Sex and Age Related Variation in Foraging Strategies of Magpie Geese<i>Anseranas semipalmata</i>

Whitehead, Peter; Tschirner, Kurt

doi:10.1071/mu9920028

Cited by 11 publications

(6 citation statements)

References 11 publications

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“…1988;Madge 8r Burn, 1988;Rohwer, 1988;Rohwer 8: Freeman, 1989;Scott 8t CluttotiBrock, 1989;RlcNeil, Drapeau 8: Goss-Custard, 1992); and specific works on thc Ariliimidae (Martin, 1842;\Vetmore, 1926b;Stonor, 1939;Lint, 19%;Spcnce, 1939;Weller, 1967;Bell, Bruning 8r \l'iiinegar, 1970;Gill, Stokes 8r Stokes: 1974: Barroiv, Black & Walter, 1986Naranjo, 1986;Veselovsky, 1986;Servat & Pearson, 199 1) and Anseranus (Davies, 1961(Davies, , 1962a(Davies, , b, 1963Frith & Davies, 196 1 ;Johnsgard 196 Ic, 196511;Davies & Frith, 1964;Whitehead & Tschirner, 1992;Horn, Rafalski 8r JVhitehead, 1996). All attributes were coded as missing for Prestyoi-tiis (Appcndicrs 1.…”

Section: Ecomorphological Attributesmentioning

confidence: 96%

A phylogenetic analysis of basal Anseriformes, the fossil Presbyornis, and the interordinal relationships of waterfowl

Livezey

1997

Zoological Journal of the Linnean Society

168

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A phylogenetic analysis of 123 morphological characters of basal waterfowl (Aves: Anseriformes) and other selected avian orders confirmed that the screamers (Anhimae: Anhitn‐idae) are the sister‐group of other waterfowl (Anseres), and that the magpie goose (Anseranatidae: Anseranas semipalmata) is the sister group of other modern waterfowl exclusive of screamers (Anatidae sensu stricto). The analysis also supports the traditional hypothesis of the gallinaceous birds (Galliformes) as the sister group of the Anseriformes. Presbyornis, a fossil from the early Eocene of Wyoming and averred by Olson & Feduccia as showing that the Anseriformes were derived from shorebirds (Charadriiformes), was found to represent the sister group of the Anatidae. Associated hypotheses by Olson & Feduccia concerning the implications of Presbyornis for the phylogenetic relationships of flamingos (Phoenicopteriformes), the position of the Anhimidae within the waterfowl, relationships among modern Anatidae, and a plausible evolutionary scenario for waterfowl also are rejected. Analyses revealed that cranial characters were critical to the establishment of the Galliformes as the sister group of the Anseriformes; exclusion of the Anhimidae, especially in combination with Anseranas, also undermined the support for this inference. Placement of Presbyornis as the sister group of the Anatidae casts doubt on the role suggested by Feduccia of ‘transitional shorebirds' in the origin of modern avian orders, and calls into question the concept of ‘fossil mosaics’. The phylogenetic hypothesis is used to reconstruct an evolutionary scenario for selected ecomorphological characters in the galliform‐anseriform transition, to predict the most parsimonious states of these characters for Presbyornis, and to propose a phylogenetic classification of the higher‐order taxa of waterfowl. This re‐examination of Presbyornis also is used to exemplify the fundamental methodological shortcomings of the intuitive approach to the reconstruction of phylogenetic relationships.

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Section: Ecomorphological Attributesmentioning

confidence: 96%

A phylogenetic analysis of basal Anseriformes, the fossil Presbyornis, and the interordinal relationships of waterfowl

Livezey

1997

Zoological Journal of the Linnean Society

168

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“…In the floodplains of Australian tropical river systems it is clear that native macrophytes play an important role in the diets of some semi-aquatic and terrestrial fauna, particularly, water birds (e.g. Frith and Davies 1966;Whitehead and Saalfeld 2000;Whitehead and Tschirner 1992) and rats (e.g. Madsen and Shine 1996;Redhead 1979;Wurm 1998).…”

Section: Principle 3 River and Wetland Food Webs Are Strongly Dependmentioning

confidence: 99%

River and wetland food webs in Australia's wet - dry tropics: general principles and implications for management

Douglas

Bunn

Davies

2005

Mar. Freshwater Res.

172

190

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The tropical rivers of northern Australia have received international and national recognition for their high ecological and cultural values. Unlike many tropical systems elsewhere in the world and their temperate Australian counterparts, they have largely unmodified flow regimes and are comparatively free from the impacts associated with intensive land use. However, there is growing demand for agricultural development and existing pressures, such as invasive plants and feral animals, threaten their ecological integrity. Using the international literature to provide a conceptual framework and drawing on limited published and unpublished data on rivers in northern Australia, we have derived five general principles about food webs and related ecosystem processes that both characterise tropical rivers of northern Australia and have important implications for their management. These are: (1) the seasonal hydrology is a strong driver of ecosystem processes and food-web structure; (2) hydrological connectivity is largely intact and underpins important terrestrial–aquatic food-web subsidies; (3) river and wetland food webs are strongly dependent on algal production; (4) a few common macroconsumer species have a strong influence on benthic food webs; and (5) omnivory is widespread and food chains are short. The implications of these ecosystem attributes for the management and protection of tropical rivers and wetlands of northern Australian are discussed in relation to known threats. These principles provide a framework for the formation of testable hypotheses in future research programmes.

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“…the same order predicted from differences in body-size) (e.g. Whitehead and Tschirner 1992;; see also Fairbairn 1997 for review) but often this is not the case. For example, in the New Zealand Rifleman (Acanthisitta chloris) (Hunt and McLean 1993) and the extinct Huia (Heteralocha acutirostris) (Selander 1966) females of both species have a disproportionately longer bill.…”

mentioning

confidence: 99%

Adaptive divergence in the Superb Fairy-wren (Malurus cyaneus): a mainland versus island comparison of morphology and foraging behaviour

Schlotfeldt

Kleindorfer

2006

Emu - Austral Ornithology

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Sex and Age Related Variation in Foraging Strategies of Magpie GeeseAnseranas semipalmata

Cited by 11 publications

References 11 publications

A phylogenetic analysis of basal Anseriformes, the fossil Presbyornis, and the interordinal relationships of waterfowl

A phylogenetic analysis of basal Anseriformes, the fossil Presbyornis, and the interordinal relationships of waterfowl

River and wetland food webs in Australia's wet - dry tropics: general principles and implications for management

Adaptive divergence in the Superb Fairy-wren (Malurus cyaneus): a mainland versus island comparison of morphology and foraging behaviour

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