The Paraguayan caiman (Caiman yacare) is the main Caimaninae species occurring in the Brazilian P... more The Paraguayan caiman (Caiman yacare) is the main Caimaninae species occurring in the Brazilian Pantanal Wetland. Despite the relative availability of works focused on biology and conservation of the Paraguayan caiman, almost nothing is known about its vocal structure and behavior. We recorded aggressive calls of adult caiman females guarding nests and, afterwards, the distress calls of the new born juvenile caimans in seasonally flooded areas of the Nhecolândia (Southern Pantanal). The results of both observations and sonographic analyses diverged from studies with other crocodilian species. Aggressive vocalization of adult females of the Paraguayan caiman was longer and more complex than the same vocalization of larger Alligatoridae species. Vocalizations of the young caimans presented interspecific differences with other crocodilian offsprings. Moreover, we found statistically significant intraspecific variation in the distress call structure among different pods, even separated ...
FIGURE 2. One advertisement call with 47 notes of Hylodes ornatus (MNRJ 33405) form Parque Nacion... more FIGURE 2. One advertisement call with 47 notes of Hylodes ornatus (MNRJ 33405) form Parque Nacional do Itatiaia, municipality of Itamonte, Minas Gerais, Brazil. A: oscilogram; B: sonogram; C: power spectrum.
Page 1. 1 Submetido em 21 de novembro de 2005. Aceito em 06 de junho de 2006. 2 Museu Nacional/UF... more Page 1. 1 Submetido em 21 de novembro de 2005. Aceito em 06 de junho de 2006. 2 Museu Nacional/UFRJ, Departamento de Vertebrados. Quinta da Boa Vista, São Cristóvão, 20940-040, Rio de Janeiro, RJ, Brasil. 3 E-mail: marcosbilate@gmail.com. ...
southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest ... more southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest (Haddad and Pombal, 1995; Nascimento, Pombal and Haddad, 2001). Currently, the genus comprises 24 species, divided in four species groups: H. asper, H. glaber, H. lateristrigatus and H. martensi group (Haddad and Pombal, 1995; Haddad, Pombal and Bastos, 1996; Frost, 2010; SBH, 2010). The Hylodes lateristrigatus species group is the most species rich, currently comprising 17 species (Canedo and Pombal, 2007). Hylodes lateristrigatus occurs in Espirito Santo and Rio de Janeiro states. In the State of Rio de Janeiro, the species occurs in the Colonia Alpina, Municipality of Teresopolis (Type-Locality, modified by Bokermann, 1966) and Municipality of Nova Friburgo (Canedo and Pombal, 2007). Herein, we report a new record of Hylodes lateristrigatus in the Rio de Janeiro State. During a field expedition in September 2010 at Parque Municipal Atalaia, Municipality of Macae, Rio de Janeiro State,...
The genus Hylodes Fitzinger is composed of diurnal frogs that live associated to lotic streams in... more The genus Hylodes Fitzinger is composed of diurnal frogs that live associated to lotic streams in forests (Lingnau et al. 2008; Silva & Benmaman 2008). In Brazil, this genus occurs from the states of Espírito Santo to Rio Grande do Sul (Lingnau et al. 2008; Frost 2011). Hylodes currently comprises 24 species (Frost 2011) distributed in four species groups (Heyer 1982): glaber; lateristrigatus; mertensi; and nasus. Hylodes ornatus (Bokermann) are included in “Hylodes lateristrigatus” species group with other 17 species (Silva & Benmaman 2008; Canedo & Pombal 2007). Fourteen out of 24 species of Hylodes have their larvae described (Pirani et al. 2011).
The genus Hylodes Fitzinger, 1926 occurs in southeastern and southern Brazil, associated with rhe... more The genus Hylodes Fitzinger, 1926 occurs in southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest (Haddad and Pombal, 1995; Nascimento, Pombal and Haddad, 2001). Currently, the genus comprises 24 species, divided in four species groups: H. asper, H. glaber, H. lateristrigatus and H. martensi group (Haddad and Pombal, 1995; Haddad, Pombal and Bastos, 1996; Frost, 2010; SBH, 2010). The Hylodes lateristrigatus species group is the most species rich, currently comprising 17 species (Canedo and Pombal, 2007). Hylodes lateristrigatus occurs in Espírito Santo and Rio de Janeiro states. In the State of Rio de Janeiro, the species occurs in the Colonia Alpina, Municipality of Teresópolis (Type-Locality, modified by Bokermann, 1966) and Municipality of Nova Friburgo (Canedo and Pombal, 2007). Herein, we report a new record of Hylodes lateristrigatus in the Rio de Janeiro State. During a field expedition in September 2010 at Parque Municipal Atalaia, ...
