species, which are representatives of six families: Brachycephalidae, Bufonidae, Ceratophryidae, Cycloramphidae, Hylidae, and Phyllomedusidae. Despite this, still there are 163 species of anurans from Atlantic Forest with calls not formally described. Our work represents an important step in providing data for a taxonomic perspective and improving the knowledge of the Atlantic Forest anuran diversity.

Research paper thumbnail of <strong>A new species of <em>Scinax</em> Wagler (Anura: Hylidae) from Mato Grosso, Brazil</strong>

Zootaxa, 2016

A new species of the Scinax ruber Clade is described from Municipality of Barra do Garças, State ... more A new species of the Scinax ruber Clade is described from Municipality of Barra do Garças, State of Mato Grosso, Brazil. It is diagnosed by its size (SVL 29.4-35.4 mm in males); dorsum with a background that varies from light and dark gray to dark brown, with round and irregular dark blotches; hidden surfaces of thigh and shank light or dark brown, with lighter, large and irregular blotches (yellow in life); and nuptial pad that covers the medial margin of Metacarpal I, and obscures the posterior portion and the outer margin of the inner metacarpal tubercle. It is most similar with Scinax rupestris, from which it differs by having larger adult males; less developed nuptial pad; and hidden surfaces of thigh and light or dark brown, with lighter, large and irregular blotches (yellow in life). The new species occurs near the headwaters of permanent or temporary streams, where males call from vegetation or rocks at the margins of small streams.

Research paper thumbnail of Linking environmental drivers with amphibian species diversity in ponds from subtropical grasslands

Anais da Academia Brasileira de Ciências, 2015

ABSTRACTAmphibian distribution patterns are known to be influenced by habitat diversity at breedi... more ABSTRACTAmphibian distribution patterns are known to be influenced by habitat diversity at breeding sites. Thus, breeding sites variability and how such variability influences anuran diversity is important. Here, we examine which characteristics at breeding sites are most influential on anuran diversity in grasslands associated with Araucaria forest, southern Brazil, especially in places at risk due to anthropic activities. We evaluate the associations between habitat heterogeneity and anuran species diversity in nine body of water from September 2008 to March 2010, in 12 field campaigns in which 16 species of anurans were found. Of the seven habitat descriptors we examined, water depth, pond surface area and distance to the nearest forest fragment explained 81% of total species diversity. Water depth, margin vegetation type, surface area and distance to the next body of water explained between 31-74% of the variance in abundance of nine of the 16 species. Thus, maintenance of body ...

Research paper thumbnail of Floristic Similarity in a Forest-Savannah Ecotone in Western Bahia State, Brazil

Floresta, Oct 7, 2022

Similaridade florística em um ecótono entre Cerrado e floresta no oeste do estado da Bahia, Brasi... more Similaridade florística em um ecótono entre Cerrado e floresta no oeste do estado da Bahia, Brasil. O objetivo deste estudo foi gerar conhecimento sobre áreas de transição entre fitofisionomias para o entendimento e conservação desses ambientes singulares. Dessa forma, analisou-se a existência de diferentes grupamentos florísticos em um gradiente espacial inserido em um ecótono no município de São Desidério, Bahia. Para tanto, estabeleceu-se um transecto de aproximadamente 4,7 km, com orientação de nordeste para sudoeste, ao longo de um gradiente espacial. Doze (12) unidades amostrais, com dimensões de 10x50 m (500 m² cada) foram distribuídas ao longo do transecto. A seguinte metodologia foi empregada: primeiramente, as medidas de similaridade florística entre as parcelas amostrais foram calculadas; em seguida, essas parcelas foram agrupadas e os dados foram apresentados graficamente em um dendrograma (Cluster) e um diagrama de ordenação (nMDS); finalmente, os parâmetros fitossociológicos por grupo ordenado foram obtidos. Os resultados mostraram a presença de três grupamentos: Grupos I, II e III, classificados como savana arborizada, floresta estacional decidual e savana florestada, respectivamente. Os grupamentos florísticos se formaram gradualmente ao longo do gradiente espacial, e a transição entre as fitofisionomias não ocorre de forma abrupta, uma vez que a ordenação por grupos se dá mais por conta da diferença entre a abundância das espécies do que pela sua presença e/ou ausência. O padrão de distribuição das fitofisionomias ao longo do gradiente espacial indica associação com fatores abióticos, como as características pedológicas e o relevo incidentes ao longo do transecto, possivelmente criando um gradiente ambiental.

Research paper thumbnail of Climate change will threaten endemic frogs in the Araucaria Forests of South America

Climate change threatens ecosystem dynamics and species with extinction. Endemic species with res... more Climate change threatens ecosystem dynamics and species with extinction. Endemic species with restricted geographic distribution are especially vulnerable to the impacts of climate change and land use. Using a geographic distribution modeling approach with two future projections in time (years 2050 and 2080), two scenarios (lowest and highest carbon emissions), and land use, we predicted the trends in changing climatic areas for the future geographic distributions of seven species of endemic frogs in the Araucaria Forest of southeastern Brazil. Our results indicate that all species will lose important fractions, from 35–100%, of their current climatically suitable areas over the next 50 years. The impact of land use, on average, was 76% on all climatically suitable areas. Refugia and climatically suitable areas for all species will tend to move south, towards the current southern and easternmost areas of Araucaria Forest. Only a small fraction (3–10%) of the remaining climatically s...

