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| Registros recuperados: 18 | |
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| Priddel, D.; Wheeler, R.. |
| Together with land clearance, grazing by stock and inappropriate fire regimes, predation by the introduced European red fox Vulpes vulpes (Linnaeus, 1758) has decimated populations of malleefowl Leipoa ocellata Gould, 1840. The decline of the malleefowl has been most pronounced in New South Wales, where foxes prey so heavily on malleefowl that adult mortality exceeds recruitment of young into the breeding population. Although young malleefowl are particularly vulnerable to foxes, subadults and adults are also taken. Within New South Wales, heavy predation by foxes occurs both in the remnants of native vegetation within agricultural lands and in the large tracts of mallee that lie further inland. Foxes appear to be the prime cause of malleefowl mortality... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Malleefowl; Leipoa ocellata; Threatening processes; Conservation; Management; Recovery actions; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219426 |
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| Steadman, D.W.. |
| The arrival of prehistoric peoples in Oceania over the past several millennia resulted in the extinction of many species and populations of megapodes. Before these anthropogenic losses, species of megapodes ranged across Melanesia, Western Polynesia, and much of Micronesia. Island groups that lack megapodes today but were inhabited by them in the past include New Caledonia, Fiji, the Ha`apai Group and `Eua (Tonga), Samoa, Niue, and Pohnpei. The extinct megapodes varied in size from a tiny, quail-like species of Megapodius in Tonga to the large, flightless Sylviornis of New Caledonia. Remote Tongan islands as small as 13 km2 were able to sustain three species of Megapodius before human impact, thus calling into question the validity of using modern species... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Biogeography; Extinction; Oceania; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219416 |
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| Sandell, P.. |
| Parks Victoria and the Department of Natural Resources & Environment (NRE) are collaborating with agencies from the other States and the Commonwealth of Australia in a national program of detailed monitoring and surveillance of the effects of Rabbit Calicivirus Disease (RCD). A component of the Victorian study involves an investigation of possible changes in fox predation upon malleefowl Leipoa ocellata Gould, 1840, in the wake of reduced rabbit abundance caused by RCD. The study entails measurement of overall fox activity post-RCD, measurement of egg loss from malleefowl nests, and an assessment of any observable changes in fox diet. Measures of fox abundance/activity pre- and post- RCD suggest that the level of fox activity has not declined... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Malleefowl; Leipoa ocellata; Rabbit Calicivirus Disease; Fox predation; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219424 |
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| Dennings, S.. |
| Concern for the decline of the malleefowl Leipoa ocellata Gould, 1840, in the Gnowangerup Shire, Western Australia, lead to the formation, in August 1992, of the Malleefowl Preservation Group Inc. (MPG) which currently supports a membership in excess of 1500 individuals (January 1998). The group’s activities are carried out on a volunteer basis addressing projects such as annual field surveys and monitoring, community awareness, school education, feral animal eradication programs, reestablishment of native vegetation on farms and wildlife corridors. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Megapodes; Malleefowl; Leipoa ocellata; Community conservation; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219427 |
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| Benshemesh, J.. |
| The malleefowl Leipoa ocellata Gould, 1840, has declined substantially since European settlement of Australia just over 200 years ago. The species is now vulnerable and is threatened by the loss and degradation of suitable habitat by grazing, fire, and clearing, by the insidious effects of fragmentation of their populations that has resulted from clearing, and by predation by introduced foxes. Accordingly, a National Malleefowl Recovery Plan is being prepared to outline actions that are needed to both secure the species and provide the information necessary for effective management. Conserving malleefowl will require improved management throughout its range and on a diversity of land tenures. Improving habitat quality is crucial and may be achieved by... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Malleefowl; Leipoa ocellata; Conservation; National recovery plan; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219425 |
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| Jones, D.N.. |
| An evolutionary understanding of the complex mating systems of megapodes has been impaired by a historical and simplistic classification system that assumed all species to be monogamous. This approach has been challenged by behavioural ecology theories that emphasize the primacy of the individual attempt to maximize its own fitness. From this point of view the remarkable incubation techniques and the recently described behaviours of some clearly promiscuous species can be more clearly understood. In particular, the influence of the type of incubation-heat source on the mating system is paramount. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Mating systems; Monogamy; Promiscuity.; 42.83. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/317668 |
