Primer Registro De Simpatría En Dos Especies De Scytalopus (Fam

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Primer Registro De Simpatría En Dos Especies De Scytalopus (Fam See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/347395387 Primer registro de simpatría en dos especies de Scytalopus (Fam. Rhinocryptidae) en Zapallar, Región de Valparaíso, Chile. Article in Revista Catalana d'Ornitologia · December 2020 CITATIONS READS 0 27 3 authors, including: Alejandro Correa Rueda Ricardo Rozzi University of North Texas 371 PUBLICATIONS 184 CITATIONS 346 PUBLICATIONS 5,573 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Notas sobre la biología del Pejeperro View project Reproductive success between two different genera of Birds: Carduelis vs Serinus (Passeriformes). View project All content following this page was uploaded by Alejandro Correa Rueda on 17 December 2020. The user has requested enhancement of the downloaded file. DOI: 10.2436/20.8100.01.25 Revista Catalana d’Ornitologia 36:79-82, 2020 Nota Curta / Short Note Primer registro de simpatría en dos especies de Scytalopus (Fam. Rhinocryptidae) en Zapallar, Región de Valparaíso, Chile Alejandro Correa¹, Javier A. Figueroa² & Ricardo Rozzi³ First record of sympatry between two species of tapaculos (Scytalopus sps; Fam. Rhinoc- ryptidae) in Zapallar, Valparaíso Region, Chile The Magellanic Tapaculo Scytalopus magellanicus is found in Chile from Cape Horn in the south to the Atacama Mountain Range and Termas del Toro in the north. The other species of the genus observed in Chile is the Dusky Tapaculo Scytalopus fuscus, which is distributed from Atacama in the north to the Imperial River and the Cordillera de Nahuelbuta in the extreme south. Some publications state that these two species are found in sympatry between the Imperial River and the Nahuelbuta Mountain Range (38° S), and Concepción and Bulnes (37° S). In this study we recorded observations and songs of individuals of both tapaculos spe- cies in the same fragments of the relict forests of Zapallar (Valparaíso Region, Chile). These are the first records that indicate that the geographical range of sympatry between these two Scytalopus species extends 5° north of 32° S along the Pacific coast. Key words: Understory birds, tapaculos, sympatric species, fragmented forests, Chile central. ¹Biólogo Senior. Calle Félix de Amesti N° 991, Of. 502, (CP.7550000), Santiago, Chile. ²Instituto de la Facultad de Ingeniería y Arquitectura. Universidad Central de Chile. Aveni- da Santa Isabel 1186 (CP.8330601), Santiago, Chile. ³Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Casilla 653, Santiago, Chile. *Corresponding author: [email protected] Received: 30.03.20; Accepted: 13.11.20 / Edited by J. Quesada El churrín magallánico Scytalopus magellanicus es al. 2011) y presenta una menor especificidad de una especie monotípica, de acuerdo con la clasi- hábitat que las otras especies de rinocríptidos ficación taxonómica de Krabbe & Schulenberg de Chile (Correa & Rozzi 2003). El churrín (2003). En el extremo sur de Chile se distribuye magallánico presenta dimorfismo sexual, los desde el cabo de Hornos (Clark 1986, Correa machos presentan un manchón blanco en parte 2012, Couve et al. 2016) y por el norte hasta la de la corona y la frente (Krabbe & Schulenberg cordillera de Atacama y Termas del Toro (Goo- 2003). La otra especie del género observado en dall el al. 1946, Medrano et al. 2018), por la costa Chile es el churrín sombrío Scytalopus fuscus, una del océano Pacífico se encuentra desde el bosque especie monotípica y endémica de Chile (Krabbe relicto del Parque Fray Jorge (al sur de Coquim- & Schulenberg 2003). En Chile se distribuye bo) 30° S hacía el sur (Cornelius et al. 2000). La desde Atacama por el norte hasta el río Imperial distribución altitudinal es entre el nivel del mar y la cordillera de Nahuelbuta 38° por el sur (No- hasta los 3.300 m s.n.m. (Medrano et al. 2018). rambuena et al. 2011). La distribución altitudinal Se encuentra en bosques templados de Chile y es entre el nivel del mar hasta los 4.000 m s.n.m. Argentina (Narozky & Yzurieta 2010, Rozzi et en Atacama (Martínez & González 2004). El Revista Catalana d’Ornitologia 36:79-82, 2020 A. Correa et al. hábitat que ocupa en Chile central y el sur es de 2020) por seis días en total. Para obtener de ambientes variables (Jaramillo 2003). Ambas respuestas vocales de los churrines se expusieron especies presentan diferentes vocalizaciones en un punto de observación del sitio de estudio (Riveros & Villegas 1994, Krabbe et al. 2020). grabaciones de playback obtenidas en la base Hay registros que muestran que el churrín de datos Center Xeno-Canto Foundation (có- magallánico y el churrín sombrío están en sim- digos Nº XC450127 del churrín sombrío y Nº patría entre río Imperial y el Biobío (Krabbe & XC102387 del churrín magallánico). El punto Schulenberg 