ABSTRACT Anuran vocalization is species-specific and bioacoustic analyses are important tools for... more ABSTRACT Anuran vocalization is species-specific and bioacoustic analyses are important tools for species delimitation. The present study describes the vocalization of Sphaenorhynchus mirim, recognizing two different types of call, here referred to as call type A and call type B. We analyzed a total of 86 calls of type A and 15 calls of type B. Call type A consists of a single multipulsed note with duration of 34.12–101.00 ms, with 9–25 pulses/note, pulse rate ranges from 240.40–338.21 pulses/sec and the dominant frequency is between 3085.51–3398.86 Hz. We arbitrarily subdivided the type B call into two patterns: Bd (with well-defined notes) and Bnd (with non-defined notes). Call type B with well-defined notes (n = 4) has 3–5 multipulsed notes, duration of 180.12–262.68 ms, note duration of 15.62–100.75 ms, interval between notes with 7.93–23.12 ms, 2–22 pulses/note and dominant frequency of 3067.77–3180.11 Hz. Call type B with non-defined notes (n = 11) has duration of 143.75–-218.12 ms; 26–32 pulses/ call and a dominant frequency of 3180.11–3375.22 Hz. Sphaenorhynchus mirim vocalization differs from all other species in the genus by its higher dominant frequency.
The extensive vocal repertoire of Leptodactylus natalensis is described. The field observations w... more The extensive vocal repertoire of Leptodactylus natalensis is described. The field observations were made at three forest fragments of the Tropical Atlantic Domain, in Northeast (State of Alagoas) and Southeast (State of Espírito Santo) regions of Brazil. The vocal repertoire of ...
The Paraguayan caiman (Caiman yacare) is the main Caimaninae species occurring in the Brazilian P... more The Paraguayan caiman (Caiman yacare) is the main Caimaninae species occurring in the Brazilian Pantanal Wetland. Despite the relative availability of works focused on biology and conservation of the Paraguayan caiman, almost nothing is known about its vocal structure and behavior. We recorded aggressive calls of adult caiman females guarding nests and, afterwards, the distress calls of the new born juvenile caimans in seasonally flooded areas of the Nhecolândia (Southern Pantanal). The results of both observations and sonographic analyses diverged from studies with other crocodilian species. Aggressive vocalization of adult females of the Paraguayan caiman was longer and more complex than the same vocalization of larger Alligatoridae species. Vocalizations of the young caimans presented interspecific differences with other crocodilian offsprings. Moreover, we found statistically significant intraspecific variation in the distress call structure among different pods, even separated ...
FIGURE 2. One advertisement call with 47 notes of Hylodes ornatus (MNRJ 33405) form Parque Nacion... more FIGURE 2. One advertisement call with 47 notes of Hylodes ornatus (MNRJ 33405) form Parque Nacional do Itatiaia, municipality of Itamonte, Minas Gerais, Brazil. A: oscilogram; B: sonogram; C: power spectrum.
Page 1. 1 Submetido em 21 de novembro de 2005. Aceito em 06 de junho de 2006. 2 Museu Nacional/UF... more Page 1. 1 Submetido em 21 de novembro de 2005. Aceito em 06 de junho de 2006. 2 Museu Nacional/UFRJ, Departamento de Vertebrados. Quinta da Boa Vista, São Cristóvão, 20940-040, Rio de Janeiro, RJ, Brasil. 3 E-mail: marcosbilate@gmail.com. ...
southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest ... more southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest (Haddad and Pombal, 1995; Nascimento, Pombal and Haddad, 2001). Currently, the genus comprises 24 species, divided in four species groups: H. asper, H. glaber, H. lateristrigatus and H. martensi group (Haddad and Pombal, 1995; Haddad, Pombal and Bastos, 1996; Frost, 2010; SBH, 2010). The Hylodes lateristrigatus species group is the most species rich, currently comprising 17 species (Canedo and Pombal, 2007). Hylodes lateristrigatus occurs in Espirito Santo and Rio de Janeiro states. In the State of Rio de Janeiro, the species occurs in the Colonia Alpina, Municipality of Teresopolis (Type-Locality, modified by Bokermann, 1966) and Municipality of Nova Friburgo (Canedo and Pombal, 2007). Herein, we report a new record of Hylodes lateristrigatus in the Rio de Janeiro State. During a field expedition in September 2010 at Parque Municipal Atalaia, Municipality of Macae, Rio de Janeiro State,...
