The dark side of pumpkin toadlet: a new species of Brachycephalus (Anura: Brachycephalidae) from Serra do Brigadeiro, southeastern Brazil

Guimarães, Carla Silva; Luz, Sofia; Rocha, Pedro Carvalho; Feio, Renato Neves

doi:10.11646/zootaxa.4258.4.2

Cited by 925 publications

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“…Pulsed notes are characteristic of all species of Brachycephalus (compilations in Monteiro et al 2018a,b, Pie et al 2018, and this study). Members of the B. ephippium and B. hermogenesi Groups have notes with several pulses, as follow: 5-8 in B. darkside (Guimarães et al 2017); 5-15 in B. ephippium (Pombal Jr. et al 1994); 7-11 in B. sulfuratus (Condez et al 2016); 7-12 in B. crispus (Condez et al 2014); and 7-14 in B. pitanga (Tandel et al 2014). These values are Table 1.…”

Section: Discussionmentioning

confidence: 99%

“…In the last decade, intensified fieldwork has led to the description of 23 species (Frost 2018), but data on natural history lag behind the rate of new species descriptions. Advertisement calls have been described for 12 of 36 species (33%): B. actaeus Haddad, 2018 (Monteiro et al 2018a); B. ephippium (Spix, 1824) (Pombal et al 1994, Goutte et al 2017; B. albolineatus Bornschein, Ribeiro, Blackburn, Stanley, andPie, 2016 (Bornschein et al 2018); B. crispus Condez, Clemente-Carvalho, Haddad, andReis, 2014 (Condez et al 2014); B. darkside Guimarães, Luz, Rocha, andFeio, 2017 (Guimarães et al 2017); B. hermogenesi (Giaretta and Sawaya, 1998) (Verdade et al 2008); B. mirissimus Pie, Ribeiro, Confetti, Nadaline, andBornschein, 2018 (Pie et al 2018); B. olivaceus Bornschein, Morato, Firkowski, Ribeiro andPie, 2015 (Monteiro et al 2018b); B. pitanga Alves, Sawaya, Reis, and Haddad, 2009(Araújo et al 2012, Tandel et al 2014, Goutte et al 2017; B. quiririensis Ribeiro, 2015 (Monteiro et al 2018b); B. sulfuratus Haddad, 2016 (Condez et al 2016); and B. tridactylus Garey, Lima, Hartmann, andHaddad, 2012 (Garey et al 2012).…”

Section: Introductionmentioning

confidence: 99%

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Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

et al. 2019

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Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae). Miniaturized frogs of the genus Brachycephalus have restricted geographical distributions throughout the Atlantic Forest. Ecological data for most species are scarce and advertisement calls have been described for only 12 of the 36 known species, including B. tridactylus. The considerable duration of note length of the advertisement call of B. tridactylus has been mentioned in comparative studies of vocalizations in Brachycephalus. The single original recording of B. tridactylus, together with recordings made in March 2016 at the type locality, were analyzed to document any variation and redescribe the advertisement call of the species. In the recent recordings of B. tridactylus, the average length of the call is 50.8 s and the call is composed of 10–13 notes emitted at a note rate of 3.7–8.3 notes per min. The notes are isolated and composed of 1–3 pulses, with the note duration varying from 0.002–0.021 s. These values are not consistent with the original description of the call of B. tridactylus. The note duration is 89% shorter and the original description does not include notes with 1–3 pulses. The notes of B. tridactylus have few pulses, whereas those of B. ephippium have several. The advertisement call of B. tridactylus differs from that of B. albolineatus and B. mirissimus by having only isolated notes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

et al. 2019

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“…Reis, 2010, and B. vertebralis Pombal, 2001(Bornschein et al 2016a, Guimarães et al 2017, whereas B. pernix group includes B. actaeus Monteiro, Condez, Garcia, Comitti, Amaral & Haddad, 2018, B. albolineatus Bornschein, Ribeiro, Blackburn, Ribeiro, 2015, B. izecksohni Ribeiro, Alves, Haddad & Reis, 2005, B. leopardus Ribeiro, Firkowski & Pie, 2015, B. mariaeterezae Bornschein, Morato, Firkowski, Ribeiro & Pie, 2015, B. mirissimus Pie, Ribeiro, Confetti, Nadaline & Bornschein, 2018, B. olivaceus Bornschein, Morato, Firkowski, Ribeiro & Pie, 2015, B. pernix…”

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confidence: 99%

A second record of the recently described Brachycephalus albolineatus Bornschein, Ribeiro, Blackburn, Stanley & Pie, 2016 (Anura, Brachycephalidae)

Teixeira¹,

Ribeiro²,

Corrêa³

et al. 2018

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When Brachycephalus albolineatus was described, it was known only from its type locality in the state of Santa Catarina, Brazil. Here we provide a new record for the species. Collected specimens were identified in comparison with the type series. We collected 7 specimens in Morro do Garrafão, municipality of Corupá, state of Santa Catarina, at 500–530 m above sea level, in December 2016. The new record is 22 km away from the type locality and also extends the altitudinal distribution of the species, which was previously between 790–835 m above sea level.

