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Brazilian Journal of Biology

Print version ISSN 1519-6984On-line version ISSN 1678-4375

Braz. J. Biol. vol.77 no.3 São Carlos July/Sept. 2017  Epub Nov 16, 2016

https://doi.org/10.1590/1519-6984.03616 

Notes and Comments

First record of the Lesser Snouted Treefrog Scinax nasicus (Cope, 1862) in Brazilian coast and new species records for the state of Rio Grande do Sul

Primeiro registro da perereca-de-banheiro Scinax nasicus (Cope, 1862) na costa do Brasil e novos registros para o estado do Rio Grande do Sul

D. A. Dalmolina  * 

F. O. Rosab 

M. D. Freirec 

L. F. M. Fontea 

I. F. Machadod 

C. N. Paulae 

D. Loebmanne 

E. Péricof 

aPrograma de Pós-graduação em Biologia Animal, Laboratório de Herpetologia, Universidade Federal do Rio Grande do Sul – UFRGS, Avenida Bento Gonçalves, 9500, Agronomia, CEP 91501-970, Porto Alegre, RS, Brazil

bDepartamento Nacional de Infraestrutura de Transportes – DNIT, Serviços Técnicos de Engenharia S.A. – STE, Praça 7 de Julho, 36, Sala 02, CEP 96020-010, Pelotas, RS, Brazil

cTeia Projetos Ambientais Ltda, Rua Amazonas 180, CEP 95520-000, Osório, RS, Brazil

dInstituto Boitatá, Avenida 136, Qd. F-44, Lojas 01 e 02, Setor Sul, CEP 74093-250, Goiânia, GO, Brazil

eLaboratório de Vertebrados, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande – FURG, Avenida Itália, Km 8, Vila Carreiros, CEP 96203-900, Rio Grande, RS, Brazil

fLaboratório de Ecologia e Sensoriamento Remoto, Centro Universitário – UNIVATES, Rua Avelino Talini, 171, CEP 95900-000, Lajeado, RS, Brazil


Abstract

Herein, we provide new occurrence records of Scinax nasicus (Cope, 1862) for the state of Rio Grande do Sul, Southern Brazil. All new records here provide are located on Southern half of the state. Besides this, we provide the first record for species in Brazilian coastal zone. Those records improve considerably our knowledge regarding species distribution in Southern Brazil.

Keywords:  Brazil subtropical; Pampa Domain; Scinax ruber clade

Resumo

Aqui, nós fornecemos novos registros de ocorrência de Scinax nasicus (Cope, 1862) para o estado do Rio Grande do Sul, Sul do Brasil. Todos os novos registros aqui fornecidos estão localizados na metade sul do estado. Além disso, nós fornecemos o primeiro registro para a espécie na zona costeira brasileira. Esses registros melhoram consideravelmente o nosso conhecimento sobre a distribuição da espécie no Sul do Brasil.

Palavras-chave:  Brasil subtropical; Domínio do Pampa; clado Scinax ruber

Scinax nasicus (Cope, 1862) is morphologically characterized by having a flattened body, rounded snout in dorsal view and truncated in side view, and it has a relatively small body size (~35 mm CRC) by comparison with other species of the Scinax ruber clade (Pombal Junior et al., 1995). Even so, species may be confounded with other sympatric species of S. ruber clade, such Scinax fuscovarius (Lutz, 1925), Scinax granulatus (Peters, 1871) and Scinax perereca (Pombal Junior et al., 1995). When available, advertisement call is one of the more effective tools to confirm species identification once that it has shorter duration compose by a single note by comparison with their congeners.

