Another color morph of Sporophila Seedeater from the capuchinos group (Aves, Emberizidae)

Repenning, Márcio; Rovedder, Cristiano Eidt; Fontana, Carla Suertegaray

doi:10.1590/s0073-47212010000400012

Cited by 12 publications

(11 citation statements)

References 10 publications

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“…The notes of the introduction, main song and calls of all other species of capuchinos are clearly different, both observed in our comparison, as with the direct comparison with the characteristic spectrograms for capuchinos that other authors have published (see Areta 2008, Repenning et al 2010, Areta et al 2011, Areta and Repenning 2011a, 2011b, Campagna et al 2011). Note that in the introductions of other species (Figure 3I-VII), all notes have a frequency distribution almost vertical and descending in all cases, whereas in S. iberaensis these notes are ascending or stable, but mostly appears in the form of main note with shape of “Eiffel Tower” with a significant frequency range both ascending and descending symmetrically.…”

Section: Remarkssupporting

confidence: 71%

“…We did not find that any other species of capuchinos had the note shaped as an “Eiffel Tower” that is consistently present in the introductions of S. iberaensis . We consider this a diagnostic note of the species both considering our study of spectrograms of six species of capuchinos, and the spectrograms provided in the results of studies by Areta (2008), Areta et al (2011), Areta and Repenning (2011a, 2011b) and Repenning et al (2010).…”

Section: Remarksmentioning

confidence: 92%

“…IS A Neotropical genus of ca 30 species of small (8-10 g) seedeaters of forests, grasslands and wetlands from southern United States to southern South America (Ridgely and Tudor 1989). In recent years a group of smaller species of Sporophila known as capuchinos, that inhabit southern South America grasslands, have attracted increasing interest by researchers who have studied their plumage, vocalizations, breeding ecology, systematic and evolution (Lijtmaer et al 2004, Facchinetti et al 2008, 2011, Areta 2008, 2009, Areta et al 2011, Benites et al 2010, Machado and Silveira 2011, Campagna et al 2009, 2012, Areta and Repenning 2011a, 2011b, Repenning et al 2010). In spite of diverse plumages, vocalizations, and habitat uses of the species of this group some studies indicate that they are genetically very similar (Lijtmaer et al 2004, Campagna et al 2009, 2012).…”

Section: Resumen-mentioning

confidence: 99%

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A New Species of Seedeater (Emberizidae: Sporophila) from the Iberá Grasslands, in Northeast Argentina

Giacomo

Lanús²,

Kopuchian

2016

Preprint

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We describe a new species of capuchino of the genus Sporophila 1 (Emberizidae) of the Esteros del Iberá, province of Corrientes, in northeastern Argentina. 2 This species would have remained unidentified due to lack of ornithological explorations in 3 the central area of the Esteros del Iberá. It has been confused with immature individuals of 4 other Sporophila species. We made observations of behavior and habitat, playback 5 experiments, comparative analyzes of the vocalizations and plumage with other sympatric 6 species of the same genus, and we found this species, which we have named Sporophila 7 iberaensis, inhabiting wet grasslands from the edges of the marshes, having a unique vocal 8 repertoire and a unique plumage. Because of its restricted geographical distribution and the 9 threats that have their habitat, this new species should be categorized as Vulnerable on the 10 IUCN Red List. 11 Sporophila, vocalizations 13 14 RESUMEN.-Describimos una nueva especie de capuchino del género Sporophila 15 (Emberizidae) de los Esteros del Iberá, provincia de Corrientes, en el noreste de Argentina. 16 Esta especie habría permanecido sin identificar debido a la falta de exploraciones 17 ornitológicas en la región central de los Esteros del Iberá y además habría sido confundida 18 con individuos inmaduros de otras especies de Sporophila. Realizamos observaciones de 19 comportamiento y hábitat, experimentos de playback, análisis comparativos de las 20 vocalizaciones y comparaciones del plumaje con otras especies simpátricas del mismo 21 género encontrando que esta especie, a la que nombramos como Sporophila iberaensis, 22 habita pastizales húmedos de los bordes de los esteros, presentando un repertorio vocal y un 1 plumaje únicos. Debido a su distribución restringida y las amenazas que tiene su hábitat, 2 esta nueva especie debe ser categorizada como Vulnerable en la lista roja de la IUCN. 3 4 SPOROPHILA IS A Neotropical genus of ca 30 species of small (8-10 g) seedeaters of 1

