Temporal variation in the reproductive success of Cacicus haemorrhous (Linnaeus) (Aves, Icterinae) in an Atlantic Forest reserve in Southeast Brazil

Duca, Charles; Marini, Miguel Ângelo

doi:10.1590/s0101-81752005000200026

Cited by 11 publications

(4 citation statements)

References 15 publications

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“…High nest predation rates are common in tropical systems (Martin 1995, Ricklefs 1969, Robinson et al . 2000a, b, Roper 2005) and in Atlantic Forests (Duca & Marini 2005a). Thus, it is no surprise to find that predation here is also the main cause of nest loss, although a daily survival rate of 0.966 is relatively high.…”

Section: Discussionmentioning

confidence: 99%

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Population dynamics of the black-cheeked gnateater (Conopophaga melanops, Conopophagidae) in southern Brazil

Lima¹,

Roper²

2009

J. Trop. Ecol.

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Abstract:Population structure and dynamics of the black-cheeked gnateater (Conopophaga melanops) were studied at Salto Morato Nature Reserve, in Paraná, southern Brazil, from October 2006 to September 2007. Territory size and population density, breeding season (timing and length), reproductive success and annual survival rates were estimated from sightings of 18 marked adult birds and the success of 18 nesting attempts. The black-cheeked gnateater is socially monogamous and territorial, with a breeding-season length of approximately 3 mo beginning in early October. Predation caused most nest failures, nest survival was 0.96 d−1and apparent annual nesting success was 22%, resulting in annual productivity of 0.36 individuals per adult. Apparent adult annual survival was ~0.44 y−1. Seventy-five per cent of fledglings survived at least 2 mo after fledging. Two methods of estimating population growth rate suggest very different rates: r = −0.04 (~ stable), or λ varies between 0.475–0.616 (declining). Yet, low apparent adult survival suggests that territories are not permanent, perhaps abandoned after nest failure. We find that by estimating population growth, even in short-term studies, testable hypotheses can be generated that will allow better understanding of population dynamics.

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Section: Discussionmentioning

confidence: 99%

“…2008). Some regions, such as the Brazilian cerrado (savanna) (Duca & Marini 2005a, b; Lopes & Marini 2006, Marini & Garcia 2005) and northern Argentina (Auer et al . 2007), are gradually becoming better known with respect to breeding biology, but much is yet to be done (Lyon et al .…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of the black-cheeked gnateater (Conopophaga melanops, Conopophagidae) in southern Brazil

Lima¹,

Roper²

2009

J. Trop. Ecol.

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“…The tested hypotheses were: (1) predation on artificial nests with large eggs will be less than that on nests with small eggs (Roper 1992, Alvarez & Galleti 2007; (2) the risk of predation will increase over time during the reproductive season, as observed in some studies with natural nests in neotropical areas (Borges & Marini 2010, Duca & Marini 2005; (3) predation risk will be greater in shrubs habitat than in trees, because predation tends to be greater in savanna than in forest (see Duca (Dinsmore et al 2002), and to sort candidate models based on Akaike Information Criterion adjusted for small samples (AIC c ; Burnham & Anderson 1998). The best-fit model was the one with the lowest AIC c value and models with ∆AIC c ≤ 2 were considered to have substantial support to explain variation in the data (Burnham & Anderson 1998).…”

Section: Introductionmentioning

confidence: 99%

Predation on artificial nests in open habitats of central Brazil: effects of time and egg size

