Evolution of parental roles in provisioning birds: diet determines role asymmetry in raptors

Sonerud, Geir A.; Steen, Ronny; Selås, Vidar; Aanonsen, Ole M.; Aasen, Gunn-Henny; Fagerland, Kristine L.; Fosså, Annette; Kristiansen, Lena; Løw, Line M.; Rønning, Mads E.; Skouen, Sarah K.; Asakskogen, Espen; Johansen, Hilde M.; Johnsen, Jon Trygve; Karlsen, Lise I.; Nyhus, Gunnar C.; Røed, Line T.; Skar, Kristin; Sveen, Bjørn-Arild; Tveiten, Reidar; Slagsvold, Tore

doi:10.1093/beheco/aru053

Cited by 30 publications

(22 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using a database of 257 species and phylogenetic approaches, a recent review by Trochet et al (2016) proposed that the evolution of sex-biased dispersal was linked to parental care and sexual dimorphism rather than to mating system per se, a pattern congruent to other findings in birds (Mabry et al 2013). Among raptors and owls, sex roles in reproduction are well defined with females incubating, brooding, and distributing the food among the progeny and males hunting most of the prey items (Sonerud et al 2014). Thus, the survival of the brood relies strongly on the hunting efficiency of males.…”

Section: Evolution Of Male-biased Philopatrymentioning

confidence: 71%

Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls

et al. 2018

View full text Add to dashboard Cite

Non-random gene flow is a widely neglected force in evolution and ecology. This genotype-dependent dispersal is difficult to assess, yet can impact the genetic variation of natural populations and their fitness. In this work, we demonstrate a high immigration rate of barn owls (Tyto alba) inside a Swiss population surveyed during 15 years. Using ten microsatellite loci as an indirect method to characterize dispersal, two-third of the genetic tests failed to detect a female-biased dispersal, and Monte Carlo simulations confirmed a low statistical power to detect sex-biased dispersal in case of high dispersal rate of both sexes. The capture-recapture data revealed a female-biased dispersal associated with an excess of heterozygote for the melanocortin-1 receptor gene (MC1R), which is responsible for their ventral rufous coloration. Thus, female homozygotes for the MC1R allele might be negatively selected during dispersal. Despite the higher immigration of females that are heterozygote at MC1R, non-random gene flow should not lead to a migration load regarding this gene because we did not detect an effect of MC1R on survival and reproductive success in our local population. The present study highlights the usefulness of using multiple methods to correctly decrypt dispersal and gene flow. Moreover, despite theoretical expectations, we show that non-random dispersal of particular genotypes does not necessarily lead to migration load in recipient populations.

show abstract

Section: Evolution Of Male-biased Philopatrymentioning

confidence: 71%

Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls

et al. 2018

View full text Add to dashboard Cite

show abstract

“…with a decrease in nestling dependency (Steen et al 2010, Sonerud et al 2014a, 2014b. Although the trends in our data may have been influenced by a division in parental roles, our results indicate that changes in dietary habits are better explained by ecosystem phenology than by nestling age.…”

Section: Discussionmentioning

confidence: 50%

Dietary Plasticity in a Specialist Predator, the Gyrfalcon (Falco rusticolus): New Insights into Diet During Brood Rearing

Robinson

Booms

Bechard

et al. 2019

Journal of Raptor Research

View full text Add to dashboard Cite

show abstract

“…During the breeding season, the female takes responsibility for most or all incubation, brooding, guarding and feeding of nestlings, whereas the male forages for the family (Byholm, Rousi, & Sole, ; Eldegard, Selås, Sonerud, Steel, & Rafoss, ; Newton, , ). Diet is thought to have played a key role in the evolution of asymmetric parental roles (Newton, ; Slagsvold & Sonerud, ; Sonerud et al., ). Males capture smaller and more agile prey animals than the females (Newton, ), and in general, prey items of raptors are relatively large and require dismemberment before or during consumption (Fowler, Freedman, & Scannella, ), in particular for nestlings and fledglings who are only able to swallow small pieces of food, for example 0.3 g for European sparrowhawk Accipiter nisus , 0.6 g for Eurasian kestrel Falco tinnunculus and 1.7 g for common buzzard Buteo buteo (Fargallo et al., ; Slagsvold & Sonerud, ; Sonerud et al., ).…”

Section: Introductionmentioning

confidence: 99%

“…Diet is thought to have played a key role in the evolution of asymmetric parental roles (Newton, ; Slagsvold & Sonerud, ; Sonerud et al., ). Males capture smaller and more agile prey animals than the females (Newton, ), and in general, prey items of raptors are relatively large and require dismemberment before or during consumption (Fowler, Freedman, & Scannella, ), in particular for nestlings and fledglings who are only able to swallow small pieces of food, for example 0.3 g for European sparrowhawk Accipiter nisus , 0.6 g for Eurasian kestrel Falco tinnunculus and 1.7 g for common buzzard Buteo buteo (Fargallo et al., ; Slagsvold & Sonerud, ; Sonerud et al., ). Using her bill, a female will tear larger prey items into small morsels to feed her brood (Slagsvold & Sonerud, ).…”

Section: Introductionmentioning

confidence: 99%

Sexual dimorphism in jaw muscles of the Japanese sparrowhawk (Accipiter gularis)

Wang

Yan

Zhang

2017

Anat Histol Embryol

View full text Add to dashboard Cite

Materials suitable for anatomical research of raptorial birds are rare. Bird-eating raptors show distinct inter-sexual differences in body size and parental roles. The large females catch larger prey and prepare small morsels to feed their young using their hooked beaks. Here, we investigated the architectural properties of different jaw muscles of the Japanese sparrowhawk (Accipiter gularis) and examined whether there is sexual dimorphism in their architectural design. The results showed that musculus depressor mandibulae, the opener of the lower jaw, was characterized by relatively long fascicle length, whereas musculus pterygoideus was characterized by its larger mass and physiological cross-sectional area (PCSA) in both sexes. Females have the potential capacity to produce rapid and strong bites by their significantly longer fascicle length of M. depressor mandibulae and larger mass and PCSA of M. pterygoideus. For body size-matched gender, jaw muscles of males had fibres of relatively longer length than females, enabling greater velocity and excursion. Architectural characteristics of jaw muscles, together with the absolute dimorphism (the fascicle length of M. depressor mandibulae, the muscle mass and PCSA of M. pterygoideus) and relative dimorphism in the muscle mass of M. pterygoideus, reflect dietary difference and asymmetric parental roles between the sexes.

show abstract

Evolution of parental roles in provisioning birds: diet determines role asymmetry in raptors

Cited by 30 publications

References 48 publications

Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls

Female-biased dispersal and non-random gene flow of MC1R variants do not result in a migration load in barn owls

Dietary Plasticity in a Specialist Predator, the Gyrfalcon (Falco rusticolus): New Insights into Diet During Brood Rearing

Sexual dimorphism in jaw muscles of the Japanese sparrowhawk (Accipiter gularis)

Contact Info

Product

Resources

About