Scinax nasicus is widely distributed in open areas of South America, including Atlantic Forest, Cerrado, Chaco, Pampa, and Pantanal domains (for example, Mato Grosso, Mato Grosso do Sul, southern Goiás, western Minas Gerais, São Paulo, Paraná, Rio de Janeiro, Santa Catarina and Rio Grande do Sul) (Frost, 2016), between 12° to 35° S latitude. At the political distribution point of view species has been recorded to North and Central Argentina, eastern Bolivia, Central, South-Southeastern Brazil, Paraguay, and extreme Northwestern Uruguay (Giménez and Gallego, 2000; Salas and Di Tada, 2001; Candioti et al., 2004; Carezzano and Cabrera, 2010; Maneyro and Carreira, 2012; Kwet et al., 2004; Frost, 2016). For the state of Rio Grande do Sul, previous records are known for the municipalities of Caçapava do Sul (Both et al., 2011), Itaqui (Giasson, 2001), Santa Maria (Cechin et al., 2002), Alvorada, Esteio, Gravataí, Porto Alegre, and Triunfo (Fonte et al., 2013). Herein, we provide a updated map of distribution for species in Rio Grande do Sul with new records unpublished so far. Also, a new record for coastal zone Brazil is here presented.

New records of Scinax nasicus were obtained throughout sampling fields carried out in the state of Rio Grande do Sul, Southern Brazil at three distinct campaigns, as follow. For confirm species identification we used Pombal Junior et al. (1995) and Maneyro and Carreira (2012) as well as advertisement call of males recorded in field collections. On October 26, 2014, five specimens were found at Moinhos do Campo farm, municipality of Bom Retiro do Sul (29°34’38” S, 51°55’41” W). On November 6th, 2014, at the Monte Bonito, municipality of Pelotas (22°37’01” S, 64°93’66” W) two specimens were collected. Finally, on February 15th, 2016, at Ilha dos Marinheiros, municipality of Rio Grande (31°59’52.30” S, 52°06’06” W), three specimens were collected. Voucher specimens are deposited on the UFRGS Herpetological Collection (7103-7107) and Herpetological Collection at FURG (CHFURG 3213, 3214, 4447-4449). Collecting permits was authorized by Instituto Chico Mendes de Conservação da Biodiversidade (Licence Number 43658-1).

In addition to the sampling fields, we examined deposited material in the scientific collections of the state. We found S. nasicus specimens at Museu de Ciências e Tecnologia da Pontifícia Universidade Católica do Rio Grande do Sul (MCP) and Coleção Zoológica de Referência da Universidade Federal de Santa Maria (ZUFMS). Therefore, unpublished records were found to the municipalities of Canoas (MCP 8440), Dom Feliciano (ZUFSM 2918), Manoel Viana (UFRGS 4078, 4457-4460), Rosário do Sul (MCP 5718-5721, 5769) and Uruguaiana (MCP 7593-7595, 7597).

The new records here provided increases from seven to 15 the number of municipalities with confirmed presence of Scinax nasicus (Figure 1). Based on previous record for the state and species distribution in Uruguay (see Maneyro and Carreira, 2012) western records should be considered predictable. Eastwards records, however, should be considered unexpected once that Rio Grande do Sul coastal plan has been sampled over the past 30 years with no previous records for species so far (e.g. Gayer et al., 1988; Loebmann and Figueiredo, 2004; Loebmann and Vieira, 2005; Quintela et al., 2011), including inventories at the same are that species was found (Quintela et al., 2009). Likewise, although species is widely distributed in Brazilian territory this is the first record of S. nasicus to Brazilian coast. Data presented here provides evidence that Scinax nasicus is widespread distributed in the state, although it seems to be relatively rare in eastern wards of the state. Our records improve considerably the knowledge of species distribution at Southern Brazil.

Figure 1 Distribution of Scinax nasicus in Rio Grande do Sul, Brazil, where previous records are characterized by circle and the new records are triangles in inland and star in coastal Ilha dos Marinheiros, municipality of Rio Grande record. 

Acknowledgements

We thank the Centro Universitário UNIVATES to the financial support, to Rafael Schuler and Elizabeth Farias for helped in field collection. Patrick Colombo, Tiago Gomes dos Santos for their valuable contributions and for encouraging this work. To Luis F. Marin da Fonte for has helped in the reviews of scientific collections and this manuscript. CNP are grateful to CAPES for providing MSc. Scholarship.

(With 1 figure)

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Received: March 15, 2016; Accepted: May 21, 2016

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