Breeding biology of the critically endangered Araripe Manakin (Antilophia bokermanni) in Brazil

Gaiotti, Milene G.; Oliveira, Joao H. de; Macêdo, Regina H.

doi:10.1676/18-170

Cited by 6 publications

(6 citation statements)

References 42 publications

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“…However, many ‘typical' tropical forest birds have also been found to exhibit decreased reproductive effort under unusual or adverse climatic conditions. Recent correlational studies suggest that reproductive skipping may be common among tropical frugivores (Rivera‐Milán 1996, Lindsey et al 1997, Halupka and Greeney 2009, Ortiz‐Maciel et al 2014, Reuleaux et al 2014, Gaiotti et al 2019), and it is well documented among insectivores in arid habitats, where availability of arthropod prey is directly correlated with primary productivity and rainfall (Marchant 1960, Faaborg 1982, Grant et al 2000, Domingues 2012). Martin and Mouton (2020) recently found evidence for reduced breeding activity in response to drought by 34 of 38 species of tropical songbirds at two forest sites, particularly in long‐lived species (for which reproductive skipping was associated with higher survival probabilities).…”

Section: Discussionmentioning

confidence: 99%

The El Niño – Southern Oscillation dramatically influences the probability of reproduction and reproductive rate of a tropical forest bird

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Smith

Riehl

2021

Journal of Avian Biology

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Although climate change has been implicated in population declines of tropical forest birds, there is a critical lack of data on the mechanisms underlying these declines. Attempts to link climatic factors to variation in adult survival, fecundity or nest success have been largely inconclusive. Recent community‐scale analyses have suggested that tropical birds may be less likely to breed under adverse conditions, but long‐term data on individual reproduction are needed to test this hypothesis. Here we leverage 12 years of data on a lowland forest bird, the greater ani Crotophaga major, to investigate how demographic parameters vary with phase of the El Niño – Southern Oscillation (ENSO), a major driver of climatic conditions in tropical wet forest. The likelihood of breeding and annual reproductive rate both decreased dramatically in El Niño‐like years, with only 37.5% of adults attempting breeding in 2015 (a strong El Niño year). For birds that did breed, however, clutch size and daily nest predation rate were unaffected by climate. Of the local climate variables investigated, dry season length and the frequency of high temperatures were most closely associated with reproductive failure. These results indicate that El Niño conditions alter the demography of greater anis by reducing the likelihood of reproduction, a response that may be more widespread than currently recognized. We suggest that reduced reproduction under adverse conditions represents an important and understudied aspect of the life histories of tropical forest birds.

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Section: Discussionmentioning

confidence: 99%

The El Niño – Southern Oscillation dramatically influences the probability of reproduction and reproductive rate of a tropical forest bird

Smart

Smith

Riehl

2021

Journal of Avian Biology

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“…Both Araripe and helmeted manakins occur outside of lowland tropical forest biomes typical of many manakin species, inhabiting instead geographically narrow and fragmented strips of humid forests surrounded by savannah or other xeric biomes that differ substantially from the humid forest strips [43,44,47]. It is likely that extrinsic selective factors caused the Araripe manakin to diverge substantially from the lekking system typical of its closest relatives.…”

Section: Discussionmentioning

confidence: 99%

“…Araripe manakins consume both fruits and arthropods, although the former are the more critical component of their diets [46]. Females lay clutches of one or two eggs during the rainy season, and nesting success is relatively high (72%) for the Neotropics [47]. No previous study has been conducted on any aspect of the species' mating system or behaviour.…”

Section: Study Species and Research Sitementioning

confidence: 99%

“…Araripe manakin clutches contain one or two eggs that are incubated for an average of 19 days (n = 125 nests) and chicks fledge at 16 days on average [47]. Predation rate is approximately 30% across the egglaying and incubation periods and about 20% for the nestling stage (Mayfield method; [47]). We considered a nest to have been successful when at least one nestling fledged.…”

Section: Quantifying Reproductive and Pairing Successmentioning

confidence: 99%

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An atypical mating system in a neotropical manakin

2020

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Most of the diversity in the mating systems of birds and other animals comes at higher taxonomic levels, such as across orders. Although divergent selective pressures should lead to animal mating systems that diverge sharply from those of close relatives, opportunities to examine the importance of such processes are scarce. We addressed this issue using the Araripe manakin ( Antilophia bokermanni ), a species endemic to a forest enclave surrounded by xeric shrublands in Brazil. Most manakins exhibit polygynous lekking mating systems that lack territoriality but exhibit strong sexual selection. In sharp contrast, we found that male Araripe manakins defended exclusive territories, and females nested within male territories. However, territoriality and offspring paternity were dissociated: males sired only 7% of nestlings from the nests within their territories and non-territorial males sired numerous nestlings. Moreover, female polyandry was widespread, with most broods exhibiting mixed paternity. Apparently, territories in this species function differently from both lekking arenas and resource-based territories of socially monogamous species. The unexpected territoriality of Araripe manakins and its dissociation from paternity is a unique evolutionary development within the manakin clade. Collectively, our findings underscore how divergences in mating systems might evolve based on selective pressures from novel environmental contexts.

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“…The seasonality and quantity of rainfall are increasingly recognized as potent selective forces in the tropics, influencing energetics, survival and reproductive behaviour, particularly in small birds [49][50][51]. In at least one manakin (Corapipo altera), birds fast during heavy rains [52], and fasting endurance depends upon the size of energy stores relative to demand.…”

Section: Introductionmentioning

confidence: 99%

Dancing drives evolution of sexual size dimorphism in manakins

et al. 2022

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Body size mediates life history, physiology and inter- and intra-specific interactions. Within species, sexes frequently differ in size, reflecting divergent selective pressures and/or constraints. Both sexual selection and differences in environmentally mediated reproductive constraints can drive sexual size dimorphism, but empirically testing causes of dimorphism is challenging. Manakins (Pipridae), a family of Neotropical birds comprising approximately 50 species, exhibit a broad range of size dimorphism from male- to female-biased and are distributed across gradients of precipitation and elevation. Males perform courtship displays ranging from simple hops to complex aerobatic manoeuvres. We tested associations between sexual size dimorphism and (a) agility and (b) environment, analysing morphological, behavioural and environmental data for 22 manakin species in a phylogenetic framework. Sexual dimorphism in mass was most strongly related to agility, with males being lighter than females in species performing more aerial display behaviours. However, wing and tarsus length dimorphism were more strongly associated with environmental variables, suggesting that different sources of selection act on different aspects of body size. These results highlight the strength of sexual selection in shaping morphology—even atypical patterns of dimorphism—while demonstrating the importance of constraints and ecological consequences of body size evolution.

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Breeding biology of the critically endangered Araripe Manakin (Antilophia bokermanni) in Brazil

Cited by 6 publications

References 42 publications

The El Niño – Southern Oscillation dramatically influences the probability of reproduction and reproductive rate of a tropical forest bird

The El Niño – Southern Oscillation dramatically influences the probability of reproduction and reproductive rate of a tropical forest bird

An atypical mating system in a neotropical manakin

Dancing drives evolution of sexual size dimorphism in manakins

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