The genus Hylodes Fitzinger is composed of diurnal frogs that live associated to lotic streams in... more The genus Hylodes Fitzinger is composed of diurnal frogs that live associated to lotic streams in forests (Lingnau et al. 2008; Silva & Benmaman 2008). In Brazil, this genus occurs from the states of Espírito Santo to Rio Grande do Sul (Lingnau et al. 2008; Frost 2011). Hylodes currently comprises 24 species (Frost 2011) distributed in four species groups (Heyer 1982): glaber; lateristrigatus; mertensi; and nasus. Hylodes ornatus (Bokermann) are included in “Hylodes lateristrigatus” species group with other 17 species (Silva & Benmaman 2008; Canedo & Pombal 2007). Fourteen out of 24 species of Hylodes have their larvae described (Pirani et al. 2011).
The genus Hylodes Fitzinger, 1926 occurs in southeastern and southern Brazil, associated with rhe... more The genus Hylodes Fitzinger, 1926 occurs in southeastern and southern Brazil, associated with rheophilic habitats in the Atlantic rainforest (Haddad and Pombal, 1995; Nascimento, Pombal and Haddad, 2001). Currently, the genus comprises 24 species, divided in four species groups: H. asper, H. glaber, H. lateristrigatus and H. martensi group (Haddad and Pombal, 1995; Haddad, Pombal and Bastos, 1996; Frost, 2010; SBH, 2010). The Hylodes lateristrigatus species group is the most species rich, currently comprising 17 species (Canedo and Pombal, 2007). Hylodes lateristrigatus occurs in Espírito Santo and Rio de Janeiro states. In the State of Rio de Janeiro, the species occurs in the Colonia Alpina, Municipality of Teresópolis (Type-Locality, modified by Bokermann, 1966) and Municipality of Nova Friburgo (Canedo and Pombal, 2007). Herein, we report a new record of Hylodes lateristrigatus in the Rio de Janeiro State. During a field expedition in September 2010 at Parque Municipal Atalaia, ...
ABSTRACT Anuran vocalization is species-specific and bioacoustic analyses are important tools for... more ABSTRACT Anuran vocalization is species-specific and bioacoustic analyses are important tools for species delimitation. The present study describes the vocalization of Sphaenorhynchus mirim, recognizing two different types of call, here referred to as call type A and call type B. We analyzed a total of 86 calls of type A and 15 calls of type B. Call type A consists of a single multipulsed note with duration of 34.12–101.00 ms, with 9–25 pulses/note, pulse rate ranges from 240.40–338.21 pulses/sec and the dominant frequency is between 3085.51–3398.86 Hz. We arbitrarily subdivided the type B call into two patterns: Bd (with well-defined notes) and Bnd (with non-defined notes). Call type B with well-defined notes (n = 4) has 3–5 multipulsed notes, duration of 180.12–262.68 ms, note duration of 15.62–100.75 ms, interval between notes with 7.93–23.12 ms, 2–22 pulses/note and dominant frequency of 3067.77–3180.11 Hz. Call type B with non-defined notes (n = 11) has duration of 143.75–-218.12 ms; 26–32 pulses/ call and a dominant frequency of 3180.11–3375.22 Hz. Sphaenorhynchus mirim vocalization differs from all other species in the genus by its higher dominant frequency.
The extensive vocal repertoire of Leptodactylus natalensis is described. The field observations w... more The extensive vocal repertoire of Leptodactylus natalensis is described. The field observations were made at three forest fragments of the Tropical Atlantic Domain, in Northeast (State of Alagoas) and Southeast (State of Espírito Santo) regions of Brazil. The vocal repertoire of ...
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