Do beak volume and bite force influence the song structure of sympatric species of seedeaters (Thraupidae:<i>Sporophila</i>)?

Porzio, N. S.; Repenning, Márcio; Fontana, Carla Suertegaray

doi:10.1080/01584197.2018.1535833

Cited by 9 publications

(3 citation statements)

References 45 publications

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“…2018, Porzio et al. 2019). However, additional bite‐force data are needed to better understand the relationship between the form and function of the avian cranio‐mandibular complex.…”

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confidence: 98%

“…Birds are underrepresented in the field of vertebrate bite performance, with the literature biased toward reptiles, particularly squamates (Herrel et al 1999, 2001, Verwaijen et al 2002, Baeckens et al 2017, Penning 2017, Baxter-Gilbert and Whiting 2019. Avian bite-force data have been reported for a few taxa, mostly passerines (van der Meij and Bout 2004, 2006, Herrel et al 2005a, 2009, Degrange et al 2010, Soons et al 2010, Sustaita and Hertel 2010, Corbin et al 2015, Rao et al 2018, Porzio et al 2019). However, additional bite-force data are needed to better understand the relationship between the form and function of the avian craniomandibular complex.…”

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confidence: 99%

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A low‐cost, easy‐to‐build, and portable bite‐force transducer for birds

Carril

Degrange

Mendoza

et al. 2021

J of Field Ornithology

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Few investigators have examined in vivo bite-force of birds, likely due, at least in part, to the difficulty in accessing suitable force transducers. We describe a low-cost, easy-to-build, and portable force transducer with the goal of encouraging ornithologists to improve our knowledge of in vivo bite forces of birds. We used a commercial piezo-resistive force sensor (Tekscan © ) to construct our transducer, and measure the bite forces of captive birds with different beak morphologies, including the following species: Greater Rhea (Rhea americana), Black-chested Buzzard-Eagle (Geranoaetus melanoleucus), King Vulture (Sarcoramphus papa), Toco Toucan (Ramphastos toco), and Graylag Goose (Anser anser). Bite forces ranged from 25.1 N for the Toco Toucan to 109.9 N for the King Vulture. By using the bite forces obtained in our study and those reported for other birds in the literature, a regression analysis was performed, revealing that half of the variation in bite force is explained by allometry, with other factors such as beak morphology likely explaining the remaining variation. Our bite-force transducer should allow researchers to obtain low-cost, reliable biteforce data, which will improve our understanding of the relationship between form and function of the avian cranio-mandibular complex. RESUMEN.Un transductor de fuerza de mordida para aves de bajo costo, fácil construcci ón y portátil Pocos investigadores han medido la fuerza de mordida in vivo de aves, principalmente debido a la dificultad para acceder a transductores de fuerza adecuados. Aquı ´se describe un transductor de fuerza de bajo costo, fácil construcción y portátil con el objetivo de incentivar a ornitólogos/as a incrementar el conocimiento sobre la fuerza de mordida real de las aves. Para la construcción del transductor se usó un sensor piezo-resistivo (Tekscan©). Se midió la fuerza de mordida de aves en cautiverio y con distintas morfologı ´as de pico, incluyendo al ñandú (Rhea americana), al águila mora (Geranoaetus melanoleucus), al jote real (Sarcoramphus papa), al tucán grande (Ramphastos toco) y al ganso doméstico (Anser anser). El rango de fuerzas de mordida obtenido fue de entre 25,1 N para el tucán grande y 109,9 N para el jote real. Con los valores de fuerza de mordida aquı ´obtenidos y con aquellos publicados en la bibliografı ´a para otras aves se realizó una regresión que reveló que la mitad de la variación en la fuerza de mordida es explicada por alometrı ´a y que otros factores como la morfologı ´a del pico probablemente explican la variación restante. El transductor de fuerza de mordida aquı ´descrito permitirá a los investigadores obtener datos de fuerza de mordida fiables y de manera económica, lo que mejorará nuestra comprensión de la relación entre la forma y la función del complejo cráneomandibular de las aves.

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“…2018, Porzio et al. 2019). However, additional bite‐force data are needed to better understand the relationship between the form and function of the avian cranio‐mandibular complex.…”

mentioning

confidence: 98%

mentioning

confidence: 99%

A low‐cost, easy‐to‐build, and portable bite‐force transducer for birds

Carril

Degrange

Mendoza

et al. 2021

J of Field Ornithology

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“…The main explanations for this involve mechanical limitations, since singing demands motor, respiratory and nervous structures coordination to achieve specific song patterns (Gil & Gahr 2002, Vehrencamp et al 2013). In trills, note repetition involves rapid air pulses and syrinx movements, while frequency modulation requires mainly syrinx and beak movements (Podos 1997, 2001, but see Porzio et al 2018a,b for different, even opposite, patterns in non-trilled vocalizations). Compared to producing narrower frequency bands, to produce songs with wider ones, birds need to change more their beak gape along singing.…”

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confidence: 99%

Song of the Riverbank Warbler Myiothlypis rivularis: Male Constraints and Female Territorial Signaling

Fratoni,

Manica

2023

Acta Ornithologica

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Birds defend territories by engaging in potentially costly behaviours, such as vocalizations and aggressive interactions. Songs are usually good proxies of individual quality, thus could help guarantee access and exclusivity to food, sexual partners and nesting sites. We described territorial and vocal behaviours of the Riverbank Warbler Myiothlypis rivularis, a year-round territorial wood-warbler (family Parulidae), and tested for relationships between territory size and individuals' vocal attributes. From October 2018 to April 2019, we banded 14 males and 9 females in the Atlantic Forest of south Brazil. We estimated territory sizes of nine pairs and recorded 10 and 5.4 h of 9 males and 6 females vocalizations, respectively. In male songs, a tradeoff between trill rate and frequency bandwidth indicates mechanical vocal constraints in the production of both parameters. Territory size did not relate to male song parameters, which could signal individual, rather than territorial, quality. However, females with broader bandwidth songs occupied smaller territories. Although the reduced sample size, which precludes generalization, this result may be a first indication of female song acting on territoriality in this species. Overall, this work presents new data on Riverbank Warbler and contributes to the knowledge on vocal tradeoffs in male songs and both male and female territorial behavior for wood-warblers. In addition, we highlight the need for further studies focused on female song, which like male song could be associated with territory defense.

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Vocal Performance in Songbirds: From Mechanisms to Evolution

Podos

Sung

2020

The Neuroethology of Birdsong

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Do beak volume and bite force influence the song structure of sympatric species of seedeaters (Thraupidae:Sporophila)?

Cited by 9 publications

References 45 publications

A low‐cost, easy‐to‐build, and portable bite‐force transducer for birds

A low‐cost, easy‐to‐build, and portable bite‐force transducer for birds

Song of the Riverbank Warbler Myiothlypis rivularis: Male Constraints and Female Territorial Signaling

Vocal Performance in Songbirds: From Mechanisms to Evolution

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