Differences in host species relationships and biogeographic influences produce contrasting patterns of prevalence, community composition and genetic structure in two genera of avian malaria parasites in southern Melanesia

1. Host-parasite interactions have the potential to influence broadscale ecological and evolutionary processes, levels of endemism, divergence patterns and distributions in host populations. Understanding the mechanisms involved requires identification of the factors that shape parasite distribution and prevalence. 2. A lack of comparative information on community-level host-parasite associations limits our understanding of the role of parasites in host population divergence processes. Avian malaria (haemosporidian) parasites in bird communities offer a tractable model system to examine the potential for pathogens to influence evolutionary processes in natural host populations. 3. Using cytochrome b variation, we characterized phylogenetic diversity and prevalence of two genera of avian haemosporidian parasites, Plasmodium and Haemoproteus, and analysed biogeographic patterns of lineages across islands and avian hosts, in southern Melanesian bird communities to identify factors that explain patterns of infection. 4. Plasmodium spp. displayed isolation-by-distance effects, a significant amount of genetic variation distributed among islands but insignificant amounts among host species and families, and strong local island effects with respect to prevalence. Haemoproteus spp. did not display isolation-by-distance patterns, showed marked structuring of genetic variation among avian host species and families, and significant host species prevalence patterns. 5. These differences suggest that Plasmodium spp. infection patterns were shaped by geography and the abiotic environment, whereas Haemoproteus spp. infection patterns were shaped predominantly by host associations. Heterogeneity in the complement and prevalence of parasite lineages infecting local bird communities likely exposes host species to a mosaic of spatially divergent disease selection pressures across their naturally fragmented distributions in southern Melanesia. Host associations for Haemoproteus spp. indicate a capacity for the formation of locally co-adapted host-parasite relationships, a feature that may limit intraspecific gene flow or range expansions of closely related host species.

National identity in fragile states: insights from tertiary students in Melanesia and Timor-Leste

The challenges of nation building in Melanesia and Timor-Leste have often been neglected in the regional focus on state-building challenges. High levels of ethno-linguistic diversity, combined with an array of regional, historical and cultural divisions, continue to present obstacles to the creation of a cohesive sense of national political community leading these nations to be labelled ‘fragile’. This paper presents the findings of a comparative study on the attitudes of tertiary students in Melanesia and Timor-Leste to national identity and nation building. A strong pan-Melanesian pattern of group identification was identified, common to Papua New Guinea, Solomon Islands and Vanuatu. The ongoing importance of traditional authority and custom in informing conceptions of political community and identity was evident in all four case study sites, but was in each case matched by indicators of respect for modern state authority. The survey also reveals some significant gender differences in key attitudes towards national identity, including the role of traditional authorities. Most importantly, the study reveals high degrees of national pride, and faith in democratic principles and citizenship; but conversely, low levels of pride in contemporary democratic performance and inter-group tolerance.

Di alcuni strumenti musicali della Micronesia e della Melanesia regalati al Museo Nazionale d'Anthropologia e di Etnologia dal Dott. Otto Finsch /

Offprint: Archivio per l'antropologia e la etnologia. Vol. 17, fasc. 1.

In the isles of the sea: the story of fifty years in Melanesia,

Introduction by Bishop H.H. Montgomery.

Sissano; movements of migration within and through Melanesia,

"In this monograph we are to subject to intimate examination the discovery record of one new-found language ... Sissano."--p. 3.

The last of Australian imperial dreams for the Southwest Pacific: Paul Hasluck, the Department of Territories and a Greater Melanesia in 1960

This paper is a study of the vision held at the beginning of the 1960s by Paul Hasluck, the minister for external territories, and his department of the path to decolonisation for Melanesia. Faced by the ongoing West New Guinea crisis, Hasluck and his officials proposed to keep the western part of New Guinea out of Indonesian hands by expanding Australia’s empire, step by step, to include most of Melanesia. This greater Melanesian empire would eventually be guided to self-government. The proposal stood in a long line of ideas by Pacific-minded Australians going back for 100 years for an expanded Australian empire in the southwest Pacific. Consequently the Menzies cabinet’s rejection of Hasluck’s proposal was not just an important step towards changing its policy towards WNG; it marked the end to a century of Australian dreams and designs of a greater formal empire in the southwest Pacific.