BEHAVIORAL PATERNITY PREDICTS GENETIC PATERNITY IN SATIN BOWERBIRDS (PTILONORHYNCHUS VIOLACEUS), A SPECIES WITH A NON-RESOURCE-BASED MATING SYSTEM

The potential for differences between genetic paternity and paternity inferred from behavioral observation has long been recognized. These differences are associated with the challenge for females of seeking both genetic and material benefits; this challenge is less severe in species with polygynous...

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Published in:The Auk 2007-07, Vol.124 (3), p.857-867
Main Authors: Reynolds, Sheila M, Dryer, Katie, Bollback, Jonathan, Uy, J. Albert C, Patricelli, Gail L, Robson, Timothy, Borgia, Gerald, Braun, Michael J
Format: Article
Language:English
Subjects:
Animal behavior
Animal genetics
Animal reproduction
Birds
Chicks
Ecological genetics
Evolutionary genetics
Female animals
Females
Genetics
Hypotheses
Male animals
Males
Mating behavior
mating success
Mating systems
microsatellites
National parks
non-resource-based mating system
paternity
Ptilonorhynchus violaceus
Reproductive success
Research s
Satin
Satin Bowerbird
Studies
System theory
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Summary:The potential for differences between genetic paternity and paternity inferred from behavioral observation has long been recognized. These differences are associated with the challenge for females of seeking both genetic and material benefits; this challenge is less severe in species with polygynous, non-resource-based mating systems (such as leks) than in those with resource-based systems. We present the first study of paternity patterns in a non-resource-based species that does not form true leks. We compared paternity inferred from observed mating behavior to genetically assigned paternity in the Satin Bowerbird (Ptilonorhynchus violaceus) using eight microsatellite markers. Mating behavior was observed and recorded via automated video-cameras positioned at all bowers (29–34 bowers each year) in the study site throughout each mating season. We obtained blood samples and identified mothers for 11 chicks in 9 nests. For all chicks, the most likely genetic father had been observed to mate with the mother in the year the chick was sampled. All most likely genetic fathers were assigned with high confidence and all were bower-holding males. These results demonstrate that genetic paternity can be inferred from observed mating behavior with reasonable confidence in Satin Bowerbirds. Observed male mating-success is therefore a reliable predictor of reproductive success, and this suggests that high skew in observed male mating-success translates directly to high skew in reproductive success. La Paternidad Comportamental Predice la Paternidad Genética en Ptilonorhynchus violaceus, una Especie con un Sistema de Apareamiento que No Está Basado en los Recursos
ISSN:0004-8038
1938-4254
2732-4613
DOI:10.1642/0004-8038(2007)124[857:BPPGPI]2.0.CO;2