Evidence of non-random mating in a colour polymorphic raptor, the Booted Eagle

Bosch, Josep; Calvo, José F.; Martínez, José Antonio; Baiges, C.; Mestre, Joan-Lluís Zamora i; Jiménez‐Franco, María V.

doi:10.1007/s10336-020-01763-y

Cited by 4 publications

(2 citation statements)

References 60 publications

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“…Such mixed pairs in the Booted Eagle do produce some light offspring, though less frequently than dark offspring (Bosch et al 2019). Bosch et al (2020) found that (presumably heterozygous) light × light Booted Eagle pairs occasionally produce a dark young, but we detected no such instances in our sample size of light Little Eagle pairs. From the foregoing results, for the Little Eagle we conclude a Mendelian inheritance pattern with the dark morph recessive.…”

Section: Discussioncontrasting

confidence: 63%

“…Furthermore, our study assumed no extra-pair copulations and lacked molecular confirmation of parentage, neither of which has been investigated in the Little Eagle. Finally, Bosch et al (2020) found that dark offspring produced by Booted Eagle mixed-morph pairs exceed the expected Hardy-Weinberg value, especially light male × dark female, and that the few dark eaglets from light × light pairs suggest a lower frequency of heterozygous light × light pairs than expected. Possible mechanisms suggested include heterozygous light males selecting mates of their mother's colour (i.e.…”

Section: Pair Combination Progenymentioning

confidence: 82%

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Inheritance of plumage morphs in Little Eagles Hieraaetus morphnoides in northern New South Wales

Larkin¹,

Debus²

2020

Australian Field Ornithology

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Section: Discussioncontrasting

confidence: 63%

Section: Pair Combination Progenymentioning

confidence: 82%

Inheritance of plumage morphs in Little Eagles Hieraaetus morphnoides in northern New South Wales

Larkin¹,

Debus²

2020

Australian Field Ornithology

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Long-term population monitoring of a territorial forest raptor species

et al. 2020

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We provide field monitoring data of a territorial raptor (the booted eagle, Hieraaetus pennatus), that was intensively monitored over a period of 18 years (1998–2015) in a Mediterranean forested area of south-eastern Spain designated as a Special Protection Area (Natura 2000 Network) for this species. The data set compiles all the relevant information about the occupation of territories and nests, reproductive ecology, long-term monitoring of marked individuals and influence of parent’s colour morph on brood size. Several questions concerning the population ecology of forest-dwelling raptors and factors conditioning territorial occupancy, such as location cues or site fidelity, are addressed. This type of long-term population monitoring has high potential for replication, reuse and comparison purposes, providing insights for monitoring other long-lived, territorial species.

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Plumage polymorphism in the black sparrowhawk (Accipiter melanoleucus) is strongly associated with the expression level of agouti signaling protein

Rodseth,

Amar,

Sumasgutner

et al. 2024

Journal of Heredity

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Melanin-based plumage polymorphisms in birds are often associated with mutations in the melanogenesis genes, notably the melanocortin-1 receptor (MC1R), but may also arise through changes in the expression of these genes. Here we investigate the molecular basis of plumage polymorphism in both adult and juvenile black sparrowhawks (Accipiter melanoleucus), an African raptor that occurs in two adult colour morphs, light and dark, and also exhibits variation in juvenile plumage colouration. Our results confirmed that plumage differences in adult morphs were a result of differential deposition of eumelanin in their ventral contour feathers. No polymorphisms in the coding regions of the MC1R or the agouti signalling protein (ASIP) genes associated with adult colour morph were identified. However, lack of pigmentation in the developing breast feathers of light morph birds was strongly associated with elevated ASIP expression, and concomitant down-regulation of the downstream melanogenesis genes microphthalmia-associated transcription factor (MITF), tyrosinase (TYR) and tyrosinase-related protein 1 (TYRP1). Variation in the rufous coloured plumage of juveniles was found to be due to covariation in eumelanin and pheomelanin levels in dorsal and ventral contour feathers. As in adult birds, an inverse relationship between melanin pigmentation and ASIP expression was observed. This covariation between eumelanin and pheomelanin levels is not consistent with the pigment type-switching model of melanogenesis, where increased ASIP expression results in a switch from eumelanin to pheomelanin production. This highlights the need for caution when extrapolating results from model systems to other animals and the value of conducting research in wild species.

show abstract

Evidence of non-random mating in a colour polymorphic raptor, the Booted Eagle

Cited by 4 publications

References 60 publications

Inheritance of plumage morphs in Little Eagles Hieraaetus morphnoides in northern New South Wales

Inheritance of plumage morphs in Little Eagles Hieraaetus morphnoides in northern New South Wales

Long-term population monitoring of a territorial forest raptor species

Plumage polymorphism in the black sparrowhawk (Accipiter melanoleucus) is strongly associated with the expression level of agouti signaling protein

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