New Platypodidae (Coleoptera) from Mt. Giluwe, Papua New Guinea

Roberts, Hywel

doi:10.1080/00222937900770071

Cited by 5 publications

(7 citation statements)

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“…Most of the 84 morphospecies were species known to science (n=67; 78%), while the remaining had uncertain or undescribed status. The high proportion of known species reflects extensive collecting and descriptive work on New Guinea ambrosia beetles (Schedl 1969a,b, 1972a,b, 1975, Gray and Wylie 1974, Roberts 1986, 1989) combined with broad distribution of many species documented in this study. This is in agreement with several other studies showing that many non‐cryptic or economically important insect groups from Papua New Guinea may be known to larger extent than often assumed (Novotny and Missa 2000, Miller et al 2003).…”

Section: Discussionmentioning

confidence: 79%

Low beta diversity of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) in lowland rainforests of Papua New Guinea

Hulcr¹,

Novotný²,

Maurer³

et al. 2007

Oikos

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We assessed the effect of geographical distance on insect species turnover in a situation where other major environmental factors, including host plant species, altitude, and climate, were constant. We sampled ambrosia beetles (Coleoptera, Curculionidae: Scolytinae and Platypodinae) from four tree species: Artocarpus altilis, Ficus nodosa, Leea indica and Nauclea orientalis, at three sites forming a 1000 km transect in lowland rainforests of northern Papua New Guinea. A standardized volume of wood from trunk, branches and twigs was sampled for ambrosia beetles from three individuals of the four tree species at each site. Each tree was killed standing and left exposed to beetle colonization for 20 days prior to sampling. We obtained 12 751 individuals from 84 morphospecies of ambrosia beetles. We surveyed most of the local species richness at each site, predicted by Chao 2 species richness estimates. The similarity of ambrosia beetle communities, estimated by Chao‐Sorensen index, was not correlated with their geographical distance. Likelihood analysis and Q‐mode analysis using Monte Carlo‐generated null distribution of beetles among sites supported the hypothesis that the assemblages of ambrosia beetles at different sites are drawn from the same species pool, regardless of their geographical distance. Tree part (trunk, branch, or twig) was more important predictor of the composition of ambrosia beetle communities than was the host species or geographical location. All three variables, however, explained only a small portion of variability in ambrosia assemblages. The distribution of ambrosia beetles among tree parts, tree species and study sites was mostly random, suggesting limited importance of host specificity or dispersal limitation.

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Section: Discussionmentioning

confidence: 79%

Low beta diversity of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) in lowland rainforests of Papua New Guinea

Hulcr¹,

Novotný²,

Maurer³

et al. 2007

Oikos

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“…Gentili & Gentili ( Roberts (1979) Elliott ef al. (1983) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975) Schedl (1975 Schedl ( (1988) …”

Section: ) 1988) 1988) 1988) 1988)mentioning

confidence: 98%

“…Similarly, on Mt Giluwe, New Guinea, living trees of N. pullei are degraded by a complex of three Platypus species (Roberts, 1979). In contrast, Naumann-Etienne (1978) found no platypodines but six genera of scolytines associated with Nothofagus dombeyi forest on Isla Victoria, Argentina (latitude 41"S, altitude ca 800 m).…”

Section: Bark and Pinhole Borersmentioning

confidence: 99%

Nothofagus (Fagaceae) and its invertebrate fauna-an overview and preliminary synthesis

McQuillan

1993

Biological Journal of the Linnean Society

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The invertebrates directly associated with the southern hemisphere tree genus Nothofagus are described and discussed in terms of their organization into guilds and attributes of their hostplants. Using literature records, comparisons are made of the guild composition between host species and provenances; a full invertebrate‐hostplant list is appended. Sap‐sucking Homoptera are particularly diverse and usually host‐species specific whereas defoliating insects seem less prevalent and less specific. Few seed‐eating insects are reported. Some provenances and hostplants exhibit local radiations in certain taxa, such as Eriococcidae in New Zealand, Notophorina psyllids in South America and scolytid beetles on N. dombeyi. Environmental stresses such as drought, disturbance and landslips, can induce outbreaks of certain scale insects and borers, affecting the dynamics of the forest. Generally, however, the influence of invertebrates appears benign, but occasional large‐scale defoliation is observed on N. solandri var. cliffortioides, N. moorei, N. antarctica and N. pumilio. Collectively this fauna has two elements: a geographically recurrent Gondwanic element, usually monophagous, and a provenance‐specific element (often polyphagous) locally recruited following vicariance of the host genus. The fauna of Nothofagus can be in stark contrast to that of adjacent forest types. In Australia, the insect profile of Nothofagus has more in common with fagaceous trees on other continents than the more recent Eucalyptus forests which surround it. There is almost no evidence of fauna transfer from Nothofagus to Eucalyptus. Relative to New Zealand, the Australian Nothofagus fauna is depauperate and may reflect truncation in Pleistocene glaciations. Typically low insect populations on these trees may partly explain the limited range of insectivorous birds and spiders observed in Australia. Much more data on the phytophagous insects of this biome is needed for comparative purposes. The fauna of the montane tropical subgenus Brassospora pollen group is almost unknown but could hold the key to the origin of fagaceous insect communities more generally. The conservation value of remaining Nothofagus forests is enhanced by recognition of their co‐adapted fauna, some of which are arranged in stable functional groups likely to give valuable insight into invertebrate‐hostplant interactions originating in the Cretaceous. Elucidation of its role in the processes of these unique forests remains a fertile field for endeavour in the future.

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“…Other potential pathogens such as Armillaria sp have also been recovered from the Nothofagus forests (unpublished data) but work elsewhere has suggested that some species of Armillaria are weak primary pathogens which may be important only as secondary pathogens in forest stands stressed by other agents (Kile 1986). Evidence that mature Nothofagus trees are under stress is provided by reports of the presence of three species of ambrosia beetles attacking live Nothofagus trees (Roberts 1979).…”

Section: Ecologymentioning

confidence: 99%

Stand-level dieback etiology and its consequences in the forests of Papua New Guinea

Arents

1988

GeoJournal

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ABSTRACT:Stand-level dieback in Nothofagus, mangrove and Eucalyptus deglupta forests is examined. In Nothofagus and mangrove forests, groups of largely even-aged trees die simultaneously, possibly triggered by drought stress which may directly affect the trees in Nothofagus forests or indirectly increase water salinity in mangroves. Lightning strikes may be an additional dieback trigger in mangroves. Crown decline only was observed in E. deglupta forests and this may be associated with water-logging during periods of exceptionally high rainfall. Examination of rainfall records shows that severe droughts occur periodically in association with E1 Nino Southern Oscillations in the Pacific Ocean.

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New Platypodidae (Coleoptera) from Mt. Giluwe, Papua New Guinea

Cited by 5 publications

References 0 publications

Low beta diversity of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) in lowland rainforests of Papua New Guinea

Low beta diversity of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae and Platypodinae) in lowland rainforests of Papua New Guinea

Nothofagus (Fagaceae) and its invertebrate fauna-an overview and preliminary synthesis

Stand-level dieback etiology and its consequences in the forests of Papua New Guinea

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