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Section: Remarkssupporting

confidence: 71%

Section: Remarksmentioning

confidence: 92%

Section: Resumen-mentioning

confidence: 99%

See 1 more Smart Citation

A New Species of Seedeater (Emberizidae: Sporophila) from the Iberá Grasslands, in Northeast Argentina

Giacomo

Lanús²,

Kopuchian

2016

Preprint

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“…The taxonomy of the southern capuchinos is based on male plumage coloration and song, and to a lesser extent on geographic distribution and habitat use (Meyer de Schauensee , Ridgely and Tudor , Rising et al ). Recent detailed analyses of these traits have led to the discovery of alternative color morphs within some species (Repenning et al , Areta and Repenning , Areta et al ), the merger of previously recognized taxa (Areta ), and helped identify the sister species to the core southern capuchino radiation (Machado and Silveira , , Campagna et al ). The southern capuchino species that are currently recognized show statistically significant differences in their songs and plumage attributes, which are maintained in sympatry (Benites et al , Campagna et al ).…”

mentioning

confidence: 99%

Song‐based species discrimination in a rapid Neotropical radiation of grassland seedeaters

Benites

Campagna

Tubaro

2014

Journal of Avian Biology

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Acoustic signals among newly diverged taxa have the potential to convey species identity, information that is key to reducing hybridization. Capuchino seedeaters constitute a remarkable example of recently radiated endemic species from the grasslands of South America. They are sexually dimorphic and show striking differences in male plumage coloration and song. Contrasting with this divergence in phenotype most species show extremely low neutral genetic differentiation and lack of reciprocal monophyly, which is interpreted to be a product of recent common ancestry and hybridization. Here we use field‐based playback experiments to test for the first time if males of two species, Sporophila hypoxantha and S. palustris, discriminate between conspecific and heterospecific song. Using various measures of behavior we find that both species react more strongly to their own songs. The response to playback from another southern capuchino cannot be differentiated from that of a control song from a more distantly related Sporophila species. Additionally, we did not find evidence for reinforcement as the response of S. hypoxantha did not differ between individuals that co‐occur with S. palustris and those that do not. Our finding suggests that song, a culturally inherited trait, may help maintain reproductive isolation between species in the rapid and explosive capuchino radiation.

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“…Despite the limitation of only being able to detect putative hybrids in a single sex and age class, a number of unusual coloration patterns have been described in four capuchino seedeater species: Sporophila hypoxantha has an alternative coloration morph known as uruguaya [ 20 ], S . melanogaster presents the xumanxu morph [ 21 ], S . ruficollis the caraguata morph [ 22 ] and S .…”

Section: Introductionmentioning

confidence: 99%

Transgressive phenotypes and evidence of weak postzygotic isolation in F1 hybrids between closely related capuchino seedeaters

Campagna

Mazzulla²

2018

PLoS ONE

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Postzygotic reproductive isolation may become strong only once the process of speciation is in its advanced stages. For taxa in the early stages of speciation, prezygotic reproductive isolation barriers may play a predominant role in maintaining species boundaries. Here, we study the recent capuchino seedeater biological radiation, a group of highly sympatric species from the genus Sporophila that have diversified during the Pleistocene in Neotropical grasslands. Capuchinos can be diagnosed by adult male coloration patterns and song, two sets of characters known to contribute to pre-mating reproductive isolation. However, it remains unknown whether potzygotic incompatibilities contribute to maintaining species limits in this group. Here we use existing breeding records from captive individuals to test for patterns consistent with F1 inviability. We compare hatching success, fledging success, and the sex ratio at adulthood between conspecific and hybrid capuchino pairs. We observed a trend towards lower numbers of the heterogametic sex among adult hybrids, consistent Haldane's rule, but this was supported by only one of our statistical tests. Our study is the first to document hybrid male capuchino phenotypes based on known crosses. We observed phenotypes that were similar or intermediate to those of the parental species, as well as novel plumage patterns that have not been described in the wild. One cross produced a plumage pattern that has been observed at low frequencies in natural populations. We discuss the implications of our results for understanding the relative importance of the mechanisms of reproductive isolation in capuchino seedeaters.

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Another color morph of Sporophila Seedeater from the capuchinos group (Aves, Emberizidae)

Cited by 12 publications

References 10 publications

A New Species of Seedeater (Emberizidae: Sporophila) from the Iberá Grasslands, in Northeast Argentina

A New Species of Seedeater (Emberizidae: Sporophila) from the Iberá Grasslands, in Northeast Argentina

Song‐based species discrimination in a rapid Neotropical radiation of grassland seedeaters

Transgressive phenotypes and evidence of weak postzygotic isolation in F1 hybrids between closely related capuchino seedeaters

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