Reassessment of the advertisement call of topotypic Scinax squalirostris (Anura: Hylidae), with an acoustic evaluation of its occurrence in the Serra da Mantiqueira, southeastern Brazil

Author(s)

Giaretta, Ariovaldo Antonio ^[1] ; Lopes, Andre Gomes ^{[1, 2]} ; Bang, Davi Lee ^{[1, 2, 3]}

Affiliation

^[1] Univ Fed Uberlandia, Inst Ciencias Exatas & Nat Pontal, Lab Taxon & Sistemat Anuros Neotrop, BR-38304402 Ituiutaba, MG - Brazil

^[2] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto FF, Dept Biol, Programa Posgrad Biol Comparada, BR-14040901 Ribeirao Preto, SP - Brazil

^[3] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto FF, Lab Zool Vertebrados, BR-14040901 Ribeirao Preto, SP - Brazil

• Document type: Journal article
• Source: Phyllomedusa; v. 19, n. 1, p. 49-61, JUN 2020.
• Web of Science Citations: 0

Abstract

Scinax squalirostris (Lutz, 1925) is thought to occur along a broad range in South America. The values reported for calls of topotypes differ substantially among studies. Because vocalizations often play a key role in uncovering cryptic diversity, the call of S. squalirostris is herein redescribed based on a new sample of topotypes. The call of a population from Pocos de Caldas, Minas Gerais state, is also described. Topotypic advertisement calls have a dominant frequency between 3970 and 4125 Hz; 13-15 notes emitted at a rate of 24-27/s; call rate of 67/min and duration of 0.52-0.61 s; mid-call notes having 6 or 7 well-defined pulses, and an intra-note pulse rate of 223-266/s. Calls of the Pogos de Caldas population have dominant frequency between 4083 and 4358 Hz; 15-18 notes emitted at a rate of 32-34/s; call rate of 64/min and duration of 0.46-0.56 s; mid-call notes having 6 or 8 well-defined pulses, and an infra-note pulse rate of 252-312/s. The advertisement calls of these populations have some differences with each other, and are promptly distinguished from calls of morphologically similar species. Our data to topotypes are inconsistent with some previously reported. A more detailed study of the population from Pocos de Caldas is required, and more marked differences may be found in populations more distant from type locality of S. squalirostris. (AU)

• FAPESP's process: 17/27137-7 - Vocal anatomy evolution associated with the acoustic diversity in Bokermannohyla Faivovich, Haddad, Garcia, Frost, Campbell & Wheeller, 2005 (Anura, Hylidae, Cophomantini)
• Grantee: Davi Lee Bang
• Support Opportunities: Scholarships in Brazil - Doctorate