A natural history of the ducks

Phillips, John C.; Benson, Frank Weston; Brooks, Allan; Fuertes, Louis Agassiz; Grönvold, Henrik

doi:10.5962/bhl.title.52316

Cited by 59 publications

(26 citation statements)

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“…The two subspecies can be distinguished morphologically. L. s. specularioides has a bright red iris, smaller body size (wing chord < 280 mm), and darker, more mottled plumage than L. s. alticola , which is larger (wing chord > 280 mm) and possesses a yellow‐orange iris (Phillips 1922–1926; Johnsgard 1978; Kear 2005; Bulgarella et al. 2007).…”

Section: Methodsmentioning

confidence: 99%

Multilocus coalescent analysis of haemoglobin differentiation between low‐ and high‐altitude populations of crested ducks (Lophonetta specularioides)

et al. 2011

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Hypoxia is a key factor determining survival, and haemoglobins are targets of selection in species native to high-altitude regions. We studied population genetic structure and evaluated evidence for local adaptation in the crested duck (Lophonetta specularioides). Differentiation, gene flow and time since divergence between highland and lowland populations were assessed for three haemoglobin genes (α(A) , α(D) , β(A) ) and compared to seven reference loci (six autosomal introns and mtDNA). Four derived amino acid replacements were found in the globin genes that had elevated Φ(ST) values between the Andean highlands and Patagonian lowlands. A single β(A) -globin polymorphism at a site known to influence O(2) affinity was fixed for different alleles in the two populations, whereas three α(A) - and α(D) -globin polymorphisms exhibited high heterozygosity in the highlands but not in the lowlands. Coalescent analyses supported restricted gene flow for haemoglobin alleles and mitochondrial DNA but nonzero gene flow for the introns. Simulating genetic data under a drift-migration model of selective neutrality, the β(A) -globin fell outside the 95% confidence limit of simulated data, suggesting that directional selection is maintaining different variants in the contrasting elevational environments, thereby restricting migration of β(A) -globin alleles. The α(A) - and α(D) -globins, by contrast, did not differ from the simulated values, suggesting that variants in these genes are either selectively neutral, or that the effects of selection could not be differentiated from background levels of population structure and linkage disequilibrium. This study illustrates the combined effects of selection and population history on inferring levels of population divergence for a species distributed across an altitudinal gradient in which selection for hypoxia resistance has likely played an important role.

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Section: Methodsmentioning

confidence: 99%

Multilocus coalescent analysis of haemoglobin differentiation between low‐ and high‐altitude populations of crested ducks (Lophonetta specularioides)

et al. 2011

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“…Both its common English and generic Latin appellations underscore the enigma that is the muscovy duck. The duck's ancestry is connected neither with Moscow (muscovy) nor with Cairo (Cairina) [13,20,28]; rather, it is indigenous to the lowland neotropics where it may have been domesticated originally.…”

Section: Introductionmentioning

confidence: 99%

“…Most impressive is a notable increase in overall weight and size. Under ideal conditions, drakes attain weights of up to 6 kg compared to 4 kg for wild forms, whereas, female ducks can increase their maximum weight from 1.5 kg in the wild to over 2.5 kg under domestication [5,13,21,28,29,42].…”

Section: Introductionmentioning

confidence: 99%

“…Very territorial, they prefer banks along streams and swamps, and forage in savannas during the wet season, yet are never far from trees where they spend the night between palm fronds or in tree holes. A highly omnivorous and opportunistic eater, the muscovy is known to consume small fish and reptiles, invertebrates, crustaceans, insects and especially termites, water plants and seeds, and agricultural crops [3,13,21,27,28,40,44].…”

Section: Introductionmentioning

confidence: 99%

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An exploratory osteological study of the muscovy duck (Cairina moschata) (Aves: Anatidae) with implications for neotropical archaeology

Stahl

2005

Journal of Archaeological Science

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“…Eleven of these eggs measured on average 61.8 x 48.0 mm and twenty-one weighed on average 82.5 g. Since the adult weight ranges from 680 to 790 g (Phillips, 1926), each egg constitutes some 11.2 per cent of the body weight, a relatively enormous proportion in comparison with, for instance, the Mallard Anus platyrhynchos or the African Yellowbill A.undulatn at 5.3 per cent (Kear, 1965) and 6.5 per cent (adult weight from Rowan, 1963) respectively. If the white-backs laid at least seven eggs at approximately daily intervals (Johnsgard, 1967), the whole clutch required an output of 78.4 per cent of the adult's total weight in the course of a…”

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NOTES OF THE EGGS AND DOWNY YOUNG OF THALASSORNIS LEUCONOTUS

Kear¹

1967

Ostrich

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A natural history of the ducks

Cited by 59 publications

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Multilocus coalescent analysis of haemoglobin differentiation between low‐ and high‐altitude populations of crested ducks (Lophonetta specularioides)

Multilocus coalescent analysis of haemoglobin differentiation between low‐ and high‐altitude populations of crested ducks (Lophonetta specularioides)

An exploratory osteological study of the muscovy duck (Cairina moschata) (Aves: Anatidae) with implications for neotropical archaeology

NOTES OF THE EGGS AND DOWNY YOUNG OF THALASSORNIS LEUCONOTUS

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