The Nest of the Cipó Canastero (Asthenes luizae), an Endemic Furnariid from the Espinhaço Range, Southeastern Brazil

Gomes, Henrique Belfort; Rodrigues, Marcos

doi:10.1676/08-098.1

Cited by 4 publications

(3 citation statements)

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“…In addition to habitat specialization, our data pointed to other factors contributing to the demographic fragility of Cipo Canasteros, including the small number, and probably low survival rates (Costa ), of females and limited dispersal movements. Other factors that threaten populations of Cipo Canasteros include low reproductive success due to predation and brood parasitism by cowbirds (Gomes and Rodrigues , Costa ), the naturally fragmented and limited amount of suitable habitat (< 10,000 km 2 ; Pena et al. ), climate change (Sekercioglu et al.…”

Section: Discussionmentioning

confidence: 99%

Home‐ranges, population densities, vocal behavior, and post‐fledging movements of Cipo Canasteros ( Asthenes luizae , Furnariidae), a rock‐specialist endemic of the highlands of eastern Brazil

2019

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Cipo Canasteros (Asthenes luizae, Furnariidae) have a fragmented and limited range restricted to the campos rupestres (rupestrian grasslands) habitat in the Brazilian highlands of the Espinhac ßo Range, and little is known about their behavior, ecology, and population biology. From March 2009 to November 2010, we monitored birds (24 banded and 22 radio-tracked) at two study sites at Serra do Cip o in the state of Minas Gerais, Brazil, to estimate their home-range sizes and population density, and describe their habitat use, natal dispersal behavior, and vocal behavior. We found an average density of 8.7 paired adults/ km² in our study areas or 22.9 paired adults/km 2 when considering only used habitats. The sex ratio was male-biased (males/total adults = 0.68), adults exhibited high site fidelity, home-ranges averaged 4.0 ha (fixed kernel 95%) or 3.5 ha (95% minimum convex polygon) in size, and both sexes defended territories yearround. We recorded four main types of songs, including two uttered more often during the breeding season. We monitored the natal dispersal of two males and one female who moved maximum distances of 1238 m, 780 m, and 1056 m, respectively, from natal areas. Our results confirm that Cipo Canasteros are restricted to the rocky-outcrop habitat of the campos rupestres. In part due to their habitat specialization, Cipo Canasteros are considered Near Threatened, but other factors contributing to their demographic fragility include the small number, and probably low survival, of females and low reproductive success due to predation and brood parasitism by cowbirds. Given these threats, along with their specialized habitat and restricted range, the future conservation of Cipo Canasteros will likely depend on the extent to which their campos rupestres habitat can be conserved. RESUMEN.Rango de hogar, densidad poblacional, comportamiento vocal y movimientos posteriores a la salida del nido en Asthenes luizae (Furnariidae), un especialista de rocas end emico de las tierras altas de BrasilAsthenes luizae (Furnariidae) tienen una distribuci on fragmentada y restringida al h abitat de campos rupestres de las tierras altas de la cordillera de Espinhac ßo. Se conoce poco sobre su comportamiento, ecolog ıa y biolog ıa poblacional. Desde Marzo de 2009, hasta Noviembre de 2010, monitoreamos aves (24 con anillos y 22 con radio transmisores) en dos sitios de estudio en Serra do Cip o en el estado de Minas Gerais, Brasil, con el fin de estimar el tamaño de sus rangos de hogar, la densidad poblacional y describir el uso de h abitat, comportamientos de dispersi on y comportamiento vocal. Encontramos una densidad promedio de 8.7 parejas de adultos/km 2 en nuestros sitios de estudio o 22.9 parejas de adultos/km 2 cuando consideramos solo los h abitat utilizados. La raz on sexual estuvo sesgada hacia los machos (machos/adultos totales = 0.68), los adultos tuvieron alta fidelidad de sitio, los rangos de hogar promediaron 4.0 ha (kernel fijado en 95%) o 3.5 ha (95% pol ıgono m ınimo convexo) en tamaño y ambos sexos d...

