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Dewi M Prawiradilaga

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Author-ID : 2502162

Earth & Planetary Sciences Education Other

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Review of The Origin and Evolution of Social Signals in Ducks; in Particular The Function of Courtship Displays Dewi M Prawiradilaga
Media Konservasi Vol 2 No 3 (1989): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Recently, there has been an increase in the use of behavioural characteristics, especially courtship behaviour, in evolutionary studies. This is because such behaviour is thought to be of fixed pattern and species specific.In waterfowl, the study of the courtship behaviour was pioneered by Heinroth (191 1). His study has been elaborated by Lorenz (1941). Following this, Johnsgard (1962) and McKinney (1975) also have contributed much in this field of study. In the beginning, Heinroth and Lorenz used the evolution of courtship displays in waterfowl as indicators of taxonomic relationships. Then, Johnsgard investigated the distribution of homologous display repertoires of Anatidae and found out the relationships of all species. Since then, the study has been directed towards the search forfactors which have been responsible for the evolution af spec if^ differences, such as the difference in frequency, in the order of displays linked in sequences and in the degree ofelaboration of plumage features reinforcing signal movements. As examples, Johnsgard (1960a) studied the courtship displays in North American black duck (Anas nrbripes) and mallard (Anas platyrhynchos), McKinney (1970) observed four species of bluewinged ducks (Anas cyanopteta, A. discors, A. clypeata and A. smithi) and Prawiradilaga (1985) investigated the grey teal (Anas gibberifrons) and chestnut teal (Anas castanea).So far, not all of these specific factors have been brought up.It is the aim of this review to examine and discuss aspects of evolution of courtship displays which have been presented; in particular the origin and evolutioh of social signals in ducks, especially those referred to specifically as courtship displays.

Role of Birds on Population Control of Destructive Insects Dewi M Prawiradilaga
Media Konservasi Vol 3 No 1 (1990): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Approximately 331 species of birds or 67% of the total number of buds on Java island are primary and secondary insectivores. These buds were found to feed on 14 orders of insects (72%) which are potential as crop destructives. The orders of Coleoptera, Lepidoptera and of Orthoptera were eaten by more than 100 birds species. In order to promote the use of birds to control destructive- insect population, it is important to study the bio-ecology of insectivorous buds in details.

Basal Metabolic Rate and Ecology of Some Passerine Birds in Indonesia Asep S Adhikerana; Dewi M Prawiradilaga
Media Konservasi Vol 3 No 3 (1991): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Although the value of basal metabolic rate (BMR) is believed to be used as a basic reference in comparing several biological aspects of birds such as morphology, phylogeny, and ecology, its relationships with these aspects is hardly discussed. The paper is aimed to analyse relationships betwen the value of BMR and ecological aspects of some families of passerine birds in Indonesia whicch include nest type, primary food, primaly habitat, stratification of living site and foraging behavior. The results indicate that nest type, primexy food and foraging behavior have aclose relationship with the value of BMR of twenty five families of passerine birds; whereas the stratification of living site separate these birds families into two groups: arboreal and terrestrial groups. However, further research is still needed to verify these results.

Understorey birds of Cikaniki Research Station, Gunung Halimun-Salak National Park, West Java: Report of the Indonesian Bird Banding Scheme Training Programme Richard Noske; Dewi M Prawiradilaga; David Drynan; Alan Leishman; William Rutherford
KUKILA Vol. 15 (2011)
Publisher : Indonesian Ornithologists’ Union

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This report summarises findings from the first Training of Trainers (ToT) programme of the Indonesian Bird Banding Scheme (IBBS), which took place at Cikaniki Research Station (1000- 1100 m asl), Gunung Halimun-Salak National Park, during July 2009, and compares them with the results of previous banding studies conducted at the site by PPB-LIPI staff since 1996. Over the seven days from 13 to 19 July 2009, a total of 97 individuals representing 29 species were captured, and in most cases, banded. Juvenile birds belonging to 13 species comprised 28% of all individuals captured, and early primary moult was found on 32% of adults captured, suggesting that many species had recently completed breeding. The two most frequently captured species were the Little Spiderhunter Arachnothera longirostra and the Javan Fulvetta Alcippe pyrrhoptera. A comparison with previous banding studies between 1996 and 2002 at the same site shows that the latter species was repeatedly misidentified as the Fulvous-chested Jungle Flycatcher Rhinomyias olivacea, a species otherwise unknown for the park. This finding negates the conclusions of previous reports that R. olivacea is an important component of the understorey avifauna of the park at this altitude. Nine individuals, representing six species, were recaptured during the IBBS programme, including a Sunda Forktail Enicurus velatus that was at least 9 years old when re-trapped, and a Horsfield’s Babbler Malacocincla sepiaria that was at least 8.75 years old.

Strong sexual size dimorphism in the Dark-eared Myza Myza celebensis, a Sulawesi-endemic honeyeater, with notes on its wing markings and moult Richard A Noske; Alan J Leishman; J. Burton C Harris; Dadang Dwi Putra; Dewi M Prawiradilaga
KUKILA Vol. 17 No. 1 (2013)
Publisher : Indonesian Ornithologists’ Union

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We present morphometric and moult data for the Sulawesi-endemic Dark-eared Myza, based on 35 individuals captured at Lore Lindu National Park, Central Sulawesi, during March–April and July 2011. Four individuals banded in March were recaptured at the study site in July, suggesting that the population is probably sedentary. Like most meliphagids, although this species is not sexually dimorphic in plumage, measurements show that males are significantly heavier and have longer wings, tail and head–bill than females. Seven of the 16 adults in March–April and five of the 19 in July were moulting their primary feathers. Assuming that primary moult follows breeding, estimated laying dates for adults in the final stages of moult suggest breeding in December and early April, the latter corroborated by the presence of brood patches on two females in late March. A brood patch on a female in July further suggests that the breeding season is protracted. All birds photographed also showed distinct buff tips to most, if not all, secondary coverts and buff fringes to median coverts, a feature that appears to have gone unnoticed in the literature.

Surveys at Bagan Percut, Sumatra, reveal its international importance to migratory shorebirds and breeding herons Chairunas A Putra; Desy Hikmatullah; Dewi M Prawiradilaga; J. Berton C Harris
KUKILA Vol. 18 No. 2 (2015)
Publisher : Indonesian Ornithologists’ Union

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The Bagan Percut region of north-eastern Sumatra, Indonesia, is becoming well known for its large concentrations of migratory shorebirds. From January to June 2011 we made monthly counts of shorebirds and waterbirds at four mudflats and one heron rookery. Fifty-one species were recorded, including 35 migratory species, and eight breeding species in the rookery. We counted 20,114 migratory shorebirds (mudflats) and 45,648 breeding waterbirds (rookery) over six months of surveys. We observed >1% of the East Asian-Australasian flyway population of five species of migratory shorebirds: Nordmann’s Greenshank Tringa guttifer (globally Endangered), Lesser Sand Plover Charadrius mongolus, Pacific Golden Plover Pluvialis fulva, Eurasian Curlew Numenius arquata, and Ruddy Turnstone Arenaria interpres. Our results support the work of others that indicate that Bagan Percut is an important habitat for wintering, migrating, and summering shorebirds. We recommend that Bagan Percut be added to the East Asian-Australasian Flyway Partnership list of internationally important wetlands because the area meets all three criteria for inclusion.

Co-Authors Alan J Leishman Alan Leishman Asep S Adhikerana Chairunas A Putra Dadang Dwi Putra David Drynan Desy Hikmatullah J. Berton C Harris J. Burton C Harris Richard A Noske Richard Noske William Rutherford

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