2003). También en la cordillera de de observación fue un sitio de sotobosque con Nahuelbuta (Norambuena et al. 2011) y coha- dosel continuo, entre 06:00 y 08:30 h y entre bitan entre Concepción y Bulnes alrededor de 18:00 y 20:00 h, por los seis días. Una vez que los 37° S (Goodall et al. 1957). El trabajo aquí los churrines respondieron y se acercaron a las descrito refiere un nuevo registro de distribución grabaciones de playback, a pocos metros del en simpatría entre el churrín magallánico y el lugar de observación, se grabaron in situ sus voca- churrín sombrío a través del análisis de vocali- lizaciones con una grabadora (Huawei Y72018, zaciones y avistamiento en el bosque de Zapallar Modelo LDN-LX3). Las grabaciones de las dos (Región de Valparaíso). especies se pueden obtener en Center Xeno- El sitio de estudio se compone de una parte Canto Foundation (Códigos Nº XC536272 para de quebrada de área ≥3.577,39 m² (163,80 m el churrín sombrío y código Nº XC536273 para x 21,84 m; ≥32° de declive y 10 m de profun- churrín magallánico; Correa 2020a y 2020b). didad), próximo al Parque “El Boldo”, Zapallar Además de las respuestas vocales en el punto de (32° 32’S; 71°27’W; ≤530 m snm), Región de observación, para registrar cantos espontáneos Valparaíso. La vegetación dominante del área y avistamientos se realizaron durante seis días corresponde a un bosque relicto esclerófilo transectos de 20 metros de largo entre 06:00 y (Pérez & Villagrán 1985), el estrato emergente 08:30 h y entre 18:00 y 20:00 h. está dominado por boldo Peumus boldus, peumo El churrín magallánico se identificó auditi- Cryptocarya alba, patagua Crinodendron patagua vamente a través de cantos espontáneos (cinco y olivillo Aextoxicon punctatum. En el sotobosque registros), mediante el uso a respuestas de y márgenes de quebrada crecen especies como playback (nueve registros) y por avistamientos nalca Gunnera tinctoria y chagual Puya chilensis. (nueve registros). Por otra parte, el churrín El estudio se realizó durante la época repro- sombrío se identificó auditivamente, a través de ductiva (entre el 9 enero de 2020 y 22 febrero cantos espontáneos (ocho registros), respuestas Tabla 1. Registros del churrín sombrío Scytalopus fuscus y churrín magallánico Scytalopus magellanicus escucha- dos (E) y observados (O) en Quebrada del Cerro “El Boldo”, Zapallar, Chile central, durante su época reproduc- tiva. Los muestreos fueron realizados al amanecer entre 06:00 y 08:30 h y al atardecer entre 18:00 y 20:00 h. Records of the Dusky Tapaculo Scytalopus fuscus and Magellanic Tapaculo Scytalopus magellanicus heard (E) and observed (O) in the Cerro “El Boldo” ravine of Zapallar, central Chile during their breeding season. Simpling were carried out at dawn between 06:00 to 08:30 h and at dusk between 18:00 and 20:00 h. Especie Registro (E/O) N° de Registros Fecha Scytalopus fuscus E 2 10-01-2020 Scytalopus fuscus E 2 11-01-2020 Scytalopus fuscus E 2 02-02-2020 Scytalopus magellanicus E/O 3 02-02-2020 Scytalopus magellanicus E/O 4 03-02-2020 Scytalopus fuscus E 3 03-02-2020 Scytalopus magellanicus E/O 9 20-02-2020 Scytalopus fuscus E/O 5 20-02-2020 Scytalopus magellanicus E/O 7 21-02-2020 Scytalopus fuscus E/O 3 21-02-2020 S.magellanicus Escuchados (E)= 14; S. magellanicus Observados (O)= 9; S. fuscus Escuchados (E)= 12; S. fuscus Observados (O)= 5. Total de registros= 40. 80 Simpatría en dos especies de Scytalopus Revista Catalana d’Ornitologia 36:79-82, 2020 a playback (cuatro registros) y por avistamientos Oano (cinco registros). La frecuencia de audiciones Paio escuchadas (espontáneas + playback = 14) del churrín magallánico fue de 0,61 del total de los registros obtenidos para esta especie (Tabla Cona de 1). La frecuencia de individuos observados por Zaallar avistamiento para el churrín magallánico fue de 0,39 del total de los registros para esta especie. rea Zaallar Por otra parte, se registró una frecuencia de 0,7 32 S) registros escuchados (espontáneos + playback) rea de un total de 17 registros para churrín sombrío. Conein-lnes Por consiguiente, fueron observados por avis- 37 tamiento con una frecuencia de 0,29 del total rea aelta-ro de los registros (que corresponde a la suma de erial Oano registros escuchados como observados) para esta 38 S) Paio especie. Interesantemente en una oportunidad se acercó de manera agresiva a 2,5 m del playback de la vocalización del churrín sombrío, una pare- N ja de adultos de churrín magallánico, similar a lo registrado por Correa & Figueroa (2003). El indi- viduo macho de la pareja de churrín magallánico rea de siatra Registros de Crrn oro se distinguió por el manchón blanco sobre parte Registros de Crrn agallnio de la corona. Posteriormente, alrededor de diez Regin de solaaiento segundos después respondió con un canto un Churrín Sombrío a una distancia de ≤7 metros Figura 1.
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