et al. 2013

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Abstract:The accuracy of artificial nests in representing natural patterns of nest predation has been widely studied in temperate regions and egg size is one of the most tested sources of bias. In the neotropics, experiments with artificial nests usually used larger than natural eggs, despite suggestions in literature that the eggs should be similar to those of the local species. Here, we tested the hypothesis of spatial-temporal variation in predation risk of artificial nests in relation to egg size. We used quail (Coturnix coturnix; large), Chestnut-bellied Seedfinch (Oryzoborus angolensis; small) and plasticine (both sizes) eggs placed in artificial nests. We analyzed daily nest survival using models in the Program MARK. The best-fit model included the effects of egg size and the reproductive period on daily survival of artificial nests. Nests with large eggs had greater Daily Survival Estimates (DSE) than nests with small eggs during two times and DSE were smaller early in the reproductive period. DSE of 0.82 (95% CI = 0.76 to 0.86) and 0.91 (0.87 to 0.93) were recorded for large eggs at the beginning and end periods compared to 0.72 (0.65 to 0.78) and 0.84 (0.79 to 0.88) for small eggs. Birds were more important predators (40% of records) than mammals and reptiles based on signs left on the plasticine eggs. Our results support the hypothesis that larger eggs are less depredated than small ones in artificial bird nests, even when main predators (birds) are different from those commonly observed in the Neotropics (mammals and reptiles). However, controlling the egg size in experiments with artificial nests may not be sufficient to obtain similar time patterns observed in natural nests studied in the Cerrado. Resumo: A acurácia de ninhos artificiais em representar padrões naturais de predação de ninhos foi amplamente estudada em regiões temperadas, sendo o tamanho do ovo uma das fontes de erro mais testadas. Nos Neotrópicos, os experimentos com ninhos artificiais geralmente usaram ovos maiores que os naturais, apesar da literatura indicar a necessidade do uso de ovos semelhantes aos das espécies locais. Aqui, testamos hipóteses sobre variação espaço-temporal no risco de predação de ninhos artificiais em função do tamanho do ovo. Para isso, usamos ninhos artificiais com ovos de Codorna (Coturnix coturnix; grandes), Curió (Oryzoborus angolensis; pequenos) e plasticina (ambos tamanhos). Analisamos a sobrevivência diária dos ninhos através de modelos gerados no Programa MARK. O modelo melhor ajustado aos dados incluiu o efeito do tamanho do ovo e do período reprodutivo na sobrevivência diária dos ninhos artificiais. Ninhos com ovos grandes tiveram maiores Estimativas de Sobrevivência Diária (ESD) durante os dois períodos, além disso, as ESD foram menores no início do período reprodutivo. ESD de 0,82 (95% IC = 0,76 a 0,86) e 0,91 (0,87 a 0,93) foram registradas para ovos grandes no início e fim da estação reprodutiva, comparado com 0,72 (0,65 a 0,78) e 0,84 (0,79 a 0,88) registradas para ovos pequenos. As aves fora...

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“…A única atividade realizada pelo macho, relacionada à reprodução, é a defesa de território. Os territórios dos machos de A. bokermanni são relativamente pequenos quando comparados com outros passeriformes (Gorrel et al 2005, Duca & Marini 2005, Faria et al 2007). Uma explicação ecológica seria a pequena área de ocorrência da espécie adicionada à fragmentação do habitat, além da sinuosidade do relevo (ICMBIO 2011, Pinhero et al 2014.…”

Section: Poucosunclassified

Antilophia bokermanni (Aves: Pipridae) : parâmetros reprodutivos, sistema de acasalamento social e genético e o papel da seleção sexual

Gaiotti¹

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Desireé, Ingrid e especialmente ao Pedro Diniz e à Lilian (ainda conto como UNB), que me socorreram todas as dúvidas e que me ajudaram tanto, sem vocês acho que eu não conseguiria!! Agradeço todo o pessoal do Laboratório de Ornitologia de Cornell, em especial ao Prof. Mike Webster, Prof. Irby Lovette e à Dra. Bronwyn Butcher, pela oportunidade, paciência, tempo e imensurável aprendizado que me proporcionaram. Também quero agradecer ao Matt Medler pela tão atenciosa recepção durante minha estadia em Ithaca. Ao CEMAVE/ICMBio pelo fornecimento das anilhas metálicas. Ao IBAMA pela concessão das licenças. À Aquasis pelo apoio inicial no campo.

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Temporal variation in the reproductive success of Cacicus haemorrhous (Linnaeus) (Aves, Icterinae) in an Atlantic Forest reserve in Southeast Brazil

Cited by 11 publications

References 15 publications

Population dynamics of the black-cheeked gnateater (Conopophaga melanops, Conopophagidae) in southern Brazil

Population dynamics of the black-cheeked gnateater (Conopophaga melanops, Conopophagidae) in southern Brazil

Predation on artificial nests in open habitats of central Brazil: effects of time and egg size

Antilophia bokermanni (Aves: Pipridae) : parâmetros reprodutivos, sistema de acasalamento social e genético e o papel da seleção sexual

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