Natural history of the Lined Seedeater<i>Sporophila lineola</i>(Aves: Thraupidae) in southeastern Brazil

Ferreira, Dalila de Fátima; Lopes, Leonardo Esteves

doi:10.1080/00222933.2017.1319518

Cited by 16 publications

(16 citation statements)

References 20 publications

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“…Here, we report a record of a social paper wasp predating a nestling of the Lined Seedeater Sporophila lineola , a small Neotropical songbird that lives in open habitats and builds cup‐shaped nests in which they lay two or three eggs (Ferreira & Lopes, 2017).…”

Section: Introductionmentioning

confidence: 99%

Social paper wasp (Agelaia pallipes) predates songbird nestling

2020

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The social paper wasp Agelaia pallipes is known to eat carrion and scavenge on vertebrates. There are few records of wasps predating vertebrates, including an attack on an adult hummingbird and the predation of bird nestlings. During a project monitoring reproductive behaviour of a neotropical songbird, the Lined Seedeater Sporophila lineola in south‐eastern Brazil, we recorded the predation of a four‐day‐old nestling by a social paper wasp. In the video, the adult female bird attempted to visit the nest prior to the predation. The male could be seen with its crest feathers erect after a wasp left the nest, when the nestling was presumably already dead. When we arrived at the nest to remove the camera, we found the nestling dead, and did not observe the parents in the vicinity. We also registered two other dead nestlings in a different nest with similar wounds. However, the conclusive cause of death of those nestlings is unknown. Nest predation is a major selective pressure in birds, and insects are rarely assumed to play a notable role in this process. Further research is needed to better understand the nature of the relationship between wasps and birds.

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Section: Introductionmentioning

confidence: 99%

Social paper wasp (Agelaia pallipes) predates songbird nestling

2020

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“…Many migrants are faithful to their breeding grounds, which is hypothetically one of the main adaptive drivers for the evolution of migration (Winger et al 2019). Thus far, site-fidelity data applies exclusively to the breeding grounds in South America and is known for only few species: 10 neotropical austral migrants (Jahn et al 2009, Presti et al 2018) and only two South American intratropical migrant Passerines, namely the Lined Seedeater (Sporophila lineola) (Ferreira & Lopes 2017), and the Whitethroated Kingbird (Tyrannus albogularis) (Lopes et al 2018). Unfortunately, details on fidelity are too rare to provide a thorough discussion (Lopes et al 2018).…”

Section: Discussionmentioning

confidence: 99%

Longitudinal and Cyclic Poleward Migration of a South American Intratropical Migrant Flycatcher, the Lesser Elaenia (Elaenia Chiriquensis)

Guaraldo

2021

Ornitol. Neotrop.

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Research on terrestrial migratory birds is incipient in Brazil. Geolocators have recently allowed tracking small migratory passerines, and such data combined with intrinsic markers such as stable isotopes has become invaluable in revealing migratory behavior. Here we used data from a long-term banding program in a Cerrado reserve in central Brazil where we also deployed geolocators to track adults of a 15g flycatcher, the Lesser Elaenia (Elaenia chiriquensis). The literature defines it as a resident or migrant that may overwinter in the Amazon or Central Brazil. Our general goals were to describe the breeding site fidelity of individuals, their migratory behavior and wintering grounds, thus assessing the migratory connectivity of the studied population. We tagged 40 birds in 2011-2012 and successfully extracted data for three recaptured individuals. We analyzed data using GeoLight and QGIS. Recapture data showed that individuals lived for at least 12yrs and that ~15% of all marked birds returned to a ~200 ± 185m radius from where it was recorded in a previous breeding season. Tracking data revealed low migratory connectivity of the studied population. One individual remained resident. The other two individuals migrated through distinct routes: one made a longitudinal northeast-southwest route and the other a cyclic migration consisting of a poleward section to south Brazil, a NW flight to the Pantanal surroundings and ending with a longitudinal NE spring migration. These are the first detailed data of the migratory movements of individual Lesser Elaenias, supporting its partial rather than obligatory migration in central Brazil. Moreover, we found that migrants overwintered in savanna-like areas, supporting previous studies. We included and discussed a list of hypotheses we expect to guide further studies on this and other intratropical migrant species, thus contributing to improving knowledge on this complex and understudied migratory system.

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“…Lined Seedeaters inhabit pastures dominated by African grasses ( Panicum and Brachiaria ), crops, and gardens around buildings and ponds. 19…”

Section: Methodsmentioning

confidence: 99%

“…Only the females build the nests and incubate the eggs, while both sexes feed the nestlings. 19,21,22 The typical clutch size is two or three eggs and individuals can make up to six attempts per season ( unpublished data ). The mean incubation period is of 12.7 days and average nestling period is of 11.2 days.…”

Section: Methodsmentioning

confidence: 99%

Male plumage colouration predicts female reproductive investment and nestling survival in a colour dimorphic tropical songbird

Ferreira

Cunha

Lopes

2023

Avian Biology Research

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In sexually colour dimorphic bird species, males can exhibit phenotypic variation, with males breeding in either dull female-like plumage or brightly coloured plumage. Two contradictory hypotheses predict that the male phenotype variation can influence the female investment in a given breeding attempt. Whereas females usually prefer males in bright coloured plumage, the “differential allocation hypothesis” predicts that females should invest more in their reproductive output when mating with them; while the “compensatory investment hypothesis” predicts that females should invest more when mating with non-preferred males. To test those predictions, we analysed reproductive data for two consecutive breeding seasons (2018–2019 and 2019–2020) of Lined Seedeaters Sporophila lineola. S. lineola is a socially monogamous songbird species in which males exhibit two breeding phenotypes, a black-and-white plumage being the most common, and a less common female-like brownish plumage. Our findings show that females mated with brownish males have a higher reproductive investment (i.e., egg volume) than those mated with black-and-white males. Despite the lower investment of females in egg volume, our results showed that black-and-white males have a higher nestling survival, producing more hatchings and fledglings per season than brownish males, which could suggest a higher fitness. Our findings indicate that investment allocation on the eggs and offspring survival rates can be attributed to the plumage colour of males.

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Natural history of the Lined SeedeaterSporophila lineola(Aves: Thraupidae) in southeastern Brazil

Cited by 16 publications

References 20 publications

Social paper wasp (Agelaia pallipes) predates songbird nestling

Social paper wasp (Agelaia pallipes) predates songbird nestling

Longitudinal and Cyclic Poleward Migration of a South American Intratropical Migrant Flycatcher, the Lesser Elaenia (Elaenia Chiriquensis)

Male plumage colouration predicts female reproductive investment and nestling survival in a colour dimorphic tropical songbird

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