Anurans of Sete Cidades National Park, Piauí state, northeastern Brazil

Araújo, Kássio Castro; Andrade, Etielle Barroso de; Brasileiro, Ana Carolina; Benício, Ronildo Alves; Sena, Felipe P.; Silva, Rayone A.; Santos, Antonia Joyce S.; Costa, Claylton A.; Ávila, Róbson Waldemar

doi:10.1590/1676-0611-bn-2020-1061

Cited by 4 publications

(1 citation statement)

References 58 publications

(64 reference statements)

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“…We present the first record of Leptodactylus natalensis for the interior of the state of Maranhão, 385 km away from Ilhas Canários, Delta do Parnaíba municipality ( Leite et al, 2008 ); this species was previously known only from the coastal region of Brazil ( Frost, 2023 ). We also provide the first record of Leptodactylus pustulatus in Maranhão, in Aldeias Altas municipality, located 289 km away from Sete Cidades National Park, state of Piauí ( Araújo et al, 2020 ); this species is known to occur in arid and semiarid regions of northeastern Brazil ( Frost, 2023 ). Our finding of Elachistocleis cesarii is also the first record for the state of Maranhão.…”

Section: Resultsmentioning

confidence: 99%

Discovering the diversity of tadpoles in the mid-north Brazil: morphological and molecular identification, and characterization of the habitat

Sousa,

Azevedo,

Barros

et al. 2023

PeerJ

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Brazil stands out for presenting the highest amphibian anuran diversity in the world. However, taxonomic studies that address characteristic of larval stage of anurans are incipient, representing only 62% of known species. We assess the species diversity of tadpoles from eastern Maranhão state, mid-northern region of Brazil based on morphological and molecular identification (i.e., 16S rRNA gene fragment), and we also provide characteristics of the habitats occupied by each species. We carried out 30 field samplings during 13 months in 16 environments along an ecotonal area, over five cities inside the limits of state of Maranhão, between the Maranhão Babaçu Forest and Cerrado ecoregions. We searched for tadpoles in a variety of water bodies, and the tadpoles that reached the developmental stage between 34 to 40 Gosner were morphologically identified. The tadpoles collected herein represent 26 species belonging to five families. The external morphology enabled the identification of 24 species, while the molecular data recognized 22 unique evolutionary units. The most represented family was Hylidae (Hylinae 11 spp., Phyllomedusinae one spp.) followed by Leptodactylidae (Leptodactylinae seven spp., Leiuperinae three spp.), Microhylidae (Gastrophryninae two spp.), and Bufonidae (two spp.). Our results show that oral morphology was the most important character for identifying tadpoles based on morphology, and the specific 16S rRNA primer was suitable for molecular identification. This study pioneers the use of both morphological and molecular data to identify tadpoles in the state of Maranhão. It also provides, for the first-time, habitat characteristic for the species. Our study reveals a high number of anuran species sampled at the larval stage in the region, identifies species that require further taxonomic and systematic attention, and extends the geographic distribution of six species, three of which represent new occurrences for the state. Our results strengthen the hypothesis that the diversity of amphibians from Maranhão is underestimated and highlight the importance of herpetological inventories in poorly sampled areas, decentralizing the knowledge of biodiversity.

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Section: Resultsmentioning

confidence: 99%

Discovering the diversity of tadpoles in the mid-north Brazil: morphological and molecular identification, and characterization of the habitat

Sousa,

Azevedo,

Barros

et al. 2023

PeerJ

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Diversity of helminth parasites in amphibians from northeastern Brazil

et al. 2022

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Herpetofauna of protected areas in the Caatinga VIII: An updated checklist for the Serra das Confusões region with new data from Serra Vermelha, Piauí, Brazil

Marques,

Garda,

Furtado

et al. 2023

Biota Neotrop.

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It is repeatedly stressed the need to characterize the extant biodiversity in tropical ecosystems. However, inventory studies are still progressing slowly in dry ecosystems, leading to the underestimation of their true biodiversity and hindering conservation efforts. In this study, we present primary and secondary data, along with an updated list of amphibians and reptiles from two localities in the São Francisco-Gurguéia region in Piauí. Additionally, we compare the species composition between nine areas within the Caatinga, which were sampled using standardized methods over the past ten years, to examine broader spatial patterns of community composition. To survey reptiles and amphibians, we employed similar methods and sampling efforts in two areas within the Serra das Confusões National Park (SCNP) region. Our surveys recorded a total of 73 species of amphibians and reptiles, of which 24 are new distribution records for the SCNP region. Consequently, our findings increase the known herpetofauna in the region to 94 species. Despite their proximity, the two sites in the SCNP region exhibited only 42% similarity in species composition, and they differed significantly from other areas within the Caatinga. Furthermore, even the closer Caatinga areas presented differences in species composition, highlighting the necessity to evaluate biodiversity across the landscape and contribute to understanding biogeographic patterns.

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Anurans of Sete Cidades National Park, Piauí state, northeastern Brazil

Cited by 4 publications

References 58 publications

Discovering the diversity of tadpoles in the mid-north Brazil: morphological and molecular identification, and characterization of the habitat

Discovering the diversity of tadpoles in the mid-north Brazil: morphological and molecular identification, and characterization of the habitat

Diversity of helminth parasites in amphibians from northeastern Brazil

Herpetofauna of protected areas in the Caatinga VIII: An updated checklist for the Serra das Confusões region with new data from Serra Vermelha, Piauí, Brazil

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