Research paper thumbnail of Anfíbios dos campos da Mata Atlântica: influência relativa de gradientes ambientais e espaciais nos padrões de diversidade e estrutura filogenética

Research paper thumbnail of Caracterização citogenética de Cycloramphus bolitoglossus (Anura, Cycloramphidae)

Semina-ciencias Agrarias, 2017

AApesar de extremamente informativa em estudos taxonomicos e evolutivos, os dados sobre a estrutu... more AApesar de extremamente informativa em estudos taxonomicos e evolutivos, os dados sobre a estrutura cromossomica de anuros neotropicais ainda sao escassos, o que dificulta a inferencia dos mecanismos de evolucao cariotipica nesse grupo. O genero Cycloramphus e um exemplo claro dessa carencia de informacoes citogeneticas. O referido genero e composto atualmente por 27 especies, das quais apenas doze apresentam seus cariotipos descritos, e desses, grande parte se limitam ao conhecimento do numero e da morfologia cromossomica. Cycloramphus apresenta uma distribuicao restrita a regiao sul da Mata Atlântica e a maioria das especies sao conhecidas apenas em suas localidades-tipo. Esse fato motivou a inclusao de especies desse genero, como C. bolitoglossus , no Plano de Acoes Nacionais de Conservacao de especies ameacadas de extincao (PAN), visto a necessidade de adicionar dados da biologia, ecologia e genetica para a avaliacao de estado de conservacao dessa unidade taxonomica. Nesse traba...

Research paper thumbnail of Amphibians of the northern coast of the state of Paraná, Brazil

The Atlantic Forest possesses the greatest species richness and endemism of anurans among all Bra... more The Atlantic Forest possesses the greatest species richness and endemism of anurans among all Brazilian biomes. However, there are gaps in current understanding of the patterns of spatial distribution of these aspects, even though this knowledge is fundamental to conservation efforts. The eastern versant of the Serra do Mar Paranaense (Parana Coastal Mountain Chain) falls into this category. Although it is an important area, there have been only occasional inventories (i.e., the municipalities of Guaraquecaba and Morretes), without a general compilation of data on the anuran fauna. The objective of this investigation was to compile a regional listing of anuran species of the northern coast of the state of Parana. Thus, we summarize information on species richness, composition and natural history, and discuss taxonomic difficulties and conservation threats. We compiled records from museums and the literature for the municipalities of Antonina, Guaraquecaba and Morretes and performed ...

Research paper thumbnail of First report of predation by Pseudopaludicola mystacalis (Anura, Leptodactylidae)

belongs to the family Leptodactylidae, subfamily Leiuperinae (Pyron and Wiens, 2011), and include... more belongs to the family Leptodactylidae, subfamily Leiuperinae (Pyron and Wiens, 2011), and includes 21 species endemic to the Neotropics (Frost, 2016). Pseudopaludicola mystacalis (Cope, 1887) is a smallsized frog (maximum snout–vent length 16.3 mm in females) widely distributed throughout South America (Pansonato et al., 2014; Frost, 2016). However, some populations across the distribution range show distinct karyotypes, morphology, and vocalizations, suggesting the presence of a species complex (Fávero et al., 2011; Pansonato et al., 2013). Individuals of P. mystacalis typically show crepuscular activity, and males call from small swamps formed by headwaters and flowing rainwater, with creeping vegetation composed by grasses (Santana and Tostes, 2007). In addition, habitat use patterns by P. mystacalis are affected by grazing management and cattle (Pelinson et al., 2016). However, studies about diet and predator-prey interactions of this species are still absent. On 27 October 2016...

Research paper thumbnail of Amphibians of grasslands in the state of Paraná, southern Brazil (Campos Sulinos)

Amphibians have a wide variety of life histories strategies, playing important roles in aquatic a... more Amphibians have a wide variety of life histories strategies, playing important roles in aquatic and terrestrial food webs (Wells, 2007). They are particularly sensitive to environmental changes, due to their morphological and physiological traits, such as a highly permeable skin and complex life cycles (Duellman and Trueb, 1986). As a result, habitat loss, fragmentation, accompanied by microclimatic changes in temperature and humidity, are the main threats to local populations (Cushman, 2006; Becker et al., 2007). Recent research involving Brazilian amphibians has focused on species richness patterns and spatial distributions in poorly sampled regions (e.g., Conte and Rossa-Feres, 2006; Bastazini et al., 2007; Canelas and Bertoluci, 2007; Menin et al., 2008). Nonetheless, many gaps remain to understand the geographic distribution of amphibian species, such as in the grasslands (Campos Sulinos) of southern Brazil (reviewed in Santos et al., 2014). Campos Sulinos are the oldest vegetation formation in southern Brazil formed during the Pleistocene (Behling and Pillar, 2007). Over time, warmer and wetter climates have favored the introgression of patches of forests scattered among grasslands. Together, these grasslands and scattered forests form a natural mosaic landscape (Maack, 2012).

Research paper thumbnail of Area and distance from mainland affect in different ways richness and phylogenetic diversity of snakes in Atlantic Forest coastal islands

Ecology and Evolution, 2019

This is an open access article under the terms of the Creative Commons Attribution License, which... more This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.