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| Wong, S.. |
| The megapode hatchling receives no care or guidance from its parents and so must be able to survive by itself. This raises some basic questions about the innate abilities of megapode hatchlings, including the possibility of predator recognition. Experiments were conducted to investigate the visual predator recognition abilities of the hatchlings of the Australian brush-turkey Alectura lathami J.E. Gray, 1831. Two separate methods involving video images and actual stimuli were used. There were no significant differences between the behaviours observed before compared to after the presentation of each stimulus, whether it was predator or non-predator, moving or non-moving. The hatchlings did not respond with any escape or avoidance behaviours when presented... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Megapode; Australian brush-turkey; Alectura lathami; Predator recognition; Anti-predator behaviour; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219421 |
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| Dekker, R.W.R.J.. |
| Megapodes: an action plan for their conservation 1995 - 1999, a collaborative effort of members of the Megapode Specialist Group and the World Pheasant Association, was published in 1995. It summarizes the conservation status of all megapode taxa and indicates the needs of those species under threat. The Action Plan was intended to be a stimulus for conservation orientated studies and to generate funds more easily. An overview is given of studies (1990 - present) in which these threatened taxa were involved. The status of these and other taxa are reassessed according to the finalized IUCN threat categories (which supercede the Mace-Lande threat categories originally used in the Action Plan) as a preparation for the megapode action plan 2000 - 2004. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Megapodes; Action plan; Conservation; Current projects; IUCN threat categories; 42.83. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/219428 |
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| Dekker, R.W.R.J.; Brom, T.G.. |
| Among megapodes, several incubation stategies can be recognized. Eggs are incubated by heat generated from microbial decomposition, volcanism, or the sun. For a long time, controversy has existed whether these strategies represent primitive traits, inherited from reptilian ancestors, or have evolved from the 'regular' way of incubation in birds. In this paper these strategies are interpreted by superimposing them on the most recent phylogenetic hypotheses regarding the inter- and intrafamilial relationships of megapodes. We conclude that similarities shared with reptiles and kiwis are due to convergence. Arguments are put forward that mound-building represents the plesiomorphic condition in megapodes and that burrow-nesting has been derived from it.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Incubation-strategies; Evolution; Apterygidae.; 42.83. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/317761 |
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| Birks, S.. |
| Female brush-turkeys respond to several factors when choosing with whom they will mate and where they will lay their eggs. The most important factors seem to be mound condition (especially incubation stage and digging effort required), male presence at mounds (though not necessarily male quality), and perhaps competition with other females for access to mounds. Most visits by females to mounds are for the purpose of copulation and mound "assessment" rather than egg laying. Females visit several mounds/males during the breeding season. Once they make a choice, most remain loyal to the chosen mound/male for several weeks, and are rarely seen at other mounds during this time. When switching to new mounds, females always choose more recently built ones even if... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Alectura lathami; Female mate-choice.; 42.83. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/317606 |
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| Dekker, R.W.R.J.; Jones, D.N.. |
| Contents Contents................................................................................................................................................................3 Introduction..........................................................................................................................................................3 Current studies on megapode phylogeny (Brom, T.G. & R.W.R.J. Dekker) ..............................................7 Megapode phylogeny and the interpretation of incubation strategies (Dekker, R.W.R.J. & T.G. Brom)...19 An evolutionary approach to megapode mating systems (D.N. Jones)....................................................33 Mate choice in Australian brush-turkeys Alectura lathami: A preliminary... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Megapodiidae; Galliformes; Aves; Phylogeny; Incubation strategies; Mating systems; Bibliography.; 42.83. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/317553 |
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| Registros recuperados: 18 | |
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