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Section: Discussionmentioning

confidence: 99%

Home‐ranges, population densities, vocal behavior, and post‐fledging movements of Cipo Canasteros ( Asthenes luizae , Furnariidae), a rock‐specialist endemic of the highlands of eastern Brazil

2019

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“…In the sky-island archipelagos formed by the mountain tops of eastern Brazil, there are nine endemic birds, including four ovenbirds (Furnariidae), two species of the Cinclodes genus and two of the Asthenes genus, all with a unique distribution, ecology, and evolutionary history (Chaves et al 2015). The poorly known Cipo Canastero Asthenes luizae is strongly associated with rocky outcrops in higher elevations of the Espinhaço Range, to which it is endemic (Vasconcelos et al 2008, Gomes and Rodrigues 2010, Costa 2015, Costa et al 2019, Freitas et al 2019b). Cipo Canastero was only described in 1990 based on one population discovered in Serra do Cipó, central Minas Gerais, south-eastern Brazil (Pearman 1990, Vielliard 1990).…”

Section: Introductionmentioning

confidence: 99%

Geographic range and conservation of the Cipo CanasteroAsthenes luizae, an endemic furnariid of Brazilian sky islands

Freitas

Costa

Chaves

et al. 2019

Bird Conservation International

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Summary Cipo Canastero Asthenes luizae is a relict ovenbird restricted to rocky outcrops at high elevations within the campo rupestre vegetation of the Espinhaço Range in the state of Minas Gerais, south-eastern Brazil. This poorly known species is considered ‘Near Threatened’, but recent studies have suggested that it should be listed under a higher category of threat. To contribute to the knowledge of this species and its conservation assessment and related planning, we compiled all literature records of the species distribution (n = 16 locations), collected new data on its occurrence (n = 72 locations), and calculated its geographic range using four different approaches. First, we defined the sky islands where the species occurs (nine units) using the lowest elevation value recorded (1,100 m asl) as a cut-off. Second, we performed species distribution modelling (SDM) across the sky islands and identified an area of 2,225.21 km2. Third, we measured the species’ extent of occurrence (EOO = 24,555.85 km2) and used SDM to estimate its upper limit (EOOup = 30,697.58 km2). Fourth, we measured the area of occupancy (AOO = 228 km2) and used SDM to estimate its upper limit (AOOup = 1,827.39 km2). We analysed the Cipo Canastero sky islands in terms of landscape metrics including size, isolation, protected area coverage, shape index, core area index, and proportion covered by SDM. We observed a very fragmented distribution, especially in the North sector of the species distribution, composed of small and isolated populations (separated by up to 112 km); the South sector is the core of its distribution and is composed of larger, more connected patches with differences in shape complexity that are not strongly influenced by an edge effect. The range sizes calculated, along with other reported information regarding population and habitat trends, justifies the inclusion of the species in at least the ‘Vulnerable’ category.

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“…Alphabetic footnotes comment on taxonomy; numeric footnotes comment on brood parasitism records. Lowther 19954 , Ortega 1998) and including new data 5,6 , in bold face, from Bowers and Dunning 1984, Brush 1998, Collins 1999, J. F. Chace in Gardaldi and Ballard 2000, Flood 2002, Corman and WiseGervais 2005, González-García 2007and Salgado-Ortiz et al 2008 List of known victims and hosts of Shiny Cowbird based primarily on the list in Friedmann and Kiff (1985) and incorporating 2 necessary deletions (see Fraga 2002 12 ) and several additions 13 in bold face (Dinelli 1918, Boggs 1961, 1993, Wood 1987, Kattan 1997, Di Giacomo 1998, López Lanús et al 1999, A. Azpiroz in BirdLife International 2000, Latta et al 2006, Gomes and Rodrigues 2010 13B , Costa 2013, R. M. Fraga pers. comm., C. J. Sharpe pers.…”

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Red-crested Cardinals use color and width as cues to reject Shiny Cowbird eggs

Segura

Sallo

Mahler

et al. 2016

The Auk

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The Nest of the Cipó Canastero (Asthenes luizae), an Endemic Furnariid from the Espinhaço Range, Southeastern Brazil

Cited by 4 publications

References 4 publications

Home‐ranges, population densities, vocal behavior, and post‐fledging movements of Cipo Canasteros ( Asthenes luizae , Furnariidae), a rock‐specialist endemic of the highlands of eastern Brazil

Home‐ranges, population densities, vocal behavior, and post‐fledging movements of Cipo Canasteros ( Asthenes luizae , Furnariidae), a rock‐specialist endemic of the highlands of eastern Brazil

Geographic range and conservation of the Cipo CanasteroAsthenes luizae, an endemic furnariid of Brazilian sky islands

Red-crested Cardinals use color and width as cues to reject Shiny Cowbird eggs

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