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“…Thus, the possibility that the calls of these species include isolated notes and note groups cannot be assessed, preventing comparisons of the macrostructural features with the call of B. tridactylus. Brachycephalus ephippium (Pombal Jr. et al 1994), B. pitanga (Tandel et al 2014), B. crispus (Condez et al 2014), B. sulfuratus (Condez et al 2016), and B. darkside (Guimarães et al 2017) present notes with several pulses, being macrostructurally distinct from B. tridactylus. This species presents 1-3 pulses per note, instead of 5-15 in B. ephippium, 7-14 in B. pitanga, 7-12 in B. crispus, 7-11 in B. sulfuratus, and 5-8 in B. darkside.…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, this high level of new descriptions has not been followed by similar rate of ecological and related studies describing their diet, behaviour, and calls, among other topics. Advertisement calls were described for 33% of the species, specifically for B. ephippium (Pombal Jr. et al 1994;Goutte et al 2017), B. hermogenesi (Verdade et al 2008), B. pitanga (Araújo et al 2012;Tandel et al 2014;Goutte et al 2017), B. tridactylus (Garey et al 2012), B. crispus (Condez et al 2014), B. sulfuratus (Condez et al 2016), B. darkside (Guimarães et al 2017), B. actaeus (Monteiro et al 2018a), B. albolineatus (Bornschein et al 2018), B. quiririensis and B. olivaceus (Monteiro et al 2018b), and B. mirissimus (Pie et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Supplemental Information 12: 046_Brachycephalus_tridactylus_individual_09_collected_MHNCI_10730_by_MR_Bornschein

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Background. Brachycephalus includes miniaturized frogs with restricted geographical distributions throughout the Brazilian Atlantic Forest. Ecological data for most species are still scarce. For instance, advertisement calls have only been described for 12 of the 36 known species, including B. tridactylus, a recently described species from southern Brazil. Posteriorly, features of the advertisement call of B. tridactylus were compared with congeners and the unique characteristics of its call were highlighted. To confirm these potentially divergent characteristics, we reanalysed an original recording of B. tridactylus and analysed our own recordings and verified that the original description of its advertisement call is inaccurate. Thus, we redescribe its advertisement calls. Methods. We asked the descriptors of B. tridactylus the original recordings that they made and requested access to the only original recording deposited in a collection of sounds. We received from André Lima a copy of one recording, the same as the one that had deposited, and obtained permission to re-analyze it. We studied this recording and compared it with our own recordings, made at the type locality of the species on March, 2016. Sound samples were analysed with Raven Pro 1.5.0 and call analyses were made under a note-centered approach. Results. The original recording was amplified somehow by at least 6 dB and was also clearly low-pass filtered with a cutoff frequency of 10 kHz. Our analyses did not allow us to recognize several of the acoustic parameters normally described in Brachycephalus. The sound we heard from the notes overlapped with other signals (noise?), which prevented us from clearly determining the end of the note and other important features, such as the presence of pulses. According to our recordings (n = 15 individuals), B. tridactylus emitted a relatively long advertisement call (50.8 s, on average), composed by 10-13 notes emitted in a note rate of 3.7-8.3 notes per minute. Only isolated notes were present. The notes were composed by 1-3 pulses and the note duration varied from 0.002-0.021 s. Discussion. The original description of the call of B. tridactylus is incorrect because it included background noise and amplification artefacts as part of the call parameters. However, we recognize that the original recording and our recordings have captured the same type of call. In our measurements of the species calls, note duration was nearly an order of magnitude shorter as the original description. The existence of notes with 1-3 pulses was not acknowledged in the original description. With few pulses per notes, the advertisement call of B. tridactylus is distinct from the notes with several pulses of B. ephippium, B. pitanga, B. crispus, B. sulfuratus, and B. darkside. The advertisement calls of B. tridactylus is also distinct from that of B. albolineatus and B. mirissimus by having only isolates notes, instead of

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The dark side of pumpkin toadlet: a new species of Brachycephalus (Anura: Brachycephalidae) from Serra do Brigadeiro, southeastern Brazil

Cited by 925 publications

References 0 publications

Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

A second record of the recently described Brachycephalus albolineatus Bornschein, Ribeiro, Blackburn, Stanley & Pie, 2016 (Anura, Brachycephalidae)

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The dark side of pumpkin toadlet: a new species of Brachycephalus (Anura: Brachycephalidae) from Serra do Brigadeiro, southeastern Brazil

Cited by 925 publications

References 0 publications

Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

Redescription of the advertisement call of Brachycephalus tridactylus (Anura: Brachycephalidae)

A second record of the recently described Brachycephalus albolineatus Bornschein, Ribeiro, Blackburn, Stanley &amp; Pie, 2016 (Anura, Brachycephalidae)

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A second record of the recently described Brachycephalus albolineatus Bornschein, Ribeiro, Blackburn, Stanley & Pie, 2016 (Anura, Brachycephalidae)